package graphdriver // import "github.com/docker/docker/daemon/graphdriver" import ( "io/ioutil" "os" "path/filepath" "testing" "gotest.tools/assert" ) func TestIsEmptyDir(t *testing.T) { tmp, err := ioutil.TempDir("", "test-is-empty-dir") assert.NilError(t, err) defer os.RemoveAll(tmp) d := filepath.Join(tmp, "empty-dir") err = os.Mkdir(d, 0755) assert.NilError(t, err) empty := isEmptyDir(d) assert.Check(t, empty) d = filepath.Join(tmp, "dir-with-subdir") err = os.MkdirAll(filepath.Join(d, "subdir"), 0755) assert.NilError(t, err) empty = isEmptyDir(d) assert.Check(t, !empty) d = filepath.Join(tmp, "dir-with-empty-file") err = os.Mkdir(d, 0755) assert.NilError(t, err) _, err = ioutil.TempFile(d, "file") assert.NilError(t, err) empty = isEmptyDir(d) assert.Check(t, !empty) }