1 files changed, 47 insertions, 0 deletions
diff --git a/scripts/tests/install-lang.bats b/scripts/tests/install-lang.bats
index ecfbe01..8518852 100644
--- a/scripts/tests/install-lang.bats
+++ b/scripts/tests/install-lang.bats
@@ -79,6 +79,53 @@ teardown() {
   grep -qxF "coverage/" "$PROJECT/.gitignore"
 }
 
+@test "install-lang python: seeds the language-neutral default CLAUDE.md when the bundle ships none" {
+  run bash "$INSTALL_LANG" python "$PROJECT"
+
+  [ "$status" -eq 0 ]
+  [ -f "$PROJECT/CLAUDE.md" ]
+  # The default names no language, so it can't mislabel a python (or bash, or
+  # multi-bundle) project the way inheriting elisp's "Elisp project" header did.
+  ! grep -qi "Python project" "$PROJECT/CLAUDE.md"
+  ! grep -qi "Elisp project" "$PROJECT/CLAUDE.md"
+  grep -qF "names no language" "$PROJECT/CLAUDE.md"
+  [[ "$output" == *"language-neutral default"* ]]
+}
+
+@test "install-lang elisp: seeds the bundle's own CLAUDE.md, not the default" {
+  run bash "$INSTALL_LANG" elisp "$PROJECT"
+
+  [ "$status" -eq 0 ]
+  grep -qF "Elisp project." "$PROJECT/CLAUDE.md"
+  [[ "$output" == *"CLAUDE.md installed (elisp)"* ]]
+}
+
+@test "install-lang python: does not overwrite an existing CLAUDE.md without FORCE" {
+  echo "MY OWN CLAUDE" > "$PROJECT/CLAUDE.md"
+  run bash "$INSTALL_LANG" python "$PROJECT"
+
+  [ "$status" -eq 0 ]
+  grep -qxF "MY OWN CLAUDE" "$PROJECT/CLAUDE.md"
+}
+
+@test "install-lang bash: full bundle lands (rules, hook, settings, githook, CLAUDE.md)" {
+  run bash "$INSTALL_LANG" bash "$PROJECT"
+
+  [ "$status" -eq 0 ]
+  # Language + testing rules — the bundle's sync fingerprint
+  [ -f "$PROJECT/.claude/rules/bash.md" ]
+  [ -f "$PROJECT/.claude/rules/bash-testing.md" ]
+  # PostToolUse validate hook, executable and wired into settings
+  [ -x "$PROJECT/.claude/hooks/validate-bash.sh" ]
+  grep -qF "validate-bash.sh" "$PROJECT/.claude/settings.json"
+  # Pre-commit githook
+  [ -x "$PROJECT/githooks/pre-commit" ]
+  # The bundle ships its own CLAUDE.md, so it wins over the neutral default
+  grep -qF "Bash/shell project" "$PROJECT/CLAUDE.md"
+  # Gitignore footprint
+  grep -qxF ".claude/" "$PROJECT/.gitignore"
+}
+
 @test "install-lang go: full bundle lands (rules, hook, settings, githook, CLAUDE.md, coverage)" {
   run bash "$INSTALL_LANG" go "$PROJECT"