public void IsConstrainedBy_DifferentType_ThrowsArgumentException()
{
var ex = Assert.Throws <ArgumentException>(
() => Require.IsConstrainedBy <string>(new object(), C_ParamName)
);
Assert.That(ex.ParamName, Is.EqualTo(C_ParamName));
}
public void IsContrainedBy_NullForValueType_ThrowsArgumentNullException()
{
var ex = Assert.Throws <ArgumentNullException>(
() => Require.IsConstrainedBy <int>(null, C_ParamName)
);
Assert.That(ex.ParamName, Is.EqualTo(C_ParamName));
}
public void IsConstrainedBy_SameType_ReturnsValue()
{
var param = "hello";
Assert.That(Require.IsConstrainedBy <string>(param, C_ParamName), Is.SameAs(param));
}
public void IsConstrainedBy_NullForReferenceType_ReturnsNull()
{
Assert.That(Require.IsConstrainedBy <string>(null, C_ParamName), Is.Null);
}