| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * @group general |
| 5 | * @group template |
| 6 | * @ticket 42438 |
| 7 | * @covers ::wp_preload_resources |
| 8 | */ |
| 9 | class Tests_General_wpPreloadLinks extends WP_UnitTestCase { |
| 10 | |
| 11 | /** |
| 12 | * @dataProvider data_preload_resources |
| 13 | * |
| 14 | * @ticket 42438 |
| 15 | */ |
| 16 | public function test_preload_resources( $expected, $preload_resources ) { |
| 17 | $callback = function () use ( $preload_resources ) { |
| 18 | return $preload_resources; |
| 19 | }; |
| 20 | |
| 21 | add_filter( 'wp_preload_resources', $callback, 10 ); |
| 22 | $actual = get_echo( 'wp_preload_resources' ); |
| 23 | remove_filter( 'wp_preload_resources', $callback ); |
| 24 | |
| 25 | $this->assertSame( $expected, $actual ); |
| 26 | } |
| 27 | |
| 28 | /** |
| 29 | * Test provider for all preload link possible combinations. |
| 30 | * |
| 31 | * @return array[] |
| 32 | */ |
| 33 | public function data_preload_resources() { |
| 34 | return array( |
| 35 | 'basic_preload' => array( |
| 36 | 'expected' => "<link rel='preload' href='https://example.com/style.css' as='style' />\n", |
| 37 | 'urls' => array( |
| 38 | array( |
| 39 | 'href' => 'https://example.com/style.css', |
| 40 | 'as' => 'style', |
| 41 | ), |
| 42 | ), |
| 43 | ), |
| 44 | 'multiple_links' => array( |
| 45 | 'expected' => "<link rel='preload' href='https://example.com/style.css' as='style' />\n" . |
| 46 | "<link rel='preload' href='https://example.com/main.js' as='script' />\n", |
| 47 | 'urls' => array( |
| 48 | array( |
| 49 | 'href' => 'https://example.com/style.css', |
| 50 | 'as' => 'style', |
| 51 | ), |
| 52 | array( |
| 53 | 'href' => 'https://example.com/main.js', |
| 54 | 'as' => 'script', |
| 55 | ), |
| 56 | ), |
| 57 | ), |
| 58 | 'MIME_types' => array( |
| 59 | 'expected' => "<link rel='preload' href='https://example.com/style.css' as='style' />\n" . |
| 60 | "<link rel='preload' href='https://example.com/video.mp4' as='video' type='video/mp4' />\n" . |
| 61 | "<link rel='preload' href='https://example.com/main.js' as='script' />\n", |
| 62 | 'urls' => array( |
| 63 | array( |
| 64 | // Should ignore not valid attributes. |
| 65 | 'not' => 'valid', |
| 66 | 'href' => 'https://example.com/style.css', |
| 67 | 'as' => 'style', |
| 68 | ), |
| 69 | array( |
| 70 | 'href' => 'https://example.com/video.mp4', |
| 71 | 'as' => 'video', |
| 72 | 'type' => 'video/mp4', |
| 73 | ), |
| 74 | array( |
| 75 | 'href' => 'https://example.com/main.js', |
| 76 | 'as' => 'script', |
| 77 | ), |
| 78 | ), |
| 79 | ), |
| 80 | 'CORS' => array( |
| 81 | 'expected' => "<link rel='preload' href='https://example.com/style.css' as='style' crossorigin='anonymous' />\n" . |
| 82 | "<link rel='preload' href='https://example.com/video.mp4' as='video' type='video/mp4' />\n" . |
| 83 | "<link rel='preload' href='https://example.com/main.js' as='script' />\n" . |
| 84 | "<link rel='preload' href='https://example.com/font.woff2' as='font' type='font/woff2' crossorigin />\n", |
| 85 | 'urls' => array( |
| 86 | array( |
| 87 | 'href' => 'https://example.com/style.css', |
| 88 | 'as' => 'style', |
| 89 | 'crossorigin' => 'anonymous', |
| 90 | ), |
| 91 | array( |
| 92 | 'href' => 'https://example.com/video.mp4', |
| 93 | 'as' => 'video', |
| 94 | 'type' => 'video/mp4', |
| 95 | ), |
| 96 | array( |
| 97 | 'href' => 'https://example.com/main.js', |
| 98 | 'as' => 'script', |
| 99 | ), |
| 100 | array( |
| 101 | // Should ignore not valid attributes. |
| 102 | 'ignore' => 'ignore', |
| 103 | 'href' => 'https://example.com/font.woff2', |
| 104 | 'as' => 'font', |
| 105 | 'type' => 'font/woff2', |
| 106 | 'crossorigin', |
| 107 | ), |
| 108 | ), |
| 109 | ), |
| 110 | 'media' => array( |
| 111 | 'expected' => "<link rel='preload' href='https://example.com/style.css' as='style' crossorigin='anonymous' />\n" . |
| 112 | "<link rel='preload' href='https://example.com/video.mp4' as='video' type='video/mp4' />\n" . |
| 113 | "<link rel='preload' href='https://example.com/main.js' as='script' />\n" . |
| 114 | "<link rel='preload' href='https://example.com/font.woff2' as='font' type='font/woff2' crossorigin />\n" . |
| 115 | "<link rel='preload' href='https://example.com/image-narrow.png' as='image' media='(max-width: 600px)' />\n" . |
| 116 | "<link rel='preload' href='https://example.com/image-wide.png' as='image' media='(min-width: 601px)' />\n", |
| 117 | 'urls' => array( |
| 118 | array( |
| 119 | 'href' => 'https://example.com/style.css', |
| 120 | 'as' => 'style', |
| 121 | 'crossorigin' => 'anonymous', |
| 122 | ), |
| 123 | array( |
| 124 | 'href' => 'https://example.com/video.mp4', |
| 125 | 'as' => 'video', |
| 126 | 'type' => 'video/mp4', |
| 127 | ), |
| 128 | // Duplicated href should be ignored. |
| 129 | array( |
| 130 | 'href' => 'https://example.com/video.mp4', |
| 131 | 'as' => 'video', |
| 132 | 'type' => 'video/mp4', |
| 133 | ), |
| 134 | array( |
| 135 | 'href' => 'https://example.com/main.js', |
| 136 | 'as' => 'script', |
| 137 | ), |
| 138 | array( |
| 139 | 'href' => 'https://example.com/font.woff2', |
| 140 | 'as' => 'font', |
| 141 | 'type' => 'font/woff2', |
| 142 | 'crossorigin', |
| 143 | ), |
| 144 | array( |
| 145 | 'href' => 'https://example.com/image-narrow.png', |
| 146 | 'as' => 'image', |
| 147 | 'media' => '(max-width: 600px)', |
| 148 | ), |
| 149 | array( |
| 150 | 'href' => 'https://example.com/image-wide.png', |
| 151 | 'as' => 'image', |
| 152 | 'media' => '(min-width: 601px)', |
| 153 | ), |
| 154 | |
| 155 | ), |
| 156 | ), |
| 157 | 'media_extra_attributes' => array( |
| 158 | 'expected' => "<link rel='preload' href='https://example.com/style.css' as='style' crossorigin='anonymous' />\n" . |
| 159 | "<link rel='preload' href='https://example.com/video.mp4' as='video' type='video/mp4' />\n" . |
| 160 | "<link rel='preload' href='https://example.com/main.js' as='script' />\n" . |
| 161 | "<link rel='preload' href='https://example.com/font.woff2' as='font' type='font/woff2' crossorigin />\n" . |
| 162 | "<link rel='preload' href='https://example.com/image-640.png' as='image' imagesrcset='640.png 640w, 800.png 800w, 1024.png 1024w' imagesizes='100vw' />\n" . |
| 163 | "<link rel='preload' as='image' imagesrcset='640.png 640w, 800.png 800w, 1024.png 1024w' imagesizes='100vw' />\n" . |
| 164 | "<link rel='preload' href='https://example.com/image-wide.png' as='image' media='(min-width: 601px)' />\n" . |
| 165 | "<link rel='preload' href='https://example.com/image-800.png' as='image' imagesrcset='640.png 640w, 800.png 800w, 1024.png 1024w' />\n", |
| 166 | 'urls' => array( |
| 167 | array( |
| 168 | 'href' => 'https://example.com/style.css', |
| 169 | 'as' => 'style', |
| 170 | 'crossorigin' => 'anonymous', |
| 171 | ), |
| 172 | array( |
| 173 | 'href' => 'https://example.com/video.mp4', |
| 174 | 'as' => 'video', |
| 175 | 'type' => 'video/mp4', |
| 176 | ), |
| 177 | array( |
| 178 | 'href' => 'https://example.com/main.js', |
| 179 | 'as' => 'script', |
| 180 | ), |
| 181 | array( |
| 182 | 'href' => 'https://example.com/font.woff2', |
| 183 | 'as' => 'font', |
| 184 | 'type' => 'font/woff2', |
| 185 | 'crossorigin', |
| 186 | ), |
| 187 | // imagesrcset only possible when using image, ignore. |
| 188 | array( |
| 189 | 'href' => 'https://example.com/font.woff2', |
| 190 | 'as' => 'font', |
| 191 | 'type' => 'font/woff2', |
| 192 | 'imagesrcset' => '640.png 640w, 800.png 800w, 1024.png 1024w', |
| 193 | ), |
| 194 | // imagesizes only possible when using image, ignore. |
| 195 | array( |
| 196 | 'href' => 'https://example.com/font.woff2', |
| 197 | 'as' => 'font', |
| 198 | 'type' => 'font/woff2', |
| 199 | 'imagesizes' => '100vw', |
| 200 | ), |
| 201 | // Duplicated href should be ignored. |
| 202 | array( |
| 203 | 'href' => 'https://example.com/font.woff2', |
| 204 | 'as' => 'font', |
| 205 | 'type' => 'font/woff2', |
| 206 | 'crossorigin', |
| 207 | ), |
| 208 | array( |
| 209 | 'href' => 'https://example.com/image-640.png', |
| 210 | 'as' => 'image', |
| 211 | 'imagesrcset' => '640.png 640w, 800.png 800w, 1024.png 1024w', |
| 212 | 'imagesizes' => '100vw', |
| 213 | ), |
| 214 | // Omit href so that unsupporting browsers won't request a useless image. |
| 215 | array( |
| 216 | 'as' => 'image', |
| 217 | 'imagesrcset' => '640.png 640w, 800.png 800w, 1024.png 1024w', |
| 218 | 'imagesizes' => '100vw', |
| 219 | ), |
| 220 | // Duplicated imagesrcset should be ignored. |
| 221 | array( |
| 222 | 'as' => 'image', |
| 223 | 'imagesrcset' => '640.png 640w, 800.png 800w, 1024.png 1024w', |
| 224 | 'imagesizes' => '100vw', |
| 225 | ), |
| 226 | array( |
| 227 | 'href' => 'https://example.com/image-wide.png', |
| 228 | 'as' => 'image', |
| 229 | 'media' => '(min-width: 601px)', |
| 230 | ), |
| 231 | // No href but not imagesrcset, should be ignored. |
| 232 | array( |
| 233 | 'as' => 'image', |
| 234 | 'media' => '(min-width: 601px)', |
| 235 | ), |
| 236 | // imagesizes is optional. |
| 237 | array( |
| 238 | 'href' => 'https://example.com/image-800.png', |
| 239 | 'as' => 'image', |
| 240 | 'imagesrcset' => '640.png 640w, 800.png 800w, 1024.png 1024w', |
| 241 | ), |
| 242 | // imagesizes should be ignored since imagesrcset not present. |
| 243 | array( |
| 244 | 'href' => 'https://example.com/image-640.png', |
| 245 | 'as' => 'image', |
| 246 | 'imagesizes' => '100vw', |
| 247 | ), |
| 248 | ), |
| 249 | ), |
| 250 | ); |
| 251 | } |
| 252 | |
| 253 | } |