You have to pass a function to expect. Like this: expect(model.get.bind(model, ‘z’)).to.throw(‘Property does not exist in model schema.’); expect(model.get.bind(model, ‘z’)).to.throw(new Error(‘Property does not exist in model schema.’)); The way you are doing it, you are passing to expect the result of calling model.get(‘z’). But to test whether something is thrown, you have to pass a … Read more
You need an additional library for code coverage, and you are going to be blown away by how powerful and easy istanbul is. Try the following, after you get your mocha tests to pass: npm install nyc Now, simply place the command nyc in front of your existing test command, for example: { “scripts”: { … Read more
Try using mocha’s –grep option: -g, –grep <pattern> only run tests matching <pattern> You can use any valid JavaScript regex as <pattern>. For instance, if we have test/mytest.js: it(‘logs a’, function(done) { console.log(‘a’); done(); }); it(‘logs b’, function(done) { console.log(‘b’); done(); }); Then: $ mocha -g ‘logs a’ To run a single test. Note that … Read more
Here you go: http://mochajs.org/#test-level it(‘accesses the network’, function(done){ this.timeout(500); [Put network code here, with done() in the callback] }) For arrow function use as follows: it(‘accesses the network’, (done) => { [Put network code here, with done() in the callback] }).timeout(500);