How do I assert the result is an integer in PHPUnit?

php unit-testing phpunit

$this->assertInternalType("int", $id);

Edit: As of PHPUnit 8, the answer is:

$this->assertIsInt($id);

php unit-testing phpunit

I prefer using the official PHPUnit class constants.

PHPUnit v5.2:

use PHPUnit_Framework_Constraint_IsType as PHPUnit_IsType;// ...$this->assertInternalType(PHPUnit_IsType::TYPE_INT, $new_id);

Or latest which at the moment of writing is v7.0:

use PHPUnit\Framework\Constraint\IsType;// ...$this->assertInternalType(IsType::TYPE_INT, $new_id);

php unit-testing phpunit

Original answer is given below for posterity, but I would strongly recommend using assertInternalType() as suggested in other answers.

Original answer:

Simply use assertTrue with is_int().

$this->assertTrue(is_int($new_id));

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