2013-10-14 02:36:58 +00:00
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---
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title: Sinon-chai
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2015-11-24 05:02:17 +00:00
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category: JavaScript libraries
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2013-10-14 02:36:58 +00:00
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---
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2023-03-13 12:02:33 +00:00
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### About
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{: .-intro}
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2013-10-14 02:36:58 +00:00
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2023-03-13 12:02:33 +00:00
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* [Sinon-chai](https://github.com/domenic/sinon-chai)
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2014-10-04 15:43:09 +00:00
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### Initialization
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```js
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var sinon = require('sinon');
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require('chai').use(require('sinon-chai'));
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```
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2013-08-24 07:43:10 +00:00
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### Assert
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expect(spy).called
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expect(spy).calledOnce
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expect(spy).calledTwice
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expect(spy).calledThrice
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expect(spy).calledBefore
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expect(spy).calledAfter
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expect(spy).calledWithNew
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expect(spy).alwaysCalledWithNew
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expect(spy).calledOn
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expect(spy).alwaysCalledOn
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expect(spy).calledWith
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expect(spy).alwaysCalledWith
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expect(spy).calledWithExactly
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expect(spy).alwaysCalledWithExactly
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expect(spy).calledWithMatch
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expect(spy).alwaysCalledWithMatch
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expect(spy).returned
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expect(spy).alwaysReturned
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expect(spy).threw
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expect(spy).alwaysThrew
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### Should
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spy.should.have.been.called
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spy.should.have.been.calledOnce
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spy.should.have.been.calledTwice
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spy.should.have.been.calledThrice
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spy1.should.have.been.calledBefore(spy2)
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spy1.should.have.been.calledAfter(spy2)
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spy.should.have.been.calledWithNew
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spy.should.always.have.been.calledWithNew
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spy.should.have.been.calledOn(context)
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spy.should.always.have.been.calledOn(context)
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spy.should.have.been.calledWith(...args)
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spy.should.always.have.been.calledWith(...args)
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spy.should.always.have.been.calledWithExactly(...args)
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spy.should.always.have.been.calledWithExactly(...args)
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spy.should.have.been.calledWithMatch(...args)
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spy.should.always.have.been.calledWithMatch(...args)
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spy.should.have.returned(returnVal)
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spy.should.have.always.returned(returnVal)
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spy.should.have.thrown(errorObjOrErrorTypeStringOrNothing)
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spy.should.have.always.thrown(errorObjOrErrorTypeStringOrNothing)
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