Track: Begin a new Track constructor

I want to provide the Library, Artist, Album, and Genre tags to the
Track on construction to (hopefully) eliminate the Track::tag()
function.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

core/tags/track.cpp

@@ -11,4 +11,10 @@ Track :: Track()
 	 track(0), length(0), play_count(0), last_year(0), last_month(0), last_day(0)
 {}
 
+Track :: Track(Library *library)
+       : _library(library)
+{
+	_library->inc_size();
+}
+
 Library *Track :: library() { return _library; }

include/core/tags/track.h

@@ -76,6 +76,13 @@ public:
 	/** Track constructor */
 	Track();
 
+	/**
+	 * Track constructor
+	 *
+	 * @param  library  The library containing this track.
+	 */
+	Track(Library *);
+
 	/**
 	 * Track constructor
 	 * @param  filepath  Filepath of the track

tests/core/tags/track.cpp

@@ -5,7 +5,7 @@
 #include <core/tags/track.h>
 #include <tests/test.h>
 
-static void test_track_tag()
+static void test_track_tag_default()
 {
 	Track track;
 
@@ -30,8 +30,18 @@ static void test_track_tag()
 	test_equal(track.last_day,   (unsigned)0);
 }
 
+static void test_track_tag_constructor()
+{
+	Library *library = tags :: get_library("/home/Zelda/Music");
+	Track track(library);
+
+	test_equal(track.library(), library);
+	test_equal(track.library()->size(), (unsigned)1);
+}
+
 int main(int argc, char **argv)
 {
-	run_test("Track Tag Test", test_track_tag);
+	run_test("Track Tag Default Constructor Test", test_track_tag_default);
+	run_test("Track Tag Constructor Test", test_track_tag_constructor);
 	return 0;
 }