return v1 == v2 || (isNaN(v1) && isNaN(v2))
}

// equalStr compares ints and strings.
func equalIntStr(v1 int, v2 string) bool {
	return strconv.Itoa(v1) == v2
}

func TestEqualFunc(t *testing.T) {
	if !EqualFunc(m1, m1, equal[int]) {
		t.Errorf("EqualFunc(%v, %v, equal) = false, want true", m1, m1)
	}
	if EqualFunc(m1, (map[int]int)(nil), equal[int]) {

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := Equal(tt.s1, tt.s2)
			if got != tt.want {
				t.Errorf("Equal() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestEqualFunc(t *testing.T) {
	tests := []struct {
		name string
		s1   []int
		s2   []int
		eq   func(int, int) bool
		want bool
	}{
		{
			name: "Equal slices",
			s1:   []int{1, 2, 3},
			s2:   []int{1, 2, 3},

	return v1 == v2 || (isNaN(v1) && isNaN(v2))
}

// offByOne returns true if integers v1 and v2 differ by 1.
func offByOne(v1, v2 int) bool {
	return v1 == v2+1 || v1 == v2-1
}

func TestEqualFunc(t *testing.T) {
	for _, test := range equalIntTests {
		if got := EqualFunc(test.s1, test.s2, equal[int]); got != test.want {
			t.Errorf("EqualFunc(%v, %v, equal[int]) = %t, want %t", test.s1, test.s2, got, test.want)
		}