Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
1 | <?php |
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20 | class Test_Atomic_Admin_Menu extends WP_UnitTestCase { |
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21 | |||
22 | /** |
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23 | * Menu data fixture. |
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24 | * |
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25 | * @var array |
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26 | */ |
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27 | public static $menu_data; |
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28 | |||
29 | /** |
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30 | * Submenu data fixture. |
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31 | * |
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32 | * @var array |
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33 | */ |
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34 | public static $submenu_data; |
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35 | |||
36 | /** |
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37 | * Test domain. |
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38 | * |
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39 | * @var string |
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40 | */ |
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41 | public static $domain; |
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42 | |||
43 | /** |
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44 | * Whether this testsuite is run on WP.com. |
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45 | * |
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46 | * @var bool |
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47 | */ |
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48 | public static $is_wpcom; |
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49 | |||
50 | /** |
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51 | * Admin menu instance. |
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52 | * |
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53 | * @var Atomic_Admin_Menu |
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54 | */ |
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55 | public static $admin_menu; |
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56 | |||
57 | /** |
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58 | * Mock user ID. |
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59 | * |
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60 | * @var int |
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61 | */ |
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62 | private static $user_id = 0; |
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63 | |||
64 | /** |
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65 | * Create shared fixtures. |
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66 | * |
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67 | * @param WP_UnitTest_Factory $factory Fixture factory. |
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68 | */ |
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69 | View Code Duplication | public static function wpSetUpBeforeClass( $factory ) { |
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70 | static::$domain = ( new Status() )->get_site_suffix(); |
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71 | static::$user_id = $factory->user->create( array( 'role' => 'administrator' ) ); |
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72 | |||
73 | static::$menu_data = get_menu_fixture(); |
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74 | static::$submenu_data = get_submenu_fixture(); |
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75 | } |
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76 | |||
77 | /** |
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78 | * Set up data. |
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79 | */ |
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80 | View Code Duplication | public function setUp() { |
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81 | parent::setUp(); |
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82 | global $menu, $submenu; |
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83 | |||
84 | // Initialize in setUp so it registers hooks for every test. |
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85 | static::$admin_menu = Atomic_Admin_Menu::get_instance(); |
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86 | |||
87 | $menu = static::$menu_data; |
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88 | $submenu = static::$submenu_data; |
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89 | |||
90 | wp_set_current_user( static::$user_id ); |
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91 | } |
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92 | |||
93 | /** |
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94 | * Test get_instance. |
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95 | * |
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96 | * @covers ::get_instance |
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97 | * @covers ::__construct |
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98 | */ |
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99 | View Code Duplication | public function test_get_instance() { |
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100 | $instance = Atomic_Admin_Menu::get_instance(); |
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101 | |||
102 | $this->assertInstanceOf( Atomic_Admin_Menu::class, $instance ); |
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103 | $this->assertSame( $instance, static::$admin_menu ); |
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104 | |||
105 | $this->assertSame( 99999, has_action( 'admin_menu', array( $instance, 'reregister_menu_items' ) ) ); |
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106 | $this->assertSame( 10, has_action( 'admin_enqueue_scripts', array( $instance, 'enqueue_scripts' ) ) ); |
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107 | } |
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108 | |||
109 | /** |
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110 | * Tests add_browse_sites_link. |
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111 | * |
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112 | * @covers ::add_browse_sites_link |
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113 | */ |
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114 | public function test_add_browse_sites_link() { |
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115 | global $menu; |
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116 | |||
117 | // No output when executed in single site mode. |
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118 | static::$admin_menu->add_browse_sites_link(); |
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119 | $this->assertArrayNotHasKey( 0, $menu ); |
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120 | } |
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121 | |||
122 | /** |
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123 | * Tests add_browse_sites_link. |
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124 | * |
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125 | * @covers ::add_browse_sites_link |
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126 | */ |
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127 | public function test_add_browse_sites_link_multisite() { |
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128 | if ( ! is_multisite() ) { |
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129 | $this->markTestSkipped( 'Only used on multisite' ); |
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130 | } |
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131 | |||
132 | global $menu; |
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133 | |||
134 | // No output when user has just one site. |
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135 | static::$admin_menu->add_browse_sites_link(); |
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136 | $this->assertArrayNotHasKey( 0, $menu ); |
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137 | |||
138 | // Give user a second site. |
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139 | set_transient( 'jetpack_connected_user_data_' . static::$user_id, array( 'site_count' => 2 ) ); |
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140 | |||
141 | static::$admin_menu->add_browse_sites_link(); |
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142 | |||
143 | $browse_sites_menu_item = array( |
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144 | 'Browse sites', |
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145 | 'read', |
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146 | 'https://wordpress.com/home', |
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147 | 'site-switcher', |
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148 | 'menu-top toplevel_page_https://wordpress.com/home', |
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149 | 'toplevel_page_https://wordpress.com/home', |
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150 | 'dashicons-arrow-left-alt2', |
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151 | ); |
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152 | $this->assertSame( $menu[0], $browse_sites_menu_item ); |
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153 | |||
154 | delete_transient( 'jetpack_connected_user_data_' . static::$user_id ); |
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155 | } |
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156 | |||
157 | /** |
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158 | * Tests add_new_site_link. |
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159 | * |
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160 | * @covers ::add_new_site_link |
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161 | */ |
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162 | public function test_add_new_site_link() { |
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163 | global $menu; |
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164 | |||
165 | // Set jetpack user data. |
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166 | set_transient( 'jetpack_connected_user_data_' . static::$user_id, array( 'site_count' => 1 ) ); |
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167 | |||
168 | static::$admin_menu->add_new_site_link(); |
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169 | |||
170 | $new_site_menu_item = array( |
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171 | 'Add new site', |
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172 | 'read', |
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173 | 'https://wordpress.com/start?ref=calypso-sidebar', |
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174 | 'Add new site', |
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175 | 'menu-top toplevel_page_https://wordpress.com/start?ref=calypso-sidebar', |
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176 | 'toplevel_page_https://wordpress.com/start?ref=calypso-sidebar', |
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177 | 'dashicons-plus-alt', |
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178 | ); |
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179 | $this->assertSame( $menu[1002], $new_site_menu_item ); // 1001 is the separator position, 1002 is the link position |
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180 | |||
181 | delete_transient( 'jetpack_connected_user_data_' . static::$user_id ); |
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182 | } |
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183 | |||
184 | /** |
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185 | * Tests add_site_card_menu |
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186 | * |
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187 | * @covers ::add_site_card_menu |
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188 | */ |
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189 | public function test_add_site_card_menu() { |
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190 | global $menu; |
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191 | |||
192 | if ( ! function_exists( 'site_is_private' ) ) { |
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193 | function site_is_private() { // phpcs:ignore |
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196 | } |
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197 | static::$admin_menu->add_site_card_menu(); |
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198 | |||
199 | $home_url = home_url(); |
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200 | $site_card_menu_item = array( |
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201 | // phpcs:ignore Squiz.Strings.DoubleQuoteUsage.NotRequired |
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202 | ' |
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216 | |||
217 | /** |
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218 | * Tests set_site_card_menu_class |
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219 | * |
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220 | * @covers ::set_site_card_menu_class |
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221 | */ |
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222 | public function test_set_site_card_menu_class() { |
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248 | |||
249 | /** |
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250 | * Shim wpcomsh fallback site icon. |
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251 | * |
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252 | * @return string |
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253 | */ |
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254 | public function wpcomsh_site_icon_url() { |
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257 | |||
258 | /** |
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259 | * Custom site icon. |
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260 | * |
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261 | * @return string |
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262 | */ |
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263 | public function custom_site_icon_url() { |
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266 | |||
267 | /** |
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268 | * Tests add_upgrades_menu |
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269 | * |
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270 | * @covers ::add_upgrades_menu |
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271 | */ |
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272 | View Code Duplication | public function test_add_wpcom_upgrades_menu() { |
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314 | |||
315 | /** |
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316 | * Tests jetpack_parent_file |
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317 | * |
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318 | * @covers ::jetpack_parent_file |
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319 | */ |
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320 | View Code Duplication | public function test_jetpack_parent_file() { |
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329 | |||
330 | /** |
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331 | * Tests add_users_menu |
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332 | * |
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333 | * @covers ::add_users_menu |
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334 | */ |
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335 | View Code Duplication | public function test_add_users_menu() { |
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398 | |||
399 | /** |
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400 | * Tests add_tools_menu |
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401 | * |
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402 | * @covers ::add_tools_menu |
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403 | */ |
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404 | View Code Duplication | public function test_add_tools_menu() { |
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480 | |||
481 | /** |
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482 | * Tests add_options_menu |
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483 | * |
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484 | * @covers ::add_options_menu |
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485 | */ |
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486 | View Code Duplication | public function test_add_options_menu() { |
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496 | } |
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497 |
Let’s assume you have a class which uses late-static binding:
The code above will run fine in your PHP runtime. However, if you now create a sub-class and call the
getSomeVariable()
on that sub-class, you will receive a runtime error:In the case above, it makes sense to update
SomeClass
to useself
instead: