These symbols are in front of if-else statements. As you can see in the image you have attached, ‘E‘ is in front of an if-else statement in which the ‘Else’ block is not covered and ‘I‘ is in front an if-else statement in which the ‘If’ block is not covered.
After some trying around i clearly find istanbul the most convenient tool to bring coverage analysis to a node-js project. its installed with npm install it sets up its behavior via the .istanbul.yml gets invoked by its own executable it provides multiple report formats such as clover, lcov, jscoverage, etc. Istanbul uses the provided executable … Read more
Right, after some digging I’ve managed to get this working. I’ve added “nyc”: { “include”: “app”, // Only looks in the app folder “exclude”: “**/*.spec.js” } to my package.json. Since I’m using webpack I’ll probably try and find a way of defining this rule in the webpack.config.js file (if possible at all). I’ll come back … Read more
TL;DR: There is a tool: https://github.com/SitePen/remap-istanbul described as A tool for remapping Istanbul coverage via Source Maps The article on Sitepan describes it in more detail: Intern as well as other JavaScript testing frameworks utilise Istanbul for their code coverage analysis. As we started to adopt more and more TypeScript for our own projects, we … Read more
With the latest CLI, inside angular.json “test”: { “builder”: “@angular-devkit/build-angular:karma”, “options”: { “main”: “src/test.ts”, “polyfills”: “src/polyfills.ts”, “tsConfig”: “src/tsconfig.spec.json”, “karmaConfig”: “./karma.conf.js”, “codeCoverageExclude”: [“src/testing/**/*”],
Using Babel 6.x, let’s say we have file test/pad.spec.js: import pad from ‘../src/assets/js/helpers/pad’; import assert from ‘assert’; describe(‘pad’, () => { it(‘should pad a string’, () => { assert.equal(pad(‘foo’, 4), ‘0foo’); }); }); Install a bunch of crap: $ npm install babel-istanbul babel-cli babel-preset-es2015 mocha Create a .babelrc: { “presets”: [“es2015”] } Run the tests: … Read more
The quick fix I said in my comment, using –watchAll instead, eg: react-scripts test –coverage –watchAll. Just for future reference, I think ideally we should be using –watch, which would only run on changed files, but it gave me the same trouble. I think it’s related to this issue ‘–coverage –watch’ should calculate coverage for … Read more
It works. (function(global) { var defineAsGlobal = true; /* istanbul ignore next */ if(typeof exports === ‘object’) { module.exports = lib; defineAsGlobal = false; } /* istanbul ignore next */ if(typeof modules === ‘object’ && typeof modules.define === ‘function’) { modules.define(‘lib’, function(provide) { provide(lib); }); defineAsGlobal = false; } /* istanbul ignore next */ if(typeof … Read more
A branch is where the runtime can choose whether it can take one path or another. Lets take the following example: if(a) { Foo(); } if(b) { Bar(); } Yay(); When reaching the first line, it can decide if it wants to go inside the body of the if(a)-statement. Also, it can decide not to … Read more
There are a number of coverage criteria, the main ones being: Function coverage Has each function (or subroutine) in the program been called? Statement coverage Has each statement in the program been executed? Branch coverage Has each branch (also called DD-path) of each control structure (such as in if and case statements) been executed? For … Read more