Ignore case for object properties when comparing collections

Question

I have two collections that contain objects of my custom type. I compare these collections using FluentAssertions library:

Collection1.Should().BeEquivalentTo(Collection2);

Let's say, objects in the collections have string property called Title, but sometimes their case is different (title case vs. upper case). The comparison fails due to this.

Is there a way to ignore case for some (or all) object's string properties when comparing collections?

score 1 · Accepted Answer · answered May 05 '17 at 04:04

1

No, sorry. But you could create your own implementation of IMemberSelectionRule

answered May 05 '17 at 04:04

Dennis Doomen

8,368
1
32
44

Thanks for the suggestion, but I found a way to make these string properties `ToUpper()` on collection initialization, so the case does not matter. – YMM May 06 '17 at 23:07
Wait, you meant that the casing of the actual property _values_ had different casing. I thought you meant the names of the properties. – Dennis Doomen May 08 '17 at 05:16
No, case of property values. The names are always 'Title'. – YMM May 09 '17 at 10:21

score 1 · Answer 2 · answered May 05 '17 at 05:52

1

Yes. Just make your custom type implement IComparable interface. In CompareTo method implement a comparison whatever way you want. In your case, a ignore-case string comparison.

answered May 05 '17 at 05:52

ozgur

2,549
4
25
40

Ignore case for object properties when comparing collections

2 Answers2