public void UniqueColumnValidator_WhenTestingOnlyOnce_ReturnsTrue()
{
const string INPUT = "";
const bool EXPECTED_RESULT = true;
UniqueColumnValidator validator = new UniqueColumnValidator();
bool result = validator.IsValid(INPUT);
Assert.AreEqual(EXPECTED_RESULT, result);
Assert.AreEqual(0, validator.GetErrors().Count);
}
public void UniqueColumnValidator_WhenTestingSameEntryTwice_IsInvalid()
{
const string INPUT = "notunique";
const bool EXPECTED_RESULT1 = true;
const bool EXPECTED_RESULT2 = false;
UniqueColumnValidator validator = new UniqueColumnValidator();
bool result1 = validator.IsValid(INPUT);
bool result2 = validator.IsValid(INPUT);
Assert.AreEqual(EXPECTED_RESULT1, result1, "first");
Assert.AreEqual(EXPECTED_RESULT2, result2, "second");
}
