[alies-dev]

A test parameter typed with an imported type alias is compared with the provider's datasets without expanding the alias, so the message names type-alias(...) and differs from the same parameter typed with the shape.

Before

/** @psalm-type Options = array{host: string} */
final class Connection {}

/** @psalm-import-type Options from Connection */
final class MyTestCase extends TestCase {
    /**
     * @return list<array{array<string, string>}>
     * @psalm-pure
     */
    public static function provide(): array {
        return [[['host' => 'x']]];
    }

    /**
     * @param Options $options
     */
    #[DataProvider('provide')]
    public function testAlias(array $options): void { // InvalidArgument: Argument 1 of NS\MyTestCase::testAlias expects type-alias(NS\Connection::Options), array<string, string> provided by NS\MyTestCase::provide():(list<list{array<string, string>}>)
        $this->assertSame('x', $options['host']);
    }
}

After

    public function testAlias(array $options): void { // ArgumentTypeCoercion: Argument 1 of NS\MyTestCase::testAlias expects array{host: string}, but parent type array<string, string> provided by NS\MyTestCase::provide():(list<list{array<string, string>}>)

self in a trait's provider and test types is resolved to the class using the trait.

Fixes #249