public void StringLengthValidator_WhenStringIsLongerThanMaxLength_IsValid()
{
const string INPUT = "a test string";
const bool EXPECTED = false;
StringLengthValidator validator = new StringLengthValidator(10);
bool result = validator.IsValid(INPUT);
Assert.AreEqual(EXPECTED, result);
}
public void StringLengthValidator_WhenStringIsSmaller_IsValid()
{
const string INPUT = "a test";
const bool EXPECTED = true;
const int MAX_LENGTH = 13;
StringLengthValidator validator = new StringLengthValidator(MAX_LENGTH);
bool result = validator.IsValid(INPUT);
Assert.AreEqual(EXPECTED, result);
}
public void Should_Return_Valid_When_String_Is_Forty_Character_Long() {
// Arrange
var validator = new StringLengthValidator(40);
// Act
var result = validator.IsValid(new string('A', 40));
// Assert
result.ShouldNotBeNull();
result.Valid.ShouldBeTrue();
result.ErrorMessages.ShouldNotBeNull();
result.ErrorMessages.ShouldBeEmpty();
}
public void Should_Return_Invalid_When_String_Lenghts_Dont_Match() {
// Arrange
var validator = new StringLengthValidator(40);
// Act
var result = validator.IsValid(new string('A', 39));
// Assert
result.ShouldNotBeNull();
result.Valid.ShouldBeFalse();
result.ErrorMessages.ShouldNotBeNull();
result.ErrorMessages.Count.ShouldEqual(1);
result.ErrorMessages.Single().ParamName.ShouldEqual("input");
result.ErrorMessages.Single().Message.ShouldEqual("Length of input string does not match expected. Expected: 40. Actual: 39.");
}