public void AddTopic_OnBlankTopic()
{
// Arrange
ITopicBuilder builder = new TopicBuilder(TopicConsumer.Subscriber);
// Act
Action appendingEmptyTopic = () =>
builder.AddTopic(string.Empty);
// Assert
appendingEmptyTopic.Should()
.Throw <EmptyTopicException>("because an empty topic is not a valid one to be added");
}
public void AddTopic_OnTopicSeparator()
{
// Arrange
ITopicBuilder builder = new TopicBuilder(TopicConsumer.Subscriber);
// Act
Action appendingTopic = () =>
builder.AddTopic(
Mqtt.Topic.Separator.ToString());
// Assert
appendingTopic.Should()
.Throw <InvalidTopicException>("because the topic separator is not a valid topic to be appended");
}
public void AddTopic_OnMultiLevelWildcard()
{
// Arrange
ITopicBuilder builder = new TopicBuilder(TopicConsumer.Publisher);
// Act
Action addSingleLevelWildcard = () =>
builder = builder.AddTopic(
Mqtt.Wildcard.MultiLevel.ToString());
// Assert
addSingleLevelWildcard.Should()
.Throw <IllegalTopicConstructionException>(
"because a topic used on PUBLISH mode cannot use wildcard");
}
public void AddTopic_OnValidTopic()
{
// Arrange
var addCount = Fixture.Create <int>();
ITopicBuilder builder = new TopicBuilder(addCount + 1, TopicConsumer.Subscriber);
// Act
for (var i = 0; i < addCount; ++i)
{
builder = builder.AddTopic(Fixture.Create <string>());
}
// Assert
builder.Levels
.Should()
.Be(addCount,
"because there should be as many levels as topics added");
}
public void AddTopic_OnSingleLevelWildcard()
{
// Arrange
ITopicBuilder builder = new TopicBuilder(TopicConsumer.Subscriber);
// Act
builder = builder.AddTopic(
Mqtt.Wildcard.SingleLevel.ToString());
// Assert
builder.Levels
.Should()
.Be(1, "because the wildcard consist of one level");
builder.IsAppendingAllowed
.Should()
.BeTrue("because a topic appending is allowed after a single-level wildcard");
}
public void AddTopic_OnMultiLevelWildcard()
{
// Arrange
ITopicBuilder builder = new TopicBuilder(TopicConsumer.Subscriber);
// Act
builder = builder.AddTopic(
Mqtt.Wildcard.MultiLevel.ToString());
// Assert
builder.Levels
.Should()
.Be(1, "because the wildcard consist of one level");
builder.IsAppendingAllowed
.Should()
.BeFalse("because no addition should be allowed after a multi-level wildcard");
}