feat(adapter): registry with detect filtering and duplicate guard

internal/gitx/repo_test.go

@@ -0,0 +1,43 @@
+package gitx
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestInitAddCommit(t *testing.T) {
+	dir := t.TempDir()
+	r := New(dir)
+
+	require.NoError(t, r.Init())
+	require.NoError(t, r.Configure("nobody", "[email protected]"))
+
+	require.NoError(t, os.WriteFile(filepath.Join(dir, "a.txt"), []byte("hi"), 0o600))
+	require.NoError(t, r.AddAll())
+	require.NoError(t, r.Commit("initial"))
+
+	head, err := r.HeadCommit()
+	require.NoError(t, err)
+	assert.NotEmpty(t, head)
+}
+
+func TestShowFileAtHead(t *testing.T) {
+	dir := t.TempDir()
+	r := New(dir)
+	require.NoError(t, r.Init())
+	require.NoError(t, r.Configure("nobody", "[email protected]"))
+	require.NoError(t, os.WriteFile(filepath.Join(dir, "a.txt"), []byte("v1"), 0o600))
+	require.NoError(t, r.AddAll())
+	require.NoError(t, r.Commit("v1"))
+
+	body, err := r.ShowFileAtHead("a.txt")
+	require.NoError(t, err)
+	assert.Equal(t, "v1", string(body))
+
+	_, err = r.ShowFileAtHead("nope.txt")
+	assert.Error(t, err)
+}