{"id":3395,"date":"2024-11-09T06:30:12","date_gmt":"2024-11-09T03:30:12","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/"},"modified":"2024-11-09T06:30:12","modified_gmt":"2024-11-09T03:30:12","slug":"jest-ve-esm-ile-test-sorunlari-ve-cozumleri","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/","title":{"rendered":"Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri"},"content":{"rendered":"<p>Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri<\/p>\n<p>Modern JavaScript projeleri, mod\u00fclerlik ve organizasyon sa\u011flayan **ESM (E\u015f Zamanl\u0131 Mod\u00fcl Sistemi)**&#8217;ni benimsiyor. Ancak Jest gibi pop\u00fcler test \u00e7er\u00e7eveleriyle ESM kodunu test etmek baz\u0131 sorunlar yaratabilir. Bu makalede, **Jest ve ESM**&#8217;nin birlikte \u00e7al\u0131\u015ft\u0131\u011f\u0131 zaman kar\u015f\u0131la\u015f\u0131lan yayg\u0131n sorunlar\u0131 ve bu sorunlar\u0131 \u00e7\u00f6zmek i\u00e7in ad\u0131m ad\u0131m k\u0131lavuzlar sunaca\u011f\u0131m.<\/p>\n<h2>ESM ile Test Etmenin Zorluklar\u0131<\/h2>\n<p>Jest, CommonJS mod\u00fcl sistemini varsay\u0131lan olarak kullan\u0131r. ESM mod\u00fclleri, **import\/export** deyimleriyle \u00e7al\u0131\u015f\u0131r ve CommonJS mod\u00fclleri ise **require()** fonksiyonuyla \u00e7al\u0131\u015f\u0131r. Bu farkl\u0131l\u0131klar, Jest&#8217;in ESM kodunu tan\u0131mas\u0131na ve do\u011fru \u015fekilde test etmesine engel olabilir. <\/p>\n<p>\u00d6rne\u011fin, a\u015fa\u011f\u0131daki ESM kodunu d\u00fc\u015f\u00fcn\u00fcn:<\/p>\n<p>&#8220;`javascript<br \/>\n\/\/ my-module.js<br \/>\nexport const add = (a, b) => a + b;<br \/>\n&#8220;`<\/p>\n<p>Bu kodu Jest ile test etmek i\u00e7in a\u015fa\u011f\u0131daki gibi bir test dosyas\u0131 olu\u015fturabiliriz:<\/p>\n<p>&#8220;`javascript<br \/>\n\/\/ my-module.test.js<br \/>\nimport { add } from &#8216;.\/my-module&#8217;;<\/p>\n<p>test(&#8216;add function should work correctly&#8217;, () => {<br \/>\n  expect(add(2, 3)).toBe(5);<br \/>\n});<br \/>\n&#8220;`<\/p>\n<p>Bu test \u00e7al\u0131\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda,  **&#8221;Cannot find module &#8216;my-module'&#8221;**  hatas\u0131yla kar\u015f\u0131la\u015fabiliriz. \u00c7\u00fcnk\u00fc Jest,  **require()**  fonksiyonunu kullanarak ESM kodunu y\u00fcklemeye \u00e7al\u0131\u015f\u0131r ve bu da beklendi\u011fi gibi \u00e7al\u0131\u015fmaz.<\/p>\n<h2>\u00c7\u00f6z\u00fcmler<\/h2>\n<p>Jest ve ESM aras\u0131nda uyumluluk sa\u011flamak i\u00e7in birka\u00e7 farkl\u0131 y\u00f6ntem kullan\u0131labilir:<\/p>\n<h3>1. Jest Konfig\u00fcrasyonu<\/h3>\n<p>Jest konfig\u00fcrasyon dosyas\u0131 (jest.config.js)  **&#8221;transform&#8221;**  \u00f6zelli\u011fini kullanarak ESM kodunu i\u015fleyebilirsiniz. \u00d6rne\u011fin:<\/p>\n<p>&#8220;`javascript<br \/>\nmodule.exports = {<br \/>\n  transform: {<br \/>\n    &#8216;^.+\\\\.jsx?$&#8217;: &#8216;babel-jest&#8217;,<br \/>\n    &#8216;^.+\\\\.mjs$&#8217;: &#8216;babel-jest&#8217;,<br \/>\n  },<br \/>\n};<br \/>\n&#8220;`<\/p>\n<p>Bu konfig\u00fcrasyon, .jsx ve .mjs uzant\u0131l\u0131 dosyalar\u0131 **babel-jest**  transformat\u00f6r\u00fc ile i\u015fler. **babel-jest**, ESM kodunu Jest taraf\u0131ndan anla\u015f\u0131labilir hale getirir. **Babel**  kullanmak i\u00e7in, projenize **&#8221;@babel\/core&#8221;**  ve **&#8221;@babel\/preset-env&#8221;**  paketlerini y\u00fcklemeniz gerekir.<\/p>\n<h3>2. &#8220;type&#8221; Alan\u0131<\/h3>\n<p>Paket.json dosyas\u0131nda  **&#8221;type&#8221;**  alan\u0131n\u0131  **&#8221;module&#8221;**  olarak ayarlayarak projenizi ESM mod\u00fcl sistemi ile \u00e7al\u0131\u015ft\u0131rmaya zorlayabilirsiniz:<\/p>\n<p>&#8220;`json<br \/>\n{<br \/>\n  &#8220;type&#8221;: &#8220;module&#8221;<br \/>\n}<br \/>\n&#8220;`<\/p>\n<p>Bu ayar, Node.js&#8217;in ESM kodunu do\u011frudan y\u00fcklemesini sa\u011flayacak ve Jest&#8217;in de bunu anlamas\u0131 i\u00e7in gerekli ayarlamalar\u0131 yapacakt\u0131r.<\/p>\n<h3>3. Jest&#8217;in &#8220;moduleFileExtensions&#8221; \u00d6zelli\u011fi<\/h3>\n<p>Jest&#8217;in  **&#8221;moduleFileExtensions&#8221;**  \u00f6zelli\u011fini kullanarak Jest&#8217;in hangi dosya uzant\u0131lar\u0131n\u0131 ESM olarak tan\u0131mas\u0131n\u0131 sa\u011flayabilirsiniz:<\/p>\n<p>&#8220;`javascript<br \/>\nmodule.exports = {<br \/>\n  moduleFileExtensions: [&#8216;js&#8217;, &#8216;mjs&#8217;, &#8216;jsx&#8217;, &#8216;ts&#8217;, &#8216;tsx&#8217;],<br \/>\n};<br \/>\n&#8220;`<\/p>\n<p>Bu konfig\u00fcrasyon, Jest&#8217;in  **&#8221;.mjs&#8221;**  uzant\u0131l\u0131 dosyalar\u0131 ESM olarak tan\u0131mas\u0131n\u0131 sa\u011flayacakt\u0131r.<\/p>\n<h2>\u00d6rnek Uygulama<\/h2>\n<p>\u0130\u015fte ESM ile Jest aras\u0131ndaki uyumlulu\u011fu g\u00f6steren bir \u00f6rnek uygulama:<\/p>\n<p>&#8220;`javascript<br \/>\n\/\/ my-module.js<br \/>\nexport const add = (a, b) => a + b;<\/p>\n<p>\/\/ my-module.test.js<br \/>\nimport { add } from &#8216;.\/my-module&#8217;;<\/p>\n<p>test(&#8216;add function should work correctly&#8217;, () => {<br \/>\n  expect(add(2, 3)).toBe(5);<br \/>\n});<br \/>\n&#8220;`<\/p>\n<p>Bu uygulamay\u0131 \u00e7al\u0131\u015ft\u0131rmak i\u00e7in, \u00f6ncelikle a\u015fa\u011f\u0131daki paketleri y\u00fcklemeniz gerekir:<\/p>\n<p>&#8220;`bash<br \/>\nnpm install jest @babel\/core @babel\/preset-env babel-jest<br \/>\n&#8220;`<\/p>\n<p>Daha sonra,  **jest.config.js**  dosyas\u0131n\u0131 yukar\u0131da bahsedilen konfig\u00fcrasyonla olu\u015fturun. \u015eimdi,  **&#8221;npm test&#8221;**  komutunu \u00e7al\u0131\u015ft\u0131rarak testleri \u00e7al\u0131\u015ft\u0131rabilirsiniz.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Jest ve ESM birlikte \u00e7al\u0131\u015fabilir ve ESM kodunuzu test etmek i\u00e7in bir\u00e7ok farkl\u0131 se\u00e7enek mevcuttur. Bu makalede ele al\u0131nan \u00e7\u00f6z\u00fcmlerle Jest ve ESM aras\u0131ndaki uyumlulu\u011fu sa\u011flayabilir ve projenizin testlerini sorunsuz bir \u015fekilde \u00e7al\u0131\u015ft\u0131rabilirsiniz. Daha fazla bilgi edinmek ve ek kaynaklara ula\u015fmak i\u00e7in  <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a>  adresini ziyaret edebilirsiniz.<\/p>\n<p>#Etiketler<br \/>\nJest, ESM, Test, JavaScript, Mod\u00fclerlik, Uyumluluk, \u00c7\u00f6z\u00fcm, Babel, Paket.json, Konfig\u00fcrasyon, Transformat\u00f6r, Node.js, require(), import\/export<\/p>\n","protected":false},"excerpt":{"rendered":"Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri Modern JavaScript projeleri, mod\u00fclerlik ve organizasyon sa\u011flayan **ESM (E\u015f Zamanl\u0131&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-3395","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri<\/title>\n<meta name=\"description\" content=\"Modern JavaScript projeleri, mod\u00fclerlik ve organizasyon sa\u011flayan **ESM (E\u015f Zamanl\u0131 Mod\u00fcl Sistemi)**&#039;ni benimsiyor. Ancak Jest gibi pop\u00fcler test \u00e7er\u00e7eveleriyle ESM kodunu test etmek baz\u0131 sorunlar yaratabilir. Bu makalede, **Jest ve ESM**&#039;nin birlikte \u00e7al\u0131\u015ft\u0131\u011f\u0131 zaman kar\u015f\u0131la\u015f\u0131lan yayg\u0131n sorunlar\u0131 ve bu sorunlar\u0131 \u00e7\u00f6zmek i\u00e7in ad\u0131m ad\u0131m k\u0131lavuzlar sunaca\u011f\u0131m.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri\" \/>\n<meta property=\"og:description\" content=\"Modern JavaScript projeleri, mod\u00fclerlik ve organizasyon sa\u011flayan **ESM (E\u015f Zamanl\u0131 Mod\u00fcl Sistemi)**&#039;ni benimsiyor. Ancak Jest gibi pop\u00fcler test \u00e7er\u00e7eveleriyle ESM kodunu test etmek baz\u0131 sorunlar yaratabilir. Bu makalede, **Jest ve ESM**&#039;nin birlikte \u00e7al\u0131\u015ft\u0131\u011f\u0131 zaman kar\u015f\u0131la\u015f\u0131lan yayg\u0131n sorunlar\u0131 ve bu sorunlar\u0131 \u00e7\u00f6zmek i\u00e7in ad\u0131m ad\u0131m k\u0131lavuzlar sunaca\u011f\u0131m.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-09T03:30:12+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri\",\"datePublished\":\"2024-11-09T03:30:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/\"},\"wordCount\":578,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/#respond\"]}],\"copyrightYear\":\"2024\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/jest-ve-esm-ile-test-sorunlari-ve-cozumleri\/\",\"name\":\"Jest ve ESM ile Test Sorunlar\u0131 ve \u00c7\u00f6z\u00fcmleri\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2024-11-09T03:30:12+00:00\",\"description\":\"Modern JavaScript projeleri, mod\u00fclerlik ve organizasyon sa\u011flayan **ESM (E\u015f Zamanl\u0131 Mod\u00fcl Sistemi)**'ni benimsiyor. 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