common used functions in testing cakephp 3x

Command line

  ./vendor/bin/phpunit tests/TestCase/Model/Table/UsersTableTest

vendor/bin/phpunit   tests/TestCase/Controller/SettingsControllerTest.php

vendor/bin/phpunit   tests/TestCase/Controller/UsersControllerTest.php --coverage-html webroot/coverage  --whitelist src/Controller/UsersController.php

Assert methods in Controller

// Check for a 2xx response code
$this->assertResponseOk();

// Check for a 2xx/3xx response code
$this->assertResponseSuccess();

// Check for a 4xx response code
$this->assertResponseError();

// Check for a 5xx response code
$this->assertResponseFailure();

// Check for a specific response code, e.g. 200
$this->assertResponseCode(200);

// Check the Location header
$this->assertRedirect(['controller' => 'Articles', 'action' => 'index']);

// Check that no Location header has been set
$this->assertNoRedirect();

// Check a part of the Location header
$this->assertRedirectContains('/articles/edit/');

// Assert not empty response content
$this->assertResponseNotEmpty();

// Assert empty response content
$this->assertResponseEmpty();

// Assert response content
$this->assertResponseEquals('Yeah!');

// Assert partial response content
$this->assertResponseContains('You won!');
$this->assertResponseNotContains('You lost!');

// Assert layout
$this->assertLayout('default');

// Assert which template was rendered (if any)
$this->assertTemplate('index');

// Assert data in the session
$this->assertSession(1, 'Auth.User.id');

// Assert response header.
$this->assertHeader('Content-Type', 'application/json');

// Assert view variables
$this->assertEquals('jose', $this->viewVariable('user.username'));

// Assert cookies in the response
$this->assertCookie('1', 'thingid');

// Check the content type
$this->assertContentType('application/json');