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!"));
}
/// <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;
}
