Complex classes like ManagingProductVariantsContext 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 ManagingProductVariantsContext, and based on these observations, apply Extract Interface, too.
1 | <?php |
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33 | final class ManagingProductVariantsContext implements Context |
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34 | { |
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35 | /** |
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36 | * @var SharedStorageInterface |
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37 | */ |
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38 | private $sharedStorage; |
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39 | |||
40 | /** |
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41 | * @var DefaultProductVariantResolver |
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42 | */ |
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43 | private $defaultProductVariantResolver; |
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44 | |||
45 | /** |
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46 | * @var CreatePageInterface |
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47 | */ |
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48 | private $createPage; |
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49 | |||
50 | /** |
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51 | * @var IndexPageInterface |
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52 | */ |
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53 | private $indexPage; |
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54 | |||
55 | /** |
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56 | * @var UpdatePageInterface |
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57 | */ |
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58 | private $updatePage; |
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59 | |||
60 | /** |
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61 | * @var GeneratePageInterface |
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62 | */ |
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63 | private $generatePage; |
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64 | |||
65 | /** |
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66 | * @var CurrentPageResolverInterface |
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67 | */ |
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68 | private $currentPageResolver; |
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69 | |||
70 | /** |
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71 | * @var NotificationCheckerInterface |
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72 | */ |
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73 | private $notificationChecker; |
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74 | |||
75 | /** |
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76 | * @param SharedStorageInterface $sharedStorage |
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77 | * @param DefaultProductVariantResolver $defaultProductVariantResolver |
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78 | * @param CreatePageInterface $createPage |
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79 | * @param IndexPageInterface $indexPage |
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80 | * @param UpdatePageInterface $updatePage |
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81 | * @param GeneratePageInterface $generatePage |
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82 | * @param CurrentPageResolverInterface $currentPageResolver |
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83 | * @param NotificationCheckerInterface $notificationChecker |
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84 | */ |
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85 | public function __construct( |
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104 | |||
105 | /** |
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106 | * @Given /^I want to create a new variant of (this product)$/ |
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107 | */ |
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108 | public function iWantToCreateANewProduct(ProductInterface $product) |
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112 | |||
113 | /** |
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114 | * @When I specify its code as :code |
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115 | * @When I do not specify its code |
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116 | */ |
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117 | public function iSpecifyItsCodeAs($code = null) |
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121 | |||
122 | /** |
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123 | * @When I name it :name |
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124 | */ |
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125 | public function iNameItIn($name) |
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129 | |||
130 | /** |
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131 | * @When I rename it to :name |
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132 | */ |
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133 | public function iRenameItTo($name) |
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137 | |||
138 | /** |
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139 | * @When I add it |
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140 | * @When I try to add it |
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141 | */ |
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142 | public function iAddIt() |
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146 | |||
147 | /** |
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148 | * @When I disable its inventory tracking |
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149 | */ |
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150 | public function iDisableItsTracking() |
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154 | |||
155 | /** |
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156 | * @When I enable its inventory tracking |
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157 | */ |
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158 | public function iEnableItsTracking() |
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162 | |||
163 | /** |
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164 | * @When /^I set its(?:| default) price to ("(?:€|£|\$)[^"]+")$/ |
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165 | */ |
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166 | public function iSetItsPriceTo($price) |
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170 | |||
171 | /** |
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172 | * @When I choose :calculatorName calculator |
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173 | */ |
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174 | public function iChooseCalculator($calculatorName) |
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178 | |||
179 | /** |
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180 | * @When /^I set its price to "(?:€|£|\$)([^"]+)" for ("[^"]+" currency) and ("[^"]+" channel)$/ |
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181 | */ |
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182 | public function iSetItsPriceToForCurrencyAndChannel($price, CurrencyInterface $currency, ChannelInterface $channel) |
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186 | |||
187 | /** |
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188 | * @When I set its :optionName option to :optionValue |
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189 | */ |
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190 | public function iSetItsOptionAs($optionName, $optionValue) |
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194 | |||
195 | /** |
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196 | * @Then the :productVariantCode variant of the :product product should appear in the shop |
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197 | */ |
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198 | public function theProductVariantShouldAppearInTheShop($productVariantCode, ProductInterface $product) |
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207 | |||
208 | /** |
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209 | * @When /^I (?:|want to )view all variants of (this product)$/ |
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210 | * @When /^I view(?:| all) variants of the (product "[^"]+")$/ |
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211 | */ |
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212 | public function iWantToViewAllVariantsOfThisProduct(ProductInterface $product) |
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216 | |||
217 | /** |
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218 | * @Then I should see :numberOfProductVariants variants in the list |
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219 | * @Then I should see :numberOfProductVariants variant in the list |
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220 | */ |
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221 | public function iShouldSeeProductVariantsInTheList($numberOfProductVariants) |
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231 | |||
232 | /** |
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233 | * @When /^I delete the ("[^"]+" variant of product "[^"]+")$/ |
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234 | * @When /^I try to delete the ("[^"]+" variant of product "[^"]+")$/ |
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235 | */ |
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236 | public function iDeleteTheVariantOfProduct(ProductVariantInterface $productVariant) |
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242 | |||
243 | /** |
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244 | * @Then /^(this variant) should not exist in the product catalog$/ |
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245 | */ |
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246 | public function productVariantShouldNotExist(ProductVariantInterface $productVariant) |
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255 | |||
256 | /** |
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257 | * @Then I should be notified that this variant is in use and cannot be deleted |
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258 | */ |
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259 | public function iShouldBeNotifiedOfFailure() |
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266 | |||
267 | /** |
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268 | * @Then /^(this variant) should still exist in the product catalog$/ |
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269 | */ |
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270 | public function productShouldExistInTheProductCatalog(ProductVariantInterface $productVariant) |
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274 | |||
275 | /** |
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276 | * @When /^I want to modify the ("[^"]+" product variant)$/ |
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277 | * @When /^I want to modify (this product variant)$/ |
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278 | */ |
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279 | public function iWantToModifyAProduct(ProductVariantInterface $productVariant) |
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283 | |||
284 | /** |
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285 | * @Then the code field should be disabled |
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286 | */ |
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287 | public function theCodeFieldShouldBeDisabled() |
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294 | |||
295 | /** |
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296 | * @Then I should be notified that price is required |
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297 | */ |
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298 | public function iShouldBeNotifiedThatPriceIsRequired() |
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302 | |||
303 | /** |
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304 | * @Then /^I should be notified that price is required for the (\d)(?:st|nd|rd|th) variant$/ |
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305 | */ |
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306 | public function iShouldBeNotifiedThatPriceIsRequiredForVariant($position) |
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310 | |||
311 | /** |
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312 | * @Then /^I should be notified that code is required for the (\d)(?:st|nd|rd|th) variant$/ |
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313 | */ |
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314 | public function iShouldBeNotifiedThatCodeIsRequiredForVariant($position) |
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318 | |||
319 | /** |
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320 | * @When I save my changes |
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321 | * @When I try to save my changes |
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322 | */ |
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323 | public function iSaveMyChanges() |
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327 | |||
328 | /** |
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329 | * @When /^I change its price to "(?:€|£|\$)([^"]+)"$/ |
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330 | */ |
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331 | public function iChangeItsPriceTo($price) |
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335 | |||
336 | /** |
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337 | * @When I remove its name |
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338 | */ |
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339 | public function iRemoveItsNameFromTranslation() |
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343 | |||
344 | /** |
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345 | * @Then /^the variant "([^"]+)" should have (\d+) items on hand$/ |
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346 | */ |
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347 | public function thisVariantShouldHaveItemsOnHand($productVariantName, $quantity) |
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354 | |||
355 | /** |
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356 | * @Then /^the "([^"]+)" variant of ("[^"]+" product) should have (\d+) items on hand$/ |
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357 | */ |
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358 | public function theVariantOfProductShouldHaveItemsOnHand($productVariantName, ProductInterface $product, $quantity) |
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367 | |||
368 | /** |
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369 | * @Then /^inventory of (this variant) should not be tracked$/ |
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370 | */ |
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371 | public function thisProductVariantShouldNotBeTracked(ProductVariantInterface $productVariant) |
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380 | |||
381 | /** |
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382 | * @Then /^inventory of (this variant) should be tracked$/ |
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383 | */ |
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384 | public function thisProductVariantShouldBeTracked(ProductVariantInterface $productVariant) |
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393 | |||
394 | /** |
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395 | * @Then /^I should see that the ("([^"]+)" variant) is not tracked$/ |
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396 | */ |
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397 | public function iShouldSeeThatIsNotTracked(ProductVariantInterface $productVariant) |
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404 | |||
405 | /** |
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406 | * @Then /^I should see that the ("[^"]+" variant) has zero on hand quantity$/ |
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407 | */ |
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408 | public function iShouldSeeThatTheVariantHasZeroOnHandQuantity(ProductVariantInterface $productVariant) |
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415 | |||
416 | /** |
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417 | * @Then /^(\d+) units of (this product) should be on hold$/ |
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418 | */ |
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419 | public function unitsOfThisProductShouldBeOnHold($quantity, ProductInterface $product) |
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426 | |||
427 | /** |
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428 | * @Then /^(\d+) units of (this product) should be on hand$/ |
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429 | */ |
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430 | public function unitsOfThisProductShouldBeOnHand($quantity, ProductInterface $product) |
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447 | |||
448 | /** |
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449 | * @Then /^there should be no units of (this product) on hold$/ |
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450 | */ |
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451 | public function thereShouldBeNoUnitsOfThisProductOnHold(ProductInterface $product) |
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458 | |||
459 | /** |
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460 | * @Then the :variant variant should have :amount items on hold |
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461 | * @Then /^(this variant) should have (\d+) items on hold$/ |
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462 | */ |
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463 | public function thisVariantShouldHaveItemsOnHold(ProductVariantInterface $variant, $amount) |
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467 | |||
468 | /** |
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469 | * @Then the :variant variant of :product product should have :amount items on hold |
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470 | */ |
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471 | public function theVariantOfProductShouldHaveItemsOnHold(ProductVariantInterface $variant, ProductInterface $product, $amount) |
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477 | |||
478 | /** |
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479 | * @Then /^(variant with code "[^"]+") for ("[^"]+" currency) and ("[^"]+" channel) should have "(?:€|£|\$)([^"]+)"$/ |
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480 | */ |
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481 | public function theProductForCurrencyAndChannelShouldHave( |
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494 | |||
495 | /** |
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496 | * @Given /^I want to generate new variants for (this product)$/ |
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497 | */ |
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498 | public function iWantToGenerateNewVariantsForThisProduct(ProductInterface $product) |
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502 | |||
503 | /** |
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504 | * @When I generate it |
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505 | * @When I try to generate it |
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506 | */ |
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507 | public function iClickGenerate() |
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511 | |||
512 | /** |
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513 | * @When /^I specify that the (\d)(?:st|nd|rd|th) variant is identified by ("[^"]+") code and costs "(?:€|£|\$)([^"]+)"$/ |
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514 | */ |
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515 | public function iSpecifyThereAreVariantsIdentifiedByCodeWithCost($nthVariant, $code, $price) |
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520 | |||
521 | /** |
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522 | * @When /^I specify that the (\d)(?:st|nd|rd|th) variant is identified by ("[^"]+") code$/ |
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523 | */ |
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524 | public function iSpecifyThereAreVariantsIdentifiedByCode($nthVariant, $code) |
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528 | |||
529 | /** |
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530 | * @When /^I specify that the (\d)(?:st|nd|rd|th) variant costs "(?:€|£|\$)([^"]+)"$/ |
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531 | */ |
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532 | public function iSpecifyThereAreVariantsWithCost($nthVariant, $price) |
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536 | |||
537 | /** |
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538 | * @When /^I remove (\d)(?:st|nd|rd|th) variant from the list$/ |
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539 | */ |
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540 | public function iRemoveVariantFromTheList($nthVariant) |
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544 | |||
545 | /** |
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546 | * @Then I should be notified that it has been successfully generated |
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547 | */ |
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548 | public function iShouldBeNotifiedThatItHasBeenSuccessfullyGenerated() |
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552 | |||
553 | /** |
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554 | * @param string $element |
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555 | * @param $message |
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556 | */ |
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557 | private function assertValidationMessage($element, $message) |
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564 | |||
565 | /** |
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566 | * @param int $expectedAmount |
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567 | * @param ProductVariantInterface $variant |
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568 | * |
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569 | * @throws \InvalidArgumentException |
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570 | */ |
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571 | private function assertOnHoldQuantityOfVariant($expectedAmount, $variant) |
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586 | } |
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587 |
Very long variable names usually make code harder to read. It is therefore recommended not to make variable names too verbose.