public void GetDistinctPreviousMonths_FetchFiveMonthsPrevious_FromFebruary()
{
var fakeCurrentTime = new Mock<ICurrentTime>();
fakeCurrentTime.Setup(x => x.GetCurrentTime()).Returns(() => new DateTime(2013, 2, 1));
var sut = new DistinctMonthHelper(fakeCurrentTime.Object);
List<DateTime> months = sut.GetDistinctPreviousMonths(new DateTime(2013, 2, 1), 5);
string[] expected = { "January", "December", "November", "October", "September" };
IEnumerable<string> actual = months.Select(x => x.ToLongDateString().Split(' ').ElementAt(1));
CollectionAssert.AreEqual(expected, actual);
}
public void GetDistinctPreviousMonths_FetchFiveMonthsPrevious_FromAugust()
{
var fakeCurrentTime = new Mock<ICurrentTime>();
fakeCurrentTime.Setup(x => x.GetCurrentTime()).Returns(() => new DateTime(2013, 8, 1));
var sut = new DistinctMonthHelper(fakeCurrentTime.Object);
List<DateTime> months = sut.GetDistinctPreviousMonths(new DateTime(2013, 8, 1), 5);
string[] expected = { "July", "June", "May", "April", "March" };
IEnumerable<string> actual = months.Select(x => x.ToLongDateString().Split(' ').ElementAt(1));
CollectionAssert.AreEqual(expected, actual);
}
public void GetDistinctMonths_FetchFiveMonthsPrevious_WithOverlappingYears()
{
var fakeCurrentTime = new Mock<ICurrentTime>();
fakeCurrentTime.Setup(x => x.GetCurrentTime()).Returns(() => new DateTime(2013, 12, 1));
var sut = new DistinctMonthHelper(fakeCurrentTime.Object);
List<DateTime> months = sut.GetDistinctPreviousMonths(new DateTime(2013, 3, 1), 5);
int[] expected = { 2013, 2013, 2012, 2012, 2012 };
IEnumerable<int> actual = months.Select(x => x.Year);
CollectionAssert.AreEqual(expected, actual);
}
public void GetDistinctPreviousMonths_SetMonthsRequiredParamTo1_IfAZeroValueIsGiven()
{
var dateTime = new DateTime(2013, 8, 4);
var fakeCurrentTime = new Mock<ICurrentTime>();
fakeCurrentTime.Setup(x => x.GetCurrentTime()).Returns(dateTime);
var sut = new DistinctMonthHelper(fakeCurrentTime.Object);
List<DateTime> result = sut.GetDistinctPreviousMonths(dateTime, 0);
Assert.AreEqual(1, result.Count);
}
public void GetDistinctPreviousMonths_SetDateParamToCurrentTime_IfItIsGreaterThanCurrentTime()
{
var dateTime = new DateTime(2014, 8, 4);
var fakeCurrentTime = new Mock<ICurrentTime>();
fakeCurrentTime.Setup(x => x.GetCurrentTime()).Returns(() => new DateTime(2013, 8, 4));
var sut = new DistinctMonthHelper(fakeCurrentTime.Object);
List<DateTime> result = sut.GetDistinctPreviousMonths(dateTime, 5);
Assert.AreEqual(7, result[0].Month);
Assert.AreEqual(2013, result[0].Year);
}
public void GetDistinctPreviousMonths_ReturnTheMonthCount_AsSpecifiedByMonthsRequiredParam()
{
var dateTime = new DateTime(2013, 8, 4);
var fakeCurrentTime = new Mock<ICurrentTime>();
fakeCurrentTime.Setup(x => x.GetCurrentTime()).Returns(dateTime);
var sut = new DistinctMonthHelper(fakeCurrentTime.Object);
List<DateTime> result = sut.GetDistinctPreviousMonths(dateTime, 10);
Assert.AreEqual(10, result.Count);
}