{"", "d", "", "", false},
	{"", "", "", "", true},
}

func TestCut(t *testing.T) {
	for _, tt := range cutTests {
		if before, after, found := Cut([]byte(tt.s), []byte(tt.sep)); string(before) != tt.before || string(after) != tt.after || found != tt.found {
			t.Errorf("Cut(%q, %q) = %q, %q, %v, want %q, %q, %v", tt.s, tt.sep, before, after, found, tt.before, tt.after, tt.found)
		}
	}
}

var cutPrefixTests = []struct {