php-swiftmailerHow to mock SwiftMailer?

Mocking SwiftMailer can be done using a library such as Mockery. Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework.

Example code

$mock = \Mockery::mock('Swift_Mailer');
$mock->shouldReceive('send')
    ->once()
    ->andReturn(true);

Output example

true

Code explanation

• $mock = \Mockery::mock('Swift_Mailer'); - creates a mock object of the Swift_Mailer class
• $mock->shouldReceive('send') - sets up an expectation that the send method will be called
• ->once() - sets the expectation that the send method will be called only once
• ->andReturn(true) - sets the expectation that the send method will return true

Helpful links

• Mockery
• PHPUnit
• PHPSpec

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