Extract bundle testing

README.md

@@ -347,3 +347,11 @@ public $routes = [
 ```
 
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+
+## Testing
+
+This library includes some PHPUnit extension classes in **src/Test/** to assist with testing
+Assets and Bundles. These are used to test the files from this library but are also available
+for your own libraries and projects to use. Simply extend the appropriate test case and add
+a data provider method with your class name and criteria to meet. See the test files in
+**tests/** for examples.

src/Test/BundlesTestCase.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Tatter\Assets\Test;
+
+use CodeIgniter\Publisher\Publisher;
+use Tatter\Assets\Bundle;
+
+abstract class BundlesTestCase extends TestCase
+{
+    private $didPublish = false;
+
+    /**
+     * Publishes all files once so they are
+     * available for bundles.
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        // Make sure everything is published
+        if (! $this->didPublish) {
+            foreach (Publisher::discover() as $publisher) {
+                $publisher->publish(); // @codeCoverageIgnore
+            }
+
+            $this->didPublish = true;
+        }
+    }
+
+    /**
+     * @dataProvider bundleProvider
+     *
+     * @param class-string<Bundle> $class
+     * @param string[]             $expectedHeadFiles
+     * @param string[]             $expectedBodyFiles
+     */
+    public function testBundlesFiles(string $class, array $expectedHeadFiles, array $expectedBodyFiles): void
+    {
+        $bundle = new $class();
+        $head   = $bundle->head();
+        $body   = $bundle->body();
+
+        foreach ($expectedHeadFiles as $file) {
+            $this->assertStringContainsString($file, $head);
+        }
+
+        foreach ($expectedBodyFiles as $file) {
+            $this->assertStringContainsString($file, $body);
+        }
+    }
+
+    /**
+     * Returns an array of items to test with each item
+     * as a triple of [string bundleClassName, string[] headFileNames, string[] bodyFileNames]
+     */
+    abstract public function bundleProvider(): array;
+}

src/Test/TestCase.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Tatter\Assets\Test;
+
+use CodeIgniter\Test\CIUnitTestCase;
+use org\bovigo\vfs\vfsStream;
+use org\bovigo\vfs\vfsStreamDirectory;
+use Tatter\Assets\Asset;
+use Tatter\Assets\Config\Assets as AssetsConfig;
+
+abstract class TestCase extends CIUnitTestCase
+{
+    /**
+     * Virtual workspace
+     *
+     * @var vfsStreamDirectory
+     */
+    protected $root;
+
+    /**
+     * @var AssetsConfig
+     */
+    protected $config;
+
+    /**
+     * Preps the config and VFS.
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->root = vfsStream::setup('root');
+
+        // Create the config
+        $this->config                = config('Assets');
+        $this->config->directory     = $this->root->url() . DIRECTORY_SEPARATOR;
+        $this->config->useTimestamps = false; // These make testing much harder
+
+        Asset::useConfig($this->config);
+
+        // Add VFS as an allowed Publisher directory
+        config('Publisher')->restrictions[$this->config->directory] = '*';
+    }
+
+    protected function tearDown(): void
+    {
+        parent::tearDown();
+
+        $this->root = null; // @phpstan-ignore-line
+        $this->resetServices();
+    }
+}

tests/BundlesTestCaseTest.php

@@ -0,0 +1,36 @@
+<?php
+
+use Tatter\Assets\Test\BundlesTestCase;
+use Tests\Support\Bundles\FruitSalad;
+
+/**
+ * @internal
+ */
+final class BundlesTestCaseTest extends BundlesTestCase
+{
+    /**
+     * Mocks publishing the bundle content.
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        copy(SUPPORTPATH . 'Files/apple.css', $this->config->directory . 'apple.css');
+        copy(SUPPORTPATH . 'Files/banana.js', $this->config->directory . 'banana.js');
+    }
+
+    public function bundleProvider(): array
+    {
+        return [
+            [
+                FruitSalad::class,
+                [
+                    'apple.css',
+                ],
+                [
+                    'banana.js',
+                ],
+            ],
+        ];
+    }
+}

tests/_support/AssetsTestCase.php

@@ -2,29 +2,18 @@
 
 namespace Tests\Support;
 
-use CodeIgniter\Test\CIUnitTestCase;
-use Tatter\Assets\Asset;
-use Tatter\Assets\Config\Assets as AssetsConfig;
+use Tatter\Assets\Test\TestCase;
 
-abstract class AssetsTestCase extends CIUnitTestCase
+abstract class AssetsTestCase extends TestCase
 {
-    /**
-     * @var AssetsConfig
-     */
-    protected $config;
-
     /**
      * Preps the config for the test directory.
      */
     protected function setUp(): void
     {
         parent::setUp();
 
-        $this->config                = config(AssetsConfig::class);
-        $this->config->directory     = SUPPORTPATH . 'Files/';
-        $this->config->vendor        = 'external/';
-        $this->config->useTimestamps = false; // These make testing much harder
-
-        Asset::useConfig($this->config);
+        $this->config->directory = SUPPORTPATH . 'Files/';
+        $this->config->vendor    = 'external/';
     }
 }