{rune(0xd7ff), false}, // surr1-1
	{rune(0xd800), true},  // surr1
	{rune(0xdc00), true},  // surr2
	{rune(0xe000), false}, // surr3
	{rune(0xdfff), true},  // surr3-1
}

func TestIsSurrogate(t *testing.T) {
	for i, tt := range surrogateTests {
		got := IsSurrogate(tt.r)
		if got != tt.want {
			t.Errorf("%d: IsSurrogate(%q) = %v; want %v", i, tt.r, got, tt.want)
		}
	}
}