Assert PHPUnit that an object has an integer attribute

Question

I'm using PHPUnit and I have to check a json_decode result. I have an object containing an integer attribute as you can see in the debugger view :

When I do this :

$this->assertObjectHasAttribute('1507',$object);

I get an error :

PHPUnit_Framework_Assert::assertObjectHasAttribute() must be a valid attribute name

My $object is an instance of stdClass

Answer 1

A numeric property is abnormal, and PHPUnit won't accept it as a valid attribute name:

private static function isAttributeName(string $string) : bool
{
    return preg_match('/[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*/', $string) === 1;
}

Therefore the best thing to do is not test if the object has an attribute, but rather check if an array has a key.

json_decode returns an object OR an array

As described in the docs:

mixed json_decode ( string $json [, bool $assoc = false [, int $depth = 512 [, int $options = 0 ]]] )

...

assoc

• When TRUE, returned objects will be converted into associative arrays.

An appropriate test method is therefore:

function testSomething() {
    $jsonString = '...';
    $array = json_decode($jsonString, true);
    $this->assertArrayHasKey('1507',$array);
}

Answer 2

assertObjectHasAttribute checks that the given object has an attribute of the given name, not its value. So, in your case:

$this->assertObjectHasAttribute('ID',$object);

If you want to check its value, you could just use assertEquals:

$this->assertEquals(1509, $object->ID);