public void ReverseWords()
        {
            // Arrange
              var service = new StringReverseService();

              // Act
              string test1 = null;
              try
              {
            test1 = service.ReverseWords(null);
              }
              catch (Exception ex) when (ex.Message.StartsWith("Value cannot be null."))
              {
            // Silently catch the expected exception.
              }

              var test2 = service.ReverseWords(" ");
              var test3 = service.ReverseWords("cat");
              var test4 = service.ReverseWords("trailing space ");
              var test5 = service.ReverseWords("Bang!");
              var test6 = service.ReverseWords(string.Empty);
              var test7 = service.ReverseWords("cat and dog");
              var test8 = service.ReverseWords("two  spaces");
              var test9 = service.ReverseWords(" leading space");
              var test10 = service.ReverseWords("Capital");
              var test11 = service.ReverseWords("This is a snark: ⸮");
              var test12 = service.ReverseWords("P!u@n#c$t%u^a&t*i(o)n");
              var test13 = service.ReverseWords("detartrated kayak detartrated");
              var test14 = service.ReverseWords("¿Qué?");
              var test15 = service.ReverseWords(" S  P  A  C  E  Y ");
              var test16 = service.ReverseWords("!B!A!N!G!S!");

              // Assert
              Assert.IsTrue(test1 == null);
              Assert.IsTrue(test2.Equals(" "));
              Assert.IsTrue(test3.Equals("tac"));
              Assert.IsTrue(test4.Equals("gniliart ecaps "));
              Assert.IsTrue(test5.Equals("!gnaB"));
              Assert.IsTrue(test6.Equals(string.Empty));
              Assert.IsTrue(test7.Equals("tac dna god"));
              Assert.IsTrue(test8.Equals("owt  secaps"));
              Assert.IsTrue(test9.Equals(" gnidael ecaps"));
              Assert.IsTrue(test10.Equals("latipaC"));
              Assert.IsTrue(test11.Equals("sihT si a :krans ⸮"));
              Assert.IsTrue(test12.Equals("n)o(i*t&a^u%t$c#n@u!P"));
              Assert.IsTrue(test13.Equals("detartrated kayak detartrated"));
              Assert.IsTrue(test14.Equals("?éuQ¿"));
              Assert.IsTrue(test15.Equals(" S  P  A  C  E  Y "));
              Assert.IsTrue(test16.Equals("!S!G!N!A!B!"));
        }
예제 #2
0
        /// <summary>
        /// Reverses the words.
        /// </summary>
        /// <param name="s">The source string.</param>
        /// <returns>The source string where words are reversed.</returns>
        public string ReverseWords(string s)
        {
            var properties = new Dictionary<string, string> { { "Argument 's'", string.Format("'{0}'", s == null ? "null" : s) } };
              telemetry.TrackEvent("ReverseWords", properties);

              string result = string.Empty;

              try
              {
            result = new StringReverseService().ReverseWords(s);
              }
              catch (ArgumentNullException)
              {
            // The ArgumentNullException is expected, therefore re-throw it further.
            throw;
              }
              catch (Exception exception)
              {
            telemetry.TrackException(exception);
              }

              return result;
        }