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Support browsers that don't supply a Date.now()

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- install the mockDate by calling `mockDate` on `clock` instead of
  passing an argument to `clock.install()`

[Finishes #66606132] Closes #361
This commit is contained in:
Elana Koren and Gregg Van Hove
2014-02-27 11:55:25 -08:00
parent 627a262085
commit eebba2ecca
4 changed files with 158 additions and 99 deletions
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spec/core/MockDateSpec.js
+95 -55
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@@ -3,84 +3,126 @@ describe("FakeDate", function() {
var fakeGlobal = {},
mockDate = new j$.MockDate(fakeGlobal);
mockDate.install();
fakeGlobal.Date = jasmine.createSpy("Date");
mockDate.tick(0);
expect(fakeGlobal.Date).not.toHaveBeenCalled();
expect(function() {
mockDate.install();
mockDate.tick(0);
mockDate.uninstall();
}).not.toThrow();
});
it("does not replace global Date if it is not installed", function() {
var fakeDate = jasmine.createSpy("global Date"),
fakeGlobal = { Date: fakeDate },
it("replaces the global Date when it is installed", function() {
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {}
}
}),
fakeGlobal = { Date: globalDate },
mockDate = new j$.MockDate(fakeGlobal);
fakeDate.now = function(){};
expect(fakeDate).toEqual(fakeGlobal.Date);
expect(fakeGlobal.Date).toEqual(globalDate);
mockDate.install();
expect(fakeDate).not.toEqual(fakeGlobal.Date);
expect(fakeGlobal.Date).not.toEqual(globalDate);
});
it("replaces the global Date on uninstall", function() {
var fakeDate = jasmine.createSpy("global Date"),
fakeGlobal = { Date: fakeDate },
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {}
}
}),
fakeGlobal = { Date: globalDate },
mockDate = new j$.MockDate(fakeGlobal);
fakeDate.now = function(){};
mockDate.install();
mockDate.uninstall();
expect(fakeDate).toEqual(fakeGlobal.Date);
expect(fakeGlobal.Date).toEqual(globalDate);
});
it("takes the current time as the base when installing without parameters", function() {
var fakeDate = jasmine.createSpy("global Date"),
fakeGlobal = { Date: fakeDate },
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {
return 1000;
}
}
}),
fakeGlobal = { Date: globalDate },
mockDate = new j$.MockDate(fakeGlobal);
fakeGlobal.Date.prototype.getTime = function() {
return 1000;
};
fakeDate.now = function(){ return 1000; };
mockDate.install();
expect(new fakeGlobal.Date().getTime()).toEqual(1000);
globalDate.calls.reset();
new fakeGlobal.Date();
expect(globalDate).toHaveBeenCalledWith(1000);
});
it("can accept a date as time base when installing", function() {
var fakeGlobal = { Date: Date },
mockDate = new j$.MockDate(fakeGlobal),
baseDate = new Date(2013, 9, 23);
baseDate = new Date();
spyOn(baseDate, 'getTime').and.returnValue(123);
mockDate.install(baseDate);
expect(new fakeGlobal.Date().getTime()).toEqual(baseDate.getTime());
expect(new fakeGlobal.Date().getTime()).toEqual(123);
});
it("makes real dates", function() {
var fakeGlobal = { Date: Date },
mockDate = new j$.MockDate(fakeGlobal);
mockDate.install();
expect(new fakeGlobal.Date()).toEqual(jasmine.any(Date));
});
it("fakes current time when using Date.now()", function() {
var fakeGlobal = { Date: Date },
mockDate = new j$.MockDate(fakeGlobal),
baseDate = new Date(2013, 9, 23);
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {
return 1000;
}
}
}),
fakeGlobal = { Date: globalDate };
mockDate.install(baseDate);
globalDate.now = function() {};
var mockDate = new j$.MockDate(fakeGlobal);
expect(fakeGlobal.Date.now()).toEqual(baseDate.getTime());
mockDate.install();
expect(fakeGlobal.Date.now()).toEqual(1000);
});
it("does not stub Date.now() if it doesn't already exist", function() {
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {
return 1000;
}
}
}),
fakeGlobal = { Date: globalDate },
mockDate = new j$.MockDate(fakeGlobal);
mockDate.install();
expect(fakeGlobal.Date.now).toThrowError("Browser does not support Date.now()");
});
it("makes time passes using tick", function() {
var fakeDate = jasmine.createSpy("global Date"),
fakeGlobal = { Date: fakeDate },
mockDate = new j$.MockDate(fakeGlobal);
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {
return 1000;
}
}
}),
fakeGlobal = { Date: globalDate };
fakeDate.now = function(){ return 1000; };
globalDate.now = function() {};
var mockDate = new j$.MockDate(fakeGlobal);
mockDate.install();
@@ -94,11 +136,17 @@ describe("FakeDate", function() {
});
it("allows to increase 0 milliseconds using tick", function() {
var fakeDate = jasmine.createSpy("global Date"),
fakeGlobal = { Date: fakeDate },
mockDate = new j$.MockDate(fakeGlobal);
var globalDate = jasmine.createSpy("global Date").and.callFake(function() {
return {
getTime: function() {
return 1000;
}
}
}),
fakeGlobal = { Date: globalDate };
fakeDate.now = function(){ return 1000; };
globalDate.now = function() {};
var mockDate = new j$.MockDate(fakeGlobal);
mockDate.install();
@@ -109,7 +157,7 @@ describe("FakeDate", function() {
expect(fakeGlobal.Date.now()).toEqual(1000);
});
it("allows to create a Date in a different time than now", function() {
it("allows to create a Date in a different time than the mocked time", function() {
var fakeGlobal = { Date: Date },
mockDate = new j$.MockDate(fakeGlobal),
baseDate = new Date(2013, 9, 23, 0, 0, 0, 0);
@@ -117,22 +165,14 @@ describe("FakeDate", function() {
mockDate.install(baseDate);
var otherDate = new fakeGlobal.Date(2013, 9, 23, 0, 0, 1, 0);
mockDate.tick(1000);
expect(fakeGlobal.Date.now()).toEqual(otherDate.getTime());
expect(otherDate.getTime()).not.toEqual(baseDate.getTime());
});
it("copies all Date properties to the mocked date", function() {
var fakeGlobal = { Date: Date },
mockDate = new j$.MockDate(fakeGlobal),
baseDate = new Date(2013, 9, 23, 0, 0, 0, 0);
mockDate = new j$.MockDate(fakeGlobal);
mockDate.install(baseDate);
var otherDate = new fakeGlobal.Date();
expect(otherDate).toEqual(jasmine.any(Date));
mockDate.install();
expect(fakeGlobal.Date.UTC(2013, 9, 23)).toEqual(Date.UTC(2013, 9, 23));
});