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c#fluent-assertions
Marco Medrano
Marco Medrano

Reputation: 3040

FluentAssertions Comparing two list of different type

I wonder if there is a way to compare two lists of different types. I found this method:

        public AndConstraint<TAssertions> Equal(IEnumerable<T> expectation, Func<T, T, bool> predicate, string because = "", params object[] reasonArgs)
        {
          this.AssertSubjectEquality<T>((IEnumerable) expectation, predicate, because, reasonArgs);
          return new AndConstraint<TAssertions>((TAssertions) this);
        }

I am looking for something like:

    public AndConstraint<TAssertions> Equal<U>(IEnumerable<T> expectation, Func<T, U, bool> predicate, string because = "", params object[] reasonArgs)
    {
      this.AssertSubjectEquality<T,U>((IEnumerable) expectation, predicate, because, reasonArgs);
      return new AndConstraint<TAssertions>((TAssertions) this);
    }

I tried to make an extension method but method AssertSubjectEquality is protected and does not support a second type.

Upvotes: 0

Views: 857

Answers (1)

Dennis Doomen
Dennis Doomen

Reputation: 8889

You can't do that without copying the AssertSubjectEquality and AssertCollectionsHaveSameCount methods of the CollectionAssertions class along with it.

Instead, I would suggest you fork the repository and send me a Pull Request in which you change the generic parameters of those two methods from <T> to <T, U> and add your method to the GenericCollectionAssertions. I'll make it part of v3.3.

Upvotes: 1

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