Unit test helpers for Facebook projects
FBExpect is a standalone unit testing utility based on the notion of assertions from PHPUnit. Starting with
2.x, FBExpect no longer uses PHPUnit as a
dependency, and instead implements the assertions directly, and is intentended
for use with HackTest.
It is linguistically clear which value is the expected value and which is the actual value:
use function Facebook\FBExpect\expect; // PHPUnit $this->assertSame($a, $b); // FBExpect expect($b)->toBeSame($a);
use function Facebook\FBExpect\expect; // PHPUnit $this->assertNotNull($x); // Actual test assert($x !== null); // Tell the typechecker what's going on $this->assertInstanceOf(Foo::class, $y); assert($y instanceof Foo); // FBExpect $x = expect($x)->toNotBeNull(); $y = expect($y)->toBeInstanceOf(Foo::class);
FBExpect is installed via composer:
composer require facebook/fbexpect
Composer must be executed with
php, not HHVM.
FBExpect is MIT-licensed.