class SvgExtractorTest

class SvgExtractorTest extends UnitTestCase {
    use IconTestTrait;
    
    /**
     * This test plugin id (icon pack id).
     */
    private string $pluginId = 'test_svg';
    
    /**
     * The SvgExtractor instance.
     *
     * @var \Drupal\Core\Theme\Plugin\IconExtractor\SvgExtractor
     */
    private SvgExtractor $svgExtractorPlugin;
    
    /**
     * The IconFinder instance.
     *
     * @var \Drupal\Core\Theme\Icon\IconFinder|\PHPUnit\Framework\MockObject\MockObject
     */
    private IconFinder $iconFinder;
    
    /**
     * {@inheritdoc}
     */
    public function setUp() : void {
        parent::setUp();
        $this->iconFinder = $this->createMock(IconFinder::class);
        $this->svgExtractorPlugin = new SvgExtractor([
            'id' => $this->pluginId,
            'config' => [
                'sources' => [
                    'foo/bar/{icon_id}.svg',
                ],
            ],
            'template' => '_foo_',
            'relative_path' => 'modules/my_module',
        ], $this->pluginId, [], $this->iconFinder);
    }
    
    /**
     * Data provider for ::testDiscoverIconsSvg().
     *
     * @return \Generator
     *   The test cases, icons files returned by IconFinder::getFilesFromSources.
     */
    public static function providerDiscoverIconsSvg() {
        (yield 'empty files' => [
            [],
            TRUE,
        ]);
        (yield 'svg file' => [
            [
                'foo' => [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                    'group' => NULL,
                ],
            ],
        ]);
        (yield 'multiple files' => [
            [
                'foo' => [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                    'group' => NULL,
                ],
                'bar' => [
                    'icon_id' => 'bar',
                    'source' => 'source/bar.svg',
                    'absolute_path' => '/path/source/bar.svg',
                    'group' => 'corge',
                ],
                'baz' => [
                    'icon_id' => 'baz',
                    'source' => 'source/baz.svg',
                    'absolute_path' => '/path/source/baz.svg',
                    'group' => NULL,
                ],
            ],
        ]);
    }
    
    /**
     * Test the SvgExtractor::discoverIcons() method.
     *
     * @param array<array<string, string>> $files
     *   The files to test from IconFinder::getFilesFromSources.
     * @param bool $expected_empty
     *   Has icon result, default FALSE.
     *
     * @dataProvider providerDiscoverIconsSvg
     */
    public function testDiscoverIconsSvg(array $files, bool $expected_empty = FALSE) : void {
        $this->iconFinder
            ->method('getFilesFromSources')
            ->willReturn($files);
        $result = $this->svgExtractorPlugin
            ->discoverIcons();
        if (TRUE === $expected_empty) {
            $this->assertEmpty($result);
            return;
        }
        $expected_result = [];
        foreach ($files as $icon) {
            $expected_id = $this->pluginId . IconDefinition::ICON_SEPARATOR . $icon['icon_id'];
            $expected_result[$expected_id] = [
                'source' => $icon['source'],
                'absolute_path' => $icon['absolute_path'],
                'group' => $icon['group'],
            ];
        }
        $this->assertEquals($expected_result, $result);
    }
    
    /**
     * Test the SvgExtractor::discoverIcons() method with remote svg.
     */
    public function testDiscoverIconsRemoteIgnored() : void {
        $svgExtractorPlugin = new SvgExtractor([
            'id' => $this->pluginId,
            'config' => [
                'sources' => [
                    'http://foo/bar.svg',
                    'https://foo/bar.svg',
                    'https://your-bucket-name.s3.amazonaws.com/foo/bar.svg',
                ],
            ],
            'template' => '_foo_',
            'relative_path' => 'modules/my_module',
        ], $this->pluginId, [], $this->iconFinder);
        $icons = $svgExtractorPlugin->discoverIcons();
        $this->assertEmpty($icons);
    }
    
    /**
     * Data provider for ::testLoadIconSvg().
     *
     * @return \Generator
     *   The test cases, icons data returned by SvgExtractor::discoverIcons.
     */
    public static function providerLoadIconSvg() {
        (yield 'svg file empty' => [
            [
                [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                ],
            ],
            [
                '',
            ],
        ]);
        (yield 'svg file' => [
            [
                [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                ],
            ],
            [
                '<svg xmlns="https://www.w3.org/2000/svg"><g><path d="M8 15a.5.5 0 0 0"/></g></svg>',
            ],
            [
                '<g><path d="M8 15a.5.5 0 0 0"/></g>',
            ],
        ]);
        (yield 'svg file with group' => [
            [
                [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                    'group' => 'bar',
                ],
            ],
            [
                '<svg xmlns="https://www.w3.org/2000/svg"><g><path d="M8 15a.5.5 0 0 0"/></g></svg>',
            ],
            [
                '<g><path d="M8 15a.5.5 0 0 0"/></g>',
            ],
        ]);
        (yield 'svg file with attributes' => [
            [
                [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                ],
            ],
            [
                '<svg xmlns="https://www.w3.org/2000/svg" data-foo="bar" data-baz="foo"><g><path d="M8 15a.5.5 0 0 0"/></g></svg>',
            ],
            [
                '<g><path d="M8 15a.5.5 0 0 0"/></g>',
            ],
            [
                [
                    'data-foo' => 'bar',
                    'data-baz' => 'foo',
                ],
            ],
        ]);
        (yield 'svg sprite is ignored' => [
            [
                [
                    'icon_id' => 'foo',
                    'source' => 'source/foo.svg',
                    'absolute_path' => '/path/source/foo.svg',
                ],
            ],
            [
                '<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><symbol id="foo"><g><path d="M8 15a.5.5 0 0 0"/></g></symbol>/svg>',
            ],
            [
                '',
            ],
        ]);
    }
    
    /**
     * Test the SvgExtractor::loadIcon() method.
     *
     * @param array<array<string, string>> $icons_extracted
     *   The icons data to test.
     * @param array<string> $file_content
     *   The content returned by IconFinder:getFileContents.
     * @param array<string> $expected_content
     *   The icons expected content.
     * @param array<string, string> $expected_attributes
     *   The attributes expected.
     *
     * @dataProvider providerLoadIconSvg
     */
    public function testLoadIconSvg(array $icons_extracted = [], array $file_content = [], array $expected_content = [], ?array $expected_attributes = NULL) : void {
        foreach ($icons_extracted as $index => $icon) {
            $this->iconFinder
                ->method('getFileContents')
                ->with($icon['absolute_path'])
                ->willReturn($file_content[$index]);
            $icon_loaded = $this->svgExtractorPlugin
                ->loadIcon($icon);
            // Empty or ignored file test.
            if (empty($expected_content[$index])) {
                $this->assertNull($icon_loaded);
                continue;
            }
            $this->assertInstanceOf(IconDefinitionInterface::class, $icon_loaded);
            $data_loaded = $icon_loaded->getAllData();
            $expected_content[$index] = new FormattableMarkup($expected_content[$index], []);
            $this->assertEquals($expected_content[$index], $data_loaded['content']);
            $expected_attributes[$index] = new Attribute($expected_attributes[$index] ?? []);
            $this->assertEquals($expected_attributes[$index], $data_loaded['attributes']);
            $expected_id = $this->pluginId . IconDefinition::ICON_SEPARATOR . $icon['icon_id'];
            $this->assertSame($expected_id, $icon_loaded->getId());
            // Basic data are not altered and can be compared directly.
            $this->assertSame($icon['icon_id'], $icon_loaded->getIconId());
            $this->assertSame($icon['source'], $icon_loaded->getSource());
            $this->assertSame($icon['group'] ?? NULL, $icon_loaded->getGroup());
        }
    }
    
    /**
     * Test the SvgExtractor::loadIcon() method with invalid svg.
     */
    public function testLoadIconSvgInvalid() : void {
        $icon = [
            'icon_id' => 'foo',
            'source' => '/path/source/foo.svg',
        ];
        $this->iconFinder
            ->method('getFileContents')
            ->with($icon['source'])
            ->willReturn('Not valid svg');
        $icon_loaded = $this->svgExtractorPlugin
            ->loadIcon($icon);
        $this->assertNull($icon_loaded);
        foreach (libxml_get_errors() as $error) {
            $this->assertSame("Start tag expected, '<' not found", trim($error->message));
        }
    }

}