38     Meta meta;  variable
40     meta.Set<Tag::AUDIO_CHANNELS>(channels);
42     ASSERT_TRUE(meta.Get<Tag::AUDIO_CHANNELS>(outChannels));
48     Meta meta;  variable
50     ASSERT_FALSE(meta.Get<Tag::AUDIO_CHANNELS>(canNotGet));
55     Meta meta;  variable
57     meta.Set<Tag::MEDIA_TITLE>(artist);
59     ASSERT_TRUE(meta.Get<Tag::MEDIA_TITLE>(outArtist));
65     Meta meta;  variable
67 …  meta.Set<Tag::MEDIA_ARTIST>(in); // this is only for test, normally MEDIA_ARTIST should be string
69     ASSERT_TRUE(meta.Get<Tag::MEDIA_ARTIST>(out));
75     Meta meta;  variable
77     meta.Set<Tag::AUDIO_CHANNELS>(channels);
79     ASSERT_FALSE(meta.Get<Tag::MEDIA_BITRATE>(bitRate));
84     Meta meta;  variable
86     meta.Set<Tag::AUDIO_CHANNELS>(channels);
88     ASSERT_TRUE(meta.Get<Tag::AUDIO_CHANNELS>(out));
90     meta.Remove(Tag::AUDIO_CHANNELS);
91     ASSERT_FALSE(meta.Get<Tag::AUDIO_CHANNELS>(out));
96     Meta meta;  variable
100     meta.Set<Tag::MEDIA_TITLE>(title);
101     meta.Set<Tag::MEDIA_ALBUM>(album);
102     meta.Set<Tag::AUDIO_CHANNELS>(channels);
103     meta.Clear();
105     ASSERT_FALSE(meta.Get<Tag::MEDIA_TITLE>(out));
107     ASSERT_FALSE(meta.Get<Tag::MEDIA_ALBUM>(out));
110     ASSERT_FALSE(meta.Get<Tag::AUDIO_CHANNELS>(oChannels));
116     Meta meta;  variable
120     meta.Set<Tag::MEDIA_TITLE>(title);
121     meta.Set<Tag::MEDIA_ALBUM>(album);
122     meta.Set<Tag::AUDIO_CHANNELS>(channels);
128     meta = meta2;
130     ASSERT_FALSE(meta.Get<Tag::MEDIA_TITLE>(out));
132     ASSERT_FALSE(meta.Get<Tag::MEDIA_ALBUM>(out));
135     ASSERT_TRUE(meta.Get<Tag::AUDIO_CHANNELS>(oChannel));
141     Meta meta;  variable
142     ASSERT_TRUE(meta.Set<Tag::MEDIA_DURATION>(10000));
143     ASSERT_TRUE(meta.Set<Tag::MEDIA_FILE_SIZE>(500));
145     ASSERT_TRUE(meta.Get<Tag::MEDIA_DURATION>(value));
148     ASSERT_TRUE(meta.Get<Tag::MEDIA_FILE_SIZE>(size));
154     Meta meta;  variable
155     ASSERT_TRUE(meta.Set<Tag::TRACK_ID>(10000));
157     ASSERT_TRUE(meta.Get<Tag::TRACK_ID>(value));
163     Meta meta;  variable
164     meta.Set<Plugin::Tag::AUDIO_MPEG_VERSION>(1);
165     meta.Set<Plugin::Tag::AUDIO_CHANNELS>(2);
166     std::shared_ptr<Capability> cap = MetaToCapability(meta);
175     Meta meta;  variable
176     meta.Set<Plugin::Tag::AUDIO_MPEG_VERSION>(1);
177     meta.Set<Plugin::Tag::AUDIO_CHANNELS>(2);
178     std::string string = Meta2String(meta);