CuttingEdge.Conditions

��#region Copyright (c) 2009 S. van Deursen

/* The CuttingEdge.Conditions library enables developers to validate pre- and postconditions in a fluent 

 * manner.

 * 

 * To contact me, please visit my blog at http://www.cuttingedge.it/blogs/steven/ 

 *

 * Copyright (c) 2009 S. van Deursen

 * 

 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and

 * associated documentation files (the "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the

 * following conditions:

 * 

 * The above copyright notice and this permission notice shall be included in all copies or substantial

 * portions of the Software.

 * 

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT

 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO

 * EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER

 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

 * USE OR OTHER DEALINGS IN THE SOFTWARE.

*/

#endregion



using System;

using System.Globalization;

using System.Threading;



using Microsoft.VisualStudio.TestTools.UnitTesting;



namespace CuttingEdge.Conditions.UnitTests.StringTests

{

    /// <summary>

    /// Tests the ValidatorExtensions.EndsWith method.

    /// </summary>

    [TestClass]

    public class StringEndsWithTests

    {

        [TestMethod]

        [Description("Calling EndsWith on string x with 'x EndsWith x' should pass.")]

        public void EndsWithTest01()

        {

            string a = "test";

            Condition.Requires(a).EndsWith(a);

        }



        [TestMethod]

        [Description("Calling EndsWith on string x (\"test\") with 'x EndsWith \"est\"' should pass.")]

        public void EndsWithTest02()

        {

            string a = "test";

            Condition.Requires(a).EndsWith("est");

        }



        [TestMethod]

        [ExpectedException(typeof(ArgumentException))]

        [Description("Calling EndsWith on string x (\"test\") with 'x EndsWith null' should fail.")]

        public void EndsWithTest03()

        {

            string a = "test";

            // A null value will never be found

            Condition.Requires(a).EndsWith(null);

        }



        [TestMethod]

        [Description("Calling EndsWith on string x (\"test\") with 'x EndsWith \"\"' should pass.")]

        public void EndsWithTest04()

        {

            string a = "test";

            // An empty string will always be found

            Condition.Requires(a).EndsWith(String.Empty);

        }



        [TestMethod]

        [ExpectedException(typeof(ArgumentNullException))]

        [Description("Calling EndsWith on string x (null) with 'x EndsWith \"\"' should fail.")]

        public void EndsWithTest05()

        {

            string a = null;

            // A null string only contains other null strings.

            Condition.Requires(a).EndsWith(String.Empty);

        }



        [TestMethod]

        [Description("Calling EndsWith on string x (null) with 'x EndsWith null' should pass.")]

        public void EndsWithTest06()

        {

            string a = null;

            Condition.Requires(a).EndsWith(null);

        }



        [TestMethod]

        [ExpectedException(typeof(ArgumentException))]

        [Description("Calling EndsWith on string x (\"test\") with 'x EndsWith \"me test\"' should fail.")]

        public void EndsWithTest07()

        {

            string a = "test";

            Condition.Requires(a).EndsWith("me test");

        }



        [TestMethod]

        [Description("Calling EndsWith on string x (\"test\") with 'x EndsWith \"test me\"' should fail with a correct exception message.")]

        public void EndsWithTest08()

        {

            string expectedMessage =

                "a should end with 'test me'." + Environment.NewLine +

                TestHelper.CultureSensitiveArgumentExceptionParameterText + ": a";



            try

            {

                string a = "test";

                Condition.Requires(a, "a").EndsWith("test me");

            }

            catch (Exception ex)

            {

                Assert.AreEqual(expectedMessage, ex.Message);

            }

        }



        [TestMethod]

        [Description("Calling EndsWith with conditionDescription parameter should pass.")]

        public void EndsWithTest09()

        {

            string a = null;

            Condition.Requires(a).EndsWith(null, string.Empty);

        }



        [TestMethod]

        [Description("Calling a failing EndsWith should throw an Exception with an exception message that contains the given parameterized condition description argument.")]

        public void EndsWithTest10()

        {

            string a = "test";

            try

            {

                Condition.Requires(a, "a").EndsWith("test me", "qwe {0} xyz");

                Assert.Fail();

            }

            catch (ArgumentException ex)

            {

                Assert.IsTrue(ex.Message.Contains("qwe a xyz"));

            }

        }



        [TestMethod]

        [Description("Calling EndsWith should be language dependent.")]

        public void StartsWithTest11()

        {

            CultureInfo originalCulture = Thread.CurrentThread.CurrentCulture;



            string a = "hello and hi";



            try

            {

                Thread.CurrentThread.CurrentCulture = new CultureInfo("tr-TR");



                // We check this using the Turkish-I problem.

                // see: http://msdn.microsoft.com/en-us/library/ms973919.aspx#stringsinnet20_topic5

                string turkishUpperCase = "H0
";



                Condition.Requires(a).EndsWith(turkishUpperCase, StringComparison.CurrentCultureIgnoreCase);

            }

            finally

            {

                Thread.CurrentThread.CurrentCulture = originalCulture;

            }

        }



        [TestMethod]

        [Description("Calling EndsWith on string x (\"test\") with 'x EndsWith null' should succeed when exceptions are suppressed.")]

        public void StartsWithTest12()

        {

            string a = "test";

            // A null value will never be found

            Condition.Requires(a).SuppressExceptionsForTest().EndsWith(null);

        }

    }

}