/// <summary>
/// Verifies that <paramref name="code"/> throws a particular exception when called.
/// </summary>
/// <param name="expectedExceptionType">The exception Type expected.</param>
/// <param name="code">The code to test.</param>
/// <param name="message">The message that will be displayed on failure.</param>
/// <param name="parameters">An array of parameters to use when formatting <paramref name="message"/>.</param>
/// <returns>The <see cref="Exception"/> thrown by <paramref name="code"/>.</returns>
public static Exception Throws(Type expectedExceptionType, Action code, string message, params object[] parameters)
{
Exception caughtException = null;
try
{
code();
}
catch (Exception ex)
{
caughtException = ex;
TypeAssert.IsType(caughtException, expectedExceptionType, message, parameters);
}
if (caughtException == null)
{
Assert.Fail(Resources.Assertion_ExceptionNotThrown, expectedExceptionType);
}
return(caughtException);
}
/// <summary>
/// Verifies that the exception <see cref="Exception.InnerException"/>
/// is of the specified type.
/// </summary>
/// <typeparam name="T">The source exception type.</typeparam>
/// <param name="exception">The exception whose <see cref="Exception.InnerException"/>
/// will be tested.</param>
/// <param name="innerException">The expected type of the inner exception.</param>
/// <returns>The original <see cref="Exception"/>.</returns>
public static T WithInnerException <T>(this T exception, Type innerException) where T : Exception
{
TypeAssert.IsType(exception.InnerException, innerException);
return(exception);
}
/// <summary>
/// Asserts that an object is of the given <see cref="Type"/>.
/// </summary>
/// <param name="value">The value to be tested.</param>
/// <param name="expectedType">The expected <see cref="Type"/>.</param>
/// <param name="message">A message to display. This message can be seen in the unit test results.</param>
public static void IsType(object value, Type expectedType, string message)
{
TypeAssert.IsType(value, expectedType, message, null);
}
/// <summary>
/// Asserts that an object is of the given <see cref="Type"/>.
/// </summary>
/// <param name="value">The value to be tested.</param>
/// <param name="expectedType">The expected <see cref="Type"/>.</param>
public static void IsType(object value, Type expectedType)
{
Requires.NotNull(value, "value");
TypeAssert.IsType(value, expectedType, Strings.Assertion_WrongType, expectedType, value.GetType());
}