"My-Key":   {"Value 1", "Value 2"},
		"Long-Key": {"Even Longer Value"},
	}
	if !reflect.DeepEqual(m, want) || err != nil {
		t.Fatalf("ReadMIMEHeader: %v, %v; want %v", m, err, want)
	}
}

func TestReadMIMEHeaderSingle(t *testing.T) {
	r := reader("Foo: bar\n\n")
	m, err := r.ReadMIMEHeader()
	want := MIMEHeader{"Foo": {"bar"}}
	if !reflect.DeepEqual(m, want) || err != nil {