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package main
import "testing"
func TestPlAdd(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 TestPlAddPop(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 TestPlAddPopTwice(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 TestPlAdd2AdjustPop(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()
}
}
func TestPlAdd3AdjustAdjustPop(t *testing.T) {
var pl Playlist
s1 := NewDummySong("Foo", "Bar")
s2 := NewDummySong("Nasen", "Baer")
s3 := NewDummySong("Hut", "Traeger")
pl.Add(s1)
pl.Add(s2)
pl.Add(s3)
if len(pl) != 3 {
t.Log("len should be 3")
t.Fail()
}
s1.Weight += 1
pl.Adjust(s1)
s2.Weight -= 1
pl.Adjust(s2)
s3.Weight += 1
pl.Adjust(s3)
ps := pl.PopSong()
if len(pl) != 2 {
t.Log("len should be 2")
t.Fail()
}
if ps == s2 {
t.Log("the popped ptr is the downvoted one")
t.Fail()
}
ps = pl.PopSong()
if len(pl) != 1 {
t.Log("len should be 1")
t.Fail()
}
if ps == s2 {
t.Log("the popped ptr is the downvoted one")
t.Fail()
}
}
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