public static void TodayIsBirthdayFebruary29Th()
{
var today = new DateTime(2021, 3, 1);
var numberGenerator = new NumberGeneratorStub(new[] { 33, 2, 29 });
var expectedDateOfBirth = new DateTime(1988, 2, 29);
CheckDateOfBirth(today, numberGenerator, expectedDateOfBirth);
}
public static void TodayIsBirthday()
{
var today = new DateTime(2021, 2, 12);
var numberGenerator = new NumberGeneratorStub(new[] { 34, 2, 12 });
var expectedDateOfBirth = new DateTime(1987, 2, 12);
CheckDateOfBirth(today, numberGenerator, expectedDateOfBirth);
}
public static void DateOfBirthIsOn29thOfFebruary()
{
var today = new DateTime(2021, 2, 10);
var numberGenerator = new NumberGeneratorStub(new[] { 29, 2, 29, 23 });
var expectedDateOfBirth = new DateTime(1991, 2, 23);
CheckDateOfBirth(today, numberGenerator, expectedDateOfBirth);
}
public static void DateOfBirthOnLaterDayInSameMonth()
{
var today = new DateTime(2021, 3, 15);
var numberGenerator = new NumberGeneratorStub(new[] { 33, 3, 28 });
var expectedDateOfBirth = new DateTime(1987, 3, 28);
CheckDateOfBirth(today, numberGenerator, expectedDateOfBirth);
}
public static void DateOfBirthInLaterMonthThanToday()
{
var today = new DateTime(2021, 2, 7);
var numberGenerator = new NumberGeneratorStub(new[] { 40, 5, 31 });
var expectedDateOfBirth = new DateTime(1980, 5, 31);
CheckDateOfBirth(today, numberGenerator, expectedDateOfBirth);
}
public static void DateOfBirthInSameYear()
{
var today = new DateTime(2021, 2, 6);
var numberGenerator = new NumberGeneratorStub(new[] { 21, 1, 25 });
var expectedDateOfBirth = new DateTime(2000, 1, 25);
CheckDateOfBirth(today, numberGenerator, expectedDateOfBirth);
}
private static void CheckDateOfBirth(DateTime today, NumberGeneratorStub numberGenerator, DateTime expectedDateOfBirth)
{
var actualDateOfBirth = DateOfBirth.CreateRandom(today, numberGenerator.GetNextNumberDelegate);
actualDateOfBirth.Should().Be(expectedDateOfBirth);
}
