github.com/slspeek/camlistore_namedsearch@v0.0.0-20140519202248-ed6f70f7721a/pkg/media/audio_test.go (about)

     1  /*
     2  Copyright 2014 The Camlistore Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8       http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package media
    18  
    19  import (
    20  	"io"
    21  	"os"
    22  	"path/filepath"
    23  	"testing"
    24  	"time"
    25  )
    26  
    27  // openFile opens fn, a file within the testdata dir, and returns an FD and the file's size.
    28  func openFile(fn string) (*os.File, int64, error) {
    29  	f, err := os.Open(filepath.Join("testdata", fn))
    30  	if err != nil {
    31  		return nil, 0, err
    32  	}
    33  	s, err := f.Stat()
    34  	if err != nil {
    35  		f.Close()
    36  		return nil, 0, err
    37  	}
    38  	return f, s.Size(), nil
    39  }
    40  
    41  func TestHasID3v1Tag(t *testing.T) {
    42  	tests := []struct {
    43  		fn     string
    44  		hasTag bool
    45  	}{
    46  		{"xing_header.mp3", false},
    47  		{"id3v1.mp3", true},
    48  	}
    49  	for _, tt := range tests {
    50  		f, s, err := openFile(tt.fn)
    51  		if err != nil {
    52  			t.Fatal(err)
    53  		}
    54  		defer f.Close()
    55  
    56  		hasTag, err := HasID3v1Tag(io.NewSectionReader(f, 0, s))
    57  		if err != nil {
    58  			t.Fatal(err)
    59  		}
    60  		if hasTag != tt.hasTag {
    61  			t.Errorf("Expected %v for %s but got %v", tt.hasTag, tt.fn, hasTag)
    62  		}
    63  	}
    64  }
    65  
    66  func TestGetMPEGAudioDuration(t *testing.T) {
    67  	tests := []struct {
    68  		fn string
    69  		d  time.Duration
    70  	}{
    71  		{"128_cbr.mp3", time.Duration(1088) * time.Millisecond},
    72  		{"xing_header.mp3", time.Duration(1097) * time.Millisecond},
    73  	}
    74  	for _, tt := range tests {
    75  		f, s, err := openFile(tt.fn)
    76  		if err != nil {
    77  			t.Fatal(err)
    78  		}
    79  		defer f.Close()
    80  
    81  		d, err := GetMPEGAudioDuration(io.NewSectionReader(f, 0, s))
    82  		if err != nil {
    83  			t.Fatal(err)
    84  		}
    85  		if d != tt.d {
    86  			t.Errorf("Expected %d for %s but got %d", tt.d, tt.fn, d)
    87  		}
    88  	}
    89  }