/// <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));
}
}
