Use actual git for tests and enhance Head

1 files changed, 29 insertions, 0 deletions

diff --git a/testutil_sha256_test.go b/testutil_sha256_test.go
new file mode 100644
index 00000000..70ed6f19
--- /dev/null
+++ b/testutil_sha256_test.go
@@ -0,0 +1,29 @@
+//go:build !sha1
+
+package furgit
+
+import (
+	"os"
+	"os/exec"
+	"testing"
+)
+
+func setupTestRepo(t *testing.T) (string, func()) {
+	t.Helper()
+	tempDir, err := os.MkdirTemp("", "furgit-test-*")
+	if err != nil {
+		t.Fatalf("failed to create temp dir: %v", err)
+	}
+	cleanup := func() {
+		_ = os.RemoveAll(tempDir)
+	}
+
+	cmd := exec.Command("git", "init", "--object-format=sha256", "--bare", tempDir)
+	cmd.Env = append(os.Environ(), "GIT_CONFIG_GLOBAL=/dev/null", "GIT_CONFIG_SYSTEM=/dev/null")
+	if output, err := cmd.CombinedOutput(); err != nil {
+		cleanup()
+		t.Fatalf("failed to init git repo: %v\n%s", err, output)
+	}
+
+	return tempDir, cleanup
+}