docs: improve testing/overview.rst

user_guide_src/source/testing/overview.rst

@@ -60,24 +60,31 @@ Testing Your Application
 PHPUnit Configuration
 =====================
 
-The framework has a ``phpunit.xml.dist`` file in the project root. This controls unit
-testing of the framework itself. If you provide your own ``phpunit.xml``, it will
-over-ride this.
+In your CodeIgniter project root, there is the ``phpunit.xml.dist`` file. This
+controls unit testing of your application. If you provide your own ``phpunit.xml``,
+it will over-ride this.
 
-Your ``phpunit.xml`` should exclude the ``system`` folder, as well as any ``vendor`` or
-``ThirdParty`` folders, if you are unit testing your application.
+By default, test files are placed under the **tests** directory in the project root.
 
 The Test Class
 ==============
 
-In order to take advantage of the additional tools provided, your tests must extend ``CIUnitTestCase``. All tests
-are expected to be located in the **tests/app** directory by default.
+In order to take advantage of the additional tools provided, your tests must extend
+``CodeIgniter\Test\CIUnitTestCase``.
 
-To test a new library, **Foo**, you would create a new file at **tests/app/Libraries/FooTest.php**:
+There are no rules for how test files must be placed. However, we recommend that
+you establish placement rules in advance so that you can quickly understand where
+the test files are located.
+
+In this document, we will place the test files corresponding to the classes in
+the **app** directory in the **tests/app** directory. To test a new library,
+**app/Libraries/Foo.php**, you would create a new file at
+**tests/app/Libraries/FooTest.php**:
 
 .. literalinclude:: overview/001.php
 
-To test one of your models, you might end up with something like this in **tests/app/Models/OneOfMyModelsTest.php**:
+To test one of your models, **app/Models/UserMode.php**, you might end up with
+something like this in **tests/app/Models/UserModelTest.php**:
 
 .. literalinclude:: overview/002.php
 
@@ -104,7 +111,7 @@ to help with staging and clean up::
 The static methods ``setUpBeforeClass()`` and ``tearDownAfterClass()`` run before and after the entire test case, whereas the protected methods ``setUp()`` and ``tearDown()`` run
 between each test.
 
-If you implement any of these special functions make sure you run their
+If you implement any of these special functions, make sure you run their
 parent as well so extended test cases do not interfere with staging:
 
 .. literalinclude:: overview/003.php

user_guide_src/source/testing/overview/002.php

@@ -4,7 +4,7 @@
 
 use CodeIgniter\Test\CIUnitTestCase;
 
-class OneOfMyModelsTest extends CIUnitTestCase
+class UserModelTest extends CIUnitTestCase
 {
     public function testFooNotBar()
     {

user_guide_src/source/testing/overview/003.php

@@ -4,7 +4,7 @@
 
 use CodeIgniter\Test\CIUnitTestCase;
 
-final class OneOfMyModelsTest extends CIUnitTestCase
+final class UserModelTest extends CIUnitTestCase
 {
     protected function setUp(): void
     {

user_guide_src/source/testing/overview/016.php

@@ -1,14 +1,17 @@
 <?php
 
+namespace Tests;
+
+use CodeIgniter\HTTP\CURLRequest;
 use CodeIgniter\Test\CIUnitTestCase;
 use Config\Services;
 
 final class SomeTest extends CIUnitTestCase
 {
     public function testSomething()
     {
-        $curlrequest = $this->getMockBuilder('CodeIgniter\HTTP\CURLRequest')
-            ->setMethods(['request'])
+        $curlrequest = $this->getMockBuilder(CURLRequest::class)
+            ->onlyMethods(['request'])
             ->getMock();
         Services::injectMock('curlrequest', $curlrequest);
 

user_guide_src/source/testing/overview/017.php

@@ -2,6 +2,7 @@
 
 namespace Tests;
 
+use App\Models\UserModel;
 use CodeIgniter\Config\Factories;
 use CodeIgniter\Test\CIUnitTestCase;
 use Tests\Support\Mock\MockUserModel;
@@ -13,6 +14,6 @@ protected function setUp(): void
         parent::setUp();
 
         $model = new MockUserModel();
-        Factories::injectMock('models', 'App\Models\UserModel', $model);
+        Factories::injectMock('models', UserModel::class, $model);
     }
 }

user_guide_src/source/testing/overview/018.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests;
+
 use CodeIgniter\CLI\CLI;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\StreamFilterTrait;

user_guide_src/source/testing/overview/019.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests;
+
 use CodeIgniter\CLI\CLI;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\PhpStreamWrapper;

user_guide_src/source/testing/overview/020.php

@@ -1,5 +1,7 @@
 <?php
 
+namespace Tests;
+
 use CodeIgniter\CLI\CLI;
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\Filters\CITestStreamFilter;