/// <summary>
/// Asserts that we get the right output even after reversing the order of input.
/// </summary>
private void AssertExpandObjectValid(OrderPreservingDictionary <FieldPath, Value> input, Dictionary <string, Value> expected)
{
var actual = WriteBatch.ExpandObject(input);
Assert.Equal(expected, actual);
actual = WriteBatch.ExpandObject(input.InReverseOrder());
Assert.Equal(expected, actual);
}
/// <summary>
/// Asserts that expanding the given input fails in both the original order and reverse order.
/// </summary>
private void AssertExpandObjectInvalid(OrderPreservingDictionary <FieldPath, Value> input)
{
Assert.Throws <InvalidOperationException>(() => WriteBatch.ExpandObject(input));
Assert.Throws <InvalidOperationException>(() => WriteBatch.ExpandObject(input.InReverseOrder()));
}