add logging and tests fo playlist

1 files changed, 89 insertions, 0 deletions

diff --git a/playlist_test.go b/playlist_test.go
new file mode 100644
index 0000000..2fcb6b6
--- /dev/null
+++ b/playlist_test.go
@@ -0,0 +1,89 @@
+package main
+
+import "testing"
+
+func TestAdd(t *testing.T) {
+	var pl Playlist
+	s := NewDummySong("Foo", "Bar")
+	pl.Add(&s)
+	if len(pl) != 1 {
+		t.Log("len should be 1")
+		t.Fail()
+	}
+}
+
+func TestAddPop(t *testing.T) {
+	var pl Playlist
+	s := NewDummySong("Foo", "Bar")
+	pl.Add(&s)
+	if len(pl) != 1 {
+		t.Log("len should be 1")
+		t.Fail()
+	}
+
+	ps := pl.PopSong()
+	if len(pl) != 0 {
+		t.Log("len should be 0")
+		t.Fail()
+	}
+
+	if ps != &s {
+		t.Log("the popped ptr should match the one added")
+		t.Fail()
+	}
+}
+
+func TestAddPopTwice(t *testing.T) {
+	var pl Playlist
+	s1 := NewDummySong("Foo", "Bar")
+	s2 := NewDummySong("Nasen", "Baer")
+	pl.Add(&s1)
+	pl.Add(&s2)
+	if len(pl) != 2 {
+		t.Log("len should be 2")
+		t.Fail()
+	}
+
+	ps1 := pl.PopSong()
+	ps2 := pl.PopSong()
+	if len(pl) != 0 {
+		t.Log("len should be 0")
+		t.Fail()
+	}
+
+	if ps1 != &s1 {
+		t.Log("the popped ptr should match the one added")
+		t.Fail()
+	}
+
+	if ps2 != &s2 {
+		t.Log("the popped ptr should match the one added")
+		t.Fail()
+	}
+}
+
+func TestAdd2AdjustPop(t *testing.T) {
+	var pl Playlist
+	s1 := NewDummySong("Foo", "Bar")
+	s2 := NewDummySong("Nasen", "Baer")
+	pl.Add(&s1)
+	pl.Add(&s2)
+	if len(pl) != 2 {
+		t.Log("len should be 2")
+		t.Fail()
+	}
+
+	s2.Weight += 1
+	pl.Adjust(&s2)
+
+	ps := pl.PopSong()
+	if len(pl) != 1 {
+		t.Log("len should be 1")
+		t.Fail()
+	}
+
+	if ps != &s2 {
+		t.Log("the popped ptr should match the one adjusted")
+		t.Fail()
+	}
+}