/// <summary>
/// Returns the diff as an assertion failure.
/// </summary>
/// <param name="expected">The expected fragment used to format the diff.</param>
/// <param name="actual">The actual fragment used to format the diff.</param>
/// <returns>The resulting assertion failure.</returns>
/// <exception cref="ArgumentNullException">Thrown if <paramref name="expected"/> or <paramref name="actual"/> is null.</exception>
public AssertionFailure ToAssertionFailure(NodeFragment expected, NodeFragment actual)
{
bool showActual = ((targets & DiffTargets.Actual) != 0);
bool showExpected = ((targets & DiffTargets.Expected) != 0);
var builder = new AssertionFailureBuilder(diffType.Description, new NullFormatter());
const XmlPathRenderingOptions options = XmlPathRenderingOptions.UseIndentation;
if (showActual && showExpected)
{
var actualFormatted = XmlPathRenderer.Run(path, actual, options);
var expectedFormatted = XmlPathRenderer.Run(path, expected, options);
builder.AddRawExpectedAndActualValuesWithDiffs(expectedFormatted, actualFormatted);
}
else if (showActual)
{
var actualFormatted = XmlPathRenderer.Run(path, actual, options);
builder.AddRawActualValue(actualFormatted);
}
else if (showExpected)
{
var expectedFormatted = XmlPathRenderer.Run(path, expected, options);
builder.AddRawExpectedValue(expectedFormatted);
}
return(builder.ToAssertionFailure());
}
public void ShowsExpectedAndActualValueWithDiffs_RepresentationalEquality()
{
AssertionFailureBuilder builder = new AssertionFailureBuilder("description");
builder.AddRawExpectedAndActualValuesWithDiffs(1, 1u);
Assert.AreElementsEqual(new[]
{
new AssertionFailure.LabeledValue("Expected Value & Actual Value", new StructuredText("1")),
new AssertionFailure.LabeledValue("Remark", "Both values look the same when formatted but they are distinct instances.")
}, builder.ToAssertionFailure().LabeledValues);
}
public void ShowsExpectedAndActualValueWithDiffs_ReferentialEquality()
{
const string str = "123";
AssertionFailureBuilder builder = new AssertionFailureBuilder("description");
builder.AddRawExpectedAndActualValuesWithDiffs(str, str);
Assert.AreElementsEqual(new[]
{
new AssertionFailure.LabeledValue("Expected Value & Actual Value", new StructuredText("\"123\"")),
new AssertionFailure.LabeledValue("Remark", "Both values are the same instance.")
}, builder.ToAssertionFailure().LabeledValues);
}
/// <summary>
/// Reports an assertion failure.
/// </summary>
/// <param name="testContext"></param>
/// <param name="testInfoData"></param>
/// <param name="testStepResult"></param>
public void Run(ITestContext testContext, TestInfoData testInfoData, TestStepResult testStepResult)
{
if (testStepResult.TestOutcome == TestOutcome.Failed)
{
MbUnitCppAssertionFailure failure = testStepResult.Failure;
var builder = new AssertionFailureBuilder(failure.Description);
if (failure.HasExpectedValue && failure.HasActualValue && failure.Diffing)
{
builder.AddRawExpectedAndActualValuesWithDiffs(failure.ExpectedValue, failure.ActualValue);
}
else if (failure.HasUnexpectedValue && failure.HasActualValue && failure.Diffing)
{
builder.AddRawLabeledValuesWithDiffs("Unexpected Value", failure.UnexpectedValue, "Actual Value", failure.ActualValue);
}
else
{
if (failure.HasExpectedValue)
{
builder.AddRawExpectedValue(failure.ExpectedValue);
}
if (failure.HasActualValue)
{
builder.AddRawActualValue(failure.ActualValue);
}
if (failure.HasUnexpectedValue)
{
builder.AddRawLabeledValue("Unexpected Value", failure.UnexpectedValue);
}
}
foreach (var extra in failure.ExtraLabeledValues)
{
builder.AddRawLabeledValue(extra.First, extra.Second);
}
if (failure.Message.Length > 0)
{
builder.SetMessage(failure.Message);
}
builder.SetStackTrace(testInfoData.GetStackTraceData(failure.Line));
builder.ToAssertionFailure().WriteTo(testContext.LogWriter.Failures);
}
}
public void TruncatesDiffContextWhenTooLong()
{
string expectedValue = "z" + new string('x', AssertionFailure.MaxFormattedValueLength) + "z";
string actualValue = "Z" + new string('x', AssertionFailure.MaxFormattedValueLength) + "Z";
AssertionFailureBuilder builder = new AssertionFailureBuilder("description");
builder.AddRawExpectedAndActualValuesWithDiffs(expectedValue, actualValue);
AssertionFailure failure = builder.ToAssertionFailure();
TestLog.Write(failure);
int split = AssertionFailureBuilder.CompressedDiffContextLength / 2;
Assert.AreEqual("\"z" + new string('x', split) + "..." + new string('x', split) + "z\"",
failure.LabeledValues[0].FormattedValue.ToString());
Assert.AreEqual("\"Z" + new string('x', split) + "..." + new string('x', split) + "Z\"",
failure.LabeledValues[1].FormattedValue.ToString());
}
public void ShowsExpectedAndActualValueWithDiffs_Difference()
{
AssertionFailureBuilder builder = new AssertionFailureBuilder("description");
builder.AddRawExpectedAndActualValuesWithDiffs("acde", "bcef");
DiffSet diffSet = DiffSet.GetDiffSet("\"acde\"", "\"bcef\"").Simplify();
StructuredTextWriter expectedValueWriter = new StructuredTextWriter();
diffSet.WriteTo(expectedValueWriter, DiffStyle.LeftOnly);
StructuredTextWriter actualValueWriter = new StructuredTextWriter();
diffSet.WriteTo(actualValueWriter, DiffStyle.RightOnly);
Assert.AreElementsEqual(new[]
{
new AssertionFailure.LabeledValue("Expected Value", expectedValueWriter.ToStructuredText()),
new AssertionFailure.LabeledValue("Actual Value", actualValueWriter.ToStructuredText())
}, builder.ToAssertionFailure().LabeledValues);
}