func TestPickColorKnown(t *testing.T) {
for idx, test := range []struct {
input uint64
expect color.Color
}{
{9000, white},
{100, red},
{0, red},
{1024, white},
{768, green},
{512, yellow},
{256, red},
} {
// if it goes through mixing, it's converted to RGBA64
if g, e := sparkline.PickColor(trafficLights, test.input), color.RGBA64Model.Convert(test.expect); g != e {
t.Errorf("#%d: value %d wrong color: %v != %v", idx, test.input, g, e)
}
}
}
func TestPickColorEmpty(t *testing.T) {
if g, e := sparkline.PickColor(nil, 42), color.Black; g != e {
t.Errorf("wrong color for empty slice: %v != %v", g, e)
}
}