sinon-chai は、Sinon.js のスパイやスタブの検証を Chai の表現力豊かな expect / should 構文で記述できるようにするライブラリです。
セットアップと初期化
var sinon = require('sinon')
require('chai').use(require('sinon-chai'))
Expect スタイルのアサーション
expect(spy).called
expect(spy).calledOnce
expect(spy).calledTwice
expect(spy).calledThrice
expect(spy).calledBefore(otherSpy)
expect(spy).calledAfter(otherSpy)
expect(spy).calledWithNew
expect(spy).alwaysCalledWithNew
expect(spy).calledOn(context)
expect(spy).alwaysCalledOn(context)
expect(spy).calledWith(...args)
expect(spy).alwaysCalledWith(...args)
expect(spy).calledWithExactly(...args)
expect(spy).alwaysCalledWithExactly(...args)
expect(spy).calledWithMatch(matcher)
expect(spy).alwaysCalledWithMatch(matcher)
expect(spy).returned(returnValue)
expect(spy).alwaysReturned(returnValue)
expect(spy).threw(errorOrType)
expect(spy).alwaysThrew(errorOrType)
Should スタイルのアサーション
spy.should.have.been.called
spy.should.have.been.calledOnce
spy.should.have.been.calledTwice
spy.should.have.been.calledThrice
spy1.should.have.been.calledBefore(spy2)
spy1.should.have.been.calledAfter(spy2)
spy.should.have.been.calledWithNew
spy.should.always.have.been.calledWithNew
spy.should.have.been.calledOn(context)
spy.should.always.have.been.calledOn(context)
spy.should.have.been.calledWith(...args)
spy.should.always.have.been.calledWith(...args)
spy.should.have.been.calledWithExactly(...args)
spy.should.always.have.been.calledWithExactly(...args)
spy.should.have.been.calledWithMatch(matcher)
spy.should.always.have.been.calledWithMatch(matcher)
spy.should.have.returned(returnVal)
spy.should.have.always.returned(returnVal)
spy.should.have.thrown(errorObjOrString)
spy.should.have.always.thrown(errorObjOrString)