Baseline.Testing.FileHashingExtensionsTester.hash_group_of_files_by_modified_date C# (CSharp) Method

        public void hash_group_of_files_by_modified_date()
        {
            var file1 = "a.txt";
            var file2 = "b.txt";
            var file3 = "c.txt";
            new FileSystem().WriteStringToFile(file1, "something");
            new FileSystem().WriteStringToFile(file2, "else");
            new FileSystem().WriteStringToFile(file3, "altogether");

            Thread.Sleep(1000);

            // Isn't dependent upon order of the files
            var hash1 = new string[]{file1, file2, file3}.HashByModifiedDate();
            var hash2 = new string[] { file2, file3, file1 }.HashByModifiedDate();
            var hash3 = new string[] { file2, file1, file3 }.HashByModifiedDate();

            hash1.ShouldBe(hash2);
            hash1.ShouldBe(hash3);

            var hash4 = new string[] { file1, file2 }.HashByModifiedDate();
            hash4.ShouldNotBe(hash1);

            new FileSystem().WriteStringToFile(file1, "else");

            Thread.Sleep(1000);

            var hash5 = new string[] { file2, file1, file3 }.HashByModifiedDate();

            hash5.ShouldNotBe(hash1);
        }