public void IsValidReturnsFalseForNullString()
{
IValidationRule <string> rule = new StringCannotBeNullOrEmptyRule <string>(s => null, "Property");
bool isValid = rule.IsValid("1");
Assert.IsFalse(isValid, "IsValid returned true for null string.");
}
public void IsValidReturnsTrueForStringOfLengthOne()
{
IValidationRule <string> rule = new StringCannotBeNullOrEmptyRule <string>(s => s, "Property");
bool isValid = rule.IsValid("1");
Assert.IsTrue(isValid, "IsValid returned false for string of length 1.");
}
public void GetErrorMessageReturnsMessageWhenGivenNonNullObject()
{
IValidationRule <string> rule = new StringCannotBeNullOrEmptyRule <string>(s => s, "Property");
string errorMessage = rule.GetErrorMessage(string.Empty);
Assert.IsNotNull(errorMessage);
Assert.IsNotEmpty(errorMessage);
}
public void IsValidReturnsFalseWhenGivenNullObject()
{
IValidationRule <FakeObjectToValidate> rule =
new StringCannotBeNullOrEmptyRule <FakeObjectToValidate>(f => f.ToString(), "Property");
bool isValid = rule.IsValid(null);
Assert.IsFalse(isValid, "IsValid returned true for null object.");
}
public void IsValidReturnsTrueForStringOfLengthGreaterThanOne()
{
string stringToCheck = "1";
IValidationRule <string> rule = new StringCannotBeNullOrEmptyRule <string>(s => s, "Property");
for (int i = 2; i < 10; i++)
{
stringToCheck += i;
Assert.IsTrue(rule.IsValid(stringToCheck), "IsValid returned false for string of length {0}.", i);
}
}
