class HelpTopicDiscoveryTest

class HelpTopicDiscoveryTest extends UnitTestCase {
    
    /**
     * @covers ::findAll
     */
    public function testDiscoveryExceptionMissingLabel() : void {
        vfsStream::setup('root');
        vfsStream::create([
            'modules' => [
                'test' => [
                    'help_topics' => [
                        // The content of the help topic does not matter.
'test.topic.html.twig' => '',
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'test' => vfsStream::url('root/modules/test/help_topics'),
        ]);
        $this->expectException(DiscoveryException::class);
        $this->expectExceptionMessage("vfs://root/modules/test/help_topics/test.topic.html.twig does not contain the required key with name='label'");
        $discovery->getDefinitions();
    }
    
    /**
     * @covers ::findAll
     */
    public function testDiscoveryExceptionInvalidYamlKey() : void {
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
label: 'A label'
foo: bar
---
EOF;
        vfsStream::create([
            'modules' => [
                'test' => [
                    'help_topics' => [
                        'test.topic.html.twig' => $topic_content,
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'test' => vfsStream::url('root/modules/test/help_topics'),
        ]);
        $this->expectException(DiscoveryException::class);
        $this->expectExceptionMessage("vfs://root/modules/test/help_topics/test.topic.html.twig contains invalid key='foo'");
        $discovery->getDefinitions();
    }
    
    /**
     * @covers ::findAll
     */
    public function testDiscoveryExceptionInvalidTopLevel() : void {
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
label: 'A label'
top_level: bar
---
EOF;
        vfsStream::create([
            'modules' => [
                'test' => [
                    'help_topics' => [
                        'test.topic.html.twig' => $topic_content,
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'test' => vfsStream::url('root/modules/test/help_topics'),
        ]);
        $this->expectException(DiscoveryException::class);
        $this->expectExceptionMessage("vfs://root/modules/test/help_topics/test.topic.html.twig contains invalid value for 'top_level' key, the value must be a Boolean");
        $discovery->getDefinitions();
    }
    
    /**
     * @covers ::findAll
     */
    public function testDiscoveryExceptionInvalidRelated() : void {
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
label: 'A label'
related: "one, two"
---
EOF;
        vfsStream::create([
            'modules' => [
                'test' => [
                    'help_topics' => [
                        'test.topic.html.twig' => $topic_content,
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'test' => vfsStream::url('root/modules/test/help_topics'),
        ]);
        $this->expectException(DiscoveryException::class);
        $this->expectExceptionMessage("vfs://root/modules/test/help_topics/test.topic.html.twig contains invalid value for 'related' key, the value must be an array of strings");
        $discovery->getDefinitions();
    }
    
    /**
     * @covers ::findAll
     */
    public function testHelpTopicsExtensionProviderSpecialCase() : void {
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
label: Test
---
<h2>Test</h2>
EOF;
        vfsStream::create([
            'modules' => [
                'help' => [
                    'help_topics' => [
                        'core.topic.html.twig' => $topic_content,
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'help' => vfsStream::url('root/modules/help/help_topics'),
        ]);
        $this->assertArrayHasKey('core.topic', $discovery->getDefinitions());
    }
    
    /**
     * @covers ::findAll
     */
    public function testHelpTopicsInCore() : void {
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
label: Test
---
<h2>Test</h2>
EOF;
        vfsStream::create([
            'core' => [
                'help_topics' => [
                    'core.topic.html.twig' => $topic_content,
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'core' => vfsStream::url('root/core/help_topics'),
        ]);
        $this->assertArrayHasKey('core.topic', $discovery->getDefinitions());
    }
    
    /**
     * @covers ::findAll
     */
    public function testHelpTopicsBrokenYaml() : void {
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
foo : [bar}
---
<h2>Test</h2>
EOF;
        vfsStream::create([
            'modules' => [
                'help' => [
                    'help_topics' => [
                        'core.topic.html.twig' => $topic_content,
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'help' => vfsStream::url('root/modules/help/help_topics'),
        ]);
        $this->expectException(DiscoveryException::class);
        $this->expectExceptionMessage("Malformed YAML in help topic \"vfs://root/modules/help/help_topics/core.topic.html.twig\":");
        $discovery->getDefinitions();
    }
    
    /**
     * @covers ::findAll
     */
    public function testHelpTopicsDefinition() : void {
        $container = new ContainerBuilder();
        $container->set('string_translation', $this->getStringTranslationStub());
        \Drupal::setContainer($container);
        vfsStream::setup('root');
        $topic_content = <<<EOF
---
label: 'Test'
top_level: true
related:
  - one
  - two
  - three
---
<h2>Test</h2>
EOF;
        vfsStream::create([
            'modules' => [
                'foo' => [
                    'help_topics' => [
                        'foo.topic.html.twig' => $topic_content,
                    ],
                ],
            ],
        ]);
        $discovery = new HelpTopicDiscovery([
            'foo' => vfsStream::url('root/modules/foo/help_topics'),
        ]);
        $definition = $discovery->getDefinitions()['foo.topic'];
        $this->assertEquals('Test', $definition['label']);
        $this->assertInstanceOf(TranslatableMarkup::class, $definition['label']);
        $this->assertTrue($definition['top_level']);
        // Each related plugin ID should be trimmed.
        $this->assertSame([
            'one',
            'two',
            'three',
        ], $definition['related']);
        $this->assertSame('foo', $definition['provider']);
        $this->assertSame(HelpTopicTwig::class, $definition['class']);
        $this->assertSame(vfsStream::url('root/modules/foo/help_topics/foo.topic.html.twig'), $definition['_discovered_file_path']);
        $this->assertSame('foo.topic', $definition['id']);
    }

}