if wants == "" {
				wants = test.in
			}
			if s != wants {
				t.Errorf("ParseAddr(%q).String() got %q, want %q", test.in, s, wants)
			}

			// Check that AppendTo matches MarshalText.
			TestAppendToMarshal(t, got)

			// Check that MarshalText/UnmarshalText work similarly to
			// ParseAddr/String (see TestIPMarshalUnmarshal for
			// marshal-specific behavior that's not common with
			// ParseAddr/String).