public void Enumerable_ShouldBe_Empty_WhenSource_IsEmpty()
        {
            // Arrange
            var source      = Enumerable.Empty <string>();
            var attachments = new FilesToAttachments(source);
            // Act
            var result = attachments.ToList();

            // Assert
            result.Should().BeEmpty();
        }
        public void Enumerable_ItemPath_ShouldBe_Source()
        {
            // Arrange
            var source = new[]
            {
                "TestData\\test.txt",
                "TestData\\test-2.txt",
                "TestData\\test-3.txt"
            };
            var attachments = new FilesToAttachments(source);
            // Act
            var result = attachments.ToList();

            // assert
            result.Select(a => a.Path).Should().BeEquivalentTo(source);
        }