In Angular’s Karma and Jasmine setup, Istanbul is used for measuring test coverage. Istanbul rewrites the code under test to record whether a statement, branch, function and line was called. Then it produces a comprehensive test report.

A GitHub action to comment on a PR on GitHub with a simple test coverage summary table that edits itself on successive pushes to the same PR. Add "codeCoverage": true, under test > options in angular.json

June 26, 2021 - ❯ npx @angular/cli@12 new web-apps --create-application false ❯ cd web-apps && yarn ng g app command-center --routing --style scss ❯ yarn add --dev karma-junit-reporter ... plugins: [ ..., require('karma-junit-reporter') ], coverageReporter: { ..., reporters: [ ..., { type: 'cobertura' }, ] }, reporters: [..., 'junit'] ng test --project command-center --no-watch --code-coverage

November 13, 2021 - $ ng test --no-watch --no-progress --browsers=ChromeHeadlessCI --code-coverage // in 13.0.2, it will print messages below but it works well under angular v12.x // I'm not sure if something wrong I configured or just some break changes happened in v13.x :( =============================== Coverage summary =============================== Statements : Unknown% ( 0/0 ) Branches : Unknown% ( 0/0 ) Functions : Unknown% ( 0/0 ) Lines : Unknown% ( 0/0 ) ================================================================================

June 21, 2018 - "root": "libs/admin/acl/feature-acl", "sourceRoot": "libs/admin/acl/feature-acl/src", "projectType": "library", "architect": { "test": { "builder": "@angular-devkit/build-angular:karma", "options": { "main": "libs/admin/acl/feature-acl/src/test.ts", "tsConfig": "libs/admin/acl/feature-acl/src/tsconfig.spec.json", "karmaConfig": "libs/admin/acl/feature-acl/karma.conf.js", codeCoverageInclude: ["libs/admin/acl/feature-acl"] } } }

Code coverage done right. Hosted coverage report highly integrated with GitHub, Bitbucket and GitLab. Awesome pull request comments to enhance your QA.

"serve": { "builder": "ngx-build-plus:dev-server", "options": { "browserTarget": "cypress-angular-coverage-example:build", "extraWebpackConfig": "./cypress/coverage.webpack.js" }, Instrument JS files with istanbul-lib-instrument for subsequent code coverage reporting ·

November 20, 2025 - Since Angular v21, Vitest is the new default test runner. However, when generating code coverage reports using @vitest/coverage-v8, the output is empty, showing 0% coverage across all metrics.

April 1, 2019 - Angular is cross-platform, fast, scalable, has incredible tooling, and is loved by millions. Get started in 5 minutes. ... Learn about the latest improvements. Check out our upgrade guide to find out the best way to upgrade your project. Read through our contributing guidelines to learn about our submission process, coding rules and more. Want to report a bug, contribute some code, or improve documentation?

October 7, 2019 - Cobertura report includes method's names. λ ng --version _ _ ____ _ ___ / \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _| / △ \ | '_ \ / _` | | | | |/ _` | '__| | | | | | | / ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | | /_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___| |___/ Angular CLI: 8.3.8 Node: 10.15.1 OS: win32 x64 Angular: 8.2.9 ...

March 27, 2017 - @angular/cli: 1.0.0 (Problem was first discovered using version 1.0.0.rc1) node: 6.9.4 os: win32 x64 (Windows 7 Enterprise) ... ng test --single-run --code-coverage --reporters teamcity - the tests run with TeamCity reporting as expected.

October 26, 2018 - Example codecov repo can provide more guidance. We can introduce new coverage npm script which will run all tests together (both model and schematics, using appropriate glob pattern) and this script should run on the CI build ( .travis.yml ) We're aiming on combined coverage of both model and schematics, It can be tested locally by using html reporter and opening generated coverage/index.html.

78.37% Statements 547/698 · 55.25% Branches 121/219 · 73.66% Functions 151/205 · 76.66% Lines 440/574 · Code coverage generated by istanbul at Fri May 27 2016 16:35:54 GMT+0200 (CEST)

July 26, 2018 - Angular CLI: 6.1.0 Node: 8.9.4 ... @schematics/angular 0.7.0 @schematics/update 0.7.0 rxjs 6.2.2 typescript 2.9.2 webpack 4.9.2 · Run ng test --code-coverage Notice that things like import statements are counted as if else branches. ... I expect to see things like import statements and decorator metadata to not be marked as if else branches in the code coverage report...

February 4, 2022 - When I started testing Angular 4 code with .spec.ts files, I quickly realized something: even though I was not doing integration tests, my tests were overlapping (see example below). I made it a mission to reach 100% test coverage without overlap.

June 13, 2018 - After editing test.ts (replace const context = require.context('./', true, /\.spec\.ts$/); with const context = require.context('./', true, /\/app\/.*\.ts$/); and reruning ng test --code-coverage --watch false ServiceA is visible in report but has some unrealistic values (Statement Coverage at 80%, Branches at 100%, Lines 83%)

Code coverage reports show you any parts of your code base that might not be properly tested by your unit tests.

March 9, 2017 - I would like to find some doc about how to view the code coverage report generated by angular-cli, i run "coverage": "lite-server -c bs-config.json" ,but is that the preferred way to do it? How can we export it to travis and watch it on some coverage reporting site(i read about coveralls, but ...

March 20, 2017 - - [x] bug report -> please search issues before submitting - [ ] feature request Versions. $ ng --version @angular/cli: 1.0.0-rc.2 node: 6.9.5 os: win32 x64 @angular/common: 4.0.0-rc.5 @angular/compiler: 4.0.0-rc.5 @angular/core: 4.0.0-r...