/src/NUnit.Silverlight.Framework/Assert.cs

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// ****************************************************************

// Copyright 2009, Charlie Poole

// This is free software licensed under the NUnit license. You may

// obtain a copy of the license at http://nunit.org

// ****************************************************************



// ****************************************************************

//              Generated by the NUnit Syntax Generator

//

// Command Line: GenSyntax.exe SyntaxElements.txt

// 

//                  DO NOT MODIFY THIS FILE DIRECTLY

// ****************************************************************



using System;

using System.Collections;

using System.ComponentModel;

using NUnit.Framework.Constraints;



namespace NUnit.Framework

{

    /// <summary>

    /// Delegate used by tests that execute code and

    /// capture any thrown exception.

    /// </summary>

    public delegate void TestDelegate();



    /// <summary>

    /// The Assert class contains a collection of static methods that

    /// implement the most common assertions used in NUnit.

    /// </summary>

    public class Assert

    {

        #region Constructor



        /// <summary>

        /// We don't actually want any instances of this object, but some people

        /// like to inherit from it to add other static methods. Hence, the

        /// protected constructor disallows any instances of this object. 

        /// </summary>

        protected Assert() { }



        #endregion



        #region Assert Counting



        private static int counter = 0;



        /// <summary>

        /// Gets the number of assertions executed so far and 

        /// resets the counter to zero.

        /// </summary>

        public static int Counter

        {

            get

            {

                int cnt = counter;

                counter = 0;

                return cnt;

            }

        }



        private static void IncrementAssertCount()

        {

            ++counter;

        }



        #endregion



        #region Equals and ReferenceEquals



        /// <summary>

        /// The Equals method throws an AssertionException. This is done 

        /// to make sure there is no mistake by calling this function.

        /// </summary>

        /// <param name="a"></param>

        /// <param name="b"></param>

        [EditorBrowsable(EditorBrowsableState.Never)]

        public static new bool Equals(object a, object b)

        {

            // TODO: This should probably be InvalidOperationException

            throw new AssertionException("Assert.Equals should not be used for Assertions");

        }



        /// <summary>

        /// override the default ReferenceEquals to throw an AssertionException. This 

        /// implementation makes sure there is no mistake in calling this function 

        /// as part of Assert. 

        /// </summary>

        /// <param name="a"></param>

        /// <param name="b"></param>

        public static new void ReferenceEquals(object a, object b)

        {

            throw new AssertionException("Assert.ReferenceEquals should not be used for Assertions");

        }



        #endregion



        #region Helper Methods

        /// <summary>

        /// Helper for Assert.AreEqual(double expected, double actual, ...)

        /// allowing code generation to work consistently.

        /// </summary>

        /// <param name="expected">The expected value</param>

        /// <param name="actual">The actual value</param>

        /// <param name="delta">The maximum acceptable difference between the

        /// the expected and the actual</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        protected static void AssertDoublesAreEqual(double expected, double actual, double delta, string message, object[] args)

        {

            if (double.IsNaN(expected) || double.IsInfinity(expected))

                Assert.That(actual, Is.EqualTo(expected), message, args);

            else

                Assert.That(actual, Is.EqualTo(expected).Within(delta), message, args);

        }

        #endregion



        #region Utility Asserts



        #region Pass



        /// <summary>

        /// Throws a <see cref="SuccessException"/> with the message and arguments 

        /// that are passed in. This allows a test to be cut short, with a result

        /// of success returned to NUnit.

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="AssertionException"/> with.</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void Pass(string message, params object[] args)

        {

            if (message == null) message = string.Empty;

            else if (args != null && args.Length > 0)

                message = string.Format(message, args);



            throw new SuccessException(message);

        }



        /// <summary>

        /// Throws a <see cref="SuccessException"/> with the message and arguments 

        /// that are passed in. This allows a test to be cut short, with a result

        /// of success returned to NUnit.

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="AssertionException"/> with.</param>

        static public void Pass(string message)

        {

            Assert.Pass(message, null);

        }



        /// <summary>

        /// Throws a <see cref="SuccessException"/> with the message and arguments 

        /// that are passed in. This allows a test to be cut short, with a result

        /// of success returned to NUnit.

        /// </summary>

        static public void Pass()

        {

            Assert.Pass(string.Empty, null);

        }



        #endregion



        #region Fail



        /// <summary>

        /// Throws an <see cref="AssertionException"/> with the message and arguments 

        /// that are passed in. This is used by the other Assert functions. 

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="AssertionException"/> with.</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void Fail(string message, params object[] args)

        {

            if (message == null) message = string.Empty;

            else if (args != null && args.Length > 0)

                message = string.Format(message, args);



            throw new AssertionException(message);

        }



        /// <summary>

        /// Throws an <see cref="AssertionException"/> with the message that is 

        /// passed in. This is used by the other Assert functions. 

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="AssertionException"/> with.</param>

        static public void Fail(string message)

        {

            Assert.Fail(message, null);

        }



        /// <summary>

        /// Throws an <see cref="AssertionException"/>. 

        /// This is used by the other Assert functions. 

        /// </summary>

        static public void Fail()

        {

            Assert.Fail(string.Empty, null);

        }



        #endregion



        #region Ignore



        /// <summary>

        /// Throws an <see cref="IgnoreException"/> with the message and arguments 

        /// that are passed in.  This causes the test to be reported as ignored.

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="AssertionException"/> with.</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void Ignore(string message, params object[] args)

        {

            if (message == null) message = string.Empty;

            else if (args != null && args.Length > 0)

                message = string.Format(message, args);



            throw new IgnoreException(message);

        }



        /// <summary>

        /// Throws an <see cref="IgnoreException"/> with the message that is 

        /// passed in. This causes the test to be reported as ignored. 

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="AssertionException"/> with.</param>

        static public void Ignore(string message)

        {

            Assert.Ignore(message, null);

        }



        /// <summary>

        /// Throws an <see cref="IgnoreException"/>. 

        /// This causes the test to be reported as ignored. 

        /// </summary>

        static public void Ignore()

        {

            Assert.Ignore(string.Empty, null);

        }



        #endregion



        #region InConclusive

        /// <summary>

        /// Throws an <see cref="InconclusiveException"/> with the message and arguments 

        /// that are passed in.  This causes the test to be reported as inconclusive.

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="InconclusiveException"/> with.</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void Inconclusive(string message, params object[] args)

        {

            if (message == null) message = string.Empty;

            else if (args != null && args.Length > 0)

                message = string.Format(message, args);



            throw new InconclusiveException(message);

        }



        /// <summary>

        /// Throws an <see cref="InconclusiveException"/> with the message that is 

        /// passed in. This causes the test to be reported as inconclusive. 

        /// </summary>

        /// <param name="message">The message to initialize the <see cref="InconclusiveException"/> with.</param>

        static public void Inconclusive(string message)

        {

            Assert.Inconclusive(message, null);

        }



        /// <summary>

        /// Throws an <see cref="InconclusiveException"/>. 

        /// This causes the test to be reported as Inconclusive. 

        /// </summary>

        static public void Inconclusive()

        {

            Assert.Inconclusive(string.Empty, null);

        }



        #endregion



        #endregion



        #region Assert.That



        #region Object

        /// <summary>

        /// Apply a constraint to an actual value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expression">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        static public void That(object actual, IResolveConstraint expression)

        {

            Assert.That(actual, expression, null, null);

        }



        /// <summary>

        /// Apply a constraint to an actual value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expression">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        /// <param name="message">The message that will be displayed on failure</param>

        static public void That(object actual, IResolveConstraint expression, string message)

        {

            Assert.That(actual, expression, message, null);

        }



        /// <summary>

        /// Apply a constraint to an actual value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expression">A Constraint expression to be applied</param>

        /// <param name="actual">The actual value to test</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void That(object actual, IResolveConstraint expression, string message, params object[] args)

        {

            Constraint constraint = expression.Resolve();



            Assert.IncrementAssertCount();

            if (!constraint.Matches(actual))

            {

                MessageWriter writer = new TextMessageWriter(message, args);

                constraint.WriteMessageTo(writer);

                throw new AssertionException(writer.ToString());

            }

        }

        #endregion



        #region ActualValueDelegate

        /// <summary>

        /// Apply a constraint to an actual value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expr">A Constraint expression to be applied</param>

        /// <param name="del">An ActualValueDelegate returning the value to be tested</param>

        static public void That(ActualValueDelegate del, IResolveConstraint expr)

        {

            Assert.That(del, expr.Resolve(), null, null);

        }



        /// <summary>

        /// Apply a constraint to an actual value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expr">A Constraint expression to be applied</param>

        /// <param name="del">An ActualValueDelegate returning the value to be tested</param>

        /// <param name="message">The message that will be displayed on failure</param>

        static public void That(ActualValueDelegate del, IResolveConstraint expr, string message)

        {

            Assert.That(del, expr.Resolve(), message, null);

        }



        /// <summary>

        /// Apply a constraint to an actual value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="del">An ActualValueDelegate returning the value to be tested</param>

        /// <param name="expr">A Constraint expression to be applied</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void That(ActualValueDelegate del, IResolveConstraint expr, string message, params object[] args)

        {

            Constraint constraint = expr.Resolve();



            Assert.IncrementAssertCount();

            if (!constraint.Matches(del))

            {

                MessageWriter writer = new TextMessageWriter(message, args);

                constraint.WriteMessageTo(writer);

                throw new AssertionException(writer.ToString());

            }

        }

        #endregion



        #region ref Object

#if NET_2_0

        /// <summary>

        /// Apply a constraint to a referenced value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expression">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        static public void That<T>(ref T actual, IResolveConstraint expression)

        {

            Assert.That(ref actual, expression.Resolve(), null, null);

        }



        /// <summary>

        /// Apply a constraint to a referenced value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expression">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        /// <param name="message">The message that will be displayed on failure</param>

        static public void That<T>(ref T actual, IResolveConstraint expression, string message)

        {

            Assert.That(ref actual, expression.Resolve(), message, null);

        }



        /// <summary>

        /// Apply a constraint to a referenced value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="expression">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void That<T>(ref T actual, IResolveConstraint expression, string message, params object[] args)

        {

            Constraint constraint = expression.Resolve();



            Assert.IncrementAssertCount();

            if (!constraint.Matches(ref actual))

            {

                MessageWriter writer = new TextMessageWriter(message, args);

                constraint.WriteMessageTo(writer);

                throw new AssertionException(writer.ToString());

            }

        }

#else

        /// <summary>

        /// Apply a constraint to a referenced boolean, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="constraint">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        static public void That(ref bool actual, IResolveConstraint constraint)

        {

            Assert.That(ref actual, constraint.Resolve(), null, null);

        }



        /// <summary>

        /// Apply a constraint to a referenced value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="constraint">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        /// <param name="message">The message that will be displayed on failure</param>

        static public void That(ref bool actual, IResolveConstraint constraint, string message)

        {

            Assert.That(ref actual, constraint.Resolve(), message, null);

        }



        /// <summary>

        /// Apply a constraint to a referenced value, succeeding if the constraint

        /// is satisfied and throwing an assertion exception on failure.

        /// </summary>

        /// <param name="constraint">A Constraint to be applied</param>

        /// <param name="actual">The actual value to test</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void That(ref bool actual, IResolveConstraint expression, string message, params object[] args)

        {

            Constraint constraint = expression.Resolve();



            Assert.IncrementAssertCount();

            if (!constraint.Matches(ref actual))

            {

                MessageWriter writer = new TextMessageWriter(message, args);

                constraint.WriteMessageTo(writer);

                throw new AssertionException(writer.ToString());

            }

        }

#endif

        #endregion



        #region Boolean

        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display if the condition is false</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        static public void That(bool condition, string message, params object[] args)

        {

            Assert.That(condition, Is.True, message, args);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display if the condition is false</param>

        static public void That(bool condition, string message)

        {

            Assert.That(condition, Is.True, message, null);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        static public void That(bool condition)

        {

            Assert.That(condition, Is.True, null, null);

        }

        #endregion



        /// <summary>

        /// Asserts that the code represented by a delegate throws an exception

        /// that satisfies the constraint provided.

        /// </summary>

        /// <param name="code">A TestDelegate to be executed</param>

        /// <param name="constraint">A ThrowsConstraint used in the test</param>

        static public void That(TestDelegate code, IResolveConstraint constraint)

        {

            Assert.That((object)code, constraint);

        }

        #endregion



        #region Throws, Catch and DoesNotThrow



        #region Throws

        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <param name="expression">A constraint to be satisfied by the exception</param>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static Exception Throws(IResolveConstraint expression, TestDelegate code, string message, params object[] args)

        {

            Exception caughtException = null;



            try

            {

                code();

            }

            catch (Exception ex)

            {

                caughtException = ex;

            }



            Assert.That(caughtException, expression, message, args);



            return caughtException;

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <param name="expression">A constraint to be satisfied by the exception</param>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static Exception Throws(IResolveConstraint expression, TestDelegate code, string message)

        {

            return Throws(expression, code, message, null);

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <param name="expression">A constraint to be satisfied by the exception</param>

        /// <param name="code">A TestSnippet delegate</param>

        public static Exception Throws(IResolveConstraint expression, TestDelegate code)

        {

            return Throws(expression, code, string.Empty, null);

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <param name="expectedExceptionType">The exception Type expected</param>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static Exception Throws(Type expectedExceptionType, TestDelegate code, string message, params object[] args)

        {

            return Throws(new ExactTypeConstraint(expectedExceptionType), code, message, args);

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <param name="expectedExceptionType">The exception Type expected</param>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static Exception Throws(Type expectedExceptionType, TestDelegate code, string message)

        {

            return Throws(new ExactTypeConstraint(expectedExceptionType), code, message, null);

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <param name="expectedExceptionType">The exception Type expected</param>

        /// <param name="code">A TestSnippet delegate</param>

        public static Exception Throws(Type expectedExceptionType, TestDelegate code)

        {

            return Throws(new ExactTypeConstraint(expectedExceptionType), code, string.Empty, null);

        }



        #endregion



        #region Throws<T>

#if NET_2_0

        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <typeparam name="T">Type of the expected exception</typeparam>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static T Throws<T>(TestDelegate code, string message, params object[] args) where T : Exception

        {

            return (T)Throws(typeof(T), code, message, args);

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <typeparam name="T">Type of the expected exception</typeparam>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static T Throws<T>(TestDelegate code, string message) where T : Exception

        {

            return Throws<T>(code, message, null);

        }



        /// <summary>

        /// Verifies that a delegate throws a particular exception when called.

        /// </summary>

        /// <typeparam name="T">Type of the expected exception</typeparam>

        /// <param name="code">A TestSnippet delegate</param>

        public static T Throws<T>(TestDelegate code) where T : Exception

        {

            return Throws<T>(code, string.Empty, null);

        }

#endif

        #endregion



        #region Catch

        /// <summary>

        /// Verifies that a delegate throws an exception when called

        /// and returns it.

        /// </summary>

        /// <param name="code">A TestDelegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static Exception Catch(TestDelegate code, string message, params object[] args)

        {

            return Throws(new InstanceOfTypeConstraint(typeof(Exception)), code, message, args);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception when called

        /// and returns it.

        /// </summary>

        /// <param name="code">A TestDelegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static Exception Catch(TestDelegate code, string message)

        {

            return Throws(new InstanceOfTypeConstraint(typeof(Exception)), code, message);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception when called

        /// and returns it.

        /// </summary>

        /// <param name="code">A TestDelegate</param>

        public static Exception Catch(TestDelegate code)

        {

            return Throws(new InstanceOfTypeConstraint(typeof(Exception)), code);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception of a certain Type

        /// or one derived from it when called and returns it.

        /// </summary>

        /// <param name="expectedExceptionType">The expected Exception Type</param>

        /// <param name="code">A TestDelegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static Exception Catch(Type expectedExceptionType, TestDelegate code, string message, params object[] args)

        {

            return Throws(new InstanceOfTypeConstraint(expectedExceptionType), code, message, args);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception of a certain Type

        /// or one derived from it when called and returns it.

        /// </summary>

        /// <param name="expectedExceptionType">The expected Exception Type</param>

        /// <param name="code">A TestDelegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static Exception Catch(Type expectedExceptionType, TestDelegate code, string message)

        {

            return Throws(new InstanceOfTypeConstraint(expectedExceptionType), code, message);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception of a certain Type

        /// or one derived from it when called and returns it.

        /// </summary>

        /// <param name="expectedExceptionType">The expected Exception Type</param>

        /// <param name="code">A TestDelegate</param>

        public static Exception Catch(Type expectedExceptionType, TestDelegate code)

        {

            return Throws(new InstanceOfTypeConstraint(expectedExceptionType), code);

        }

        #endregion



        #region Catch<T>

#if NET_2_0

        /// <summary>

        /// Verifies that a delegate throws an exception of a certain Type

        /// or one derived from it when called and returns it.

        /// </summary>

        /// <typeparam name="T">The expected Exception Type</typeparam>

        /// <param name="code">A TestDelegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static T Catch<T>(TestDelegate code, string message, params object[] args) where T : System.Exception

        {

            return (T)Throws(new InstanceOfTypeConstraint(typeof(T)), code, message, args);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception of a certain Type

        /// or one derived from it when called and returns it.

        /// </summary>

        /// <typeparam name="T">The expected Exception Type</typeparam>

        /// <param name="code">A TestDelegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static T Catch<T>(TestDelegate code, string message) where T : System.Exception

        {

            return (T)Throws(new InstanceOfTypeConstraint(typeof(T)), code, message);

        }



        /// <summary>

        /// Verifies that a delegate throws an exception of a certain Type

        /// or one derived from it when called and returns it.

        /// </summary>

        /// <typeparam name="T">The expected Exception Type</typeparam>

        /// <param name="code">A TestDelegate</param>

        public static T Catch<T>(TestDelegate code) where T : System.Exception

        {

            return (T)Throws(new InstanceOfTypeConstraint(typeof(T)), code);

        }

#endif

        #endregion



        #region DoesNotThrow



        /// <summary>

        /// Verifies that a delegate does not throw an exception

        /// </summary>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        /// <param name="args">Arguments to be used in formatting the message</param>

        public static void DoesNotThrow(TestDelegate code, string message, params object[] args)

        {

            try

            {

                code();

            }

            catch (Exception ex)

            {

                TextMessageWriter writer = new TextMessageWriter(message, args);

                writer.WriteLine("Unexpected exception: {0}", ex.GetType());

                Assert.Fail(writer.ToString());

            }

        }



        /// <summary>

        /// Verifies that a delegate does not throw an exception.

        /// </summary>

        /// <param name="code">A TestSnippet delegate</param>

        /// <param name="message">The message that will be displayed on failure</param>

        public static void DoesNotThrow(TestDelegate code, string message)

        {

            DoesNotThrow(code, message, null);

        }



        /// <summary>

        /// Verifies that a delegate does not throw an exception.

        /// </summary>

        /// <param name="code">A TestSnippet delegate</param>

        public static void DoesNotThrow(TestDelegate code)

        {

            DoesNotThrow(code, string.Empty, null);

        }



        #endregion



        #endregion



        #region True



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void True(bool condition, string message, params object[] args)

        {

            Assert.That(condition, Is.True, message, args);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void True(bool condition, string message)

        {

            Assert.That(condition, Is.True, message, null);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        public static void True(bool condition)

        {

            Assert.That(condition, Is.True, null, null);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void IsTrue(bool condition, string message, params object[] args)

        {

            Assert.That(condition, Is.True, message, args);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void IsTrue(bool condition, string message)

        {

            Assert.That(condition, Is.True, message, null);

        }



        /// <summary>

        /// Asserts that a condition is true. If the condition is false the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary>

        /// <param name="condition">The evaluated condition</param>

        public static void IsTrue(bool condition)

        {

            Assert.That(condition, Is.True, null, null);

        }



        #endregion



        #region False



        /// <summary>

        /// Asserts that a condition is false. If the condition is true the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void False(bool condition, string message, params object[] args)

        {

            Assert.That(condition, Is.False, message, args);

        }



        /// <summary>

        /// Asserts that a condition is false. If the condition is true the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void False(bool condition, string message)

        {

            Assert.That(condition, Is.False, message, null);

        }



        /// <summary>

        /// Asserts that a condition is false. If the condition is true the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        public static void False(bool condition)

        {

            Assert.That(condition, Is.False, null, null);

        }



        /// <summary>

        /// Asserts that a condition is false. If the condition is true the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void IsFalse(bool condition, string message, params object[] args)

        {

            Assert.That(condition, Is.False, message, args);

        }



        /// <summary>

        /// Asserts that a condition is false. If the condition is true the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void IsFalse(bool condition, string message)

        {

            Assert.That(condition, Is.False, message, null);

        }



        /// <summary>

        /// Asserts that a condition is false. If the condition is true the method throws

        /// an <see cref="AssertionException"/>.

        /// </summary> 

        /// <param name="condition">The evaluated condition</param>

        public static void IsFalse(bool condition)

        {

            Assert.That(condition, Is.False, null, null);

        }



        #endregion



        #region NotNull



        /// <summary>

        /// Verifies that the object that is passed in is not equal to <code>null</code>

        /// If the object is <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void NotNull(object anObject, string message, params object[] args)

        {

            Assert.That(anObject, Is.Not.Null, message, args);

        }



        /// <summary>

        /// Verifies that the object that is passed in is not equal to <code>null</code>

        /// If the object is <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void NotNull(object anObject, string message)

        {

            Assert.That(anObject, Is.Not.Null, message, null);

        }



        /// <summary>

        /// Verifies that the object that is passed in is not equal to <code>null</code>

        /// If the object is <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        public static void NotNull(object anObject)

        {

            Assert.That(anObject, Is.Not.Null, null, null);

        }



        /// <summary>

        /// Verifies that the object that is passed in is not equal to <code>null</code>

        /// If the object is <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void IsNotNull(object anObject, string message, params object[] args)

        {

            Assert.That(anObject, Is.Not.Null, message, args);

        }



        /// <summary>

        /// Verifies that the object that is passed in is not equal to <code>null</code>

        /// If the object is <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void IsNotNull(object anObject, string message)

        {

            Assert.That(anObject, Is.Not.Null, message, null);

        }



        /// <summary>

        /// Verifies that the object that is passed in is not equal to <code>null</code>

        /// If the object is <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        public static void IsNotNull(object anObject)

        {

            Assert.That(anObject, Is.Not.Null, null, null);

        }



        #endregion



        #region Null



        /// <summary>

        /// Verifies that the object that is passed in is equal to <code>null</code>

        /// If the object is not <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void Null(object anObject, string message, params object[] args)

        {

            Assert.That(anObject, Is.Null, message, args);

        }



        /// <summary>

        /// Verifies that the object that is passed in is equal to <code>null</code>

        /// If the object is not <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void Null(object anObject, string message)

        {

            Assert.That(anObject, Is.Null, message, null);

        }



        /// <summary>

        /// Verifies that the object that is passed in is equal to <code>null</code>

        /// If the object is not <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        public static void Null(object anObject)

        {

            Assert.That(anObject, Is.Null, null, null);

        }



        /// <summary>

        /// Verifies that the object that is passed in is equal to <code>null</code>

        /// If the object is not <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void IsNull(object anObject, string message, params object[] args)

        {

            Assert.That(anObject, Is.Null, message, args);

        }



        /// <summary>

        /// Verifies that the object that is passed in is equal to <code>null</code>

        /// If the object is not <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void IsNull(object anObject, string message)

        {

            Assert.That(anObject, Is.Null, message, null);

        }



        /// <summary>

        /// Verifies that the object that is passed in is equal to <code>null</code>

        /// If the object is not <code>null</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="anObject">The object that is to be tested</param>

        public static void IsNull(object anObject)

        {

            Assert.That(anObject, Is.Null, null, null);

        }



        #endregion



        #region IsNaN



        /// <summary>

        /// Verifies that the double that is passed in is an <code>NaN</code> value.

        /// If the object is not <code>NaN</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="aDouble">The value that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void IsNaN(double aDouble, string message, params object[] args)

        {

            Assert.That(aDouble, Is.NaN, message, args);

        }



        /// <summary>

        /// Verifies that the double that is passed in is an <code>NaN</code> value.

        /// If the object is not <code>NaN</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="aDouble">The value that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void IsNaN(double aDouble, string message)

        {

            Assert.That(aDouble, Is.NaN, message, null);

        }



        /// <summary>

        /// Verifies that the double that is passed in is an <code>NaN</code> value.

        /// If the object is not <code>NaN</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="aDouble">The value that is to be tested</param>

        public static void IsNaN(double aDouble)

        {

            Assert.That(aDouble, Is.NaN, null, null);

        }



#if NET_2_0

        /// <summary>

        /// Verifies that the double that is passed in is an <code>NaN</code> value.

        /// If the object is not <code>NaN</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="aDouble">The value that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        /// <param name="args">Array of objects to be used in formatting the message</param>

        public static void IsNaN(double? aDouble, string message, params object[] args)

        {

            Assert.That(aDouble, Is.NaN, message, args);

        }



        /// <summary>

        /// Verifies that the double that is passed in is an <code>NaN</code> value.

        /// If the object is not <code>NaN</code> then an <see cref="AssertionException"/>

        /// is thrown.

        /// </summary>

        /// <param name="aDouble">The value that is to be tested</param>

        /// <param name="message">The message to display in case of failure</param>

        public static void IsNaN(double? aDouble, string message)

        {

            Assert.That(aDouble, Is.NaN, message, null);

        }



        /// <summary>

        /// Ve…

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