// Copyright 2022 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package result_test

import (
	"testing"

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

func TestCommonStatus(t *testing.T) {
	pass := result.Pass

	type Test struct {
		in     []result.Status
		expect *result.Status
	}
	for _, test := range []Test{
		{
			in:     nil,
			expect: nil,
		}, {
			in:     []result.Status{},
			expect: nil,
		}, {
			in:     []result.Status{result.Pass},
			expect: &pass,
		}, {
			in:     []result.Status{result.Pass, result.Pass, result.Pass},
			expect: &pass,
		}, {
			in:     []result.Status{result.Pass, result.Failure, result.Pass},
			expect: nil,
		},
	} {
		got := result.CommonStatus(test.in)
		if diff := cmp.Diff(got, test.expect); diff != "" {
			t.Errorf("%v.CommonStatus('%v') was not as expected:\n%v", test.in, test.expect, diff)
		}
	}
}