|
public static PrepareForRethrow ( |
||
| exception | ||
| return | ||
/// <summary>
/// This will be called before the actual assert method. Executes all methods in the context marked with the <see cref="PrerequisiteAttribute"/>.
/// </summary>
protected void RunPrerequisites()
{
var prerequisiteTestsToRun = TypeInvestigationService.GetPrerequisiteTestMethods(this.contextType);
foreach (var prerequisiteTest in prerequisiteTestsToRun)
{
try
{
prerequisiteTest.Invoke(this,
BindingFlags.Instance | BindingFlags.InvokeMethod | BindingFlags.NonPublic,
null,
null,
CultureInfo.InvariantCulture);
}
catch (TargetInvocationException ex)
{
var exception = ex.InnerException;
if (exception is AssertionException && exception.Message.TrimStart().StartsWith("Expected"))
{
var message = string.Format("{0}.{1}\r\n{2}", this.contextType.Name, prerequisiteTest.Name, exception.Message);
exception = new PrerequisiteFailureException(message);
throw exception;
}
throw ExceptionEnlightenment.PrepareForRethrow(exception);
}
}
}
/// <summary>
/// Sets a private field.
/// </summary>
/// <param name="target"> The target object. </param>
/// <param name="fieldName"> The name of the field to set. </param>
/// <param name="newValue"> The new value for the field. </param>
public static void SetPrivateField(object target,
string fieldName,
object newValue)
{
try
{
const BindingFlags BindingFlags = BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetField;
var type = target.GetType();
var fieldInfo = type.GetField(fieldName, BindingFlags);
if (fieldInfo == null)
{
throw new ArgumentException(string.Format(@"Field with name '{0}' not found on {1}", fieldName, type.Name), @"fieldName");
}
fieldInfo.SetValue(target,
newValue,
BindingFlags,
null,
CultureInfo.InvariantCulture);
}
catch (TargetInvocationException exception)
{
throw ExceptionEnlightenment.PrepareForRethrow(exception.InnerException);
}
}
/// <summary>
/// Sets a private property.
/// </summary>
/// <param name="target"> The target object. </param>
/// <param name="propertyName"> The name of the property to set. </param>
/// <param name="newValue"> The new value for the property. </param>
/// <exception cref="Exception">An exception, in case the property setter throws one.</exception>
public static void SetPrivateProperty(object target,
string propertyName,
object newValue)
{
try
{
var type = target.GetType();
var propertyInfo = type.GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance);
if (propertyInfo == null)
{
throw new ArgumentException(string.Format(@"Property with name '{0}' not found on {1}", propertyName, type.Name), @"propertyName");
}
// If the property does not belong directly to type, fetch again the property from the declaring type (otherwise we won't have the permission to set it).
if (propertyInfo.DeclaringType != null && propertyInfo.DeclaringType != type)
{
propertyInfo = propertyInfo.DeclaringType.GetProperty(propertyName, BindingFlags.NonPublic | BindingFlags.Instance);
}
propertyInfo.SetValue(target,
newValue,
BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetProperty,
null,
null,
CultureInfo.InvariantCulture);
}
catch (TargetInvocationException exception)
{
throw ExceptionEnlightenment.PrepareForRethrow(exception.InnerException);
}
}
/// <summary>
/// Constructs an object which has a private constructor.
/// </summary>
/// <param name="specification">
/// The specification object.
/// </param>
/// <param name="args">
/// The arguments to pass to the constructor.
/// </param>
/// <typeparam name="T">
/// The concrete object type.
/// </typeparam>
/// <returns>
/// The constructed object.
/// </returns>
/// <exception cref="Exception">
/// Returns any exception thrown by <see cref="Activator.CreateInstance(System.Type,System.Reflection.BindingFlags,System.Reflection.Binder,object[],System.Globalization.CultureInfo)"/>. Unwraps <see cref="TargetInvocationException"/>.
/// </exception>
public static T InstancePrivateObject <T>(this IContextSpecification specification,
params object[] args)
{
try
{
return((T)Activator.CreateInstance(typeof(T),
BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.CreateInstance,
null,
args,
null));
}
catch (TargetInvocationException exception)
{
throw ExceptionEnlightenment.PrepareForRethrow(exception.InnerException);
}
}
/// <summary>
/// The invoke private.
/// </summary>
/// <param name="target"> The target object which we want to invoke. </param>
/// <param name="methodName"> The method Name. </param>
/// <param name="args"> The args to pass to the method. </param>
public static void InvokePrivate(object target,
string methodName,
object[] args = null)
{
try
{
target.GetType().InvokeMember(methodName,
BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.InvokeMethod,
null,
target,
args);
}
catch (TargetInvocationException exception)
{
throw ExceptionEnlightenment.PrepareForRethrow(exception.InnerException);
}
}
/// <summary>
/// This will be called by the <see cref="InstrumentTestsAspect"/> aspect. Rethrows any exception logged during the test run.
/// </summary>
/// <param name="testMethodInfo">
/// The <see cref="MethodBase"/> instance that describes the executing test.
/// </param>
/// <param name="isExceptionResilient">
/// <c>true</c> if the test is set to ignore some exception. <c>false</c> otherwise.
/// </param>
void IContextSpecification.OnTestMethodCalled(MethodBase testMethodInfo,
bool isExceptionResilient)
{
var descriptionAttribute = testMethodInfo != null
? testMethodInfo.GetCustomAttributes(typeof(NUnit.Framework.DescriptionAttribute), false)
.Cast <NUnit.Framework.DescriptionAttribute>()
.SingleOrDefault()
: null;
var description = descriptionAttribute != null
? descriptionAttribute.Description
: "N/A";
Trace.WriteLine(headerFooter);
Trace.Write("** ");
Trace.WriteLine(description.Replace("\n", "\n** "));
OutputContextTypeName(this.contextType);
if (this.ThrownException == null)
{
return;
}
if (isExceptionResilient)
{
// we don't care about exceptions right now
var testMethodsInContext = TypeInvestigationService.GetTestMethods(this.contextType, true)
.Concat(TypeInvestigationService.GetAllContextSpecificationTypes(this.contextType)
.SelectMany(nestedType => TypeInvestigationService.GetTestMethods(nestedType, true)));
var expectedExceptions =
testMethodsInContext.SelectMany(testMethod => testMethod.GetCustomAttributes(typeof(ExpectedExceptionAttribute), false))
.Cast <ExpectedExceptionAttribute>()
.Select(attr => attr.ExpectedException)
.Distinct()
.ToArray();
if (expectedExceptions.Contains(null) || expectedExceptions.Any(exceptionTypeToIgnore => exceptionTypeToIgnore.IsInstanceOfType(this.ThrownException)))
{
// Exception is ignored
return;
}
}
throw ExceptionEnlightenment.PrepareForRethrow(this.ThrownException);
}