Complex classes like Jetpack_Cxn_Test_Base often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Jetpack_Cxn_Test_Base, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 16 | class Jetpack_Cxn_Test_Base { |
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| 17 | |||
| 18 | /** |
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| 19 | * Tests to run on the Jetpack connection. |
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| 20 | * |
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| 21 | * @var array $tests |
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| 22 | */ |
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| 23 | protected $tests = array(); |
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| 24 | |||
| 25 | /** |
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| 26 | * Results of the Jetpack connection tests. |
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| 27 | * |
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| 28 | * @var array $results |
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| 29 | */ |
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| 30 | protected $results = array(); |
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| 31 | |||
| 32 | /** |
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| 33 | * Status of the testing suite. |
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| 34 | * |
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| 35 | * Used internally to determine if a test should be skipped since the tests are already failing. Assume passing. |
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| 36 | * |
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| 37 | * @var bool $pass |
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| 38 | */ |
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| 39 | protected $pass = true; |
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| 40 | |||
| 41 | /** |
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| 42 | * Jetpack_Cxn_Test constructor. |
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| 43 | */ |
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| 44 | public function __construct() { |
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| 48 | |||
| 49 | /** |
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| 50 | * Adds a new test to the Jetpack Connection Testing suite. |
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| 51 | * |
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| 52 | * @param callable $callable Test to add to queue. |
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| 53 | * @param array $groups Testing groups to add test to. |
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| 54 | * |
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| 55 | * @return bool True if successfully added. False for a failure. |
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| 56 | */ |
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| 57 | public function add_test( $callable, $groups = array( 'default' ) ) { |
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| 68 | |||
| 69 | /** |
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| 70 | * Runs the Jetpack connection suite. |
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| 71 | */ |
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| 72 | public function run_tests() { |
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| 82 | |||
| 83 | /** |
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| 84 | * Returns the full results array. |
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| 85 | * |
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| 86 | * @param string $group Testing group whose results we want. Defaults to "default" group. Use "all" for all tests. |
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| 87 | * @return array Array of test results. |
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| 88 | */ |
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| 89 | public function raw_results( $group = 'default' ) { |
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| 108 | |||
| 109 | /** |
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| 110 | * Returns the status of the connection suite. |
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| 111 | * |
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| 112 | * @param string $group Testing group to check status of. Optional, default all tests. |
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| 113 | * |
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| 114 | * @return true|array True if all tests pass. Array of failed tests. |
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| 115 | */ |
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| 116 | public function pass( $group = 'default' ) { |
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| 129 | |||
| 130 | /** |
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| 131 | * Return array of failed test messages. |
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| 132 | * |
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| 133 | * @param string $group Testing group whose failures we want. Defaults to "default". Use "all" for all tests. |
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| 134 | * |
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| 135 | * @return false|array False if no failed tests. Otherwise, array of failed tests. |
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| 136 | */ |
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| 137 | public function list_fails( $group = 'default' ) { |
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| 149 | |||
| 150 | /** |
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| 151 | * Helper function to return consistent responses for a passing test. |
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| 152 | * |
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| 153 | * @param string $name Test name. |
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| 154 | * |
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| 155 | * @return array Test results. |
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| 156 | */ |
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| 157 | public static function passing_test( $name = 'Unnamed' ) { |
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| 165 | |||
| 166 | /** |
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| 167 | * Helper function to return consistent responses for a skipped test. |
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| 168 | * |
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| 169 | * @param string $name Test name. |
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| 170 | * @param string $message Reason for skipping the test. Optional. |
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| 171 | * |
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| 172 | * @return array Test results. |
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| 173 | */ |
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| 174 | public static function skipped_test( $name = 'Unnamed', $message = false ) { |
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| 182 | |||
| 183 | /** |
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| 184 | * Helper function to return consistent responses for a failing test. |
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| 185 | * |
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| 186 | * @param string $name Test name. |
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| 187 | * @param string $message Message detailing the failure. |
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| 188 | * @param string $resolution Steps to resolve. |
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| 189 | * |
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| 190 | * @return array Test results. |
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| 191 | */ |
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| 192 | public static function failing_test( $name, $message, $resolution = false ) { |
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| 213 | |||
| 214 | /** |
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| 215 | * Provide WP_CLI friendly testing results. |
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| 216 | * |
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| 217 | * @param string $group Testing group whose results we are outputting. Default "default". Use "all" for all tests. |
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| 218 | */ |
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| 219 | public function output_results_for_cli( $group = 'default' ) { |
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| 241 | |||
| 242 | /** |
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| 243 | * Provide single WP Error instance of all failures. |
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| 244 | * |
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| 245 | * @param string $group Testing group whose failures we want converted. Default "default". Use "all" for all tests. |
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| 246 | * |
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| 247 | * @return WP_Error|false WP_Error with all failed tests or false if there were no failures. |
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| 248 | */ |
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| 249 | public function output_fails_as_wp_error( $group = 'default' ) { |
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| 271 | |||
| 272 | /** |
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| 273 | * Encrypt data for sending to WordPress.com. |
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| 274 | * |
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| 275 | * @todo When PHP minimum is 5.3+, add cipher detection to use an agreed better cipher than RC4. RC4 should be the last resort. |
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| 276 | * |
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| 277 | * @param string $data Data to encrypt with the WP.com Public Key. |
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| 278 | * |
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| 279 | * @return false|array False if functionality not available. Array of encrypted data, encryption key. |
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| 280 | */ |
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| 281 | public function encrypt_string_for_wpcom( $data ) { |
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| 302 | } |
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| 303 |
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.