// ©2015 The Go Authors // Copyright ©2015 Steve Francia <spf@spf13.com> // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. package afero import "testing" func checkSizePath(t *testing.T, path string, size int64) { dir, err := testFS.Stat(path) if err != nil { t.Fatalf("Stat %q (looking for size %d): %s", path, size, err) } if dir.Size() != size { t.Errorf("Stat %q: size %d want %d", path, dir.Size(), size) } } func TestReadFile(t *testing.T) { testFS = &MemMapFs{} fsutil := &Afero{Fs: testFS} testFS.Create("this_exists.go") filename := "rumpelstilzchen" contents, err := fsutil.ReadFile(filename) if err == nil { t.Fatalf("ReadFile %s: error expected, none found", filename) } filename = "this_exists.go" contents, err = fsutil.ReadFile(filename) if err != nil { t.Fatalf("ReadFile %s: %v", filename, err) } checkSizePath(t, filename, int64(len(contents))) } func TestWriteFile(t *testing.T) { testFS = &MemMapFs{} fsutil := &Afero{Fs: testFS} f, err := fsutil.TempFile("", "ioutil-test") if err != nil { t.Fatal(err) } filename := f.Name() data := "Programming today is a race between software engineers striving to " + "build bigger and better idiot-proof programs, and the Universe trying " + "to produce bigger and better idiots. So far, the Universe is winning." if err := fsutil.WriteFile(filename, []byte(data), 0644); err != nil { t.Fatalf("WriteFile %s: %v", filename, err) } contents, err := fsutil.ReadFile(filename) if err != nil { t.Fatalf("ReadFile %s: %v", filename, err) } if string(contents) != data { t.Fatalf("contents = %q\nexpected = %q", string(contents), data) } // cleanup f.Close() testFS.Remove(filename) // ignore error } func TestReadDir(t *testing.T) { testFS = &MemMapFs{} testFS.Mkdir("/i-am-a-dir", 0777) testFS.Create("/this_exists.go") dirname := "rumpelstilzchen" _, err := ReadDir(testFS, dirname) if err == nil { t.Fatalf("ReadDir %s: error expected, none found", dirname) } dirname = ".." list, err := ReadDir(testFS, dirname) if err != nil { t.Fatalf("ReadDir %s: %v", dirname, err) } foundFile := false foundSubDir := false for _, dir := range list { switch { case !dir.IsDir() && dir.Name() == "this_exists.go": foundFile = true case dir.IsDir() && dir.Name() == "i-am-a-dir": foundSubDir = true } } if !foundFile { t.Fatalf("ReadDir %s: this_exists.go file not found", dirname) } if !foundSubDir { t.Fatalf("ReadDir %s: i-am-a-dir directory not found", dirname) } }