public void IsValid_Should_Return_False_When_Value_Is_Null_And_CanBeNull_Is_False()
{
// Arrange
var attr = new StringValidateAttribute("Test message") { CanBeNull = false };
// Act
bool result = attr.IsValid(null);
// Assert
Assert.IsFalse(result);
}
public void IsValid_Should_Return_False_When_Value_Is_Not_Match_Regex()
{
// Arrange
var attr = new StringValidateAttribute("Test message") { RegEx = @"^[0-1]$" };
// Act
bool result = attr.IsValid("2");
// Assert
Assert.IsFalse(result);
}
public void IsValid_Should_Return_False_When_Value_Is_Less_Than_MinLength()
{
// Arrange
var attr = new StringValidateAttribute("Test message") { MinLength = 3 };
// Act
bool result = attr.IsValid("12");
// Assert
Assert.IsFalse(result);
}
public void Constructor_Should_Set_Default_Values()
{
// Act
var attr = new StringValidateAttribute("Test message");
// Assert
Assert.AreEqual(-1, attr.MinLength);
Assert.AreEqual(-1, attr.MaxLength);
Assert.IsTrue(attr.CanBeEmpty);
Assert.IsTrue(attr.CanBeNull);
Assert.IsNull(attr.RegEx);
}
public void IsValid_Should_Return_True_When_Parameters_Not_Specified()
{
var values =
new[]
{
"",
null,
"1234567890",
"abcdefghjk",
"~!@#$%^&*()_+"
};
foreach (var value in values)
{
// Arrange
var attr = new StringValidateAttribute("Test message");
// Act
bool result = attr.IsValid(value);
// Assert
Assert.IsTrue(result);
}
}
public void IsValid_Should_Throw_Exception_When_Value_Is_Not_String()
{
// Arrange
var attr = new StringValidateAttribute("Test message");
// Act
// Assert
attr.IsValid(5);
}
public void IsValid_Should_Return_True_When_Value_Meet_All_Requirements()
{
// Arrange
var attr = new StringValidateAttribute("Test message")
{
MinLength = 1,
MaxLength = 3,
CanBeNull = false,
CanBeEmpty = false,
RegEx = @"^[0]$"
};
// Act
bool result = attr.IsValid("0");
// Assert
Assert.IsTrue(result);
}
