public void ShouldReturnFirstIfNeverChurned()
{
//Arrange
FakeRandomBookEnd fakeRandomBookEnd = new FakeRandomBookEnd.Builder().NextInt(new IntOf(1)).Build();
SingleReservoirSample <string> subject = new SingleReservoirSample <string>(new List <string>(), "DEFAULT", fakeRandomBookEnd);
//Act
string actual = subject.Element();
//Assert
actual.Should().Be("DEFAULT");
}
public void ShouldReturnDefaultGivenNoElements()
{
//Arrange
FakeRandomBookEnd fakeRandomBookEnd = new FakeRandomBookEnd.Builder().Build();
SingleReservoirSample <string> subject = new SingleReservoirSample <string>(new List <string>(), "DEFAULT", fakeRandomBookEnd);
//Act
string actual = subject.Element();
//Assert
actual.Should().Be("DEFAULT");
}
public void ShouldReturnSampledValue()
{
//Arrange
List <string> initial = new List <string> {
"a", "b", "c", "d"
};
FakeRandomBookEnd fakeRandomBookEnd = new FakeRandomBookEnd.Builder().NextInt(new IntOf(0), new IntOf(1), new IntOf(0), new IntOf(1)).Build();
SingleReservoirSample <string> subject = new SingleReservoirSample <string>(initial, "DEFAULT", fakeRandomBookEnd);
//Act
string actual = subject.Element();
//Assert
actual.Should().Be("c");
}
