sinon: update

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Rico Sta. Cruz 2017-10-27 12:54:28 +08:00
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---
title: Sinon
category: JavaScript libraries
layout: default-ad
layout: 2017/sheet
weight: -1
updated: 2017-10-27
---
### Creating spies
fn = sinon.spy();
```js
fn = sinon.spy()
fn()
```
fn();
fn.calledOnce == true
fn.callCount == 1
```js
fn.calledOnce == true
fn.callCount == 1
```
### Spying/stubbing
sinon.spy($, 'ajax')
```js
sinon.spy($, 'ajax')
```
$.ajax();
$.ajax.calledOnce == true
```js
$.ajax();
$.ajax.calledOnce == true
```
sinon.stub($, 'ajax', function () { ... }); // function optional
```js
sinon.stub($, 'ajax', function () { ... }) // function optional
```
$.ajax.calledWithMatch({ url: '/x' });
$.ajax.restore();
```js
$.ajax.calledWithMatch({ url: '/x' })
$.ajax.restore()
```
### Spy/stub properties
spy
.args //=> [ [..], [..] ] one per call
.thisValues
.returnValues
```js
spy
.args //=> [ [..], [..] ] one per call
.thisValues
.returnValues
```
.called //=> true
.notCalled
.callCount
.calledOnce
.calledTwice
.calledThrice
```js
.called //=> true
.notCalled
.callCount
.calledOnce
.calledTwice
.calledThrice
```
.getCalls() //=> Array
.getCall(0)
.firstCall
```js
.getCalls() //=> Array
.getCall(0)
.firstCall
```
### Anonymous stub
stub = sinon.stub().returns(42);
stub() == 42
```js
stub = sinon.stub().returns(42)
stub() == 42
```
stub
.withArgs(42).returns(1);
.withArgs(43).throws("TypeError");
```js
stub
.withArgs(42).returns(1)
.withArgs(43).throws("TypeError")
```
stub
.returns(1);
.throws("TypeError");
.returnsArg(0); // Return 1st argument
.callsArg(0);
```js
stub
.returns(1)
.throws("TypeError")
.returnsArg(0) // Return 1st argument
.callsArg(0)
```
### Fake date
sinon.useFakeTimers(+new Date(2011,9,1));
```js
sinon.useFakeTimers(+new Date(2011,9,1));
```
### Fake server
server = sinon.fakeServer.create();
```js
server = sinon.fakeServer.create()
```
$.get('/file.json', ...);
server.requests[0].respond(
200,
{ "Content-Type": "application/json" },
JSON.stringify([{ id: 1, text: "Provide examples", done: true }])
);
```js
$.get('/file.json', ...)
server.requests[0].respond(
200,
{ 'Content-Type': 'application/json' },
JSON.stringify({ hello: 'world' })
)
```
server.restore();
```js
server.restore()
```
### Fake XHR
xhr = sinon.useFakeXMLHttpRequest();
xhr.restore();
```js
xhr = sinon.useFakeXMLHttpRequest()
xhr.restore()
```
### Sandbox
beforeEach(function() {
global.sinon = require('sinon').sandbox.create();
});
```js
beforeEach(function() {
global.sinon = require('sinon').sandbox.create()
})
```
afterEach(function() {
global.sinon.restore();
});
```js
afterEach(function() {
global.sinon.restore()
})
```