fixed root jest coverage report

this is a workaround until this PR gets merged: jestjs/jest#9633

backend/jest.config.js

@@ -5,23 +5,29 @@ const name = require('./package.json').name;
 module.exports = {
   name,
   displayName: name,
+  rootDir: '..',
   preset: 'ts-jest',
   testEnvironment: 'node',
-  roots: ['<rootDir>/src'],
+  roots: [`<rootDir>/${name}/src`],
   transformIgnorePatterns: [
-    '<rootDir>/node_modules/',
-    '<rootDir>/src/__gen/',
-    '<rootDir>/src/common/',
+    `<rootDir>/${name}/node_modules/`,
+    `<rootDir>/${name}/src/__gen/`,
+    `<rootDir>/${name}/src/common/`,
   ],
   collectCoverageFrom: [
-    'src/**/*.ts',
-    '!src/**/*.d.ts',
-    '!src/__gen/**',
-    '!src/common/**',
+    `${name}/src/**/*.ts`,
+    `!${name}/src/**/*.d.ts`,
+    `!${name}/src/__gen/**`,
+    `!${name}/src/common/**`,
   ],
   testMatch: [
-    '<rootDir>/src/**/__tests__/**/*.ts',
-    '<rootDir>/src/**/*.spec.ts',
+    `<rootDir>/${name}/src/**/__tests__/**/*.ts`,
+    `<rootDir>/${name}/src/**/*.spec.ts`,
   ],
   moduleFileExtensions: ['ts', 'js', 'json', 'node'],
+  globals: {
+    'ts-jest': {
+      tsconfig: `<rootDir>/${name}/tsconfig.json`,
+    },
+  },
 };

common/jest.config.js

@@ -5,14 +5,20 @@ const name = require('./package.json').name;
 module.exports = {
   name,
   displayName: name,
+  rootDir: '..',
   preset: 'ts-jest',
   testEnvironment: 'node',
-  roots: ['<rootDir>/src'],
-  transformIgnorePatterns: ['<rootDir>/node_modules/'],
-  collectCoverageFrom: ['src/**/*.ts', '!src/**/*.d.ts'],
+  roots: [`<rootDir>/${name}/src`],
+  transformIgnorePatterns: [`<rootDir>/${name}/node_modules/`],
+  collectCoverageFrom: [`${name}/src/**/*.ts`, `!${name}/src/**/*.d.ts`],
   testMatch: [
-    '<rootDir>/src/**/__tests__/**/*.ts',
-    '<rootDir>/src/**/*.spec.ts',
+    `<rootDir>/${name}/src/**/__tests__/**/*.ts`,
+    `<rootDir>/${name}/src/**/*.spec.ts`,
   ],
   moduleFileExtensions: ['ts', 'js', 'json', 'node'],
+  globals: {
+    'ts-jest': {
+      tsconfig: `<rootDir>/${name}/tsconfig.json`,
+    },
+  },
 };

frontend/jest.config.js

@@ -5,20 +5,23 @@ const name = require('./package.json').name;
 module.exports = {
   name,
   displayName: name,
-  roots: ['<rootDir>/src'],
-  collectCoverageFrom: ['src/**/*.{js,jsx,ts,tsx}', '!src/**/*.d.ts'],
+  rootDir: '..',
+  roots: [`<rootDir>/${name}/src`],
+  collectCoverageFrom: [
+    `${name}/src/**/*.{js,jsx,ts,tsx}`,
+    `!${name}/src/**/*.d.ts`,
+  ],
   setupFiles: ['react-app-polyfill/jsdom'],
-  setupFilesAfterEnv: ['<rootDir>/src/setupTests.ts'],
+  setupFilesAfterEnv: [`<rootDir>/${name}/src/setupTests.ts`],
   testMatch: [
-    '<rootDir>/src/**/__tests__/**/*.{js,jsx,ts,tsx}',
-    '<rootDir>/src/**/*.{spec,test}.{js,jsx,ts,tsx}',
+    `<rootDir>/${name}/src/**/__tests__/**/*.{js,jsx,ts,tsx}`,
+    `<rootDir>/${name}/src/**/*.{spec,test}.{js,jsx,ts,tsx}`,
   ],
   testEnvironment: 'jest-environment-jsdom-fourteen',
   transform: {
     '^.+\\.(js|jsx|ts|tsx)$': ['babel-jest', { cwd: __dirname }],
-    '^.+\\.css$': '<rootDir>/config/jest/cssTransform.js',
-    '^(?!.*\\.(js|jsx|ts|tsx|css|json)$)':
-      '<rootDir>/config/jest/fileTransform.js',
+    '^.+\\.css$': `<rootDir>/${name}/config/jest/cssTransform.js`,
+    '^(?!.*\\.(js|jsx|ts|tsx|css|json)$)': `<rootDir>/${name}/config/jest/fileTransform.js`,
   },
   transformIgnorePatterns: [
     '[/\\\\]node_modules[/\\\\].+\\.(js|jsx|ts|tsx)$',

jest.config.js

@@ -1,6 +1,9 @@
 const packageNames = require('./package.json').workspaces;
 const packageConfigFiles = packageNames.map(name => `<rootDir>/${name}/jest.config.js`);
+const getPackageCoveragePaths = name => require(`./${name}/jest.config.js`).collectCoverageFrom;
+const coveragePaths = packageNames.map(getPackageCoveragePaths).flat();
 
 module.exports = {
-  projects: [...packageConfigFiles]
+  projects: [...packageConfigFiles],
+  collectCoverageFrom: [...coveragePaths]
 };