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This is a tiny library that adds .called and .calledWith assertions to
chai for use with
testdouble.js. These assertions
can be used as syntactic sugar over the testdouble.verify function. Here are
some examples:
Use
it("can tell you if a testdouble object was called",function(){vartd=testdouble.function();td();expect(td).to.have.been.called;// instead of `verify(td)`!});
or with arguments:
it("can tell you if a testdouble object was called a certain way",function(){vartd=testdouble.function();td("hi");expect(td).to.have.been.calledWith("hi");// instead of `verify(td("hi"))`!});
Setup
After installing the library with npm install --save-dev testdouble-chai,
here's how to get chai to know about testdouble-chai:
// at the top of a test file or in a test helpervartd=require("testdouble");varchai=require("chai");vartdChai=require("testdouble-chai");chai.use(tdChai(td));// make sure to call tdChai with td to inject the dependency
And you should be good to go! Check out test/testdouble-chai_test.js for an
exhaustive description of how this library behaves.