/**
* Update the interfaces to know about this implementation.
* This is an rare and unfortunate use of mutation in the type definition
* implementations, but avoids an expensive "getPossibleTypes"
* implementation for Interface types.
*
* @param ObjectType $impl
* @param InterfaceType[] $interfaces
*/
public static function addImplementationToInterfaces(ObjectType $impl)
{
foreach ($impl->getInterfaces() as $interface) {
$interface->_implementations[] = $impl;
}
}
public function testAllowsRecursiveDefinitions()
{
// See https://github.com/webonyx/graphql-php/issues/16
$node = new InterfaceType(['name' => 'Node', 'fields' => ['id' => ['type' => Type::nonNull(Type::id())]]]);
$blog = null;
$called = false;
$user = new ObjectType(['name' => 'User', 'fields' => function () use(&$blog, &$called) {
$this->assertNotNull($blog, 'Blog type is expected to be defined at this point, but it is null');
$called = true;
return ['id' => ['type' => Type::nonNull(Type::id())], 'blogs' => ['type' => Type::nonNull(Type::listOf(Type::nonNull($blog)))]];
}, 'interfaces' => function () use($node) {
return [$node];
}]);
$blog = new ObjectType(['name' => 'Blog', 'fields' => function () use($user) {
return ['id' => ['type' => Type::nonNull(Type::id())], 'owner' => ['type' => Type::nonNull($user)]];
}, 'interfaces' => function () use($node) {
return [$node];
}]);
$schema = new Schema(new ObjectType(['name' => 'Query', 'fields' => ['node' => ['type' => $node]]]));
$this->assertTrue($called);
$this->assertEquals([$node], $blog->getInterfaces());
$this->assertEquals([$node], $user->getInterfaces());
$this->assertNotNull($user->getField('blogs'));
$this->assertSame($blog, $user->getField('blogs')->getType()->getWrappedType(true));
$this->assertNotNull($blog->getField('owner'));
$this->assertSame($user, $blog->getField('owner')->getType()->getWrappedType(true));
}
