{Name: "subfolder/another.go", Data: []byte("world"), Mode: 0644},
		// Notably missing here is the "subfolder" directory. This makes sure even
		// if we don't have a subfolder directory listed.
	}
	err := w.AddFS(writeTestsToFS(tests))
	if err != nil {
		t.Fatal(err)
	}
	if err := w.Close(); err != nil {
		t.Fatal(err)
	}

	// Add subfolder into fsys to match what we'll read from the zip.

		"emptyfolder":          {Mode: 0o755 | os.ModeDir},
		"file.go":              {Data: []byte("hello")},
		"subfolder/another.go": {Data: []byte("world")},
		"symlink.go":           {Mode: 0o777 | os.ModeSymlink, Data: []byte("file.go")},
		// Notably missing here is the "subfolder" directory. This makes sure even
		// if we don't have a subfolder directory listed.
	}
	var buf bytes.Buffer
	tw := NewWriter(&buf)