1 files changed, 28 insertions, 0 deletions
diff --git a/.githooks/pre-commit b/.githooks/pre-commit
new file mode 100755
index 0000000..b931987
--- /dev/null
+++ b/.githooks/pre-commit
@@ -0,0 +1,28 @@
+#!/bin/sh
+set -e
+
+# Pre-commit hook: run tests before allowing commit
+# Skip with: SKIP_PRE_COMMIT=1 git commit
+# Skip on force push: git commit --no-verify
+
+if [ "$SKIP_PRE_COMMIT" = "1" ]; then
+    exit 0
+fi
+
+# Only run tests if C/H/Makefile changed
+staged=$(git diff --cached --name-only --diff-filter=d)
+if echo "$staged" | grep -qE '\.(c|h)$|^Makefile$'; then
+    # Run build check
+    if ! make >/dev/null 2>&1; then
+        echo "PRE-COMMIT FAILED: build did not succeed."
+        exit 1
+    fi
+
+    # Run tests
+    if ! make test >/dev/null 2>&1; then
+        echo "PRE-COMMIT FAILED: tests did not pass."
+        exit 1
+    fi
+fi
+
+exit 0