[tracker-miners: 2/3] functional-tests: Add a new flac extraction test for gstreamer 1.18

[Sam Thursfield <sthursfield src gnome org>]

commit cea52a29294689184371d887acb1326be0cf5852
Author: Jean Felder <jfelder src gnome org>
Date:   Wed Feb 26 22:15:37 2020 +0100

    functional-tests: Add a new flac extraction test for gstreamer 1.18
    
    Gstreamer 1.18 introduced support for the following MusicBrainz
    identifiers:
     - track id (GST_TAG_MUSICBRAINZ_RELEASETRACKID)
     - fingerprint id (GST_TAG_ACOUSTID_FINGERPRINT)
     - release-group id (GST_TAG_MUSICBRAINZ_RELEASEGROUPID)
     See:
     https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/252
    
    A new test called 'flac-musicbrainz' is added to check that those tags
    are correctly extraced for gstreamer 1.18.0. The existing 'flac' test is
    now only executed for the previous versions of gstreamer. Boths tests
    extract the information from the same audio file (flac.flac).

 tests/functional-tests/meson.build                 |  9 ++-
 .../audio/flac-musicbrainz.expected.json           | 80 ++++++++++++++++++++++
 2 files changed, 88 insertions(+), 1 deletion(-)
---
diff --git a/tests/functional-tests/meson.build b/tests/functional-tests/meson.build
index 402423eda..8a996432c 100644
--- a/tests/functional-tests/meson.build
+++ b/tests/functional-tests/meson.build
@@ -34,11 +34,18 @@ extractor_tests = [
   'audio/mp3-id3v2.4-1',
   'audio/mp3-id3v2.3-empty-artist-album',
   'audio/mp3-id3v2.4-2',
-  'audio/flac',
   'desktop/application',
   'desktop/link-wikipedia-tracker'
 ]
 
+# Gstreamer 1.18 introduced support for some additionnals
+# MusicBrainz tags
+if gstreamer.found() and gstreamer.version() >= '1.18.0'
+  extractor_tests += 'audio/flac-musicbrainz'
+else
+  extractor_tests += 'audio/flac'
+endif
+
 if libvorbis.found()
   extractor_tests += 'audio/vorbis'
 endif
diff --git a/tests/functional-tests/test-extraction-data/audio/flac-musicbrainz.expected.json 
b/tests/functional-tests/test-extraction-data/audio/flac-musicbrainz.expected.json
new file mode 100644
index 000000000..b3b623a8a
--- /dev/null
+++ b/tests/functional-tests/test-extraction-data/audio/flac-musicbrainz.expected.json
@@ -0,0 +1,80 @@
+{
+    "test": {
+        "Filename": "flac.flac"
+    },
+    "metadata": {
+        "@type": [
+            "nfo:Audio",
+            "nmm:MusicPiece"
+        ],
+        "nfo:channels": "2",
+        "nfo:duration": "10",
+        "nfo:genre": "Rock",
+        "nfo:sampleRate": "44100",
+        "nie:comment": "no comment",
+        "nie:contentCreated": "2020-01-01T00:00:00+00:00",
+        "nie:copyright": "none",
+        "nie:title": "track title",
+        "nmm:trackNumber": "12",
+        "nmm:musicAlbum": {
+            "@type": "nmm:MusicAlbum",
+            "nie:title": "awesome album",
+            "nmm:albumTrackCount": "28",
+            "nmm:albumArtist": [
+                {
+                    "@type": "nmm:Artist",
+                    "nmm:artistName": "my album artist"
+                }
+            ],
+            "tracker:hasExternalReference": [
+                {
+                    "@id": "https://musicbrainz.org/release/524387feg";,
+                    "@type": "tracker:ExternalReference",
+                    "tracker:referenceSource": "https://musicbrainz.org/doc/Release";,
+                    "tracker:referenceIdentifier": "524387feg"
+                },
+                {
+                    "@id": "https://musicbrainz.org/release-group/34-458923-kbe";,
+                    "@type": "tracker:ExternalReference",
+                    "tracker:referenceSource": "https://musicbrainz.org/doc/Release_Group";,
+                    "tracker:referenceIdentifier": "34-458923-kbe"
+                }
+            ]
+        },
+        "nmm:musicAlbumDisc": {
+            "@type": "nmm:MusicAlbumDisc",
+            "nmm:setNumber": 1
+        },
+        "nmm:performer": {
+            "@type": "nmm:Artist",
+            "nmm:artistName": "my artist",
+            "tracker:hasExternalReference": [
+                {
+                    "@id": "https://musicbrainz.org/artist/789-feg-7854";,
+                    "@type": "tracker:ExternalReference",
+                    "tracker:referenceSource": "https://musicbrainz.org/doc/Artist";,
+                    "tracker:referenceIdentifier": "789-feg-7854"
+                }
+            ]
+        },
+        "tracker:hasExternalReference": [
+            {
+                "@id": "https://musicbrainz.org/recording/4-8-15-16-23-42-lost";,
+                "@type": "tracker:ExternalReference",
+                "tracker:referenceSource": "https://musicbrainz.org/doc/Recording";,
+                "tracker:referenceIdentifier": "4-8-15-16-23-42-lost"
+            },
+            {
+                "@id": "https://musicbrainz.org/track/dfgj-432-iu7";,
+                "@type": "tracker:ExternalReference",
+                "tracker:referenceSource": "https://musicbrainz.org/doc/Track";,
+                "tracker:referenceIdentifier": "dfgj-432-iu7"
+            }
+        ],
+        "nfo:hasHash": {
+            "@type": "nfo:hasHash",
+            "nfo:hashAlgorithm": "chromaprint",
+            "nfo:hashValue": "123453215"
+        }
+    }
+}