public void ViewTopicsTest()
{
// prerequisite method call
bool returnValue = UserAuthentication.Login(UserData.Username, UserData.Password);
// prerequisite check
Assert.IsTrue(returnValue, "\"Login\" method returns false");
User user = UserAuthentication.LoggedInUser;
Assert.IsNotNull(user, "\"LoggedInUser\" is null");
// initialization
Topic returnTopic = TopicBank.AddTopic(QuestionData.TopicName);
Assert.IsNotNull(returnTopic, "\"AddTopic\" method returns null");
foreach (string topicName in QuestionData.TopicNames)
{
TopicBank.AddTopic(topicName);
}
// test method call
List <Topic> list = TopicBank.ViewTopics();
// initial check
Assert.AreEqual(5, list.Count, "\"ViewTopics\" method does not return all topics");
// initial database check
List <string> topicNameList = TestHelper.GetTopicNameListFromTopicList(list);
const string errorMessage = "Topic not shown in the list";
Assert.IsTrue(topicNameList.Contains(QuestionData.TopicName), errorMessage);
foreach (string topicName in QuestionData.TopicNames)
{
Assert.IsTrue(topicNameList.Contains(topicName), errorMessage);
}
// extended check
list = TopicBank.ViewTopics("DuMmY");
Assert.AreEqual(2, list.Count, "\"ViewTopics\" method does not return all specified topics");
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(topicNameList.Contains(QuestionData.TopicNames[0]), errorMessage);
}
list = TopicBank.ViewTopics("never_found");
Assert.AreEqual(0, list.Count, "\"ViewTopics\" method returns invalid topics");
// security check
UserAuthentication.Logout();
list = TopicBank.ViewTopics();
Assert.IsNull(list, "Topics shown even after logout");
}
