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-;;; test-custom-comments-comment-block-banner.el --- Tests for cj/comment-block-banner -*- lexical-binding: t; -*-
-
-;;; Commentary:
-;; Tests for the cj/comment-block-banner function from custom-comments.el
-;;
-;; This function generates a 3-line block banner comment (JSDoc/Doxygen style):
-;; - Top line: comment-start (e.g., /*) + decoration chars
-;; - Text line: space + decoration char + space + text
-;; - Bottom line: space + decoration chars + comment-end (e.g., */)
-;;
-;; This style is common in C, JavaScript, Java, and other languages that use
-;; block comments.
-;;
-;; We test the NON-INTERACTIVE implementation (cj/--comment-block-banner)
-;; to avoid mocking user prompts. This follows our testing best practice
-;; of separating business logic from UI interaction.
-;;
-;; Cross-Language Testing Strategy:
-;; - Comprehensive testing in C (the primary language for this style)
-;; - Representative testing in JavaScript/Java (similar block comment syntax)
-;; - This style is specifically designed for block comments, so we focus
-;;   testing on languages that use /* */ syntax
-;; - See test-custom-comments-delete-buffer-comments.el for detailed rationale
-
-;;; Code:
-
-(require 'ert)
-(require 'testutil-general)
-
-;; Add modules directory to load path
-(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
-
-;; Stub dependencies before loading the module
-(defvar cj/custom-keymap (make-sparse-keymap)
-  "Stub keymap for testing.")
-
-;; Now load the actual production module
-(require 'custom-comments)
-
-;;; Test Helpers
-
-(defun test-block-banner-at-column (column-pos comment-start comment-end decoration-char text length)
-  "Test cj/--comment-block-banner at COLUMN-POS indentation.
-Insert spaces to reach COLUMN-POS, then call cj/--comment-block-banner with
-COMMENT-START, COMMENT-END, DECORATION-CHAR, TEXT, and LENGTH.
-Returns the buffer string for assertions."
-  (with-temp-buffer
-    (when (> column-pos 0)
-      (insert (make-string column-pos ?\s)))
-    (cj/--comment-block-banner comment-start comment-end decoration-char text length)
-    (buffer-string)))
-
-;;; C/JavaScript/Java Tests (Block Comment Languages - Comprehensive Coverage)
-
-;;; Normal Cases
-
-(ert-deftest test-block-banner-c-basic ()
-  "Should generate 3-line block banner in C style."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "Section Header" 70)))
-    ;; Should have 3 lines
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; First line should start with /*
-    (should (string-match-p "^/\\*\\*" result))
-    ;; Middle line should contain text
-    (should (string-match-p "\\* Section Header" result))
-    ;; Last line should end with */
-    (should (string-match-p "\\*/$" result))))
-
-(ert-deftest test-block-banner-c-custom-decoration ()
-  "Should use custom decoration character."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "#" "Header" 70)))
-    (should (string-match-p "/\\*#" result))
-    (should (string-match-p " # Header" result))))
-
-(ert-deftest test-block-banner-c-custom-text ()
-  "Should include custom text in banner."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "Custom Text Here" 70)))
-    (should (string-match-p "Custom Text Here" result))))
-
-(ert-deftest test-block-banner-c-empty-text ()
-  "Should handle empty text string."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "" 70)))
-    ;; Should still generate 3 lines
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; Should have comment delimiters
-    (should (string-match-p "/\\*" result))
-    (should (string-match-p "\\*/$" result))))
-
-(ert-deftest test-block-banner-c-at-column-0 ()
-  "Should work at column 0."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "Header" 70)))
-    ;; First character should be /
-    (should (string-prefix-p "/*" result))))
-
-(ert-deftest test-block-banner-c-indented ()
-  "Should work when indented."
-  (let ((result (test-block-banner-at-column 4 "/*" "*/" "*" "Header" 70)))
-    ;; First line should start with spaces
-    (should (string-prefix-p "    /*" result))
-    ;; Other lines should be indented
-    (let ((lines (split-string result "\n" t)))
-      (should (string-prefix-p "     " (nth 1 lines)))  ; text line has extra space
-      (should (string-prefix-p "     " (nth 2 lines)))))) ; bottom line has extra space
-
-(ert-deftest test-block-banner-c-short-text ()
-  "Should handle short text properly."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "X" 70)))
-    ;; Should have 3 lines
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; Text should be present
-    (should (string-match-p "X" result))))
-
-(ert-deftest test-block-banner-c-long-text ()
-  "Should handle longer text."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "This is a longer header text" 70)))
-    ;; Should have 3 lines
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; Text should be present
-    (should (string-match-p "This is a longer header text" result))))
-
-(ert-deftest test-block-banner-c-custom-length ()
-  "Should respect custom length."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "Header" 50)))
-    ;; Top line should be approximately 50 chars
-    (let ((first-line (car (split-string result "\n" t))))
-      (should (<= (length first-line) 51))
-      (should (>= (length first-line) 48)))))
-
-;;; Boundary Cases
-
-(ert-deftest test-block-banner-c-minimum-length ()
-  "Should work with minimum viable length."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "X" 10)))
-    (should (= 3 (length (split-string result "\n" t))))
-    (should (string-match-p "X" result))))
-
-(ert-deftest test-block-banner-c-very-long-length ()
-  "Should handle very long length."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "Header" 200)))
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; Top line should be very long
-    (let ((first-line (car (split-string result "\n" t))))
-      (should (> (length first-line) 100)))))
-
-(ert-deftest test-block-banner-c-unicode-decoration ()
-  "Should handle unicode decoration character."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "✦" "Header" 70)))
-    (should (string-match-p "✦" result))))
-
-(ert-deftest test-block-banner-c-unicode-text ()
-  "Should handle unicode in text."
-  (let ((result (test-block-banner-at-column 0 "/*" "*/" "*" "Hello 👋 مرحبا café" 70)))
-    (should (string-match-p "👋" result))
-    (should (string-match-p "مرحبا" result))
-    (should (string-match-p "café" result))))
-
-(ert-deftest test-block-banner-c-very-long-text ()
-  "Should handle very long text."
-  (let* ((long-text (make-string 100 ?x))
-         (result (test-block-banner-at-column 0 "/*" "*/" "*" long-text 70)))
-    ;; Should still generate output
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; Middle line should contain some of the text
-    (should (string-match-p "xxx" result))))
-
-(ert-deftest test-block-banner-c-max-indentation ()
-  "Should handle maximum practical indentation."
-  (let ((result (test-block-banner-at-column 60 "/*" "*/" "*" "Header" 100)))
-    (should (= 3 (length (split-string result "\n" t))))
-    ;; First line should start with 60 spaces
-    (should (string-prefix-p (make-string 60 ?\s) result))))
-
-;;; Error Cases
-
-(ert-deftest test-block-banner-c-length-too-small ()
-  "Should error when length is too small."
-  (should-error
-   (test-block-banner-at-column 0 "/*" "*/" "*" "Header" 3)
-   :type 'error))
-
-(ert-deftest test-block-banner-c-negative-length ()
-  "Should error with negative length."
-  (should-error
-   (test-block-banner-at-column 0 "/*" "*/" "*" "Header" -10)
-   :type 'error))
-
-(ert-deftest test-block-banner-c-zero-length ()
-  "Should error with zero length."
-  (should-error
-   (test-block-banner-at-column 0 "/*" "*/" "*" "Header" 0)
-   :type 'error))
-
-(ert-deftest test-block-banner-c-nil-decoration ()
-  "Should error when decoration-char is nil."
-  (should-error
-   (test-block-banner-at-column 0 "/*" "*/" nil "Header" 70)
-   :type 'wrong-type-argument))
-
-(ert-deftest test-block-banner-c-nil-text ()
-  "Should error when text is nil."
-  (should-error
-   (test-block-banner-at-column 0 "/*" "*/" "*" nil 70)
-   :type 'wrong-type-argument))
-
-(ert-deftest test-block-banner-c-non-integer-length ()
-  "Should error when length is not an integer."
-  (should-error
-   (test-block-banner-at-column 0 "/*" "*/" "*" "Header" "not-a-number")
-   :type 'wrong-type-argument))
-
-;;; Alternative Block Comment Styles
-
-(ert-deftest test-block-banner-java-style ()
-  "Should work with Java-style block comments."
-  (let ((result (test-block-banner-at-column 0 "/**" "*/" "*" "JavaDoc Comment" 70)))
-    (should (= 3 (length (split-string result "\n" t))))
-    (should (string-match-p "^/\\*\\*\\*" result))
-    (should (string-match-p "JavaDoc Comment" result))))
-
-(ert-deftest test-block-banner-js-style ()
-  "Should work with JavaScript-style block comments."
-  (let ((result (test-block-banner-at-column 2 "/*" "*/" "*" "Function Documentation" 70)))
-    (should (= 3 (length (split-string result "\n" t))))
-    (should (string-prefix-p "  /*" result))
-    (should (string-match-p "Function Documentation" result))))
-
-(provide 'test-custom-comments-comment-block-banner)
-;;; test-custom-comments-comment-block-banner.el ends here