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// Copyright 2025 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package main
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestFullCombinations(t *testing.T) {
t.Run("empty", func(t *testing.T) {
assert.Len(t, CoveringArray([][]string{}, 0), 0)
})
t.Run("single", func(t *testing.T) {
assert.Equal(t, [][]string{
{"A", "B", "C"},
}, CoveringArray([][]string{
{"A"},
{"B"},
{"C"},
}, 0))
})
t.Run("binary", func(t *testing.T) {
assert.Equal(t, [][]string{
{"A", "B", "C"},
{"A", "B", "c"},
{"A", "b", "C"},
{"A", "b", "c"},
{"a", "B", "C"},
{"a", "B", "c"},
{"a", "b", "C"},
{"a", "b", "c"},
}, CoveringArray([][]string{
{"A", "a"},
{"B", "b"},
{"C", "c"},
}, 0))
})
}
func TestPairCombinations(t *testing.T) {
// Theoretically, there may be multiple correct answers.
// For now, let's keep the current algorithm's output so that if the code behavior changes unexpectedly,
// we'd notice.
assert.Equal(t, [][]string{
{"A", "B", "C"},
{"A", "b", "c"},
{"a", "B", "c"},
{"a", "b", "C"},
}, CoveringArray([][]string{
{"A", "a"},
{"B", "b"},
{"C", "c"},
}, 4))
}
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