silverstripe /
silverstripe-behat-extension
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:
Complex classes like FixtureContext 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 FixtureContext, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 23 | class FixtureContext extends BehatContext |
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| 24 | { |
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| 25 | protected $context; |
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| 26 | |||
| 27 | /** |
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| 28 | * @var \FixtureFactory |
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| 29 | */ |
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| 30 | protected $fixtureFactory; |
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| 31 | |||
| 32 | /** |
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| 33 | * @var String Absolute path where file fixtures are located. |
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| 34 | * These will automatically get copied to their location |
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| 35 | * declare through the 'Given a file "..."' step defition. |
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| 36 | */ |
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| 37 | protected $filesPath; |
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| 38 | |||
| 39 | /** |
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| 40 | * @var String Tracks all files and folders created from fixtures, for later cleanup. |
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| 41 | */ |
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| 42 | protected $createdFilesPaths = array(); |
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| 43 | |||
| 44 | /** |
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| 45 | * @var array Stores the asset tuples. |
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| 46 | */ |
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| 47 | protected $createdAssets = array(); |
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| 48 | |||
| 49 | public function __construct(array $parameters) { |
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| 50 | $this->context = $parameters; |
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| 51 | } |
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| 52 | |||
| 53 | public function getSession($name = null) { |
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| 54 | return $this->getMainContext()->getSession($name); |
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| 55 | } |
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| 56 | |||
| 57 | /** |
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| 58 | * @return \FixtureFactory |
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| 59 | */ |
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| 60 | public function getFixtureFactory() { |
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| 61 | if(!$this->fixtureFactory) { |
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| 62 | $this->fixtureFactory = \Injector::inst()->create('FixtureFactory', 'FixtureContextFactory'); |
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| 63 | } |
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| 64 | return $this->fixtureFactory; |
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| 65 | } |
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| 66 | |||
| 67 | /** |
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| 68 | * @param \FixtureFactory $factory |
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| 69 | */ |
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| 70 | public function setFixtureFactory(\FixtureFactory $factory) { |
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| 71 | $this->fixtureFactory = $factory; |
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| 72 | } |
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| 73 | |||
| 74 | /** |
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| 75 | * @param String |
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| 76 | */ |
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| 77 | public function setFilesPath($path) { |
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| 78 | $this->filesPath = $path; |
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| 79 | } |
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| 80 | |||
| 81 | /** |
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| 82 | * @return String |
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| 83 | */ |
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| 84 | public function getFilesPath() { |
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| 85 | return $this->filesPath; |
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| 86 | } |
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| 87 | |||
| 88 | /** |
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| 89 | * @BeforeScenario @database-defaults |
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| 90 | */ |
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| 91 | public function beforeDatabaseDefaults(ScenarioEvent $event) { |
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| 92 | \SapphireTest::empty_temp_db(); |
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| 93 | DB::get_conn()->quiet(); |
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| 94 | $dataClasses = \ClassInfo::subclassesFor('SilverStripe\\ORM\\DataObject'); |
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| 95 | array_shift($dataClasses); |
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| 96 | foreach ($dataClasses as $dataClass) { |
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| 97 | \singleton($dataClass)->requireDefaultRecords(); |
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| 98 | } |
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| 99 | } |
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| 100 | |||
| 101 | /** |
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| 102 | * @AfterScenario |
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| 103 | */ |
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| 104 | public function afterResetDatabase(ScenarioEvent $event) { |
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| 105 | \SapphireTest::empty_temp_db(); |
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| 106 | } |
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| 107 | |||
| 108 | /** |
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| 109 | * @AfterScenario |
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| 110 | */ |
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| 111 | public function afterResetAssets(ScenarioEvent $event) { |
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| 112 | $store = $this->getAssetStore(); |
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| 113 | if (is_array($this->createdAssets)) { |
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| 114 | foreach ($this->createdAssets as $asset) { |
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| 115 | $store->delete($asset['FileFilename'], $asset['FileHash']); |
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| 116 | } |
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| 117 | } |
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| 118 | } |
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| 119 | |||
| 120 | /** |
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| 121 | * Example: Given a "page" "Page 1" |
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| 122 | * |
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| 123 | * @Given /^(?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)"$/ |
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| 124 | */ |
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| 125 | public function stepCreateRecord($type, $id) { |
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| 126 | $class = $this->convertTypeToClass($type); |
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| 127 | $fields = $this->prepareFixture($class, $id); |
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| 128 | $this->fixtureFactory->createObject($class, $id, $fields); |
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| 129 | } |
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| 130 | |||
| 131 | /** |
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| 132 | * Example: Given a "page" "Page 1" has the "content" "My content" |
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| 133 | * |
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| 134 | * @Given /^(?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)" has (?:(an|a|the) )"(?<field>.*)" "(?<value>.*)"$/ |
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| 135 | */ |
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| 136 | public function stepCreateRecordHasField($type, $id, $field, $value) { |
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| 137 | $class = $this->convertTypeToClass($type); |
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| 138 | $fields = $this->convertFields( |
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| 139 | $class, |
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| 140 | array($field => $value) |
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| 141 | ); |
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| 142 | // We should check if this fixture object already exists - if it does, we update it. If not, we create it |
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| 143 | View Code Duplication | if($existingFixture = $this->fixtureFactory->get($class, $id)) { |
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| 144 | // Merge existing data with new data, and create new object to replace existing object |
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| 145 | foreach($fields as $k => $v) { |
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| 146 | $existingFixture->$k = $v; |
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| 147 | } |
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| 148 | $existingFixture->write(); |
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| 149 | } else { |
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| 150 | $this->fixtureFactory->createObject($class, $id, $fields); |
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| 151 | } |
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| 152 | } |
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| 153 | |||
| 154 | /** |
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| 155 | * Example: Given a "page" "Page 1" with "URL"="page-1" and "Content"="my page 1" |
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| 156 | * Example: Given the "page" "Page 1" has "URL"="page-1" and "Content"="my page 1" |
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| 157 | * |
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| 158 | * @Given /^(?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)" (?:(with|has)) (?<data>".*)$/ |
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| 159 | */ |
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| 160 | public function stepCreateRecordWithData($type, $id, $data) { |
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| 161 | $class = $this->convertTypeToClass($type); |
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| 162 | preg_match_all( |
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| 163 | '/"(?<key>[^"]+)"\s*=\s*"(?<value>[^"]+)"/', |
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| 164 | $data, |
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| 165 | $matches |
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| 166 | ); |
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| 167 | $fields = $this->convertFields( |
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| 168 | $class, |
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| 169 | array_combine($matches['key'], $matches['value']) |
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| 170 | ); |
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| 171 | $fields = $this->prepareFixture($class, $id, $fields); |
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| 172 | // We should check if this fixture object already exists - if it does, we update it. If not, we create it |
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| 173 | View Code Duplication | if($existingFixture = $this->fixtureFactory->get($class, $id)) { |
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| 174 | // Merge existing data with new data, and create new object to replace existing object |
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| 175 | foreach($fields as $k => $v) { |
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| 176 | $existingFixture->$k = $v; |
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| 177 | } |
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| 178 | $existingFixture->write(); |
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| 179 | } else { |
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| 180 | $this->fixtureFactory->createObject($class, $id, $fields); |
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| 181 | } |
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| 182 | } |
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| 183 | |||
| 184 | /** |
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| 185 | * Example: And the "page" "Page 2" has the following data |
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| 186 | * | Content | <blink> | |
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| 187 | * | My Property | foo | |
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| 188 | * | My Boolean | bar | |
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| 189 | * |
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| 190 | * @Given /^(?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)" has the following data$/ |
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| 191 | */ |
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| 192 | public function stepCreateRecordWithTable($type, $id, $null, TableNode $fieldsTable) { |
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| 193 | $class = $this->convertTypeToClass($type); |
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| 194 | // TODO Support more than one record |
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| 195 | $fields = $this->convertFields($class, $fieldsTable->getRowsHash()); |
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| 196 | $fields = $this->prepareFixture($class, $id, $fields); |
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| 197 | |||
| 198 | // We should check if this fixture object already exists - if it does, we update it. If not, we create it |
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| 199 | View Code Duplication | if($existingFixture = $this->fixtureFactory->get($class, $id)) { |
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| 200 | // Merge existing data with new data, and create new object to replace existing object |
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| 201 | foreach($fields as $k => $v) { |
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| 202 | $existingFixture->$k = $v; |
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| 203 | } |
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| 204 | $existingFixture->write(); |
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| 205 | } else { |
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| 206 | $this->fixtureFactory->createObject($class, $id, $fields); |
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| 207 | } |
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| 208 | } |
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| 209 | |||
| 210 | /** |
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| 211 | * Example: Given the "page" "Page 1.1" is a child of the "page" "Page1". |
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| 212 | * Note that this change is not published by default |
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| 213 | * |
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| 214 | * @Given /^(?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)" is a (?<relation>[^\s]*) of (?:(an|a|the) )"(?<relationType>[^"]+)" "(?<relationId>[^"]+)"/ |
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| 215 | */ |
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| 216 | public function stepUpdateRecordRelation($type, $id, $relation, $relationType, $relationId) { |
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| 217 | $class = $this->convertTypeToClass($type); |
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| 218 | |||
| 219 | $relationClass = $this->convertTypeToClass($relationType); |
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| 220 | $relationObj = $this->fixtureFactory->get($relationClass, $relationId); |
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| 221 | if(!$relationObj) $relationObj = $this->fixtureFactory->createObject($relationClass, $relationId); |
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| 222 | |||
| 223 | $data = array(); |
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| 224 | if($relation == 'child') { |
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| 225 | $data['ParentID'] = $relationObj->ID; |
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| 226 | } |
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| 227 | |||
| 228 | $obj = $this->fixtureFactory->get($class, $id); |
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| 229 | if($obj) { |
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| 230 | $obj->update($data); |
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| 231 | $obj->write(); |
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| 232 | } else { |
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| 233 | $obj = $this->fixtureFactory->createObject($class, $id, $data); |
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| 234 | } |
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| 235 | |||
| 236 | switch($relation) { |
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| 237 | case 'parent': |
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| 238 | $relationObj->ParentID = $obj->ID; |
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| 239 | $relationObj->write(); |
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| 240 | break; |
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| 241 | case 'child': |
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| 242 | // already written through $data above |
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| 243 | break; |
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| 244 | default: |
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| 245 | throw new \InvalidArgumentException(sprintf( |
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| 246 | 'Invalid relation "%s"', $relation |
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| 247 | )); |
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| 248 | } |
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| 249 | } |
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| 250 | |||
| 251 | /** |
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| 252 | * Assign a type of object to another type of object. The base object will be created if it does not exist already. |
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| 253 | * If the last part of the string (in the "X" relation) is omitted, then the first matching relation will be used. |
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| 254 | * |
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| 255 | * @example I assign the "TaxonomyTerm" "For customers" to the "Page" "Page1" |
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| 256 | * @Given /^I assign (?:(an|a|the) )"(?<type>[^"]+)" "(?<value>[^"]+)" to (?:(an|a|the) )"(?<relationType>[^"]+)" "(?<relationId>[^"]+)"$/ |
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| 257 | */ |
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| 258 | public function stepIAssignObjToObj($type, $value, $relationType, $relationId) { |
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| 261 | |||
| 262 | /** |
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| 263 | * Assign a type of object to another type of object. The base object will be created if it does not exist already. |
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| 264 | * If the last part of the string (in the "X" relation) is omitted, then the first matching relation will be used. |
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| 265 | * Assumption: one object has relationship (has_one, has_many or many_many ) with the other object |
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| 266 | * |
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| 267 | * @example I assign the "TaxonomyTerm" "For customers" to the "Page" "Page1" in the "Terms" relation |
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| 268 | * @Given /^I assign (?:(an|a|the) )"(?<type>[^"]+)" "(?<value>[^"]+)" to (?:(an|a|the) )"(?<relationType>[^"]+)" "(?<relationId>[^"]+)" in the "(?<relationName>[^"]+)" relation$/ |
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| 269 | */ |
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| 270 | public function stepIAssignObjToObjInTheRelation($type, $value, $relationType, $relationId, $relationName) { |
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| 271 | $class = $this->convertTypeToClass($type); |
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| 272 | $relationClass = $this->convertTypeToClass($relationType); |
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| 273 | |||
| 274 | // Check if this fixture object already exists - if not, we create it |
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| 275 | $relationObj = $this->fixtureFactory->get($relationClass, $relationId); |
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| 318 | |||
| 319 | /** |
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| 320 | * Example: Given the "page" "Page 1" is not published |
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| 321 | * |
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| 322 | * @Given /^(?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)" is (?<state>[^"]*)$/ |
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| 323 | */ |
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| 324 | public function stepUpdateRecordState($type, $id, $state) { |
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| 356 | |||
| 357 | /** |
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| 358 | * Accepts YAML fixture definitions similar to the ones used in SilverStripe unit testing. |
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| 359 | * |
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| 360 | * Example: Given there are the following member records: |
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| 361 | * member1: |
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| 362 | * Email: [email protected] |
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| 363 | * member2: |
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| 364 | * Email: [email protected] |
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| 365 | * |
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| 366 | * @Given /^there are the following ([^\s]*) records$/ |
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| 367 | */ |
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| 368 | public function stepThereAreTheFollowingRecords($dataObject, PyStringNode $string) { |
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| 377 | |||
| 378 | /** |
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| 379 | * Example: Given a "member" "Admin" belonging to "Admin Group" |
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| 380 | * |
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| 381 | * @Given /^(?:(an|a|the) )"member" "(?<id>[^"]+)" belonging to "(?<groupId>[^"]+)"$/ |
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| 382 | */ |
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| 383 | public function stepCreateMemberWithGroup($id, $groupId) { |
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| 390 | |||
| 391 | /** |
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| 392 | * Example: Given a "member" "Admin" belonging to "Admin Group" with "Email"="[email protected]" |
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| 393 | * |
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| 394 | * @Given /^(?:(an|a|the) )"member" "(?<id>[^"]+)" belonging to "(?<groupId>[^"]+)" with (?<data>.*)$/ |
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| 395 | */ |
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| 396 | public function stepCreateMemberWithGroupAndData($id, $groupId, $data) { |
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| 414 | |||
| 415 | /** |
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| 416 | * Example: Given a "group" "Admin" with permissions "Access to 'Pages' section" and "Access to 'Files' section" |
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| 417 | * |
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| 418 | * @Given /^(?:(an|a|the) )"group" "(?<id>[^"]+)" (?:(with|has)) permissions (?<permissionStr>.*)$/ |
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| 419 | */ |
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| 420 | public function stepCreateGroupWithPermissions($id, $permissionStr) { |
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| 447 | |||
| 448 | /** |
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| 449 | * Navigates to a record based on its identifier set during fixture creation, |
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| 450 | * using its RelativeLink() method to map the record to a URL. |
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| 451 | * Example: Given I go to the "page" "My Page" |
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| 452 | * |
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| 453 | * @Given /^I go to (?:(an|a|the) )"(?<type>[^"]+)" "(?<id>[^"]+)"/ |
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| 454 | */ |
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| 455 | public function stepGoToNamedRecord($type, $id) { |
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| 470 | |||
| 471 | |||
| 472 | /** |
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| 473 | * Checks that a file or folder exists in the webroot. |
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| 474 | * Example: There should be a file "assets/Uploads/test.jpg" |
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| 475 | * |
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| 476 | * @Then /^there should be a (?<type>(file|folder) )"(?<path>[^"]*)"/ |
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| 477 | */ |
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| 478 | public function stepThereShouldBeAFileOrFolder($type, $path) { |
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| 481 | |||
| 482 | /** |
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| 483 | * Checks that a file exists in the asset store with a given filename and hash |
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| 484 | * |
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| 485 | * Example: there should be a filename "Uploads/test.jpg" with hash "59de0c841f" |
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| 486 | * |
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| 487 | * @Then /^there should be a filename "(?<filename>[^"]*)" with hash "(?<hash>[a-fA-Z0-9]+)"/ |
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| 488 | */ |
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| 489 | public function stepThereShouldBeAFileWithTuple($filename, $hash) { |
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| 493 | |||
| 494 | /** |
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| 495 | * Replaces fixture references in values with their respective database IDs, |
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| 496 | * with the notation "=><class>.<identifier>". Example: "=>Page.My Page". |
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| 497 | * |
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| 498 | * @Transform /^([^"]+)$/ |
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| 499 | */ |
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| 500 | public function lookupFixtureReference($string) { |
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| 515 | |||
| 516 | /** |
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| 517 | * @Given /^(?:(an|a|the) )"(?<type>[^"]*)" "(?<id>[^"]*)" was (?<mod>(created|last edited)) "(?<time>[^"]*)"$/ |
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| 518 | */ |
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| 519 | public function aRecordWasLastEditedRelative($type, $id, $mod, $time) { |
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| 544 | |||
| 545 | /** |
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| 546 | * Prepares a fixture for use |
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| 547 | * |
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| 548 | * @param string $class |
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| 549 | * @param string $identifier |
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| 550 | * @param array $data |
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| 551 | * @return array Prepared $data with additional injected fields |
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| 552 | */ |
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| 553 | protected function prepareFixture($class, $identifier, $data = array()) { |
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| 559 | |||
| 560 | protected function prepareAsset($class, $identifier, $data = null) { |
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| 607 | |||
| 608 | /** |
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| 609 | * |
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| 610 | * @return AssetStore |
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| 611 | */ |
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| 612 | protected function getAssetStore() { |
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| 615 | |||
| 616 | /** |
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| 617 | * Converts a natural language class description to an actual class name. |
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| 618 | * Respects {@link DataObject::$singular_name} variations. |
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| 619 | * Example: "redirector page" -> "RedirectorPage" |
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| 620 | * |
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| 621 | * @param String |
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| 622 | * @return String Class name |
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| 623 | */ |
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| 624 | protected function convertTypeToClass($type) { |
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| 645 | |||
| 646 | /** |
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| 647 | * Updates an object with values, resolving aliases set through |
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| 648 | * {@link DataObject->fieldLabels()}. |
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| 649 | * |
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| 650 | * @param string $class Class name |
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| 651 | * @param array $fields Map of field names or aliases to their values. |
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| 652 | * @return array Map of actual object properties to their values. |
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| 653 | */ |
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| 654 | protected function convertFields($class, $fields) { |
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| 665 | |||
| 666 | protected function joinPaths() { |
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| 674 | |||
| 675 | } |
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| 676 |
Loading history...
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: