An easier way to use PHPUnit with CodeIgniter 3.x.

• You don't have to modify CodeIgniter core files at all.
• You can write controller tests easily.
• Nothing is untestable, maybe.
• Well documented.

• PHP 5.4.0 or later (5.6 or later is recommended)
• CodeIgniter 3.x
• PHPUnit 4.3 to 7.5 (4.8 or later is recommended)
  • If you want to use PHPUnit 8 or later, please use ci-phpunit-test 2.x.
  • If you use PHPUnit 6.0, please use ci-phpunit-test v0.14.0 or later.
  • You can download old version of phpunit.phar from https://phar.phpunit.de/.

• NetBeans
  • Go to Project Properties > Testing > PHPUnit, check Use Custom Test Suite checkbox, and select application/tests/_ci_phpunit_test/TestSuiteProvider.php.

See Change Log.

codeigniter/
├── application/
│   └── tests/
│        ├── _ci_phpunit_test/ ... don't touch! files ci-phpunit-test uses
│        ├── Bootstrap.php     ... bootstrap file for PHPUnit
│        ├── DbTestCase.php    ... DbTestCase class
│        ├── TestCase.php      ... TestCase class
│        ├── controllers/      ... put your controller tests
│        ├── libraries/        ... put your library tests
│        ├── mocks/
│        │   └── libraries/    ... mock libraries
│        ├── models/           ... put your model tests
│        └── phpunit.xml       ... config file for PHPUnit
└── vendor/

1. Download latest ci-phpunit-test from https://github.com/kenjis/ci-phpunit-test/releases.
2. Unzip and copy application/tests folder into your application folder in CodeIgniter project.

That's it.

If you like Composer:

$ cd /path/to/codeigniter/
$ composer require kenjis/ci-phpunit-test --dev

And run install.php:

$ php vendor/kenjis/ci-phpunit-test/install.php --from-composer

• The above command always overwrites existing files.
• You must run it at CodeIgniter project root folder.
• Please remove the line <exclude>./_ci_phpunit_test/</exclude> in tests/phpunit.xml.
• You can specify your application and public folder with option arguments, if you use custom folder paths.

$ php vendor/kenjis/ci-phpunit-test/install.php -a <application_dir> -p <public_dir>

• But some paths may be not correct, in that case, please fix them in tests/Bootstrap.php.

1. Download latest ci-phpunit-test from https://github.com/kenjis/ci-phpunit-test/releases.
2. Unzip and replace application/tests/_ci_phpunit_test folder.
3. Read Change Log.

If you like Composer:

$ cd /path/to/codeigniter/
$ composer update kenjis/ci-phpunit-test

If you're upgrading from a previous version of ci-phpunit-test that created an application/test/_ci_phpunit_test directory and now want to directly use ci-phpunit-test from Composer, you have a couple of additional steps:

1. Delete the old test library directory: rm -rf /path/to/codeigniter/application/tests/_ci_phpunit_test
2. Edit the application/tests/Bootstrap.php file. At the bottom of the "set the main path constants" section, add the following:

   define('CI_PHPUNIT_TESTPATH', implode(
       DIRECTORY_SEPARATOR,
       [dirname(APPPATH), 'vendor', 'kenjis', 'ci-phpunit-test', 'application', 'tests', '_ci_phpunit_test']
   ).DIRECTORY_SEPARATOR);
   

   And replace any references to __DIR__ . '/_ci_phpunit_test/ or TESTPATH . '_ci_phpunit_test with CI_PHPUNIT_TESTPATH . '. (So, for example, __DIR__ . '/_ci_phpunit_test/CIPHPUnitTest.php' would become CI_PHPUNIT_TESTPATH . '/CIPHPUnitTest.php'.)

Read Change Log.

You have to install PHPUnit before running tests.

Note: You must run phpunit command in application/tests folder.

$ cd /path/to/codeigniter/
$ cd application/tests/
$ phpunit
PHPUnit 4.8.31 by Sebastian Bergmann and contributors.

...

Time: 341 ms, Memory: 5.50Mb

OK (3 tests, 3 assertions)

Generating code coverage report in Clover XML format ... done

Generating code coverage report in HTML format ... done

To generate coverage report, Xdebug is needed.

If you want to run a single test case file:

$ phpunit models/Category_model_test.php

As an example, a test case class for Inventory_model would be as follows:

<?php

class Inventory_model_test extends TestCase
{
    public function setUp()
    {
        $this->resetInstance();
        $this->CI->load->model('Inventory_model');
        $this->obj = $this->CI->Inventory_model;
    }

    public function test_get_category_list()
    {
        $expected = [
            1 => 'Book',
            2 => 'CD',
            3 => 'DVD',
        ];
        $list = $this->obj->get_category_list();
        foreach ($list as $category) {
            $this->assertEquals($expected[$category->id], $category->name);
        }
    }

    public function test_get_category_name()
    {
        $actual = $this->obj->get_category_name(1);
        $expected = 'Book';
        $this->assertEquals($expected, $actual);
    }
}

As an example, a test case class for Welcome controller would be as follows:

<?php

class Welcome_test extends TestCase
{
    public function test_index()
    {
        $output = $this->request('GET', 'welcome/index');
        $this->assertContains(
            '<title>Welcome to CodeIgniter</title>', $output
        );
    }
}

See How to Write Tests for details.

See Function and Class Reference.

See Tips.

• CodeIgniter Composer Installer
• Cli for CodeIgniter 3.0
• CodeIgniter Simple and Secure Twig
• CodeIgniter Doctrine
• CodeIgniter Deployer
• CodeIgniter3 Filename Checker
• CodeIgniter Widget (View Partial) Sample
• CodeIgniter3 Namespaced Controller