public async Task ReturnBooks_ReturnsTrue() { _mockLibraryRepo.Setup(x => x.GetUserBooks(It.IsAny <int>())).ReturnsAsync(_userBookDMList); _mockLibraryRepo.Setup(x => x.RemoveMyBooksBackToStore(It.IsAny <int>(), It.IsAny <int>())).ReturnsAsync(true); var response = await _libraryLogic.ReturnBooks(_borrowBook); Assert.IsTrue(response); }