public void Cannot_compare_if_the_value_is_not_a_datetime()
{
var comparer = new DateTimeValueComparer();
comparer.CanCompare(3).Should().BeFalse();
comparer.CanCompare("x").Should().BeFalse();
comparer.CanCompare(4.3).Should().BeFalse();
}
public void Returns_false_the_value_is_correct_format_but_not_a_valid_date()
{
var comparer = new DateTimeValueComparer();
comparer.Compare(new DateTime(2011, 2, 28).ToString().Replace("28", "29"), new DateTime(2011, 2, 28))
.Should().BeFalse();
comparer.Compare(new DateTime(2011, 12, 1).ToString().Replace("12", "13"), new DateTime(2011, 12, 1))
.Should().BeFalse();
}
public void Returns_false_when_the_expected_value_is_not_a_valid_datetime()
{
var comparer = new DateTimeValueComparer();
comparer.Compare("x", new DateTime(2020, 1, 1))
.Should().BeFalse();
comparer.Compare("January1", new DateTime(2020, 1, 1))
.Should().BeFalse();
}
public void Returns_true_when_the_string_and_values_match_exactly()
{
var comparer = new DateTimeValueComparer();
comparer.Compare(new DateTime(2011, 1, 2).ToString(), new DateTime(2011, 1, 2))
.Should().BeTrue();
comparer.Compare(new DateTime(2020, 12, 31).ToString(), new DateTime(2020, 12, 31))
.Should().BeTrue();
}
public void Returns_false_the_value_is_correct_format_but_not_a_valid_date()
{
var comparer = new DateTimeValueComparer();
comparer.TheseValuesAreTheSame("2/29/2011", DateTime.Parse("2/28/2011"))
.ShouldBeFalse();
comparer.TheseValuesAreTheSame("13/1/2011", DateTime.Parse("12/1/2011"))
.ShouldBeFalse();
}
public void Returns_false_when_the_expected_value_is_not_a_valid_datetime()
{
var comparer = new DateTimeValueComparer();
comparer.TheseValuesAreTheSame("x", DateTime.Parse("1/1/2020"))
.ShouldBeFalse();
comparer.TheseValuesAreTheSame("January1", DateTime.Parse("1/1/2020"))
.ShouldBeFalse();
}
public void Returns_true_when_the_string_and_values_match_exactly()
{
var comparer = new DateTimeValueComparer();
comparer.TheseValuesAreTheSame("1/2/2011", DateTime.Parse("1/2/2011"))
.ShouldBeTrue();
comparer.TheseValuesAreTheSame("12/31/2020", DateTime.Parse("12/31/2020"))
.ShouldBeTrue();
}
public void Returns_false_when_the_string_and_values_match_for_different_dates()
{
var comparer = new DateTimeValueComparer();
comparer.Compare(new DateTime(2011, 1, 3).ToString(), new DateTime(2011, 1, 2))
.Should().BeFalse();
comparer.Compare(new DateTime(2011, 1, 2).ToString(), new DateTime(2011, 1, 3))
.Should().BeFalse();
comparer.Compare(new DateTime(2011, 1, 1).ToString(), new DateTime(2012, 1, 1))
.Should().BeFalse();
comparer.Compare(new DateTime(2011, 1, 1).ToString(), new DateTime(2011, 2, 1))
.Should().BeFalse();
}
public void Returns_false_when_the_string_and_values_match_for_different_dates()
{
var comparer = new DateTimeValueComparer();
comparer.TheseValuesAreTheSame("1/3/2011", DateTime.Parse("1/2/2011"))
.ShouldBeFalse();
comparer.TheseValuesAreTheSame("1/2/2011", DateTime.Parse("1/3/2011"))
.ShouldBeFalse();
comparer.TheseValuesAreTheSame("1/1/2011", DateTime.Parse("1/1/2012"))
.ShouldBeFalse();
comparer.TheseValuesAreTheSame("1/1/2011", DateTime.Parse("2/1/2011"))
.ShouldBeFalse();
}