chore: script to allow simple collection of coverage from all projects

.vscode/settings.json

@@ -3,8 +3,7 @@
   "files.exclude": {
     "**/.git": true,
     "**/node_modules": true,
-    "**/build": true,
-    "**/coverage": true
+    "**/build": true
   },
   "editor.formatOnSave": true,
   "eslint.validate": ["javascript", "javascriptreact", "typescript", "typescriptreact"],

package.json

@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "description": "amplify-cli",
   "scripts": {
+    "coverage:collect": "ts-node ./scripts/coverage.ts",
     "addwords": "node ./scripts/add-to-dict.js",
     "test-changed": "nx affected --target=test",
     "test": "nx run-many --target=test --all",
@@ -122,6 +123,9 @@
     "execa": "^5.1.1",
     "glob": "^7.2.0",
     "husky": "^3.1.0",
+    "istanbul-lib-coverage": "^3.2.0",
+    "istanbul-lib-report": "^3.0.0",
+    "istanbul-reports": "^3.1.5",
     "jest": "^27.0.0",
     "jest-circus": "^27.0.0",
     "jest-junit": "^12.0.0",
@@ -146,4 +150,4 @@
     "**/nth-check": "^2.0.1",
     "**/undici": "^5.8.0"
   }
-}
+}

scripts/coverage.ts

@@ -0,0 +1,65 @@
+import * as fs from 'fs';
+import * as path from 'path';
+import * as istanbul from 'istanbul-lib-coverage';
+import * as libReport from 'istanbul-lib-report';
+import * as reports from 'istanbul-reports';
+
+const deleteCoverageDir = () => {
+  fs.rmdirSync(path.join(process.cwd(), './coverage'), { recursive: true });
+};
+
+const makeCoverageDir = () => {
+  fs.mkdirSync(path.join(process.cwd(), './coverage/workspaces'), { recursive: true });
+};
+
+const listPackages = () => {
+  const packages = fs.readdirSync(path.join(process.cwd(), './packages'));
+  return packages;
+};
+
+const copyPackageCoverage = (pkg: string) => {
+  const coverageFile = path.join(process.cwd(), `./packages/${pkg}/coverage/coverage-final.json`);
+  if (fs.existsSync(coverageFile)) {
+    const target = path.join(process.cwd(), `./coverage/workspaces/${pkg}-coverage-final.json`);
+    fs.copyFileSync(coverageFile, target);
+  }
+};
+
+const getCoverageFiles = () => {
+  const files = fs.readdirSync(path.join(process.cwd(), './coverage/workspaces'));
+  return files.map(f => path.join(process.cwd(), `./coverage/workspaces/${f}`));
+};
+
+const mergeCoverageMap = (files: string[]): istanbul.CoverageMap => {
+  var map = istanbul.createCoverageMap({});
+  files.forEach(file => {
+    const json = fs.readFileSync(file).toString();
+    map.merge(JSON.parse(json));
+  });
+  return map;
+};
+
+const writeCoverageJson = (map: istanbul.CoverageMap) => {
+  const json = JSON.stringify(map);
+  fs.writeFileSync(path.join(process.cwd(), './coverage/monorepo-coverage.json'), json);
+};
+
+const generateReport = (coverage: istanbul.CoverageMap) => {
+  const context = libReport.createContext({
+    dir: path.join(process.cwd(), './coverage/html'),
+    defaultSummarizer: 'pkg',
+    coverageMap: coverage,
+  });
+  reports.create('html-spa', {}).execute(context);
+};
+
+const main = () => {
+  deleteCoverageDir();
+  makeCoverageDir();
+  listPackages().forEach(copyPackageCoverage);
+  const coverage = mergeCoverageMap(getCoverageFiles());
+  generateReport(coverage);
+  writeCoverageJson(coverage);
+};
+
+main();

yarn.lock

@@ -17072,7 +17072,7 @@ istanbul-lib-instrument@^5.1.0:
 
 istanbul-lib-report@^3.0.0:
   version "3.0.0"
-  resolved "https://registry.npmjs.org/istanbul-lib-report/-/istanbul-lib-report-3.0.0.tgz#7518fe52ea44de372f460a76b5ecda9ffb73d8a6"
+  resolved "https://registry.yarnpkg.com/istanbul-lib-report/-/istanbul-lib-report-3.0.0.tgz#7518fe52ea44de372f460a76b5ecda9ffb73d8a6"
   integrity sha512-wcdi+uAKzfiGT2abPpKZ0hSU1rGQjUQnLvtY5MpQ7QCTahD3VODhcu4wcfY1YtkGaDD5yuydOLINXsfbus9ROw==
   dependencies:
     istanbul-lib-coverage "^3.0.0"
@@ -17096,7 +17096,7 @@ istanbul-reports@^3.0.2:
     html-escaper "^2.0.0"
     istanbul-lib-report "^3.0.0"
 
-istanbul-reports@^3.1.3:
+istanbul-reports@^3.1.3, istanbul-reports@^3.1.5:
   version "3.1.5"
   resolved "https://registry.yarnpkg.com/istanbul-reports/-/istanbul-reports-3.1.5.tgz#cc9a6ab25cb25659810e4785ed9d9fb742578bae"
   integrity sha512-nUsEMa9pBt/NOHqbcbeJEgqIlY/K7rVWUX6Lql2orY5e9roQOthbR3vtY4zzf2orPELg80fnxxk9zUyPlgwD1w==