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// ©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 (
"path/filepath"
"strings"
"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"
_, 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), 0o644); 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", 0o777)
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)
}
}
func TestTempFile(t *testing.T) {
type args struct {
dir string
pattern string
}
tests := map[string]struct {
args args
want func(*testing.T, string)
}{
"foo": { // simple file name
args: args{
dir: "",
pattern: "foo",
},
want: func(t *testing.T, base string) {
if !strings.HasPrefix(base, "foo") || len(base) <= len("foo") {
t.Errorf("TempFile() file = %s, invalid file name", base)
}
},
},
"foo.bar": { // file name w/ ext
args: args{
dir: "",
pattern: "foo.bar",
},
want: func(t *testing.T, base string) {
if !strings.HasPrefix(base, "foo.bar") || len(base) <= len("foo.bar") {
t.Errorf("TempFile() file = %v, invalid file name", base)
}
},
},
"foo-*.bar": { // file name with wild card
args: args{
dir: "",
pattern: "foo-*.bar",
},
want: func(t *testing.T, base string) {
if !(strings.HasPrefix(base, "foo-") || strings.HasPrefix(base, "bar")) ||
len(base) <= len("foo-*.bar") {
t.Errorf("TempFile() file = %v, invalid file name", base)
}
},
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
file, err := TempFile(NewMemMapFs(), tt.args.dir, tt.args.pattern)
if err != nil {
t.Errorf("TempFile() error = %v, none expected", err)
return
}
if file == nil {
t.Errorf("TempFile() file = %v, should not be nil", file)
return
}
tt.want(t, filepath.Base(file.Name()))
})
}
}
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