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-rw-r--r--init.el1
-rw-r--r--modules/dev-fkeys.el208
-rw-r--r--modules/prog-c.el20
-rw-r--r--modules/prog-general.el42
-rw-r--r--modules/prog-python.el1
-rw-r--r--modules/prog-shell.el8
-rw-r--r--tests/test-dev-fkeys--detect-project-type.el117
-rw-r--r--tests/test-dev-fkeys--f4-candidates.el66
-rw-r--r--tests/test-dev-fkeys--f4-clean-rebuild-impl.el118
-rw-r--r--tests/test-dev-fkeys--f4-clean-rebuild.el61
-rw-r--r--tests/test-dev-fkeys--f4-compile-and-run-impl.el75
-rw-r--r--tests/test-dev-fkeys--f4-compile-and-run.el94
-rw-r--r--tests/test-dev-fkeys--f4-compile-only.el61
-rw-r--r--tests/test-dev-fkeys--f4-derive-clean-cmd.el93
-rw-r--r--tests/test-dev-fkeys--f4-dispatch.el78
-rw-r--r--tests/test-dev-fkeys--f4-make-once-hook.el115
-rw-r--r--tests/test-dev-fkeys--f4-project-root.el51
17 files changed, 1166 insertions, 43 deletions
diff --git a/init.el b/init.el
index 2cd1c0cb..3f10da20 100644
--- a/init.el
+++ b/init.el
@@ -50,6 +50,7 @@
(require 'browser-config) ;; browser configuration/integration
(require 'coverage-core) ;; diff-aware coverage engine + F7 binding
(require 'coverage-elisp) ;; elisp backend for coverage-core
+(require 'dev-fkeys) ;; F4 compile+run dispatcher, F6 tests stopgap
;; ------------------------ User Interface Configuration -----------------------
diff --git a/modules/dev-fkeys.el b/modules/dev-fkeys.el
new file mode 100644
index 00000000..d2c70131
--- /dev/null
+++ b/modules/dev-fkeys.el
@@ -0,0 +1,208 @@
+;;; dev-fkeys.el --- Developer F-key dispatchers -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Project-aware F-key block for developer workflows:
+;;
+;; F4 completing-read of compile/run candidates filtered by project type
+;; C-F4 fast path: compile only (no-op on interpreted projects)
+;; M-F4 fast path: clean + rebuild (no-op on interpreted projects)
+;; S-F4 recompile (built-in)
+;; F6 project tests (Phase 1 stopgap; Phase 2 will replace with the
+;; polyglot test runner spec'd in todo.org)
+;;
+;; Project-type detection runs against the projectile root and falls back to
+;; 'unknown when no marker matches. Interpreted markers are checked before
+;; compiled markers, so a Python or Node project that also has a Makefile
+;; for tasks classifies as interpreted.
+;;
+;; F7 (coverage) is wired in coverage-core.el. F5 is reserved for the debug
+;; ticket and intentionally left unbound here.
+
+;;; Code:
+
+(require 'cl-lib)
+
+(declare-function projectile-compile-project "projectile" (arg))
+(declare-function projectile-run-project "projectile" (arg))
+(declare-function projectile-project-root "projectile" (&optional dir))
+(declare-function projectile-test-project "projectile" (arg))
+(declare-function recompile "compile" (&optional edit-command))
+
+;; ---------- Project root ----------
+
+(defun cj/--f4-project-root ()
+ "Return projectile project root, or nil. Never errors.
+Some projectile configurations signal an error when called outside a
+known project; this wrapper degrades to nil so the F4 dispatcher routes
+to the \\='unknown branch instead of crashing."
+ (when (fboundp 'projectile-project-root)
+ (condition-case nil
+ (projectile-project-root)
+ (error nil))))
+
+;; ---------- Project-type detection ----------
+
+(defconst cj/--f4-interpreted-markers
+ '("pyproject.toml" "requirements.txt" "Pipfile" "package.json")
+ "Markers that classify a project as interpreted (Run-only menu).")
+
+(defconst cj/--f4-compiled-markers
+ '("go.mod" "Cargo.toml" "CMakeLists.txt" "Makefile" "Eask")
+ "Markers that classify a project as compiled (full Compile/Run/Clean menu).")
+
+(defun cj/--f4-any-marker-p (root markers)
+ "Return non-nil if any of MARKERS exists at ROOT."
+ (cl-some (lambda (m) (file-exists-p (expand-file-name m root))) markers))
+
+(defun cj/--detect-project-type (root)
+ "Classify project at ROOT as \\='compiled, \\='interpreted, or \\='unknown.
+Interpreted markers are checked before compiled markers, so a Python or
+Node project that also has a Makefile for tasks classifies as interpreted.
+Returns \\='unknown when ROOT is nil or no marker matches."
+ (cond
+ ((not root) 'unknown)
+ ((cj/--f4-any-marker-p root cj/--f4-interpreted-markers) 'interpreted)
+ ((cj/--f4-any-marker-p root cj/--f4-compiled-markers) 'compiled)
+ (t 'unknown)))
+
+;; ---------- Clean command derivation ----------
+
+(defun cj/--f4-derive-clean-cmd (root)
+ "Pick a clean shell command for the project at ROOT, or nil.
+First marker matched wins. ROOT may be nil; nil and a path with no
+recognized markers both return nil."
+ (when root
+ (cond
+ ((file-exists-p (expand-file-name "go.mod" root)) "go clean ./...")
+ ((file-exists-p (expand-file-name "Cargo.toml" root)) "cargo clean")
+ ((file-exists-p (expand-file-name "Eask" root)) "eask clean")
+ ((file-exists-p (expand-file-name "Makefile" root)) "make clean")
+ ((file-exists-p (expand-file-name "CMakeLists.txt" root)) "cmake --build build --target clean"))))
+
+;; ---------- Action handlers ----------
+
+(defun cj/--f4-compile-and-run-impl ()
+ "Run `projectile-compile-project', then `projectile-run-project' on success.
+Installs a one-shot `compilation-finish-functions' hook to chain the run."
+ (add-hook 'compilation-finish-functions
+ (cj/--f4-make-once-hook
+ (lambda () (projectile-run-project nil))))
+ (projectile-compile-project nil))
+
+(defun cj/--f4-dispatch (action)
+ "Route ACTION (a symbol from `cj/--f4-candidates') to its handler.
+Signals `user-error' on an unrecognized symbol or nil."
+ (pcase action
+ ('compile-only (projectile-compile-project nil))
+ ('run-only (projectile-run-project nil))
+ ('compile-and-run (cj/--f4-compile-and-run-impl))
+ ('clean-rebuild (cj/--f4-clean-rebuild-impl (cj/--f4-project-root)))
+ ('compile-plain (call-interactively #'compile))
+ (_ (user-error "Unknown F4 action: %s" action))))
+
+(defun cj/--f4-clean-rebuild-impl (root)
+ "Run the heuristic clean for project at ROOT, then rebuild on success.
+Signals `user-error' when no clean command can be derived. The rebuild
+side reuses `projectile-compile-project' so the per-project compile
+command (prompted-and-cached by projectile) drives the build."
+ (let ((clean-cmd (cj/--f4-derive-clean-cmd root)))
+ (unless clean-cmd
+ (user-error "Clean + Rebuild: no clean command for this project type"))
+ (add-hook 'compilation-finish-functions
+ (cj/--f4-make-once-hook
+ (lambda () (projectile-compile-project nil))))
+ (let ((default-directory root))
+ (compile clean-cmd))))
+
+;; ---------- One-shot compilation-finish hook ----------
+
+(defun cj/--f4-make-once-hook (then-fn)
+ "Build a one-shot `compilation-finish-functions' hook that chains THEN-FN.
+The returned lambda removes itself from `compilation-finish-functions' on
+first invocation regardless of status, then calls THEN-FN only if the
+status string starts with \"finished\" (the convention used by compile.el
+for a successful compile)."
+ (let (hook)
+ (setq hook
+ (lambda (_buf status)
+ (remove-hook 'compilation-finish-functions hook)
+ (when (and (stringp status)
+ (string-prefix-p "finished" status))
+ (funcall then-fn))))
+ hook))
+
+;; ---------- Candidate menus ----------
+
+(defun cj/--f4-candidates (project-type)
+ "Return alist of (LABEL . ACTION) for the F4 menu given PROJECT-TYPE.
+The first entry is the default, selected on RET in completing-read.
+Compiled projects get the full menu, interpreted projects get Run only,
+anything else (including nil and unrecognized symbols) falls through to
+a single Compile entry that calls plain `compile'."
+ (pcase project-type
+ ('compiled '(("Compile + Run" . compile-and-run)
+ ("Compile" . compile-only)
+ ("Run" . run-only)
+ ("Clean + Rebuild" . clean-rebuild)))
+ ('interpreted '(("Run" . run-only)))
+ (_ '(("Compile" . compile-plain)))))
+
+;; ---------- Interactive wrappers ----------
+
+(defun cj/f4-compile-and-run ()
+ "Project-aware F4 dispatcher.
+Prompts via `completing-read' with a candidate set filtered by project
+type (compiled / interpreted / unknown), then dispatches the chosen
+label's action."
+ (interactive)
+ (let* ((root (cj/--f4-project-root))
+ (project-type (cj/--detect-project-type root))
+ (candidates (cj/--f4-candidates project-type))
+ (default (caar candidates))
+ (label (completing-read
+ (format "F4 (%s): " project-type)
+ (mapcar #'car candidates) nil t nil nil default))
+ (action (cdr (assoc label candidates))))
+ (cj/--f4-dispatch action)))
+
+(defun cj/f4-compile-only ()
+ "C-F4 fast path: compile only.
+Compiled projects run `projectile-compile-project'. Interpreted projects
+get a no-op message. Outside any project, falls back to interactive
+`compile'."
+ (interactive)
+ (let* ((root (cj/--f4-project-root))
+ (project-type (cj/--detect-project-type root)))
+ (pcase project-type
+ ('compiled (projectile-compile-project nil))
+ ('interpreted (message "C-F4: not a compiled language"))
+ (_ (call-interactively #'compile)))))
+
+(defun cj/f4-clean-rebuild ()
+ "M-F4 fast path: clean + rebuild.
+Compiled projects run the heuristic clean + projectile-compile-project
+chain. Interpreted projects and unrecognized projects get a no-op
+message."
+ (interactive)
+ (let* ((root (cj/--f4-project-root))
+ (project-type (cj/--detect-project-type root)))
+ (pcase project-type
+ ('compiled (cj/--f4-clean-rebuild-impl root))
+ ('interpreted (message "M-F4: not a compiled language"))
+ (_ (message "M-F4: no project detected")))))
+
+;; ---------- Bindings ----------
+
+(keymap-global-set "<f4>" #'cj/f4-compile-and-run)
+(keymap-global-set "C-<f4>" #'cj/f4-compile-only)
+(keymap-global-set "M-<f4>" #'cj/f4-clean-rebuild)
+(keymap-global-set "S-<f4>" #'recompile)
+;; Phase 1 stopgap. Phase 2 replaces this with the polyglot test runner
+;; spec'd in todo.org. Without a global F6 binding here, the per-language
+;; F6→format bindings in prog-c/python/shell would have nothing to fall
+;; back on after this commit drops them, leaving F6 on its useless Emacs
+;; default (`2C-command').
+(keymap-global-set "<f6>" #'projectile-test-project)
+
+(provide 'dev-fkeys)
+;;; dev-fkeys.el ends here.
diff --git a/modules/prog-c.el b/modules/prog-c.el
index d9191bf4..df32b76a 100644
--- a/modules/prog-c.el
+++ b/modules/prog-c.el
@@ -16,12 +16,12 @@
;;
;; Workflow Example:
;; 1. Open a .c file → LSP auto-starts, provides completions
-;; 2. S-<f2> → Compile (auto-detects Makefile/CMake/single file)
-;; 3. <f5> → Quick recompile
-;; 4. S-<f3> → Start GDB with multi-window layout
-;; 5. <f6> or C-c f → Format code with clang-format
-;; 6. M-. → Jump to function definition
-;; 7. C-c l → Access LSP commands (rename, find references, etc.)
+;; 2. F4 → compile + run dispatcher (dev-fkeys.el)
+;; 3. S-F4 → recompile (repeat last)
+;; 4. S-F6 → start GDB
+;; 5. C-; f → format code with clang-format
+;; 6. M-. → jump to function definition
+;; 7. C-c l → LSP commands (rename, find references, etc.)
;;; Code:
@@ -95,7 +95,6 @@
(use-package clang-format
:if (executable-find clang-format-path)
:bind (:map c-mode-base-map
- ("<f6>" . clang-format-buffer)
("C-; f" . clang-format-buffer)))
;; -------------------------------- Compilation --------------------------------
@@ -135,11 +134,8 @@
;; -------------------------------- Keybindings --------------------------------
(defun cj/c-mode-keybindings ()
- "Set up keybindings for C programming.
-Overrides default prog-mode keybindings with C-specific commands."
- ;; S-f4: Recompile (override default - C uses this more than projectile-compile)
- (local-set-key (kbd "S-<f4>") #'recompile)
-
+ "Set up C-specific S-modifier overrides on the dev F-keys.
+S-F4 (recompile) is global, owned by dev-fkeys.el — not duplicated here."
;; S-f5: Static analysis placeholder (could add clang-tidy, cppcheck, etc.)
(local-set-key (kbd "S-<f5>") #'cj/disabled)
diff --git a/modules/prog-general.el b/modules/prog-general.el
index 0ae6aa82..46599cc9 100644
--- a/modules/prog-general.el
+++ b/modules/prog-general.el
@@ -8,28 +8,22 @@
;;
;; Keybinding Scheme:
;; ------------------
-;; Unified keybindings across all programming languages using Projectile
-;; for project-aware operations with language-specific overrides.
+;; The F4–F7 dev block is owned by dev-fkeys.el (global bindings). Per-
+;; language modules only set S-F5 / S-F6 overrides for static analysis
+;; and debugging. F5 is reserved for the debug ticket.
;;
-;; Global Keybindings (all prog-mode buffers):
-;; F4 - projectile-compile-project (smart compilation)
-;; S-F4 - recompile (repeat last compile)
-;; F5 - projectile-test-project (run tests)
-;; S-F5 - Language-specific static analysis
-;; F6 - projectile-run-project (run/execute)
-;; S-F6 - Language-specific debugger
-;; C-; f - Language-specific formatter
+;; Global (dev-fkeys.el):
+;; F4 / C-F4 / M-F4 compile + run dispatcher / compile only / clean + rebuild
+;; S-F4 recompile (repeat last)
+;; F6 project tests (Phase 1 stopgap; Phase 2 = polyglot dispatcher)
+;; F7 coverage report (coverage-core.el)
+;; C-; f language-specific formatter
;;
-;; Quick Reference Table:
-;; | Key | Global | C | Go | Python | Shell |
-;; |-------|----------|---------------|-------------|-------------|-------------|
-;; | F4 | compile | compile | compile | compile | compile |
-;; | S-F4 | recompile| recompile | (projectile)| (projectile)| (projectile)|
-;; | F5 | test | test | test | test | test |
-;; | S-F5 | (none) | disabled | staticcheck | mypy | shellcheck |
-;; | F6 | run | run | run | run | run |
-;; | S-F6 | (none) | gdb | dlv | pdb | disabled |
-;; | C-; f | format | clang-format | gofmt | blacken | shfmt |
+;; Per-language S-modifier overrides:
+;; | Key | C | Go | Python | Shell |
+;; |------|----------|-------------|--------|------------|
+;; | S-F5 | disabled | staticcheck | mypy | shellcheck |
+;; | S-F6 | gdb | dlv | pdb | disabled |
;;; Code:
@@ -79,11 +73,9 @@
(auto-fill-mode) ;; auto wrap at the fill column set
(local-set-key (kbd "M-;") 'comment-dwim) ;; comment/uncomment region as appropriate
- ;; Project-wide commands (can be overridden by language-specific modes)
- (local-set-key (kbd "<f4>") 'projectile-compile-project) ;; compile project
- (local-set-key (kbd "S-<f4>") 'recompile) ;; recompile (repeat last)
- (local-set-key (kbd "<f5>") 'projectile-test-project) ;; run tests
- (local-set-key (kbd "<f6>") 'projectile-run-project)) ;; run project
+ ;; F4–F6 are global, owned by dev-fkeys.el. F5 is reserved for the
+ ;; debug ticket (separate work).
+ )
(add-hook 'prog-mode-hook #'cj/general-prog-settings)
(add-hook 'html-mode-hook #'cj/general-prog-settings)
diff --git a/modules/prog-python.el b/modules/prog-python.el
index 3b85bafd..a26b9760 100644
--- a/modules/prog-python.el
+++ b/modules/prog-python.el
@@ -128,7 +128,6 @@ Overrides default prog-mode keybindings with Python-specific commands."
(blacken-skip-string-normalization t)
:hook (python-ts-mode . blacken-mode)
:bind (:map python-ts-mode-map
- ("<f6>" . blacken-buffer)
("C-; f" . blacken-buffer)))
;; ---------------------------------- Numpydoc ---------------------------------
diff --git a/modules/prog-shell.el b/modules/prog-shell.el
index cb9598db..57347cc6 100644
--- a/modules/prog-shell.el
+++ b/modules/prog-shell.el
@@ -17,9 +17,9 @@
;;
;; Workflow:
;; 1. Open .sh file → LSP auto-starts, ShellCheck runs
-;; 2. <f6> → Format with shfmt
-;; 3. C-c ! l → Show all ShellCheck diagnostics
-;; 4. Save → Auto-set executable bit if script has shebang
+;; 2. C-; f → format with shfmt
+;; 3. C-c ! l → show all ShellCheck diagnostics
+;; 4. Save → auto-set executable bit if script has shebang
;;; Code:
@@ -143,10 +143,8 @@ Overrides default prog-mode keybindings with shell-specific commands."
:if (executable-find shfmt-path)
:hook ((sh-mode bash-ts-mode) . shfmt-on-save-mode)
:bind ((:map sh-mode-map
- ("<f6>" . shfmt-buffer)
("C-; f" . shfmt-buffer))
(:map bash-ts-mode-map
- ("<f6>" . shfmt-buffer)
("C-; f" . shfmt-buffer)))
:custom
(shfmt-arguments '("-i" "2" ;; indent with 2 spaces
diff --git a/tests/test-dev-fkeys--detect-project-type.el b/tests/test-dev-fkeys--detect-project-type.el
new file mode 100644
index 00000000..3b306484
--- /dev/null
+++ b/tests/test-dev-fkeys--detect-project-type.el
@@ -0,0 +1,117 @@
+;;; test-dev-fkeys--detect-project-type.el --- Tests for cj/--detect-project-type -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the project-type classifier in dev-fkeys.el.
+;; The classifier returns 'compiled, 'interpreted, or 'unknown based on
+;; marker files at the project root. Interpreted markers are checked first
+;; so a Python or Node project with a Makefile for tasks classifies as
+;; interpreted.
+
+;;; Code:
+
+(require 'ert)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+(defmacro test-dev-fkeys--with-project-dir (markers &rest body)
+ "Create a temp project dir with each filename in MARKERS as an empty file.
+Bind the dir path to ROOT in BODY. Cleans up on exit."
+ (declare (indent 1))
+ `(let ((root (make-temp-file "test-dev-fkeys-" t)))
+ (unwind-protect
+ (progn
+ (dolist (marker ,markers)
+ (write-region "" nil (expand-file-name marker root)))
+ ,@body)
+ (delete-directory root t))))
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-detect-project-type-go-mod-is-compiled ()
+ "Normal: go.mod marker classifies as compiled."
+ (test-dev-fkeys--with-project-dir '("go.mod")
+ (should (eq (cj/--detect-project-type root) 'compiled))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-cargo-toml-is-compiled ()
+ "Normal: Cargo.toml marker classifies as compiled."
+ (test-dev-fkeys--with-project-dir '("Cargo.toml")
+ (should (eq (cj/--detect-project-type root) 'compiled))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-cmakelists-is-compiled ()
+ "Normal: CMakeLists.txt marker classifies as compiled."
+ (test-dev-fkeys--with-project-dir '("CMakeLists.txt")
+ (should (eq (cj/--detect-project-type root) 'compiled))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-makefile-is-compiled ()
+ "Normal: Makefile marker classifies as compiled."
+ (test-dev-fkeys--with-project-dir '("Makefile")
+ (should (eq (cj/--detect-project-type root) 'compiled))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-eask-is-compiled ()
+ "Normal: Eask marker classifies as compiled."
+ (test-dev-fkeys--with-project-dir '("Eask")
+ (should (eq (cj/--detect-project-type root) 'compiled))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-pyproject-is-interpreted ()
+ "Normal: pyproject.toml marker classifies as interpreted."
+ (test-dev-fkeys--with-project-dir '("pyproject.toml")
+ (should (eq (cj/--detect-project-type root) 'interpreted))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-requirements-is-interpreted ()
+ "Normal: requirements.txt marker classifies as interpreted."
+ (test-dev-fkeys--with-project-dir '("requirements.txt")
+ (should (eq (cj/--detect-project-type root) 'interpreted))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-pipfile-is-interpreted ()
+ "Normal: Pipfile marker classifies as interpreted."
+ (test-dev-fkeys--with-project-dir '("Pipfile")
+ (should (eq (cj/--detect-project-type root) 'interpreted))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-package-json-is-interpreted ()
+ "Normal: package.json marker classifies as interpreted."
+ (test-dev-fkeys--with-project-dir '("package.json")
+ (should (eq (cj/--detect-project-type root) 'interpreted))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-detect-project-type-interpreted-wins-over-compiled ()
+ "Boundary: a Python project with a Makefile classifies as interpreted.
+Interpreted markers are checked first so task-runner Makefiles in
+Python/Node projects don't misclassify them as compiled."
+ (test-dev-fkeys--with-project-dir '("pyproject.toml" "Makefile")
+ (should (eq (cj/--detect-project-type root) 'interpreted))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-package-json-wins-over-makefile ()
+ "Boundary: package.json + Makefile classifies as interpreted."
+ (test-dev-fkeys--with-project-dir '("package.json" "Makefile")
+ (should (eq (cj/--detect-project-type root) 'interpreted))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-pure-c-with-makefile-is-compiled ()
+ "Boundary: a Makefile alone (no interpreted markers) classifies as compiled.
+This is the typical pure-C project case."
+ (test-dev-fkeys--with-project-dir '("Makefile")
+ (should (eq (cj/--detect-project-type root) 'compiled))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-no-markers-is-unknown ()
+ "Boundary: directory with no markers classifies as unknown."
+ (test-dev-fkeys--with-project-dir '()
+ (should (eq (cj/--detect-project-type root) 'unknown))))
+
+(ert-deftest test-dev-fkeys-detect-project-type-irrelevant-file-is-unknown ()
+ "Boundary: unrelated files in root don't trigger any classification."
+ (test-dev-fkeys--with-project-dir '("README.md" "LICENSE" ".gitignore")
+ (should (eq (cj/--detect-project-type root) 'unknown))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-detect-project-type-nil-root-is-unknown ()
+ "Error: nil ROOT returns 'unknown (buffer not in a project)."
+ (should (eq (cj/--detect-project-type nil) 'unknown)))
+
+(ert-deftest test-dev-fkeys-detect-project-type-nonexistent-root-is-unknown ()
+ "Error: a directory path that doesn't exist returns 'unknown.
+file-exists-p on a non-existent path returns nil, so no marker matches."
+ (should (eq (cj/--detect-project-type "/nonexistent/path/xyzzy") 'unknown)))
+
+(provide 'test-dev-fkeys--detect-project-type)
+;;; test-dev-fkeys--detect-project-type.el ends here
diff --git a/tests/test-dev-fkeys--f4-candidates.el b/tests/test-dev-fkeys--f4-candidates.el
new file mode 100644
index 00000000..a2d1afa4
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-candidates.el
@@ -0,0 +1,66 @@
+;;; test-dev-fkeys--f4-candidates.el --- Tests for cj/--f4-candidates -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the candidate-menu builder. Returns an alist of
+;; (LABEL . ACTION) for the F4 completing-read prompt. The first entry
+;; is the default (selected on RET).
+
+;;; Code:
+
+(require 'ert)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-f4-candidates-compiled-has-four-entries ()
+ "Normal: compiled project gets all four candidates."
+ (let ((cands (cj/--f4-candidates 'compiled)))
+ (should (= (length cands) 4))))
+
+(ert-deftest test-dev-fkeys-f4-candidates-compiled-default-is-compile-and-run ()
+ "Normal: first candidate for compiled is Compile + Run (the default)."
+ (let ((cands (cj/--f4-candidates 'compiled)))
+ (should (equal (caar cands) "Compile + Run"))
+ (should (eq (cdar cands) 'compile-and-run))))
+
+(ert-deftest test-dev-fkeys-f4-candidates-compiled-includes-all-actions ()
+ "Normal: compiled menu maps each label to its action symbol."
+ (let ((cands (cj/--f4-candidates 'compiled)))
+ (should (eq (cdr (assoc "Compile + Run" cands)) 'compile-and-run))
+ (should (eq (cdr (assoc "Compile" cands)) 'compile-only))
+ (should (eq (cdr (assoc "Run" cands)) 'run-only))
+ (should (eq (cdr (assoc "Clean + Rebuild" cands)) 'clean-rebuild))))
+
+(ert-deftest test-dev-fkeys-f4-candidates-interpreted-is-run-only ()
+ "Normal: interpreted project gets a single Run candidate."
+ (let ((cands (cj/--f4-candidates 'interpreted)))
+ (should (= (length cands) 1))
+ (should (equal (caar cands) "Run"))
+ (should (eq (cdar cands) 'run-only))))
+
+(ert-deftest test-dev-fkeys-f4-candidates-unknown-is-compile-plain ()
+ "Normal: unknown project gets a single Compile candidate that calls plain compile."
+ (let ((cands (cj/--f4-candidates 'unknown)))
+ (should (= (length cands) 1))
+ (should (equal (caar cands) "Compile"))
+ (should (eq (cdar cands) 'compile-plain))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-f4-candidates-bogus-symbol-falls-back-to-unknown ()
+ "Boundary: an unrecognized project-type symbol falls through to the unknown branch."
+ (let ((cands (cj/--f4-candidates 'fictional-type)))
+ (should (= (length cands) 1))
+ (should (eq (cdar cands) 'compile-plain))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-f4-candidates-nil-falls-back-to-unknown ()
+ "Error: nil project-type falls through to the unknown branch."
+ (let ((cands (cj/--f4-candidates nil)))
+ (should (= (length cands) 1))
+ (should (eq (cdar cands) 'compile-plain))))
+
+(provide 'test-dev-fkeys--f4-candidates)
+;;; test-dev-fkeys--f4-candidates.el ends here
diff --git a/tests/test-dev-fkeys--f4-clean-rebuild-impl.el b/tests/test-dev-fkeys--f4-clean-rebuild-impl.el
new file mode 100644
index 00000000..27c7c56a
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-clean-rebuild-impl.el
@@ -0,0 +1,118 @@
+;;; test-dev-fkeys--f4-clean-rebuild-impl.el --- Tests for cj/--f4-clean-rebuild-impl -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the "Clean + Rebuild" action handler. Runs the heuristic clean
+;; command via `compile' from the project root, then chains
+;; `projectile-compile-project' on success via the one-shot finish hook.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+(defmacro test-dev-fkeys-cr--with-project (markers &rest body)
+ "Create a temp project dir with each filename in MARKERS as an empty file.
+Bind the dir path to ROOT in BODY. Cleans up on exit."
+ (declare (indent 1))
+ `(let ((root (make-temp-file "test-dev-fkeys-cr-" t)))
+ (unwind-protect
+ (progn
+ (dolist (marker ,markers)
+ (write-region "" nil (expand-file-name marker root)))
+ ,@body)
+ (delete-directory root t))))
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-runs-derived-clean-cmd ()
+ "Normal: handler invokes `compile' with the heuristic clean command for the
+project marker present at ROOT.
+
+Components integrated:
+- `cj/--f4-clean-rebuild-impl' (unit under test)
+- `cj/--f4-derive-clean-cmd' (real)
+- `compile' (MOCKED — captures the command string)
+- `projectile-compile-project' (MOCKED — no-op)
+- `compilation-finish-functions' (real, scoped via let)"
+ (test-dev-fkeys-cr--with-project '("Makefile")
+ (let ((compile-calls nil)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'compile)
+ (lambda (cmd) (push cmd compile-calls)))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil)))
+ (cj/--f4-clean-rebuild-impl root)
+ (should (equal compile-calls '("make clean")))))))
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-installs-finish-hook ()
+ "Normal: handler installs exactly one hook in `compilation-finish-functions'."
+ (test-dev-fkeys-cr--with-project '("go.mod")
+ (let ((compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'compile) (lambda (_cmd) nil))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil)))
+ (cj/--f4-clean-rebuild-impl root)
+ (should (= (length compilation-finish-functions) 1))))))
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-hook-runs-projectile-compile-on-success ()
+ "Normal: when the clean step finishes successfully, the installed hook
+calls `projectile-compile-project' to do the rebuild."
+ (test-dev-fkeys-cr--with-project '("Cargo.toml")
+ (let ((compile-calls 0)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'compile) (lambda (_cmd) nil))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) (cl-incf compile-calls))))
+ (cj/--f4-clean-rebuild-impl root)
+ (run-hook-with-args 'compilation-finish-functions nil "finished\n")
+ (should (= compile-calls 1))))))
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-runs-clean-from-project-root ()
+ "Normal: the clean compile runs with default-directory bound to ROOT."
+ (test-dev-fkeys-cr--with-project '("Eask")
+ (let ((seen-dir nil)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'compile)
+ (lambda (_cmd) (setq seen-dir default-directory)))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil)))
+ (cj/--f4-clean-rebuild-impl root)
+ (should (string= (file-name-as-directory seen-dir)
+ (file-name-as-directory root)))))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-hook-skips-rebuild-on-failure ()
+ "Boundary: when the clean step fails, projectile-compile-project does not run."
+ (test-dev-fkeys-cr--with-project '("Makefile")
+ (let ((compile-calls 0)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'compile) (lambda (_cmd) nil))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) (cl-incf compile-calls))))
+ (cj/--f4-clean-rebuild-impl root)
+ (run-hook-with-args 'compilation-finish-functions nil "exited abnormally\n")
+ (should (= compile-calls 0))))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-no-clean-cmd-signals-user-error ()
+ "Error: a project root with no recognized markers signals a user-error
+rather than silently running nothing."
+ (test-dev-fkeys-cr--with-project '("README.md")
+ (cl-letf (((symbol-function 'compile) (lambda (_cmd) nil))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil)))
+ (should-error (cj/--f4-clean-rebuild-impl root) :type 'user-error))))
+
+(ert-deftest test-dev-fkeys-clean-rebuild-impl-nil-root-signals-user-error ()
+ "Error: a nil root signals a user-error (no project detected)."
+ (cl-letf (((symbol-function 'compile) (lambda (_cmd) nil))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil)))
+ (should-error (cj/--f4-clean-rebuild-impl nil) :type 'user-error)))
+
+(provide 'test-dev-fkeys--f4-clean-rebuild-impl)
+;;; test-dev-fkeys--f4-clean-rebuild-impl.el ends here
diff --git a/tests/test-dev-fkeys--f4-clean-rebuild.el b/tests/test-dev-fkeys--f4-clean-rebuild.el
new file mode 100644
index 00000000..040ce930
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-clean-rebuild.el
@@ -0,0 +1,61 @@
+;;; test-dev-fkeys--f4-clean-rebuild.el --- Smoke tests for cj/f4-clean-rebuild -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Smoke tests for the M-F4 fast path. On a compiled project, runs the
+;; clean-rebuild handler. Interpreted and unknown projects get a no-op
+;; message — no rebuild attempt, no error.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+(defmacro test-dev-fkeys-cr-w--with-project (markers &rest body)
+ "Set up a temp project with MARKERS, bind ROOT, run BODY, clean up."
+ (declare (indent 1))
+ `(let ((root (make-temp-file "test-dev-fkeys-cr-w-" t)))
+ (unwind-protect
+ (progn
+ (dolist (marker ,markers)
+ (write-region "" nil (expand-file-name marker root)))
+ ,@body)
+ (delete-directory root t))))
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-f4-clean-rebuild-compiled-project-runs-impl-with-root ()
+ "Normal: on a compiled project, calls cj/--f4-clean-rebuild-impl with the
+project root."
+ (test-dev-fkeys-cr-w--with-project '("Makefile")
+ (let (received-root)
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'cj/--f4-clean-rebuild-impl)
+ (lambda (r) (setq received-root r))))
+ (cj/f4-clean-rebuild)
+ (should (string= received-root root))))))
+
+(ert-deftest test-dev-fkeys-f4-clean-rebuild-interpreted-project-skips-impl ()
+ "Normal: on an interpreted project, the impl handler is not invoked."
+ (test-dev-fkeys-cr-w--with-project '("pyproject.toml")
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'cj/--f4-clean-rebuild-impl)
+ (lambda (_r) (cl-incf calls))))
+ (cj/f4-clean-rebuild)
+ (should (= calls 0))))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-f4-clean-rebuild-unknown-project-skips-impl ()
+ "Boundary: outside any project, the impl handler is not invoked."
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () nil))
+ ((symbol-function 'cj/--f4-clean-rebuild-impl)
+ (lambda (_r) (cl-incf calls))))
+ (cj/f4-clean-rebuild)
+ (should (= calls 0)))))
+
+(provide 'test-dev-fkeys--f4-clean-rebuild)
+;;; test-dev-fkeys--f4-clean-rebuild.el ends here
diff --git a/tests/test-dev-fkeys--f4-compile-and-run-impl.el b/tests/test-dev-fkeys--f4-compile-and-run-impl.el
new file mode 100644
index 00000000..d59a6cd6
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-compile-and-run-impl.el
@@ -0,0 +1,75 @@
+;;; test-dev-fkeys--f4-compile-and-run-impl.el --- Tests for cj/--f4-compile-and-run-impl -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the "Compile + Run" action handler. After kicking off the
+;; compile, attaches a one-shot `compilation-finish-functions' hook that
+;; runs the project on success.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-compile-and-run-impl-invokes-projectile-compile ()
+ "Normal: handler calls `projectile-compile-project'.
+
+Components integrated:
+- `cj/--f4-compile-and-run-impl' (unit under test)
+- `projectile-compile-project' (MOCKED via cl-letf)
+- `compilation-finish-functions' (real, scoped via let)"
+ (let ((compile-calls 0)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'projectile-compile-project)
+ (lambda (_arg) (cl-incf compile-calls))))
+ (cj/--f4-compile-and-run-impl)
+ (should (= compile-calls 1)))))
+
+(ert-deftest test-dev-fkeys-compile-and-run-impl-installs-finish-hook ()
+ "Normal: handler installs exactly one hook in `compilation-finish-functions'."
+ (let ((compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil)))
+ (cj/--f4-compile-and-run-impl)
+ (should (= (length compilation-finish-functions) 1)))))
+
+(ert-deftest test-dev-fkeys-compile-and-run-impl-hook-runs-projectile-run-on-success ()
+ "Normal: when the compile finishes successfully, the installed hook calls
+`projectile-run-project'.
+
+Components integrated:
+- `cj/--f4-compile-and-run-impl' (unit under test)
+- `projectile-compile-project' (MOCKED — no-op)
+- `projectile-run-project' (MOCKED — counts calls)
+- `compilation-finish-functions' (real)
+- `run-hook-with-args' (real — simulates compile.el firing the hook)"
+ (let ((run-calls 0)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil))
+ ((symbol-function 'projectile-run-project)
+ (lambda (_arg) (cl-incf run-calls))))
+ (cj/--f4-compile-and-run-impl)
+ (run-hook-with-args 'compilation-finish-functions nil "finished\n")
+ (should (= run-calls 1)))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-compile-and-run-impl-hook-skips-projectile-run-on-failure ()
+ "Boundary: when the compile fails, projectile-run-project must not run.
+The hook still self-removes (covered in the make-once-hook tests)."
+ (let ((run-calls 0)
+ (compilation-finish-functions nil))
+ (cl-letf (((symbol-function 'projectile-compile-project)
+ (lambda (_arg) nil))
+ ((symbol-function 'projectile-run-project)
+ (lambda (_arg) (cl-incf run-calls))))
+ (cj/--f4-compile-and-run-impl)
+ (run-hook-with-args 'compilation-finish-functions nil "exited abnormally\n")
+ (should (= run-calls 0)))))
+
+(provide 'test-dev-fkeys--f4-compile-and-run-impl)
+;;; test-dev-fkeys--f4-compile-and-run-impl.el ends here
diff --git a/tests/test-dev-fkeys--f4-compile-and-run.el b/tests/test-dev-fkeys--f4-compile-and-run.el
new file mode 100644
index 00000000..3e0da877
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-compile-and-run.el
@@ -0,0 +1,94 @@
+;;; test-dev-fkeys--f4-compile-and-run.el --- Smoke tests for cj/f4-compile-and-run -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Smoke tests for the interactive F4 wrapper. The wrapper:
+;;
+;; 1. Resolves the project root.
+;; 2. Detects project type from markers.
+;; 3. Builds the candidate list.
+;; 4. Prompts via completing-read.
+;; 5. Looks up the chosen label's action.
+;; 6. Dispatches.
+;;
+;; Per the elisp-testing rule on Interactive vs Internal split, the heavy
+;; lifting is in `cj/--f4-dispatch' and the helpers — those are tested
+;; directly in their own files. This file just confirms the wrapper wires
+;; the pieces together: prompt fires, the chosen label routes to the right
+;; action symbol.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+(defmacro test-dev-fkeys-f4--with-project (markers &rest body)
+ "Set up a temp project with MARKERS, bind ROOT, run BODY, clean up."
+ (declare (indent 1))
+ `(let ((root (make-temp-file "test-dev-fkeys-f4-" t)))
+ (unwind-protect
+ (progn
+ (dolist (marker ,markers)
+ (write-region "" nil (expand-file-name marker root)))
+ ,@body)
+ (delete-directory root t))))
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-f4-compile-and-run-prompts-with-completing-read ()
+ "Normal: the wrapper invokes completing-read with the project's candidate labels.
+
+Components integrated:
+- `cj/f4-compile-and-run' (unit under test)
+- `cj/--f4-project-root' (MOCKED — returns the temp project root)
+- `cj/--detect-project-type' (real)
+- `cj/--f4-candidates' (real)
+- `completing-read' (MOCKED — captures candidates and returns the default)
+- `cj/--f4-dispatch' (MOCKED — captures the action it received)"
+ (test-dev-fkeys-f4--with-project '("go.mod")
+ (let (seen-candidates seen-action)
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'completing-read)
+ (lambda (_prompt collection &rest _)
+ (setq seen-candidates collection)
+ (car collection)))
+ ((symbol-function 'cj/--f4-dispatch)
+ (lambda (action) (setq seen-action action))))
+ (cj/f4-compile-and-run)
+ ;; Compiled-project candidates are the four labels.
+ (should (member "Compile + Run" seen-candidates))
+ (should (member "Compile" seen-candidates))
+ (should (member "Run" seen-candidates))
+ (should (member "Clean + Rebuild" seen-candidates))
+ ;; Default (first label) is "Compile + Run", which routes to
+ ;; the compile-and-run action.
+ (should (eq seen-action 'compile-and-run))))))
+
+(ert-deftest test-dev-fkeys-f4-compile-and-run-routes-chosen-label-to-action ()
+ "Normal: a non-default label selection routes to the right action."
+ (test-dev-fkeys-f4--with-project '("Cargo.toml")
+ (let (seen-action)
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'completing-read)
+ (lambda (&rest _) "Run"))
+ ((symbol-function 'cj/--f4-dispatch)
+ (lambda (action) (setq seen-action action))))
+ (cj/f4-compile-and-run)
+ (should (eq seen-action 'run-only))))))
+
+(ert-deftest test-dev-fkeys-f4-compile-and-run-interpreted-project-shows-run-only ()
+ "Normal: an interpreted project's menu has only the Run candidate."
+ (test-dev-fkeys-f4--with-project '("pyproject.toml")
+ (let (seen-candidates)
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'completing-read)
+ (lambda (_prompt collection &rest _)
+ (setq seen-candidates collection)
+ (car collection)))
+ ((symbol-function 'cj/--f4-dispatch) (lambda (_action) nil)))
+ (cj/f4-compile-and-run)
+ (should (equal seen-candidates '("Run")))))))
+
+(provide 'test-dev-fkeys--f4-compile-and-run)
+;;; test-dev-fkeys--f4-compile-and-run.el ends here
diff --git a/tests/test-dev-fkeys--f4-compile-only.el b/tests/test-dev-fkeys--f4-compile-only.el
new file mode 100644
index 00000000..b0eec367
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-compile-only.el
@@ -0,0 +1,61 @@
+;;; test-dev-fkeys--f4-compile-only.el --- Smoke tests for cj/f4-compile-only -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Smoke tests for the C-F4 fast path. On a compiled project, calls
+;; `projectile-compile-project'. On an interpreted project, messages
+;; "not a compiled language". With no project detected, falls back to
+;; plain `compile'.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+(defmacro test-dev-fkeys-co--with-project (markers &rest body)
+ "Set up a temp project with MARKERS, bind ROOT, run BODY, clean up."
+ (declare (indent 1))
+ `(let ((root (make-temp-file "test-dev-fkeys-co-" t)))
+ (unwind-protect
+ (progn
+ (dolist (marker ,markers)
+ (write-region "" nil (expand-file-name marker root)))
+ ,@body)
+ (delete-directory root t))))
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-f4-compile-only-compiled-project-runs-projectile-compile ()
+ "Normal: on a compiled project, calls projectile-compile-project."
+ (test-dev-fkeys-co--with-project '("go.mod")
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) (cl-incf calls))))
+ (cj/f4-compile-only)
+ (should (= calls 1))))))
+
+(ert-deftest test-dev-fkeys-f4-compile-only-interpreted-project-skips-compile ()
+ "Normal: on an interpreted project, projectile-compile-project does not run."
+ (test-dev-fkeys-co--with-project '("pyproject.toml")
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () root))
+ ((symbol-function 'projectile-compile-project)
+ (lambda (_arg) (cl-incf calls))))
+ (cj/f4-compile-only)
+ (should (= calls 0))))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-f4-compile-only-unknown-project-falls-back-to-compile ()
+ "Boundary: outside any project, falls back to interactive `compile'."
+ (let (received-fn)
+ (cl-letf (((symbol-function 'cj/--f4-project-root) (lambda () nil))
+ ((symbol-function 'call-interactively)
+ (lambda (fn &rest _) (setq received-fn fn))))
+ (cj/f4-compile-only)
+ (should (eq received-fn #'compile)))))
+
+(provide 'test-dev-fkeys--f4-compile-only)
+;;; test-dev-fkeys--f4-compile-only.el ends here
diff --git a/tests/test-dev-fkeys--f4-derive-clean-cmd.el b/tests/test-dev-fkeys--f4-derive-clean-cmd.el
new file mode 100644
index 00000000..9052bf55
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-derive-clean-cmd.el
@@ -0,0 +1,93 @@
+;;; test-dev-fkeys--f4-derive-clean-cmd.el --- Tests for cj/--f4-derive-clean-cmd -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the heuristic clean-command picker used by M-F4
+;; (Clean + Rebuild). Returns a shell command string based on the project
+;; root's marker files, or nil when no marker matches.
+
+;;; Code:
+
+(require 'ert)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+(defmacro test-dev-fkeys-clean--with-project-dir (markers &rest body)
+ "Create a temp project dir with each filename in MARKERS as an empty file.
+Bind the dir path to ROOT in BODY. Cleans up on exit."
+ (declare (indent 1))
+ `(let ((root (make-temp-file "test-dev-fkeys-clean-" t)))
+ (unwind-protect
+ (progn
+ (dolist (marker ,markers)
+ (write-region "" nil (expand-file-name marker root)))
+ ,@body)
+ (delete-directory root t))))
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-go-mod-uses-go-clean ()
+ "Normal: go.mod yields go clean ./..."
+ (test-dev-fkeys-clean--with-project-dir '("go.mod")
+ (should (string= (cj/--f4-derive-clean-cmd root) "go clean ./..."))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-cargo-toml-uses-cargo-clean ()
+ "Normal: Cargo.toml yields cargo clean."
+ (test-dev-fkeys-clean--with-project-dir '("Cargo.toml")
+ (should (string= (cj/--f4-derive-clean-cmd root) "cargo clean"))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-eask-uses-eask-clean ()
+ "Normal: Eask yields eask clean."
+ (test-dev-fkeys-clean--with-project-dir '("Eask")
+ (should (string= (cj/--f4-derive-clean-cmd root) "eask clean"))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-makefile-uses-make-clean ()
+ "Normal: Makefile yields make clean."
+ (test-dev-fkeys-clean--with-project-dir '("Makefile")
+ (should (string= (cj/--f4-derive-clean-cmd root) "make clean"))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-cmakelists-uses-cmake-clean ()
+ "Normal: CMakeLists.txt yields cmake build-dir clean target."
+ (test-dev-fkeys-clean--with-project-dir '("CMakeLists.txt")
+ (should (string= (cj/--f4-derive-clean-cmd root)
+ "cmake --build build --target clean"))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-go-wins-over-makefile ()
+ "Boundary: go.mod + Makefile picks go clean (go.mod is checked first)."
+ (test-dev-fkeys-clean--with-project-dir '("go.mod" "Makefile")
+ (should (string= (cj/--f4-derive-clean-cmd root) "go clean ./..."))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-cargo-wins-over-makefile ()
+ "Boundary: Cargo.toml + Makefile picks cargo clean."
+ (test-dev-fkeys-clean--with-project-dir '("Cargo.toml" "Makefile")
+ (should (string= (cj/--f4-derive-clean-cmd root) "cargo clean"))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-eask-wins-over-makefile ()
+ "Boundary: Eask + Makefile picks eask clean."
+ (test-dev-fkeys-clean--with-project-dir '("Eask" "Makefile")
+ (should (string= (cj/--f4-derive-clean-cmd root) "eask clean"))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-no-markers-returns-nil ()
+ "Boundary: directory with no recognized markers returns nil."
+ (test-dev-fkeys-clean--with-project-dir '()
+ (should (null (cj/--f4-derive-clean-cmd root)))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-irrelevant-files-returns-nil ()
+ "Boundary: only unrelated files returns nil."
+ (test-dev-fkeys-clean--with-project-dir '("README.md" "LICENSE")
+ (should (null (cj/--f4-derive-clean-cmd root)))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-nil-root-returns-nil ()
+ "Error: nil ROOT returns nil with no error."
+ (should (null (cj/--f4-derive-clean-cmd nil))))
+
+(ert-deftest test-dev-fkeys-derive-clean-cmd-nonexistent-root-returns-nil ()
+ "Error: a non-existent path returns nil. file-exists-p returns nil so no
+marker matches."
+ (should (null (cj/--f4-derive-clean-cmd "/nonexistent/path/xyzzy"))))
+
+(provide 'test-dev-fkeys--f4-derive-clean-cmd)
+;;; test-dev-fkeys--f4-derive-clean-cmd.el ends here
diff --git a/tests/test-dev-fkeys--f4-dispatch.el b/tests/test-dev-fkeys--f4-dispatch.el
new file mode 100644
index 00000000..774daebf
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-dispatch.el
@@ -0,0 +1,78 @@
+;;; test-dev-fkeys--f4-dispatch.el --- Tests for cj/--f4-dispatch -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the dispatch router. Each known action symbol routes to the
+;; corresponding command. Unknown actions raise user-error. The action
+;; handlers themselves are tested in their own files; this file only
+;; verifies the routing layer.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-dispatch-compile-only-calls-projectile-compile ()
+ "Normal: 'compile-only routes to projectile-compile-project."
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'projectile-compile-project)
+ (lambda (_arg) (cl-incf calls))))
+ (cj/--f4-dispatch 'compile-only)
+ (should (= calls 1)))))
+
+(ert-deftest test-dev-fkeys-dispatch-run-only-calls-projectile-run ()
+ "Normal: 'run-only routes to projectile-run-project."
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'projectile-run-project)
+ (lambda (_arg) (cl-incf calls))))
+ (cj/--f4-dispatch 'run-only)
+ (should (= calls 1)))))
+
+(ert-deftest test-dev-fkeys-dispatch-compile-and-run-routes-to-impl ()
+ "Normal: 'compile-and-run routes to cj/--f4-compile-and-run-impl."
+ (let ((calls 0))
+ (cl-letf (((symbol-function 'cj/--f4-compile-and-run-impl)
+ (lambda () (cl-incf calls))))
+ (cj/--f4-dispatch 'compile-and-run)
+ (should (= calls 1)))))
+
+(ert-deftest test-dev-fkeys-dispatch-clean-rebuild-routes-to-impl-with-root ()
+ "Normal: 'clean-rebuild routes to cj/--f4-clean-rebuild-impl with the project root.
+
+Components integrated:
+- `cj/--f4-dispatch' (unit under test)
+- `cj/--f4-project-root' (MOCKED — returns a fake path)
+- `cj/--f4-clean-rebuild-impl' (MOCKED — captures the ROOT it received)"
+ (let (received-root)
+ (cl-letf (((symbol-function 'cj/--f4-project-root)
+ (lambda () "/fake/project/"))
+ ((symbol-function 'cj/--f4-clean-rebuild-impl)
+ (lambda (root) (setq received-root root))))
+ (cj/--f4-dispatch 'clean-rebuild)
+ (should (string= received-root "/fake/project/")))))
+
+(ert-deftest test-dev-fkeys-dispatch-compile-plain-uses-call-interactively-on-compile ()
+ "Normal: 'compile-plain invokes `compile' interactively (so the user is
+prompted for a command). We check that `call-interactively' fires with
+the symbol `compile'."
+ (let (received-fn)
+ (cl-letf (((symbol-function 'call-interactively)
+ (lambda (fn &rest _) (setq received-fn fn))))
+ (cj/--f4-dispatch 'compile-plain)
+ (should (eq received-fn #'compile)))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-dispatch-unknown-action-signals-user-error ()
+ "Error: dispatch on an unknown symbol raises user-error."
+ (should-error (cj/--f4-dispatch 'fictional-action) :type 'user-error))
+
+(ert-deftest test-dev-fkeys-dispatch-nil-action-signals-user-error ()
+ "Error: nil action raises user-error (defensive against bad menu data)."
+ (should-error (cj/--f4-dispatch nil) :type 'user-error))
+
+(provide 'test-dev-fkeys--f4-dispatch)
+;;; test-dev-fkeys--f4-dispatch.el ends here
diff --git a/tests/test-dev-fkeys--f4-make-once-hook.el b/tests/test-dev-fkeys--f4-make-once-hook.el
new file mode 100644
index 00000000..b6c71dd7
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-make-once-hook.el
@@ -0,0 +1,115 @@
+;;; test-dev-fkeys--f4-make-once-hook.el --- Tests for cj/--f4-make-once-hook -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the one-shot `compilation-finish-functions' hook builder used by
+;; "Compile + Run" and "Clean + Rebuild" to chain a follow-up command after
+;; a successful compile. The returned lambda:
+;;
+;; - removes itself from `compilation-finish-functions' on first invocation
+;; regardless of status (so it never lingers across compiles)
+;; - invokes THEN-FN only when the status string indicates success — i.e.
+;; `string-prefix-p \"finished\"' matches.
+;;
+;; The status conventions come from the compile.el infrastructure: a
+;; successful compile passes \"finished\\n\", a failed compile passes
+;; something starting with \"exited\".
+
+;;; Code:
+
+(require 'ert)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-make-once-hook-success-status-calls-then-fn ()
+ "Normal: status starting with 'finished' invokes THEN-FN once."
+ (let* ((called 0)
+ (hook (cj/--f4-make-once-hook (lambda () (cl-incf called)))))
+ (let ((compilation-finish-functions nil))
+ (add-hook 'compilation-finish-functions hook)
+ (funcall hook nil "finished\n"))
+ (should (= called 1))))
+
+(ert-deftest test-dev-fkeys-make-once-hook-failure-status-skips-then-fn ()
+ "Normal: status string starting with 'exited abnormally' does not invoke THEN-FN."
+ (let* ((called 0)
+ (hook (cj/--f4-make-once-hook (lambda () (cl-incf called)))))
+ (let ((compilation-finish-functions nil))
+ (add-hook 'compilation-finish-functions hook)
+ (funcall hook nil "exited abnormally with code 1\n"))
+ (should (= called 0))))
+
+(ert-deftest test-dev-fkeys-make-once-hook-success-removes-itself ()
+ "Normal: hook removes itself from `compilation-finish-functions' on success."
+ (let* ((hook (cj/--f4-make-once-hook (lambda () nil)))
+ (compilation-finish-functions (list hook)))
+ (should (memq hook compilation-finish-functions))
+ (funcall hook nil "finished\n")
+ (should-not (memq hook compilation-finish-functions))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-make-once-hook-failure-also-removes-itself ()
+ "Boundary: hook removes itself even on failure, so it never fires on the
+next compile. THEN-FN is not invoked, but the hook is still cleaned up."
+ (let* ((called 0)
+ (hook (cj/--f4-make-once-hook (lambda () (cl-incf called))))
+ (compilation-finish-functions (list hook)))
+ (funcall hook nil "exited abnormally with code 1\n")
+ (should (= called 0))
+ (should-not (memq hook compilation-finish-functions))))
+
+(ert-deftest test-dev-fkeys-make-once-hook-only-fires-then-fn-once ()
+ "Boundary: re-invoking the hook lambda after it self-removes does not
+re-trigger THEN-FN — the hook has been removed from the hook list and only
+external mistakes (calling the lambda directly twice) could trigger it. We
+guard against that case anyway by checking the hook removed itself, so a
+second direct funcall sees the (now-gone) hook still calls THEN-FN. This
+test documents the contract: the hook does not gate on its own state, only
+on the hook list. So the SECOND direct funcall WILL call THEN-FN. The
+guarantee in production is that `compilation-finish-functions' calls each
+hook exactly once per compile, so the practical contract is one-shot."
+ (let* ((called 0)
+ (hook (cj/--f4-make-once-hook (lambda () (cl-incf called))))
+ (compilation-finish-functions (list hook)))
+ (funcall hook nil "finished\n")
+ (funcall hook nil "finished\n")
+ (should (= called 2))))
+
+(ert-deftest test-dev-fkeys-make-once-hook-empty-status-skips-then-fn ()
+ "Boundary: empty status string does not invoke THEN-FN."
+ (let* ((called 0)
+ (hook (cj/--f4-make-once-hook (lambda () (cl-incf called)))))
+ (let ((compilation-finish-functions nil))
+ (add-hook 'compilation-finish-functions hook)
+ (funcall hook nil ""))
+ (should (= called 0))))
+
+(ert-deftest test-dev-fkeys-make-once-hook-interrupt-status-skips-then-fn ()
+ "Boundary: an 'interrupt' status (process killed) does not invoke THEN-FN."
+ (let* ((called 0)
+ (hook (cj/--f4-make-once-hook (lambda () (cl-incf called)))))
+ (let ((compilation-finish-functions nil))
+ (add-hook 'compilation-finish-functions hook)
+ (funcall hook nil "interrupt\n"))
+ (should (= called 0))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-make-once-hook-then-fn-error-still-removes-hook ()
+ "Error: if THEN-FN raises, the hook is still removed first so the
+follow-up doesn't run twice on the next compile.
+
+Components integrated:
+- `cj/--f4-make-once-hook' (the unit under test)
+- `compilation-finish-functions' (real, mutated via add-hook/remove-hook)
+- A then-fn that signals an error"
+ (let* ((hook (cj/--f4-make-once-hook (lambda () (error "boom"))))
+ (compilation-finish-functions (list hook)))
+ ;; Hook signals through the error from THEN-FN; remove-hook ran first.
+ (should-error (funcall hook nil "finished\n"))
+ (should-not (memq hook compilation-finish-functions))))
+
+(provide 'test-dev-fkeys--f4-make-once-hook)
+;;; test-dev-fkeys--f4-make-once-hook.el ends here
diff --git a/tests/test-dev-fkeys--f4-project-root.el b/tests/test-dev-fkeys--f4-project-root.el
new file mode 100644
index 00000000..617bb9e1
--- /dev/null
+++ b/tests/test-dev-fkeys--f4-project-root.el
@@ -0,0 +1,51 @@
+;;; test-dev-fkeys--f4-project-root.el --- Tests for cj/--f4-project-root -*- lexical-binding: t -*-
+
+;;; Commentary:
+;; Tests for the projectile-root wrapper. Projectile's
+;; `projectile-project-root' raises an error in some configurations when
+;; called outside a known project; this wrapper degrades to nil so the F4
+;; dispatcher can route to the 'unknown branch instead of crashing.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'dev-fkeys)
+
+;;; Normal Cases
+
+(ert-deftest test-dev-fkeys-f4-project-root-returns-projectile-value ()
+ "Normal: returns whatever `projectile-project-root' returns when fbound."
+ (cl-letf (((symbol-function 'projectile-project-root)
+ (lambda () "/some/project/")))
+ (should (string= (cj/--f4-project-root) "/some/project/"))))
+
+;;; Boundary Cases
+
+(ert-deftest test-dev-fkeys-f4-project-root-returns-nil-when-projectile-unbound ()
+ "Boundary: returns nil when projectile is not loaded.
+
+Components integrated:
+- `cj/--f4-project-root' (unit under test)
+- `projectile-project-root' (MOCKED — fmakunbound to simulate absence)"
+ (let ((had-projectile (fboundp 'projectile-project-root))
+ (saved (and (fboundp 'projectile-project-root)
+ (symbol-function 'projectile-project-root))))
+ (unwind-protect
+ (progn
+ (when had-projectile (fmakunbound 'projectile-project-root))
+ (should (null (cj/--f4-project-root))))
+ (when had-projectile
+ (fset 'projectile-project-root saved)))))
+
+;;; Error Cases
+
+(ert-deftest test-dev-fkeys-f4-project-root-returns-nil-on-projectile-error ()
+ "Error: returns nil when `projectile-project-root' signals an error."
+ (cl-letf (((symbol-function 'projectile-project-root)
+ (lambda () (error "Outside a known project"))))
+ (should (null (cj/--f4-project-root)))))
+
+(provide 'test-dev-fkeys--f4-project-root)
+;;; test-dev-fkeys--f4-project-root.el ends here