v/vlib/v/tests/generic_sumtype_insts_test.v

struct Foo<T> {
	x T
}

struct Bar<T> {
	x T
}

type MyType<T> = Bar<T> | Foo<T>

fn test_generic_sumtype_insts() {
	f := Foo<string>{'hi'}
	t := MyType<string>(f)
	println(t.type_name())
	assert t.type_name() == 'Foo<string>'
}