public void When_Object_Is_Null_Then_Valid()
{
// Arrange
var greaterThanAttribute = new GreaterThanOrEqualToAttribute(1);
object nullObject = null;
// Act
var isValid = greaterThanAttribute.IsValid(nullObject);
// Assert
Assert.IsTrue(isValid);
}
public void When_Value_Type_Is_Not_Numeric_Then_Exception_Is_Thrown()
{
// Arrange
var greaterThanAttribute = new GreaterThanOrEqualToAttribute(10);
const string typedValue = "A String";
// Act
var exception = Assert.Throws <FormatException>(() => greaterThanAttribute.IsValid(typedValue));
// Assert
exception.Should().NotBeNull();
}
public void When_Value_Is_Less_Than_Required_Then_Invalid()
{
// Arrange
var greaterThanAttribute = new GreaterThanOrEqualToAttribute(2);
var value = 0;
// Act
var isValid = greaterThanAttribute.IsValid(value);
// Assert
isValid.Should().BeFalse();
}
public void When_Value_Type_Is_Numeric_And_Greater_Than_Required_Then_Valid(Type type, object value)
{
// Arrange
var greaterThanAttribute = new GreaterThanOrEqualToAttribute(2);
var typedValue = Convert.ChangeType(value, type);
// Act
var isValid = greaterThanAttribute.IsValid(typedValue);
// Assert
isValid.Should().BeTrue();
}
public void When_Value_Is_Equal_To_Required_Then_Valid()
{
// Arrange
var greaterThanAttribute = new GreaterThanOrEqualToAttribute(2);
var value = 2;
// Act
var isValid = greaterThanAttribute.IsValid(value);
// Assert
isValid.Should().BeTrue();
}