// Copyright 2023 The Dawn & Tint Authors
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//    this list of conditions and the following disclaimer in the documentation
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package expectations_test

import (
	"testing"

	"dawn.googlesource.com/dawn/tools/src/container"
	"dawn.googlesource.com/dawn/tools/src/cts/expectations"
	"github.com/google/go-cmp/cmp"
)

func TestRemoveLowerPriorityTags(t *testing.T) {
	tags := expectations.Tags{
		Sets: []expectations.TagSet{
			{
				Name: "OS",
				Tags: container.NewSet(
					"os_a",
					"os_b",
					"os_c",
				),
			},
			{
				Name: "GPU",
				Tags: container.NewSet(
					"gpu_a",
					"gpu_b",
					"gpu_c",
				),
			},
		},
		ByName: map[string]expectations.TagSetAndPriority{
			"os_a":  {Set: "OS", Priority: 0},
			"os_b":  {Set: "OS", Priority: 1},
			"os_c":  {Set: "OS", Priority: 2},
			"gpu_a": {Set: "GPU", Priority: 0},
			"gpu_b": {Set: "GPU", Priority: 1},
			"gpu_c": {Set: "GPU", Priority: 2},
		},
	}
	type Test struct {
		in       []string
		expected []string
	}
	for _, test := range []Test{
		{in: []string{"os_a"}, expected: []string{"os_a"}},
		{in: []string{"gpu_b"}, expected: []string{"gpu_b"}},
		{in: []string{"gpu_b", "os_a"}, expected: []string{"gpu_b", "os_a"}},
		{in: []string{"gpu_a", "gpu_b"}, expected: []string{"gpu_b"}},
		{in: []string{"gpu_b", "gpu_c"}, expected: []string{"gpu_c"}},
		{in: []string{"os_a", "os_b"}, expected: []string{"os_b"}},
		{in: []string{"os_b", "os_c"}, expected: []string{"os_c"}},
		{in: []string{"gpu_a", "gpu_c", "os_b", "os_c"}, expected: []string{"gpu_c", "os_c"}},
	} {
		got := tags.RemoveLowerPriorityTags(container.NewSet(test.in...)).List()
		if diff := cmp.Diff(got, test.expected); diff != "" {
			t.Errorf("TestRemoveLowerPriorityTags(%v) returned %v:\n%v", test.in, got, diff)
		}
	}
}