package wpdf

import (
	"testing"
)

func TestHexToColor(t *testing.T) {
	cases := []struct {
		in   uint32
		want PDFColor
	}{
		{0x000000, PDFColor{R: 0, G: 0, B: 0}},
		{0xFFFFFF, PDFColor{R: 255, G: 255, B: 255}},
		{0xFF0000, PDFColor{R: 255, G: 0, B: 0}},
		{0x00FF00, PDFColor{R: 0, G: 255, B: 0}},
		{0x0000FF, PDFColor{R: 0, G: 0, B: 255}},
		{0x123456, PDFColor{R: 0x12, G: 0x34, B: 0x56}},
		{0xC0C0C0, PDFColor{R: 192, G: 192, B: 192}},
	}
	for _, c := range cases {
		got := hexToColor(c.in)
		if got != c.want {
			t.Errorf("hexToColor(%#x) = %+v, want %+v", c.in, got, c.want)
		}
	}
}

func TestHexToColorIgnoresHigherBits(t *testing.T) {
	got := hexToColor(0xFF123456)
	want := PDFColor{R: 0x12, G: 0x34, B: 0x56}
	if got != want {
		t.Errorf("hexToColor(0xFF123456) = %+v, want %+v", got, want)
	}
}

func TestRgbToColor(t *testing.T) {
	got := rgbToColor(10, 20, 30)
	want := PDFColor{R: 10, G: 20, B: 30}
	if got != want {
		t.Errorf("rgbToColor(10,20,30) = %+v, want %+v", got, want)
	}
}