snapshot of https://github.com/go-gitea/gitea.git (main, 2026-09-15; blobs > 131072B omitted)

modules/git/tree_entry_common_test.go

@@ -0,0 +1,77 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package git
+
+import (
+	"path/filepath"
+	"testing"
+
+	"gitea.dev/modules/util"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFollowLink(t *testing.T) {
+	r, err := OpenRepositoryLocal(t.Context(), filepath.Join(testReposDir, "repo1_bare"))
+	require.NoError(t, err)
+	defer r.Close()
+
+	commit, err := r.GetCommit(t.Context(), "37991dec2c8e592043f47155ce4808d4580f9123")
+	require.NoError(t, err)
+
+	// get the symlink
+	{
+		lnkFullPath := "foo/bar/link_to_hello"
+		lnk, err := commit.Tree().GetTreeEntryByPath(t.Context(), r, "foo/bar/link_to_hello")
+		require.NoError(t, err)
+		assert.True(t, lnk.IsLink())
+
+		// should be able to dereference to target
+		res, err := EntryFollowLink(t.Context(), r, commit, lnkFullPath, lnk)
+		require.NoError(t, err)
+		assert.Equal(t, "hello", res.TargetEntry.Name())
+		assert.Equal(t, "foo/nar/hello", res.TargetFullPath)
+		assert.False(t, res.TargetEntry.IsLink())
+		assert.Equal(t, "b14df6442ea5a1b382985a6549b85d435376c351", res.TargetEntry.ID.String())
+	}
+
+	{
+		// should error when called on a normal file
+		entry, err := commit.Tree().GetTreeEntryByPath(t.Context(), r, "file1.txt")
+		require.NoError(t, err)
+		res, err := EntryFollowLink(t.Context(), r, commit, "file1.txt", entry)
+		assert.ErrorIs(t, err, util.ErrUnprocessableContent)
+		assert.Nil(t, res)
+	}
+
+	{
+		// should error for broken links
+		entry, err := commit.Tree().GetTreeEntryByPath(t.Context(), r, "foo/broken_link")
+		require.NoError(t, err)
+		assert.True(t, entry.IsLink())
+		res, err := EntryFollowLink(t.Context(), r, commit, "foo/broken_link", entry)
+		assert.ErrorIs(t, err, util.ErrNotExist)
+		assert.Equal(t, "nar/broken_link", res.SymlinkContent)
+	}
+
+	{
+		// should error for external links
+		entry, err := commit.Tree().GetTreeEntryByPath(t.Context(), r, "foo/outside_repo")
+		require.NoError(t, err)
+		assert.True(t, entry.IsLink())
+		res, err := EntryFollowLink(t.Context(), r, commit, "foo/outside_repo", entry)
+		assert.ErrorIs(t, err, util.ErrNotExist)
+		assert.Equal(t, "../../outside_repo", res.SymlinkContent)
+	}
+
+	{
+		// testing fix for short link bug
+		entry, err := commit.Tree().GetTreeEntryByPath(t.Context(), r, "foo/link_short")
+		require.NoError(t, err)
+		res, err := EntryFollowLink(t.Context(), r, commit, "foo/link_short", entry)
+		assert.ErrorIs(t, err, util.ErrNotExist)
+		assert.Equal(t, "a", res.SymlinkContent)
+	}
+}