| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package ioutil_test |
| |
| import ( |
| . "io/ioutil" |
| "os" |
| "strings" |
| "testing" |
| ) |
| |
| func checkSize(t *testing.T, path string, size uint64) { |
| dir, err := os.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) { |
| filename := "rumpelstilzchen" |
| contents, err := ReadFile(filename) |
| if err == nil { |
| t.Fatalf("ReadFile %s: error expected, none found", filename) |
| } |
| |
| filename = "ioutil_test.go" |
| contents, err = ReadFile(filename) |
| if err != nil { |
| t.Fatalf("ReadFile %s: %v", filename, err) |
| } |
| |
| checkSize(t, filename, uint64(len(contents))) |
| } |
| |
| func TestWriteFile(t *testing.T) { |
| filename := "_obj/rumpelstilzchen" |
| 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 := WriteFile(filename, strings.Bytes(data), 0644); err != nil { |
| t.Fatalf("WriteFile %s: %v", filename, err) |
| } |
| |
| contents, err := 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 |
| os.Remove(filename) // ignore error |
| } |
| |
| |
| func TestReadDir(t *testing.T) { |
| dirname := "rumpelstilzchen" |
| _, err := ReadDir(dirname) |
| if err == nil { |
| t.Fatalf("ReadDir %s: error expected, none found", dirname) |
| } |
| |
| dirname = "." |
| list, err := ReadDir(dirname) |
| if err != nil { |
| t.Fatalf("ReadDir %s: %v", dirname, err) |
| } |
| |
| foundTest := false |
| foundObj := false |
| for _, dir := range list { |
| switch { |
| case dir.IsRegular() && dir.Name == "ioutil_test.go": |
| foundTest = true |
| case dir.IsDirectory() && dir.Name == "_obj": |
| foundObj = true |
| } |
| } |
| if !foundTest { |
| t.Fatalf("ReadDir %s: test file not found", dirname) |
| } |
| if !foundObj { |
| t.Fatalf("ReadDir %s: _obj directory not found", dirname) |
| } |
| } |