package world

import "testing"

func TestPlacedOresUseStoneAndDeepslateTargets(t *testing.T) {
	gen := NewVanillaGenerator(12345)
	want := map[uint16]string{
		131:  "iron ore",
		132:  "deepslate iron ore",
		5307: "diamond ore",
		5308: "deepslate diamond ore",
	}
	counts := make(map[uint16]int)
	for cx := int32(-8); cx <= 8; cx += 4 {
		for cz := int32(-8); cz <= 8; cz += 4 {
			chunk := gen(cx, cz)
			for y := MinY; y < 128; y++ {
				for x := 0; x < 16; x++ {
					for z := 0; z < 16; z++ {
						counts[chunk.GetBlock(x, y, z)]++
					}
				}
			}
		}
	}
	for state, name := range want {
		if counts[state] == 0 {
			t.Errorf("no %s generated by placed ore features", name)
		}
	}
}

func TestPlacedOresAreDeterministic(t *testing.T) {
	gen := NewVanillaGenerator(4242)
	a, b := gen(3, -2), gen(3, -2)
	for y := MinY; y < MinY+WorldHeight; y++ {
		for x := 0; x < 16; x++ {
			for z := 0; z < 16; z++ {
				if got, want := a.GetBlock(x, y, z), b.GetBlock(x, y, z); got != want {
					t.Fatalf("block (%d,%d,%d): first %d second %d", x, y, z, got, want)
				}
			}
		}
	}
}