91 lines
2.7 KiB
JavaScript
91 lines
2.7 KiB
JavaScript
describe("SpyRegistry", function() {
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describe("#spyOn", function() {
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it("checks for the existence of the object", function() {
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var spyRegistry = new j$.SpyRegistry();
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expect(function() {
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spyRegistry.spyOn(void 0, 'pants');
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}).toThrowError(/could not find an object/);
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});
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it("checks that a method name was passed", function() {
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var spyRegistry = new j$.SpyRegistry(),
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subject = {};
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expect(function() {
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spyRegistry.spyOn(subject);
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}).toThrowError(/No method name supplied/);
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});
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it("checks for the existence of the method", function() {
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var spyRegistry = new j$.SpyRegistry(),
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subject = {};
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expect(function() {
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spyRegistry.spyOn(subject, 'pants');
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}).toThrowError(/method does not exist/);
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});
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it("checks if it has already been spied upon", function() {
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var spies = [],
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spyRegistry = new j$.SpyRegistry({currentSpies: function() { return spies; }}),
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subject = { spiedFunc: function() {} };
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spyRegistry.spyOn(subject, 'spiedFunc');
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expect(function() {
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spyRegistry.spyOn(subject, 'spiedFunc');
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}).toThrowError(/has already been spied upon/);
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});
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it("checks if it can be spied upon", function() {
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var scope = {};
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function myFunc() {
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return 1;
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}
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Object.defineProperty(scope, 'myFunc', {
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get: function() {
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return myFunc;
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}
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});
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var spies = [],
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spyRegistry = new j$.SpyRegistry({currentSpies: function() { return spies; }}),
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subject = { spiedFunc: scope.myFunc };
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expect(function() {
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spyRegistry.spyOn(scope, 'myFunc');
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}).toThrowError(/is not declared writable or has no setter/);
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expect(function() {
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spyRegistry.spyOn(subject, 'spiedFunc');
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}).not.toThrowError(/is not declared writable or has no setter/);
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});
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it("overrides the method on the object and returns the spy", function() {
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var originalFunctionWasCalled = false,
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spyRegistry = new j$.SpyRegistry(),
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subject = { spiedFunc: function() { originalFunctionWasCalled = true; } };
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var spy = spyRegistry.spyOn(subject, 'spiedFunc');
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expect(subject.spiedFunc).toEqual(spy);
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});
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});
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describe("#clearSpies", function() {
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it("restores the original functions on the spied-upon objects", function() {
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var spies = [],
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spyRegistry = new j$.SpyRegistry({currentSpies: function() { return spies; }}),
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originalFunction = function() {},
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subject = { spiedFunc: originalFunction };
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spyRegistry.spyOn(subject, 'spiedFunc');
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spyRegistry.clearSpies();
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expect(subject.spiedFunc).toBe(originalFunction);
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});
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});
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});
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