{"id":1232,"date":"2021-05-07T23:32:09","date_gmt":"2021-05-07T13:32:09","guid":{"rendered":"https:\/\/www.moneystock.net\/wp_e\/?p=1232"},"modified":"2021-05-07T23:32:09","modified_gmt":"2021-05-07T13:32:09","slug":"when-test-driven-development-goes-wrong","status":"publish","type":"post","link":"https:\/\/moneystock.net\/wp_e\/2021\/05\/07\/when-test-driven-development-goes-wrong\/","title":{"rendered":"When Test Driven Development Goes Wrong"},"content":{"rendered":"

When you feel TDD is difficult when you first started TDD, that might sign that there are improvements to make in the design.<\/p>\n

There are 5 common anti-patterns.<\/p>\n

    \n
  1. The Liar
    \nPasses all tests with no useful assertions, which could be caused by chasing test coverage.
    \n=> Write the test first, which fails with a purpose.<\/li>\n
  2. Excessive Setup
    \nTest and Code are highly coupled. Hard to maintain.
    \n=> Improve Abstraction and Separation of Concerns. Write Test first.<\/li>\n
  3. The Giant
    \nMany lines of code and many assertions which caused by writing the code first before writing testing. This isn’t easy to understand.
    \n=> Decomposed into multiple test cases.<\/li>\n
  4. The Mockery
    \nUse so many mocks, which is similar to the excessive setup.
    \n=> Review design of code. The same solution as #2.<\/li>\n
  5. The inspector
    \nViolate encapsulation to make assertions, which can be caused by poor dependency injection.
    \n=> Never compromise encapsulation for testing. Design for testability.<\/li>\n<\/ol>\n

    In summary, to practice TDD correctly, write a test first, which will help design the code testable.<\/p>\n

     <\/p>\n

    reference: GOTO 2021 \u2022 When Test Driven Development Goes Wrong \u2022 Dave Farley<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

    When you feel TDD is difficult when you first started TDD, that might sign that there are improvements to make in the design. There are 5 common anti-patterns. The Liar Passes all tests with no useful assertions, which could be caused by chasing test coverage. => Write the test first, which fails with a purpose.… Continue reading When Test Driven Development Goes Wrong<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[606,548],"tags":[622,624],"class_list":["post-1232","post","type-post","status-publish","format-standard","hentry","category-architecture","category-c","tag-tdd","tag-test-driven-development","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/posts\/1232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/comments?post=1232"}],"version-history":[{"count":1,"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/posts\/1232\/revisions"}],"predecessor-version":[{"id":1233,"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/posts\/1232\/revisions\/1233"}],"wp:attachment":[{"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/media?parent=1232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/categories?post=1232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/moneystock.net\/wp_e\/wp-json\/wp\/v2\/tags?post=1232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}