/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <param name="writer">The writer on which the description is displayed</param>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.Write( Resources.Empty );
}
/// <summary>
/// Write the actual value for a failing constraint test to a
/// MessageWriter. TypeCOnstraints override this method to write the
/// name of the type.
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the actual value is displayed</param>
public override void WriteActualValueTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WriteActualValue( Actual == null ? null : Actual.GetType() );
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( Resources.SameAs );
writer.WriteExpectedValue( _expected );
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( Resources.StringContaining );
writer.WriteExpectedValue( _expected );
if ( CaseInsensitive )
{
writer.WriteModifier( Resources.IgnoringCase );
}
}
/// <summary>
/// Write description of this constraint
/// </summary>
/// <param name="writer">The MessageWriter to write to</param>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WriteExpectedValue( _expected );
if ( Tolerance != null )
{
writer.WriteConnector( "+/-" );
writer.WriteExpectedValue( Tolerance );
}
if ( CaseInsensitive )
{
writer.WriteModifier( Resources.IgnoringCase );
}
}
/// <summary>
/// Write a failure message. Overridden to provide custom failure
/// messages for EqualConstraint.
/// </summary>
/// <param name="writer">The MessageWriter to write to</param>
public override void WriteMessageTo( MessageWriter writer )
{
DisplayDifferences( writer, _expected, Actual, 0 );
}
/// <summary>
/// Write a description of this constraint to a MessageWriter
/// </summary>
/// <param name="writer">The writer on which the description is displayed</param>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( Resources.NoItem );
BaseConstraint.WriteDescriptionTo( writer );
}
/// <summary>
/// Write the description of this constraint to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer"></param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WriteExpectedValue( ExpectedType );
}
/// <summary>
/// Displays the differences.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="expected">The expected.</param>
/// <param name="actual">The actual.</param>
/// <param name="depth">The depth.</param>
private void DisplayDifferences( MessageWriter writer, object expected, object actual, int depth )
{
if ( expected is string && actual is string )
{
DisplayStringDifferences( writer, (string) expected, (string) actual );
}
else if ( expected is ICollection && actual is ICollection )
{
DisplayCollectionDifferences( writer, expected as ICollection, actual as ICollection, depth );
}
else if ( expected is Stream && actual is Stream )
{
DisplayStreamDifferences( writer, expected as Stream, actual as Stream, depth );
}
else if ( Tolerance != null )
{
writer.DisplayDifferences( expected, actual, Tolerance );
}
else
{
writer.DisplayDifferences( expected, actual );
}
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( string.Format( Resources.PropertyName_1, _name ) );
BaseConstraint.WriteDescriptionTo( writer );
}
/// <summary>
/// Write the actual value for a failing constraint test to a
/// MessageWriter. The default implementation simply writes the raw
/// value of actual, leaving it to the writer to perform any formatting.
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the actual value is displayed</param>
public override void WriteActualValueTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
if ( _propertyExists )
{
writer.WriteActualValue( _propValue );
}
else
{
writer.WriteActualValue( Actual.GetType() );
}
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( Resources.Between );
writer.WriteExpectedValue( _low );
writer.WriteConnector( Resources.And );
writer.WriteExpectedValue( _high );
}
/// <summary>
/// Write the actual value for a failing constraint test to a
/// MessageWriter. The default implementation simply writes the raw
/// value of actual, leaving it to the writer to perform any formatting.
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the actual value is displayed</param>
public virtual void WriteActualValueTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WriteActualValue( _actual );
}
/// <summary> /// Write the constraint description to a MessageWriter /// </summary> /// <param name="writer">The writer on which the description is displayed</param> public abstract void WriteDescriptionTo( MessageWriter writer );
/// <summary>
/// Write the failure message to the MessageWriter provided as an
/// argument. The default implementation simply passes the constraint
/// and the actual value to the writer, which then displays the
/// constraint description and the value.
///
/// Constraints that need to provide additional details, such as where
/// the error occured can override this.
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The MessageWriter on which to display the message</param>
public virtual void WriteMessageTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.DisplayDifferences( this );
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( Resources.StringStartingWith );
writer.WriteExpectedValue( MsgUtils.ClipString( _expected, writer.MaxLineLength - 40, 0 ) );
if ( CaseInsensitive )
{
writer.WriteModifier( Resources.IgnoringCase );
}
}
/// <summary>
/// Displays the string differences.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="expected">The expected.</param>
/// <param name="actual">The actual.</param>
private void DisplayStringDifferences( MessageWriter writer, string expected, string actual )
{
int mismatch = MsgUtils.FindMismatchPosition( expected, actual, 0, CaseInsensitive );
if ( expected.Length == actual.Length )
{
writer.WriteMessageLine( Resources.StringsDiffer_1, expected.Length, mismatch );
}
else
{
writer.WriteMessageLine( Resources.StringsDiffer_2, expected.Length, actual.Length, mismatch );
}
writer.DisplayStringDifferences( expected, actual, mismatch, CaseInsensitive );
}
/// <summary>
/// Displays the stream differences.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="expected">The expected.</param>
/// <param name="actual">The actual.</param>
/// <param name="depth">The depth.</param>
private void DisplayStreamDifferences( MessageWriter writer, Stream expected, Stream actual, int depth )
{
if ( expected.Length == actual.Length )
{
long offset = _failurePoints[depth];
writer.WriteMessageLine( Resources.StreamsDiffer_1, expected.Length, offset );
}
else
{
writer.WriteMessageLine( Resources.StreamsDiffer_2, expected.Length, actual.Length );
}
}
/// <summary>
/// Write a description for this contraint to a MessageWriter
/// </summary>
/// <param name="writer">The MessageWriter to receive the description</param>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
Left.WriteDescriptionTo( writer );
writer.WriteConnector( Resources.Or );
Right.WriteDescriptionTo( writer );
}
/// <summary>
/// Display the failure information for two collections that did not
/// match.
/// </summary>
/// <param name="writer">The MessageWriter on which to display</param>
/// <param name="expected">The expected collection.</param>
/// <param name="actual">The actual collection</param>
/// <param name="depth">The depth of this failure in a set of nested collections</param>
private void DisplayCollectionDifferences( MessageWriter writer, ICollection expected, ICollection actual, int depth )
{
int failurePoint = _failurePoints.Count > depth ? (int) _failurePoints[depth] : -1;
DisplayCollectionTypesAndSizes( writer, expected, actual, depth );
if ( failurePoint >= 0 )
{
DisplayFailurePoint( writer, expected, actual, failurePoint, depth );
if ( failurePoint < expected.Count && failurePoint < actual.Count )
{
DisplayDifferences(
writer,
GetValueFromCollection( expected, failurePoint ),
GetValueFromCollection( actual, failurePoint ),
++depth );
}
else if ( expected.Count < actual.Count )
{
writer.Write( string.Format( " {0}: ", Resources.Extra ) );
writer.WriteCollectionElements( actual, failurePoint, 3 );
}
else
{
writer.Write(string.Format( " {0}: ", Resources.Missing ));
writer.WriteCollectionElements( expected, failurePoint, 3 );
}
}
}
public override void WriteDescriptionTo( MessageWriter writer )
{
writer.WriteExpectedValue( "same color as " + expectedColor.ToString() );
}
/// <summary>
/// Displays a single line showing the types and sizes of the expected
/// and actual collections or arrays. If both are identical, the value
/// is only shown once.
/// </summary>
/// <param name="writer">The MessageWriter on which to display</param>
/// <param name="expected">The expected collection or array</param>
/// <param name="actual">The actual collection or array</param>
/// <param name="indent">The indentation level for the message line</param>
private static void DisplayCollectionTypesAndSizes( MessageWriter writer, ICollection expected, ICollection actual, int indent )
{
string sExpected = MsgUtils.GetTypeRepresentation( expected );
if ( !( expected is Array ) )
{
sExpected += string.Format( CultureInfo.CurrentCulture, Resources.WithElements_1, expected.Count );
}
string sActual = MsgUtils.GetTypeRepresentation( actual );
if ( !( actual is Array ) )
{
sActual += string.Format( CultureInfo.CurrentCulture, Resources.WithElements_1, expected.Count );
}
if ( sExpected == sActual )
{
writer.WriteMessageLine( indent, Resources.CollectionType_1, sExpected );
}
else
{
writer.WriteMessageLine( indent, Resources.CollectionType_2, sExpected, sActual );
}
}
/// <summary>
/// Write a description of this constraint to a MessageWriter
/// </summary>
/// <exception cref="ArgumentNullException">if the message writer is null.</exception>
/// <param name="writer"></param>
public override void WriteDescriptionTo( MessageWriter writer )
{
if ( writer == null )
{
throw new ArgumentNullException( "writer" );
}
writer.WritePredicate( Resources.TypeAssignableFrom );
writer.WriteExpectedValue( ExpectedType );
}
/// <summary>
/// Displays a single line showing the point in the expected and actual
/// arrays at which the comparison failed. If the arrays have different
/// structures or dimensions, both values are shown.
/// </summary>
/// <param name="writer">The MessageWriter on which to display</param>
/// <param name="expected">The expected array</param>
/// <param name="actual">The actual array</param>
/// <param name="failurePoint">Index of the failure point in the underlying collections</param>
/// <param name="indent">The indentation level for the message line</param>
private static void DisplayFailurePoint( MessageWriter writer, ICollection expected, ICollection actual, int failurePoint, int indent )
{
Array expectedArray = expected as Array;
Array actualArray = actual as Array;
int expectedRank = expectedArray != null ? expectedArray.Rank : 1;
int actualRank = actualArray != null ? actualArray.Rank : 1;
bool useOneIndex = expectedRank == actualRank;
if ( expectedArray != null && actualArray != null )
{
for (int r = 1; r < expectedRank && useOneIndex; r++)
{
if ( expectedArray.GetLength( r ) != actualArray.GetLength( r ) )
{
useOneIndex = false;
}
}
}
int[] expectedIndices = MsgUtils.GetArrayIndicesFromCollectionIndex( expected, failurePoint );
if ( useOneIndex )
{
writer.WriteMessageLine( indent, Resources.ValuesDiffer_1, MsgUtils.GetArrayIndicesAsString( expectedIndices ) );
}
else
{
int[] actualIndices = MsgUtils.GetArrayIndicesFromCollectionIndex( actual, failurePoint );
writer.WriteMessageLine( indent,
Resources.ValuesDiffer_2,
MsgUtils.GetArrayIndicesAsString( expectedIndices ),
MsgUtils.GetArrayIndicesAsString( actualIndices ) );
}
}
/// <summary>
/// Write the constraint description to a MessageWriter
/// </summary>
/// <param name="writer">The writer on which the description is displayed</param>
public override void WriteDescriptionTo( MessageWriter writer )
{
RealConstraint.WriteDescriptionTo( writer );
}
/// <summary>
/// Write the actual value for a failing constraint test to a
/// MessageWriter.
/// </summary>
/// <param name="writer">The writer on which the actual value is displayed</param>
public override void WriteActualValueTo( MessageWriter writer )
{
BaseConstraint.WriteActualValueTo( writer );
}
