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How to use isNonExistentProperty method in sinon

Best JavaScript code snippet using sinon

stub.js

Source:stub.js

...55    if (isEsModule(object)) {56        throw new TypeError("ES Modules cannot be stubbed");57    }58    throwOnFalsyObject.apply(null, arguments);59    if (isNonExistentProperty(object, property)) {60        throw new TypeError("Cannot stub non-existent property " + valueToString(property));61    }62    var actualDescriptor = getPropertyDescriptor(object, property);63    var isObjectOrFunction = typeof object === "object" || typeof object === "function";64    var isStubbingEntireObject = typeof property === "undefined" && isObjectOrFunction;65    var isCreatingNewStub = !object && typeof property === "undefined";66    var isStubbingNonFuncProperty =67        isObjectOrFunction &&68        typeof property !== "undefined" &&69        (typeof actualDescriptor === "undefined" || typeof actualDescriptor.value !== "function");70    if (isStubbingEntireObject) {71        return walkObject(stub, object);72    }73    if (isCreatingNewStub) {...

is-non-existent-property.js

Source:is-non-existent-property.js

...3 * @param {*} object4 * @param {String} property5 * @returns whether a prop exists in the prototype chain6 */7function isNonExistentProperty(object, property) {8    return object && typeof property !== "undefined" && !(property in object);9}...

Using AI Code Generation

1var chai = require('chai');2var sinon = require('sinon');3var sinonChai = require('sinon-chai');4chai.use(sinonChai);5chai.should();6var obj = {7    method: function () {8        return 'test';9    }10};11describe('sinon-chai', function () {12    it('should work', function () {13        var spy = sinon.spy(obj, 'method');14        obj.method();15        spy.should.have.been.calledOnce;16        spy.should.have.been.calledWith();17        spy.should.have.been.calledOn(obj);18        spy.should.have.returned('test');19        spy.should.have.been.calledBefore(sinon.stub());20        spy.should.have.been.calledAfter(sinon.stub());21        spy.should.have.been.calledImmediatelyBefore(sinon.stub());22        spy.should.have.been.calledImmediatelyAfter(sinon.stub());23        spy.should.have.been.calledWithNew();24        spy.should.have.been.calledWithExactly();25        spy.should.have.been.calledWithMatch();26        spy.should.have.been.calledWithExactlyMatch();27        spy.should.have.been.calledWithExactlyMatch();28        spy.should.have.been.calledOnceWithExactly();29        spy.should.have.been.calledOnceWithMatch();30        spy.should.have.been.calledOnceWithExactlyMatch();31        spy.should.have.been.calledTwice();32        spy.should.have.been.calledThrice();33        spy.should.have.been.calledOn(sinon.stub());

Using AI Code Generation

1var obj = {foo: 'bar'};2assert.isNonExistentProperty(obj, 'foo');3assert.isNonExistentProperty(obj, 'bar');4assert.isNonExistentProperty(obj, 'baz');5var obj = {foo: 'bar'};6assert.isNonExistentProperty(obj, 'foo');7assert.isNonExistentProperty(obj, 'bar');8assert.isNonExistentProperty(obj, 'baz');9var obj = {foo: 'bar'};10assert.isNonExistentProperty(obj, 'foo');11assert.isNonExistentProperty(obj, 'bar');12assert.isNonExistentProperty(obj, 'baz');13var obj = {foo: 'bar'};14assert.isNonExistentProperty(obj, 'foo');15assert.isNonExistentProperty(obj, 'bar');16assert.isNonExistentProperty(obj, 'baz');17var obj = {foo: 'bar'};18assert.isNonExistentProperty(obj, 'foo');19assert.isNonExistentProperty(obj, 'bar');20assert.isNonExistentProperty(obj, 'baz');21var obj = {foo: 'bar'};22assert.isNonExistentProperty(obj, 'foo');23assert.isNonExistentProperty(obj, 'bar');24assert.isNonExistentProperty(obj, 'baz');25var obj = {foo: 'bar'};26assert.isNonExistentProperty(obj, 'foo');27assert.isNonExistentProperty(obj, 'bar');28assert.isNonExistentProperty(obj, 'baz');29var obj = {foo: 'bar'};30assert.isNonExistentProperty(obj, 'foo');31assert.isNonExistentProperty(obj, 'bar');32assert.isNonExistentProperty(obj, 'baz');

Using AI Code Generation

1var sinon = require('sinon');2var obj = {3  method: function() {}4};5sinon.stub(obj, "method");6delete stub.isSinonProxy;7function stub(object, property, func) {8    var wrapper = function () {9        return wrapper.invoke(func, this, arguments);10    };11    if (typeof property !== "undefined" && typeof object !== "undefined") {12        var method = object[property];13        wrapper.displayName = property;14        wrapper.toString = function toString() {15            return method.toString();16        };17        wrapper.restore = function restore() {18            object[property] = method;19        };20        wrapper.invoke = function invoke(func, thisValue, args) {21            return (func || method).apply(thisValue, args);22        };23        wrapper.property = property;24        wrapper.object = object;25        object[property] = wrapper;26    } else {27        wrapper.restore = function restore() {28            throw new Error("Cannot restore unstubbed function");29        };30        wrapper.invoke = function invoke(func, thisValue, args) {31            return (func || function () {}).apply(thisValue, args);32        };33    }34    delete wrapper.isSinonProxy;35    return wrapper;36}37function stub(object, property, func) {38    var wrapper = function () {39        return wrapper.invoke(func, this, arguments);40    };41    if (typeof property !== "undefined" && typeof object !== "undefined") {42        var method = object[property];43        wrapper.displayName = property;44        wrapper.toString = function toString() {45            return method.toString();46        };47        wrapper.restore = function restore() {

Using AI Code Generation

1var sinon = require('sinon');2var assert = require('assert');3var obj = { foo: 'bar' };4var spy = sinon.spy(obj, 'foo');5assert.ok(spy.isSinonProxy);6assert.ok(spy.isNonExistentProperty);7spy.restore();8assert.ok(!spy.isSinonProxy);9assert.ok(!spy.isNonExistentProperty);

Using AI Code Generation

1var sinon = require('sinon');2var obj = { foo: 'bar' };3var spy = sinon.spy();4obj.baz = spy;5obj.baz();6console.log(spy.always

Using AI Code Generation

1var sinon = require('sinon');2var obj = {3    method: function() {}4};5sinon.stub(obj, "method").returns(42);6sinon.stub(obj, "method").returns(43);7sinon.stub(obj, "method").returns(44);8var stub = sinon.stub(obj, "method");9stub.returns(42);10stub.returns(43);11stub.returns(44);12var sinon = require('sinon');13var obj = {14    method: function() {}15};16sinon.stub(obj, "method").returns(42);17sinon.stub(obj, "method").returns(43);18sinon.stub(obj, "method").returns(44);19var stub = sinon.stub(obj, "method");20stub.returns(42);21stub.returns(43);22stub.returns(44);23var obj = {24    method: function() {}25};26sinon.stub(obj, "method").returns(42);27sinon.stub(obj, "method").returns(43);28sinon.stub(obj, "method").returns(44);29var stub = sinon.stub(obj, "method");30stub.returns(42);31stub.returns(43);32stub.returns(44);33var obj = {34    method: function() {}35};36sinon.stub(obj, "method").returns(42);37sinon.stub(obj, "method").returns(43);38sinon.stub(obj, "method").returns(44);39var stub = sinon.stub(obj, "method");40stub.returns(42);41stub.returns(43);42stub.returns(44);

Using AI Code Generation

1var sinon = require('sinon');2var myFunc = function(){3  return 'Hello World';4}5var spy = sinon.spy(myFunc);6spy();7console.log(spy.calledWith('Hello World',

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