describe(“Clock”, function() {

it("does not replace setTimeout until it is installed", function() {
  var fakeSetTimeout = jasmine.createSpy("global setTimeout"),
    fakeGlobal = { setTimeout: fakeSetTimeout },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["scheduleFunction"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  fakeGlobal.setTimeout(delayedFn, 0);

  expect(fakeSetTimeout).toHaveBeenCalledWith(delayedFn, 0);
  expect(delayedFunctionScheduler.scheduleFunction).not.toHaveBeenCalled();

  fakeSetTimeout.calls.reset();

  clock.install();
  fakeGlobal.setTimeout(delayedFn, 0);

  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalled();
  expect(fakeSetTimeout).not.toHaveBeenCalled();
});

it("does not replace clearTimeout until it is installed", function() {
  var fakeClearTimeout = jasmine.createSpy("global cleartimeout"),
    fakeGlobal = { clearTimeout: fakeClearTimeout },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["removeFunctionWithId"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  fakeGlobal.clearTimeout("foo");

  expect(fakeClearTimeout).toHaveBeenCalledWith("foo");
  expect(delayedFunctionScheduler.removeFunctionWithId).not.toHaveBeenCalled();

  fakeClearTimeout.calls.reset();

  clock.install();
  fakeGlobal.clearTimeout("foo");

  expect(delayedFunctionScheduler.removeFunctionWithId).toHaveBeenCalled();
  expect(fakeClearTimeout).not.toHaveBeenCalled();
});

it("does not replace setInterval until it is installed", function() {
  var fakeSetInterval = jasmine.createSpy("global setInterval"),
    fakeGlobal = { setInterval: fakeSetInterval },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["scheduleFunction"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  fakeGlobal.setInterval(delayedFn, 0);

  expect(fakeSetInterval).toHaveBeenCalledWith(delayedFn, 0);
  expect(delayedFunctionScheduler.scheduleFunction).not.toHaveBeenCalled();

  fakeSetInterval.calls.reset();

  clock.install();
  fakeGlobal.setInterval(delayedFn, 0);

  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalled();
  expect(fakeSetInterval).not.toHaveBeenCalled();
});

it("does not replace clearInterval until it is installed", function() {
  var fakeClearInterval = jasmine.createSpy("global clearinterval"),
    fakeGlobal = { clearInterval: fakeClearInterval },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["removeFunctionWithId"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  fakeGlobal.clearInterval("foo");

  expect(fakeClearInterval).toHaveBeenCalledWith("foo");
  expect(delayedFunctionScheduler.removeFunctionWithId).not.toHaveBeenCalled();

  fakeClearInterval.calls.reset();

  clock.install();
  fakeGlobal.clearInterval("foo");

  expect(delayedFunctionScheduler.removeFunctionWithId).toHaveBeenCalled();
  expect(fakeClearInterval).not.toHaveBeenCalled();
});

it("does not install if the current setTimeout is not the original function on the global", function() {
  var originalFakeSetTimeout = function() {},
    replacedSetTimeout = function() {},
    fakeGlobal = { setTimeout: originalFakeSetTimeout },
    delayedFunctionSchedulerFactory = jasmine.createSpy('delayedFunctionSchedulerFactory'),
    mockDate = {},
    clock = new j$.Clock(fakeGlobal, delayedFunctionSchedulerFactory, mockDate);

  fakeGlobal.setTimeout = replacedSetTimeout;

  expect(function() {
    clock.install();
  }).toThrowError(/unable to install/);

  expect(delayedFunctionSchedulerFactory).not.toHaveBeenCalled();
  expect(fakeGlobal.setTimeout).toBe(replacedSetTimeout);
});

it("does not install if the current clearTimeout is not the original function on the global", function() {
  var originalFakeClearTimeout = function() {},
    replacedClearTimeout = function() {},
    fakeGlobal = { clearTimeout: originalFakeClearTimeout },
    delayedFunctionSchedulerFactory = jasmine.createSpy('delayedFunctionSchedulerFactory'),
    mockDate = {},
    clock = new j$.Clock(fakeGlobal, delayedFunctionSchedulerFactory, mockDate);

  fakeGlobal.clearTimeout = replacedClearTimeout;

  expect(function() {
    clock.install();
  }).toThrowError(/unable to install/);

  expect(delayedFunctionSchedulerFactory).not.toHaveBeenCalled();
  expect(fakeGlobal.clearTimeout).toBe(replacedClearTimeout);
});

it("does not install if the current setInterval is not the original function on the global", function() {
  var originalFakeSetInterval = function() {},
    replacedSetInterval = function() {},
    fakeGlobal = { setInterval: originalFakeSetInterval },
    delayedFunctionSchedulerFactory = jasmine.createSpy('delayedFunctionSchedulerFactory'),
    mockDate = {},
    clock = new j$.Clock(fakeGlobal, delayedFunctionSchedulerFactory, mockDate);

  fakeGlobal.setInterval = replacedSetInterval;

  expect(function() {
    clock.install();
  }).toThrowError(/unable to install/);

  expect(delayedFunctionSchedulerFactory).not.toHaveBeenCalled();
  expect(fakeGlobal.setInterval).toBe(replacedSetInterval);
});

it("does not install if the current clearInterval is not the original function on the global", function() {
  var originalFakeClearInterval = function() {},
    replacedClearInterval = function() {},
    fakeGlobal = { clearInterval: originalFakeClearInterval },
    delayedFunctionSchedulerFactory = jasmine.createSpy('delayedFunctionSchedulerFactory'),
    mockDate = {},
    clock = new j$.Clock(fakeGlobal, delayedFunctionSchedulerFactory, mockDate);

  fakeGlobal.clearInterval = replacedClearInterval;

  expect(function() {
    clock.install();
  }).toThrowError(/unable to install/);

  expect(delayedFunctionSchedulerFactory).not.toHaveBeenCalled();
  expect(fakeGlobal.clearInterval).toBe(replacedClearInterval);
});

it("replaces the global timer functions on uninstall", function() {
  var fakeSetTimeout = jasmine.createSpy("global setTimeout"),
    fakeClearTimeout = jasmine.createSpy("global clearTimeout"),
    fakeSetInterval = jasmine.createSpy("global setInterval"),
    fakeClearInterval = jasmine.createSpy("global clearInterval"),
    fakeGlobal = {
      setTimeout: fakeSetTimeout,
      clearTimeout: fakeClearTimeout,
      setInterval: fakeSetInterval,
      clearInterval: fakeClearInterval
    },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["scheduleFunction", "reset"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();
  clock.uninstall();
  fakeGlobal.setTimeout(delayedFn, 0);
  fakeGlobal.clearTimeout("foo");
  fakeGlobal.setInterval(delayedFn, 10);
  fakeGlobal.clearInterval("bar");

  expect(fakeSetTimeout).toHaveBeenCalledWith(delayedFn, 0);
  expect(fakeClearTimeout).toHaveBeenCalledWith("foo");
  expect(fakeSetInterval).toHaveBeenCalledWith(delayedFn, 10);
  expect(fakeClearInterval).toHaveBeenCalledWith("bar");
  expect(delayedFunctionScheduler.scheduleFunction).not.toHaveBeenCalled();
});

it("can be installed for the duration of a passed in function and uninstalled when done", function() {
  var fakeSetTimeout = jasmine.createSpy("global setTimeout"),
    fakeClearTimeout = jasmine.createSpy("global clearTimeout"),
    fakeSetInterval = jasmine.createSpy("global setInterval"),
    fakeClearInterval = jasmine.createSpy("global clearInterval"),
    fakeGlobal = {
      setTimeout: fakeSetTimeout,
      clearTimeout: fakeClearTimeout,
      setInterval: fakeSetInterval,
      clearInterval: fakeClearInterval
    },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["scheduleFunction", "reset", "removeFunctionWithId"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate),
    passedFunctionCalled = false;

  clock.withMock(function() {
    fakeGlobal.setTimeout(delayedFn, 0);
    fakeGlobal.clearTimeout("foo");
    fakeGlobal.setInterval(delayedFn, 10);
    fakeGlobal.clearInterval("bar");
    passedFunctionCalled = true;
  });

  expect(passedFunctionCalled).toBe(true);

  expect(fakeSetTimeout).not.toHaveBeenCalled();
  expect(fakeClearTimeout).not.toHaveBeenCalled();
  expect(fakeSetInterval).not.toHaveBeenCalled();
  expect(fakeClearInterval).not.toHaveBeenCalled();
  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalled();

  delayedFunctionScheduler.scheduleFunction.calls.reset();

  fakeGlobal.setTimeout(delayedFn, 0);
  fakeGlobal.clearTimeout("foo");
  fakeGlobal.setInterval(delayedFn, 10);
  fakeGlobal.clearInterval("bar");

  expect(fakeSetTimeout).toHaveBeenCalledWith(delayedFn, 0);
  expect(fakeClearTimeout).toHaveBeenCalledWith("foo");
  expect(fakeSetInterval).toHaveBeenCalledWith(delayedFn, 10);
  expect(fakeClearInterval).toHaveBeenCalledWith("bar");
  expect(delayedFunctionScheduler.scheduleFunction).not.toHaveBeenCalled();
});

it("can be installed for the duration of a passed in function and uninstalled if an error is thrown", function() {
  var fakeSetTimeout = jasmine.createSpy("global setTimeout"),
    fakeClearTimeout = jasmine.createSpy("global clearTimeout"),
    fakeSetInterval = jasmine.createSpy("global setInterval"),
    fakeClearInterval = jasmine.createSpy("global clearInterval"),
    fakeGlobal = {
      setTimeout: fakeSetTimeout,
      clearTimeout: fakeClearTimeout,
      setInterval: fakeSetInterval,
      clearInterval: fakeClearInterval
    },
    delayedFunctionScheduler = jasmine.createSpyObj("delayedFunctionScheduler", ["scheduleFunction", "reset", "removeFunctionWithId"]),
    delayedFn = jasmine.createSpy("delayedFn"),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate),
    passedFunctionCalled = false;

  expect(function() {
    clock.withMock(function() {
      fakeGlobal.setTimeout(delayedFn, 0);
      fakeGlobal.clearTimeout("foo");
      fakeGlobal.setInterval(delayedFn, 10);
      fakeGlobal.clearInterval("bar");
      passedFunctionCalled = true;
      throw 'oops';
    });
  }).toThrow('oops');

  expect(passedFunctionCalled).toBe(true);

  expect(fakeSetTimeout).not.toHaveBeenCalled();
  expect(fakeClearTimeout).not.toHaveBeenCalled();
  expect(fakeSetInterval).not.toHaveBeenCalled();
  expect(fakeClearInterval).not.toHaveBeenCalled();
  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalled();

  delayedFunctionScheduler.scheduleFunction.calls.reset();

  fakeGlobal.setTimeout(delayedFn, 0);
  fakeGlobal.clearTimeout("foo");
  fakeGlobal.setInterval(delayedFn, 10);
  fakeGlobal.clearInterval("bar");

  expect(fakeSetTimeout).toHaveBeenCalledWith(delayedFn, 0);
  expect(fakeClearTimeout).toHaveBeenCalledWith("foo");
  expect(fakeSetInterval).toHaveBeenCalledWith(delayedFn, 10);
  expect(fakeClearInterval).toHaveBeenCalledWith("bar");
  expect(delayedFunctionScheduler.scheduleFunction).not.toHaveBeenCalled();
});

it("schedules the delayed function (via setTimeout) with the fake timer", function() {
  var fakeSetTimeout = jasmine.createSpy('setTimeout'),
    scheduleFunction = jasmine.createSpy('scheduleFunction'),
    delayedFunctionScheduler = { scheduleFunction: scheduleFunction },
    fakeGlobal = { setTimeout: fakeSetTimeout },
    delayedFn = jasmine.createSpy('delayedFn'),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();
  clock.setTimeout(delayedFn, 0, 'a', 'b');

  expect(fakeSetTimeout).not.toHaveBeenCalled();
  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalledWith(delayedFn, 0, ['a', 'b']);
});

it("returns an id for the delayed function", function() {
  var fakeSetTimeout = jasmine.createSpy('setTimeout'),
    scheduleId = 123,
    scheduleFunction = jasmine.createSpy('scheduleFunction').and.returnValue(scheduleId),
    delayedFunctionScheduler = {scheduleFunction: scheduleFunction},
    fakeGlobal = { setTimeout: fakeSetTimeout },
    delayedFn = jasmine.createSpy('delayedFn'),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate),
    timeoutId;

  clock.install();
  timeoutId = clock.setTimeout(delayedFn, 0);

  expect(timeoutId).toEqual(123);
});

it("clears the scheduled function with the scheduler", function() {
  var fakeClearTimeout = jasmine.createSpy('clearTimeout'),
    delayedFunctionScheduler = jasmine.createSpyObj('delayedFunctionScheduler', ['removeFunctionWithId']),
    fakeGlobal = { setTimeout: fakeClearTimeout },
    delayedFn = jasmine.createSpy('delayedFn'),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();
  clock.clearTimeout(123);

  expect(fakeClearTimeout).not.toHaveBeenCalled();
  expect(delayedFunctionScheduler.removeFunctionWithId).toHaveBeenCalledWith(123);
});

it("schedules the delayed function with the fake timer", function() {
  var fakeSetInterval = jasmine.createSpy('setInterval'),
    scheduleFunction = jasmine.createSpy('scheduleFunction'),
    delayedFunctionScheduler = {scheduleFunction: scheduleFunction},
    fakeGlobal = { setInterval: fakeSetInterval },
    delayedFn = jasmine.createSpy('delayedFn'),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();
  clock.setInterval(delayedFn, 0, 'a', 'b');

  expect(fakeSetInterval).not.toHaveBeenCalled();
  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalledWith(delayedFn, 0, ['a', 'b'], true);
});

it("returns an id for the delayed function", function() {
  var fakeSetInterval = jasmine.createSpy('setInterval'),
    scheduleId = 123,
    scheduleFunction = jasmine.createSpy('scheduleFunction').and.returnValue(scheduleId),
    delayedFunctionScheduler = {scheduleFunction: scheduleFunction},
    fakeGlobal = { setInterval: fakeSetInterval },
    delayedFn = jasmine.createSpy('delayedFn'),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate),
    intervalId;

  clock.install();
  intervalId = clock.setInterval(delayedFn, 0);

  expect(intervalId).toEqual(123);
});

it("clears the scheduled function with the scheduler", function() {
  var clearInterval = jasmine.createSpy('clearInterval'),
    delayedFunctionScheduler = jasmine.createSpyObj('delayedFunctionScheduler', ['removeFunctionWithId']),
    fakeGlobal = { setInterval: clearInterval },
    delayedFn = jasmine.createSpy('delayedFn'),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();
  clock.clearInterval(123);

  expect(clearInterval).not.toHaveBeenCalled();
  expect(delayedFunctionScheduler.removeFunctionWithId).toHaveBeenCalledWith(123);
});

it("gives you a friendly reminder if the Clock is not installed and you tick", function() {
  var clock = new j$.Clock({}, jasmine.createSpyObj('delayedFunctionScheduler', ['tick']));
  expect(function() {
    clock.tick(50);
  }).toThrow();
});

it("on IE < 9, fails if extra args are passed to fake clock", function() {
  //fail, because this would break in IE9.
  var fakeSetTimeout = jasmine.createSpy('setTimeout'),
    fakeSetInterval = jasmine.createSpy('setInterval'),
    delayedFunctionScheduler = jasmine.createSpyObj('delayedFunctionScheduler', ['scheduleFunction']),
    fn = jasmine.createSpy('fn'),
    fakeGlobal = {
      setTimeout: fakeSetTimeout,
      setInterval: fakeSetInterval
    },
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock(fakeGlobal, function () { return delayedFunctionScheduler; }, mockDate);

  fakeSetTimeout.apply = null;
  fakeSetInterval.apply = null;

  clock.install();

  clock.setTimeout(fn, 0);
  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalledWith(fn, 0, []);
  expect(function() {
    clock.setTimeout(fn, 0, 'extra');
  }).toThrow();

  clock.setInterval(fn, 0);
  expect(delayedFunctionScheduler.scheduleFunction).toHaveBeenCalledWith(fn, 0, [], true);
  expect(function() {
    clock.setInterval(fn, 0, 'extra');
  }).toThrow();
});

});

describe(“Clock (acceptance)”, function() {

it("can run setTimeouts/setIntervals synchronously", function() {
  var delayedFn1 = jasmine.createSpy('delayedFn1'),
    delayedFn2 = jasmine.createSpy('delayedFn2'),
    delayedFn3 = jasmine.createSpy('delayedFn3'),
    recurring1 = jasmine.createSpy('recurring1'),
    delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock({setTimeout: setTimeout}, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();

  clock.setTimeout(delayedFn1, 0);
  var intervalId = clock.setInterval(recurring1, 50);
  clock.setTimeout(delayedFn2, 100);
  clock.setTimeout(delayedFn3, 200);

  expect(delayedFn1).not.toHaveBeenCalled();
  expect(delayedFn2).not.toHaveBeenCalled();
  expect(delayedFn3).not.toHaveBeenCalled();

  clock.tick(0);

  expect(delayedFn1).toHaveBeenCalled();
  expect(delayedFn2).not.toHaveBeenCalled();
  expect(delayedFn3).not.toHaveBeenCalled();

  clock.tick(50);

  expect(recurring1).toHaveBeenCalled();
  expect(recurring1.calls.count()).toBe(1);
  expect(delayedFn2).not.toHaveBeenCalled();
  expect(delayedFn3).not.toHaveBeenCalled();

  clock.tick(50);

  expect(recurring1.calls.count()).toBe(2);
  expect(delayedFn2).toHaveBeenCalled();
  expect(delayedFn3).not.toHaveBeenCalled();

  clock.tick(100);

  expect(recurring1.calls.count()).toBe(4);
  expect(delayedFn3).toHaveBeenCalled();

  clock.clearInterval(intervalId);
  clock.tick(50);

  expect(recurring1.calls.count()).toBe(4);
});

it("can clear a previously set timeout", function() {
  var clearedFn = jasmine.createSpy('clearedFn'),
    delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock({setTimeout: function() {}}, function () { return delayedFunctionScheduler; }, mockDate),
    timeoutId;

  clock.install();

  timeoutId = clock.setTimeout(clearedFn, 100);
  expect(clearedFn).not.toHaveBeenCalled();

  clock.clearTimeout(timeoutId);
  clock.tick(100);

  expect(clearedFn).not.toHaveBeenCalled();
});

it("can clear a previously set interval using that interval's handler", function() {
  var spy = jasmine.createSpy('spy'),
    delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock({setInterval: function() {}}, function () { return delayedFunctionScheduler; }, mockDate),
    intervalId;

  clock.install();

  intervalId = clock.setInterval(function() {
    spy();
    clock.clearInterval(intervalId);
  }, 100);
  clock.tick(200);

  expect(spy.calls.count()).toEqual(1);
});

it("correctly schedules functions after the Clock has advanced", function() {
  var delayedFn1 = jasmine.createSpy('delayedFn1'),
    delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
    clock = new j$.Clock({setTimeout: function() {}}, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();

  clock.tick(100);
  clock.setTimeout(delayedFn1, 10, ['some', 'arg']);
  clock.tick(5);
  expect(delayedFn1).not.toHaveBeenCalled();
  clock.tick(5);
  expect(delayedFn1).toHaveBeenCalled();
});

it("correctly schedules functions while the Clock is advancing", function() {
  var delayedFn1 = jasmine.createSpy('delayedFn1'),
      delayedFn2 = jasmine.createSpy('delayedFn2'),
      delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
      mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
      clock = new j$.Clock({setTimeout: function() {}}, function () { return delayedFunctionScheduler; }, mockDate);

  delayedFn1.and.callFake(function() { clock.setTimeout(delayedFn2, 0); });
  clock.install();
  clock.setTimeout(delayedFn1, 5);

  clock.tick(5);
  expect(delayedFn1).toHaveBeenCalled();
  expect(delayedFn2).not.toHaveBeenCalled();

  clock.tick();
  expect(delayedFn2).toHaveBeenCalled();
});

it("correctly calls functions scheduled while the Clock is advancing", function() {
  var delayedFn1 = jasmine.createSpy('delayedFn1'),
      delayedFn2 = jasmine.createSpy('delayedFn2'),
      delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
      mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
      clock = new j$.Clock({setTimeout: function() {}}, function () { return delayedFunctionScheduler; }, mockDate);

  delayedFn1.and.callFake(function() { clock.setTimeout(delayedFn2, 1); });
  clock.install();
  clock.setTimeout(delayedFn1, 5);

  clock.tick(6);
  expect(delayedFn1).toHaveBeenCalled();
  expect(delayedFn2).toHaveBeenCalled();
});

it("correctly schedules functions scheduled while the Clock is advancing but after the Clock is uninstalled", function() {
  var delayedFn1 = jasmine.createSpy('delayedFn1'),
      delayedFn2 = jasmine.createSpy('delayedFn2'),
      delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
      mockDate = { install: function() {}, tick: function() {}, uninstall: function() {} },
      clock = new j$.Clock({setTimeout: function() {}}, function () { return delayedFunctionScheduler; }, mockDate);

  delayedFn1.and.callFake(function() {
    clock.uninstall();
    clock.install();
    clock.setTimeout(delayedFn2, 0);
  });

  clock.install();
  clock.setTimeout(delayedFn1, 1);

  clock.tick(1);
  expect(delayedFn1).toHaveBeenCalled();
  expect(delayedFn2).not.toHaveBeenCalled();

  clock.tick(1);
  expect(delayedFn2).toHaveBeenCalled();
});

it("does not mock the Date object by default", function() {
   var delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    global = {Date: Date},
    mockDate = new j$.MockDate(global),
    clock = new j$.Clock({setTimeout: setTimeout}, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install();

  expect(global.Date).toEqual(Date);

  var now = new global.Date().getTime();

  clock.tick(50);

  expect(new global.Date().getTime() - now).not.toEqual(50);
});

it("mocks the Date object and sets it to current time", function() {
  var delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    global = {Date: Date},
    mockDate = new j$.MockDate(global),
    clock = new j$.Clock({setTimeout: setTimeout}, function () { return delayedFunctionScheduler; }, mockDate);

  clock.install().mockDate();

  var now = new global.Date().getTime();

  clock.tick(50);

  expect(new global.Date().getTime() - now).toEqual(50);

  var timeoutDate = 0;
  clock.setTimeout(function() {
    timeoutDate = new global.Date().getTime();
  }, 100);

  clock.tick(100);

  expect(timeoutDate - now).toEqual(150);
});

it("mocks the Date object and sets it to a given time", function() {
  var delayedFunctionScheduler = new j$.DelayedFunctionScheduler(),
    global = {Date: Date},
    mockDate = new j$.MockDate(global),
    clock = new j$.Clock({setTimeout: setTimeout}, function () { return delayedFunctionScheduler; }, mockDate),
    baseTime = new Date(2013, 9, 23);

  clock.install().mockDate(baseTime);

  var now = new global.Date().getTime();

  expect(now).toEqual(baseTime.getTime());

  clock.tick(50);

  expect(new global.Date().getTime()).toEqual(baseTime.getTime() + 50);

  var timeoutDate = 0;
  clock.setTimeout(function() {
    timeoutDate = new global.Date().getTime();
  }, 100);

  clock.tick(100);

  expect(timeoutDate).toEqual(baseTime.getTime() + 150);
});

});