public void GetGenericArgumentValue()
{
ConstructorArgumentValues values = new ConstructorArgumentValues();
Assert.IsNull(values.GetGenericArgumentValue(typeof(object)), "Mmm... managed to get a non null instance back from an empty instance.");
values.AddGenericArgumentValue(DBNull.Value, typeof(DBNull).FullName);
Assert.IsNull(values.GetGenericArgumentValue(typeof(string)), "Mmm... managed to get a non null instance back from an instance that should have now't with the specified Type.");
ConstructorArgumentValues.ValueHolder value =
values.GetGenericArgumentValue(typeof(DBNull));
Assert.IsNotNull(value, "Stored a value of a specified Type, but got null when retrieving it using said Type.");
Assert.AreSame(DBNull.Value, value.Value, "The value stored at the specified index was not the exact same instance as was added.");
}
public void ValueHolderToStringsNicely()
{
ConstructorArgumentValues values = new ConstructorArgumentValues();
values.AddGenericArgumentValue(1, typeof(int).FullName);
ConstructorArgumentValues.ValueHolder vh = values.GetGenericArgumentValue(typeof(int));
Assert.AreEqual("'1' [System.Int32]", vh.ToString());
}
public void GetGeneric_Untyped_ArgumentValueWithOnlyStronglyTypedValuesInTheCtorValueList()
{
ConstructorArgumentValues values = new ConstructorArgumentValues();
const string expectedValue = "Rick";
values.AddGenericArgumentValue(expectedValue, typeof(string).FullName);
ConstructorArgumentValues.ValueHolder name = values.GetGenericArgumentValue(null, null);
Assert.IsNull(name,
"Must get null valueholder back if no required type is specified but only " +
"strongly typed values are present in the ctor values list.");
}
public void GetGeneric_Untyped_ArgumentValue()
{
ConstructorArgumentValues values = new ConstructorArgumentValues();
const string expectedValue = "Rick";
values.AddGenericArgumentValue(expectedValue);
ConstructorArgumentValues.ValueHolder name = values.GetGenericArgumentValue(null, null);
Assert.IsNotNull(name,
"Must get non-null valueholder back if no required type is specified.");
Assert.AreEqual(expectedValue, name.Value);
}
public void GetGenericArgumentValueIgnoresAlreadyUsedValues()
{
ISet used = new ListSet();
ConstructorArgumentValues values = new ConstructorArgumentValues();
values.AddGenericArgumentValue(1);
values.AddGenericArgumentValue(2);
values.AddGenericArgumentValue(3);
Type intType = typeof(int);
ConstructorArgumentValues.ValueHolder one = values.GetGenericArgumentValue(intType, used);
Assert.AreEqual(1, one.Value);
used.Add(one);
ConstructorArgumentValues.ValueHolder two = values.GetGenericArgumentValue(intType, used);
Assert.AreEqual(2, two.Value);
used.Add(two);
ConstructorArgumentValues.ValueHolder three = values.GetGenericArgumentValue(intType, used);
Assert.AreEqual(3, three.Value);
used.Add(three);
ConstructorArgumentValues.ValueHolder four = values.GetGenericArgumentValue(intType, used);
Assert.IsNull(four);
}