1 files changed, 98 insertions, 0 deletions
diff --git a/modules/assetfs/embed_test.go b/modules/assetfs/embed_test.go
new file mode 100644
index 0000000000..06598da4c4
--- /dev/null
+++ b/modules/assetfs/embed_test.go
@@ -0,0 +1,98 @@
+// Copyright 2025 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package assetfs
+
+import (
+	"bytes"
+	"io/fs"
+	"net/http"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestEmbed(t *testing.T) {
+	tmpDir := t.TempDir()
+	tmpDataDir := tmpDir + "/data"
+	_ = os.MkdirAll(tmpDataDir+"/foo/bar", 0o755)
+	_ = os.WriteFile(tmpDataDir+"/a.txt", []byte("a"), 0o644)
+	_ = os.WriteFile(tmpDataDir+"/foo/bar/b.txt", bytes.Repeat([]byte("a"), 1000), 0o644)
+	_ = os.WriteFile(tmpDataDir+"/foo/c.txt", []byte("c"), 0o644)
+	require.NoError(t, GenerateEmbedBindata(tmpDataDir, tmpDir+"/out.dat"))
+
+	data, err := os.ReadFile(tmpDir + "/out.dat")
+	require.NoError(t, err)
+	efs := NewEmbeddedFS(data)
+
+	// test a non-existing file
+	_, err = fs.ReadFile(efs, "not exist")
+	assert.ErrorIs(t, err, fs.ErrNotExist)
+
+	// test a normal file (no compression)
+	content, err := fs.ReadFile(efs, "a.txt")
+	require.NoError(t, err)
+	assert.Equal(t, "a", string(content))
+	fi, err := fs.Stat(efs, "a.txt")
+	require.NoError(t, err)
+	_, ok := fi.(EmbeddedFileInfo).GetGzipContent()
+	assert.False(t, ok)
+
+	// test a compressed file
+	content, err = fs.ReadFile(efs, "foo/bar/b.txt")
+	require.NoError(t, err)
+	assert.Equal(t, bytes.Repeat([]byte("a"), 1000), content)
+	fi, err = fs.Stat(efs, "foo/bar/b.txt")
+	require.NoError(t, err)
+	assert.False(t, fi.Mode().IsDir())
+	assert.True(t, fi.Mode().IsRegular())
+	gzipContent, ok := fi.(EmbeddedFileInfo).GetGzipContent()
+	assert.True(t, ok)
+	assert.Greater(t, len(gzipContent), 1)
+	assert.Less(t, len(gzipContent), 1000)
+
+	// test list root directory
+	entries, err := fs.ReadDir(efs, ".")
+	require.NoError(t, err)
+	assert.Len(t, entries, 2)
+	assert.Equal(t, "a.txt", entries[0].Name())
+	assert.False(t, entries[0].IsDir())
+
+	// test list subdirectory
+	entries, err = fs.ReadDir(efs, "foo")
+	require.NoError(t, err)
+	require.Len(t, entries, 2)
+	assert.Equal(t, "bar", entries[0].Name())
+	assert.True(t, entries[0].IsDir())
+	assert.Equal(t, "c.txt", entries[1].Name())
+	assert.False(t, entries[1].IsDir())
+
+	// test directory mode
+	fi, err = fs.Stat(efs, "foo")
+	require.NoError(t, err)
+	assert.True(t, fi.IsDir())
+	assert.True(t, fi.Mode().IsDir())
+	assert.False(t, fi.Mode().IsRegular())
+
+	// test httpfs
+	hfs := http.FS(efs)
+	hf, err := hfs.Open("foo/bar/b.txt")
+	require.NoError(t, err)
+	hi, err := hf.Stat()
+	require.NoError(t, err)
+	fiEmbedded, ok := hi.(EmbeddedFileInfo)
+	require.True(t, ok)
+	gzipContent, ok = fiEmbedded.GetGzipContent()
+	assert.True(t, ok)
+	assert.Greater(t, len(gzipContent), 1)
+	assert.Less(t, len(gzipContent), 1000)
+
+	// test httpfs directory listing
+	hf, err = hfs.Open("foo")
+	require.NoError(t, err)
+	dirs, err := hf.Readdir(1)
+	require.NoError(t, err)
+	assert.Len(t, dirs, 1)
+}