public void CompareTopologyVersion_should_return_zero_when_topologies_are_equal()
{
var processId = ObjectId.Empty;
var counter = 31L;
var local = new TopologyVersion(processId, counter);
var serverResponse = local;
TopologyVersion.CompareTopologyVersion(local, serverResponse).Should().Be(0);
TopologyVersion.IsFresherThanOrEqualTo(local, serverResponse).Should().BeTrue();
TopologyVersion.IsFresherThan(local, serverResponse).Should().BeFalse();
TopologyVersion.IsStalerThanOrEqualTo(local, serverResponse).Should().BeTrue();
TopologyVersion.IsStalerThan(local, serverResponse).Should().BeFalse();
}
public void CompareTopologyVersion_should_return_expected_when_processIds_are_equal_and_one_has_bigger_counter()
{
var processId1 = ObjectId.Empty;
var processId2 = ObjectId.Empty;
var counter = 42L;
var older = new TopologyVersion(processId1, counter);
var newer = new TopologyVersion(processId2, counter + 1);
TopologyVersion.CompareTopologyVersion(older, newer).Should().BeNegative();
TopologyVersion.IsStalerThan(older, newer).Should().BeTrue();
TopologyVersion.IsFresherThan(older, newer).Should().BeFalse();
TopologyVersion.CompareTopologyVersion(newer, older).Should().BePositive();
TopologyVersion.IsStalerThan(newer, older).Should().BeFalse();
TopologyVersion.IsFresherThan(newer, older).Should().BeTrue();
}
public void CompareTopologyVersion_should_always_return_negative_if_any_comparand_is_null()
{
var processId = ObjectId.Empty;
var counter = 31L;
TopologyVersion nullTopologyVersion = null;
TopologyVersion nonNullTopologyVersion = new TopologyVersion(processId, counter);
TopologyVersion.CompareTopologyVersion(nullTopologyVersion, nonNullTopologyVersion).Should().BeNegative();
TopologyVersion.IsStalerThan(nullTopologyVersion, nonNullTopologyVersion).Should().BeTrue();
TopologyVersion.IsFresherThan(nullTopologyVersion, nonNullTopologyVersion).Should().BeFalse();
TopologyVersion.CompareTopologyVersion(nonNullTopologyVersion, nullTopologyVersion).Should().BeNegative();
TopologyVersion.IsStalerThan(nonNullTopologyVersion, nullTopologyVersion).Should().BeTrue();
TopologyVersion.IsFresherThan(nonNullTopologyVersion, nullTopologyVersion).Should().BeFalse();
TopologyVersion.CompareTopologyVersion(nullTopologyVersion, nullTopologyVersion).Should().BeNegative();
TopologyVersion.IsStalerThan(nullTopologyVersion, nullTopologyVersion).Should().BeTrue();
TopologyVersion.IsFresherThan(nullTopologyVersion, nullTopologyVersion).Should().BeFalse();
}
public void CompareTopologyVersion_should_always_return_negative_if_processIds_are_not_equal()
{
var processId1 = ObjectId.Empty;
var processId2 = ObjectId.GenerateNewId();
var counter = 42L;
var subject1 = new TopologyVersion(processId1, counter);
var subject2 = new TopologyVersion(processId2, counter);
var local = subject1;
var serverResponse = subject2;
TopologyVersion.CompareTopologyVersion(local, serverResponse).Should().BeNegative();
TopologyVersion.IsStalerThan(local, serverResponse).Should().BeTrue();
TopologyVersion.IsFresherThan(local, serverResponse).Should().BeFalse();
// changing the order should change the results
local = subject2;
serverResponse = subject1;
TopologyVersion.CompareTopologyVersion(local, serverResponse).Should().BeNegative();
TopologyVersion.IsStalerThan(local, serverResponse).Should().BeTrue();
TopologyVersion.IsFresherThan(local, serverResponse).Should().BeFalse();
}