1 files changed, 93 insertions, 0 deletions
diff --git a/scripts/tests/install-lang-completeness.bats b/scripts/tests/install-lang-completeness.bats
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+++ b/scripts/tests/install-lang-completeness.bats
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+#!/usr/bin/env bats
+#
+# Tests for install-lang.sh's bundle-completeness warning.
+#
+# Background: the python and typescript bundles shipped for nearly two months
+# with no githooks/pre-commit, so any project installing them got no
+# credential scan on commit. install-lang guarded each component copy with a
+# plain `[ -d ... ]`, so a missing component was indistinguishable from a
+# complete install — it printed nothing and exited 0.
+#
+# The fix is not "never miss a component" (a person will), it's "say so when
+# you do". These tests pin that: a complete bundle installs quietly, an
+# incomplete one names exactly what's absent, and neither case fails the
+# install — a warning must not become a new way to block work.
+
+REPO_ROOT="$(cd "$(dirname "$BATS_TEST_FILENAME")/../.." && pwd)"
+INSTALL="$REPO_ROOT/scripts/install-lang.sh"
+
+setup() {
+  TEST_DIR="$(mktemp -d -t install-lang-bats.XXXXXX)"
+  PROJECT="$TEST_DIR/proj"
+  mkdir -p "$PROJECT"
+  git init -q "$PROJECT"
+}
+
+teardown() {
+  rm -rf "$TEST_DIR"
+}
+
+# ---- Normal: a complete bundle is quiet ------------------------------
+
+@test "install-lang: a complete bundle warns about nothing" {
+  run env LANG_ARG=bash bash "$INSTALL" bash "$PROJECT"
+  [ "$status" -eq 0 ]
+  [[ "$output" != *"incomplete"* ]]
+}
+
+@test "install-lang: python is now a complete bundle" {
+  run bash "$INSTALL" python "$PROJECT"
+  [ "$status" -eq 0 ]
+  [[ "$output" != *"incomplete"* ]]
+  [ -f "$PROJECT/githooks/pre-commit" ]
+  [ -f "$PROJECT/.claude/settings.json" ]
+  [ -f "$PROJECT/.claude/hooks/validate-python.sh" ]
+}
+
+@test "install-lang: typescript is now a complete bundle" {
+  run bash "$INSTALL" typescript "$PROJECT"
+  [ "$status" -eq 0 ]
+  [[ "$output" != *"incomplete"* ]]
+  [ -f "$PROJECT/githooks/pre-commit" ]
+  [ -f "$PROJECT/.claude/settings.json" ]
+  [ -f "$PROJECT/.claude/hooks/validate-typescript.sh" ]
+}
+
+@test "install-lang: the installed pre-commit is executable" {
+  run bash "$INSTALL" python "$PROJECT"
+  [ "$status" -eq 0 ]
+  [ -x "$PROJECT/githooks/pre-commit" ]
+}
+
+# ---- Error: an incomplete bundle announces itself --------------------
+
+@test "install-lang: a bundle missing githooks/ warns and names it" {
+  fake="$REPO_ROOT/languages/zz-test-partial"
+  mkdir -p "$fake/claude/rules"
+  printf '# rule\n' > "$fake/claude/rules/zz.md"
+  run bash "$INSTALL" zz-test-partial "$PROJECT"
+  rm -rf "$fake"
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"incomplete"* ]]
+  [[ "$output" == *"githooks/pre-commit"* ]]
+}
+
+@test "install-lang: the warning names every missing component, not just the first" {
+  fake="$REPO_ROOT/languages/zz-test-partial"
+  mkdir -p "$fake/claude/rules"
+  printf '# rule\n' > "$fake/claude/rules/zz.md"
+  run bash "$INSTALL" zz-test-partial "$PROJECT"
+  rm -rf "$fake"
+  [[ "$output" == *"githooks/pre-commit"* ]]
+  [[ "$output" == *"settings.json"* ]]
+}
+
+@test "install-lang: an incomplete bundle still installs (warn, never block)" {
+  fake="$REPO_ROOT/languages/zz-test-partial"
+  mkdir -p "$fake/claude/rules"
+  printf '# rule\n' > "$fake/claude/rules/zz.md"
+  run bash "$INSTALL" zz-test-partial "$PROJECT"
+  rm -rf "$fake"
+  [ "$status" -eq 0 ]
+  [ -f "$PROJECT/.claude/rules/zz.md" ]
+}