{"id":63188,"date":"2024-04-12T23:07:04","date_gmt":"2024-04-12T19:37:04","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/how-to-write-tests-with-typescript-and-jest-3p6h\/"},"modified":"2024-04-12T23:07:04","modified_gmt":"2024-04-12T19:37:04","slug":"how-to-write-tests-with-typescript-and-jest-3p6h","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/how-to-write-tests-with-typescript-and-jest-3p6h\/","title":{"rendered":"\u0646\u062d\u0648\u0647 \u0646\u0648\u0634\u062a\u0646 \u062a\u0633\u062a \u0628\u0627 \u062a\u0627\u06cc\u067e \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0648 \u0634\u0648\u062e\u06cc"},"content":{"rendered":"
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\u0645\u0631\u062d\u0644\u0647 1: \u067e\u0631\u0648\u0698\u0647 TypeScript \u062e\u0648\u062f \u0631\u0627 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u06a9\u0646\u06cc\u062f<\/strong><\/p>\n

\u06cc\u06a9 \u067e\u0648\u0634\u0647 \u062c\u062f\u06cc\u062f \u0628\u0633\u0627\u0632\u06cc\u062f<\/p>\n

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mkdir test\ncd test\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u06cc\u06a9 \u067e\u0631\u0648\u0698\u0647 TypeScript \u062c\u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f.<\/p>\n
\u067e\u0631\u0648\u0698\u0647 \u062e\u0648\u062f \u0631\u0627 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u06a9\u0646\u06cc\u062f \u0648 a \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f package.json<\/code> \u0627\u06af\u0631 \u0642\u0628\u0644\u0627\u064b \u06cc\u06a9\u06cc \u0631\u0627 \u0646\u062f\u0627\u0631\u06cc\u062f \u067e\u0631\u0648\u0646\u062f\u0647 \u06a9\u0646\u06cc\u062f:<\/p>\n
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pnpm init\n\npnpm init -y\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
TypeScript \u0648 Jest \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u0648\u0627\u0628\u0633\u062a\u06af\u06cc \u0647\u0627\u06cc \u062a\u0648\u0633\u0639\u0647 \u0646\u0635\u0628 \u06a9\u0646\u06cc\u062f:<\/p>\n
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npm i jest typescript ts-jest ts-node @types\/jest @types\/node -D\n\npnpm add jest typescript ts-jest ts-node @types\/jest @types\/node -D\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0645\u0631\u062d\u0644\u0647 2: TypeScript \u0631\u0627 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u06a9\u0646\u06cc\u062f<\/strong><\/p>\n
\u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 tsconfig.json<\/code> \u0641\u0627\u06cc\u0644 \u0628\u0631\u0627\u06cc \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc TypeScript. 
\u0645\u06cc \u062a\u0648\u0627\u0646\u06cc\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f tsc --init<\/code> \u062f\u0633\u062a\u0648\u0631 \u062f\u0647\u06cc\u062f \u06cc\u0627 \u0622\u0646 \u0631\u0627 \u0628\u0647 \u0635\u0648\u0631\u062a \u062f\u0633\u062a\u06cc \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f.<\/p>\n
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{\n  \"compilerOptions\": {\n    \"target\": \"ES6\",\n    \"module\": \"CommonJS\",\n    \"outDir\": \".\/dist\",\n    \"rootDir\": \".\/src\"\n  }\n},\n  \"include\": [\n    \"src\"\n  ]\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 jest.config.ts<\/code> \u0641\u0627\u06cc\u0644 \u0628\u0631\u0627\u06cc \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc Jest<\/p>\n
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pnpm create jest \n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
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import type {Config} from 'jest';\n\n  const config: Config = {\n  collectCoverage: true,\n  coverageProvider: \"v8\",\n  preset: 'ts-jest',\n  roots: [\n     \"<rootDir>\"\n   ],\n  testEnvironment: \"node\",\n  verbose: true,\n  transform: {}\n}\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0627\u06cc\u062c\u0627\u062f \u06cc\u06a9 src<\/code> \u062f\u0627\u06cc\u0631\u06a9\u062a\u0648\u0631\u06cc \u0628\u0631\u0627\u06cc \u0641\u0627\u06cc\u0644 \u0647\u0627\u06cc \u0645\u0646\u0628\u0639 TypeScript \u0634\u0645\u0627 \u0648 a tests<\/code> \u062f\u0627\u06cc\u0631\u06a9\u062a\u0648\u0631\u06cc \u0628\u0631\u0627\u06cc \u0641\u0627\u06cc\u0644 \u0647\u0627\u06cc \u0622\u0632\u0645\u0627\u06cc\u0634\u06cc \u0634\u0645\u0627<\/p>\n
\u06cc\u06a9 \u0641\u0627\u06cc\u0644 \u062f\u0627\u062e\u0644 \u067e\u0648\u0634\u0647 \u0627\u06cc\u062c\u0627\u062f \u0645\u06cc \u06a9\u0646\u062f src<\/code> \u0634\u0645\u0627 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0646\u0627\u0645 \u0628\u0628\u0631\u06cc\u062f operation.ts<\/code><\/p>\n
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export function Sum(a: number, b: number): number {\n  return a + b;\n}\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0641\u0627\u06cc\u0644\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 \u0645\u062d\u0644 \u062a\u0633\u062a \u0627\u06cc\u062c\u0627\u062f \u06a9\u0631\u062f\u06cc\u0645 \u0631\u0627 \u062f\u0631 \u06cc\u06a9 \u0641\u0627\u06cc\u0644 \u062c\u062f\u06cc\u062f \u0628\u0627 \u0646\u0627\u0645 \u0648\u0627\u0631\u062f \u06a9\u0646\u06cc\u062f operation.test.ts<\/code> \u06cc\u0627 operation.spec.ts<\/code><\/p>\n
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import { Sum} from \"..\/src\/operation\";\n\ndescribe(\"Math functions\", () => {\n  test(\"should add two numbers correctly\", () => {\n    expect(add(1, 2)).toEqual(3);\n  });\n});\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0645\u0631\u062d\u0644\u0647 3: \u062a\u0633\u062a \u0647\u0627\u06cc \u062e\u0648\u062f \u0631\u0627 \u0627\u062c\u0631\u0627 \u06a9\u0646\u06cc\u062f<\/strong><\/p>\n
\u06cc\u06a9 \u0627\u0633\u06a9\u0631\u06cc\u067e\u062a \u0628\u0647 \u062e\u0648\u062f \u0627\u0636\u0627\u0641\u0647 \u06a9\u0646\u06cc\u062f package.json<\/code> \u0628\u0631\u0627\u06cc \u0627\u062c\u0631\u0627\u06cc \u062a\u0633\u062a \u0647\u0627:<\/p>\n
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\"scripts\": {\n  \"test\": \"jest\"\n}\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div>\n
\u0622\u0632\u0645\u0627\u06cc\u0634\u0627\u062a \u062e\u0648\u062f \u0631\u0627 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632:<\/p>\n
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npm run test\n\npnpm run test\n<\/code><\/pre>\n
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\n    \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n
    \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f<\/title>\n    \n<\/svg><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"
\u0645\u0631\u062d\u0644\u0647 1: \u067e\u0631\u0648\u0698\u0647 TypeScript \u062e\u0648\u062f \u0631\u0627 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u06a9\u0646\u06cc\u062f \u06cc\u06a9 \u067e\u0648\u0634\u0647 \u062c\u062f\u06cc\u062f \u0628\u0633\u0627\u0632\u06cc\u062f mkdir test cd test \u0648\u0627\u0631\u062f \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u0634\u0648\u06cc\u062f \u0627\u0632 \u062d\u0627\u0644\u062a \u062a\u0645\u0627\u0645 \u0635\u0641\u062d\u0647 \u062e\u0627\u0631\u062c \u0634\u0648\u06cc\u062f \u06cc\u06a9 \u067e\u0631\u0648\u0698\u0647 TypeScript \u062c\u062f\u06cc\u062f \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f. \u067e\u0631\u0648\u0698\u0647 \u062e\u0648\u062f \u0631\u0627 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u06a9\u0646\u06cc\u062f \u0648 a \u0627\u06cc\u062c\u0627\u062f \u06a9\u0646\u06cc\u062f package.json \u0627\u06af\u0631 \u0642\u0628\u0644\u0627\u064b \u06cc\u06a9\u06cc \u0631\u0627 \u0646\u062f\u0627\u0631\u06cc\u062f \u067e\u0631\u0648\u0646\u062f\u0647 \u06a9\u0646\u06cc\u062f: pnpm init pnpm …<\/p>\n","protected":false},"author":2,"featured_media":63189,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-63188","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/63188","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=63188"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/63188\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media\/63189"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=63188"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=63188"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=63188"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}