public static void ClipExpectedAndActual_StringsFitInLine()
{
string eClip = s52;
string aClip = "abcde";
MsgUtils.ClipExpectedAndActual(ref eClip, ref aClip, 52, 5);
Assert.That(eClip, Is.EqualTo(s52));
Assert.That(aClip, Is.EqualTo("abcde"));
eClip = s52;
aClip = "abcdefghijklmno?qrstuvwxyz";
MsgUtils.ClipExpectedAndActual(ref eClip, ref aClip, 52, 15);
Assert.That(eClip, Is.EqualTo(s52));
Assert.That(aClip, Is.EqualTo("abcdefghijklmno?qrstuvwxyz"));
}
/// <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 void DisplayCollectionTypesAndSizes(MessageWriter writer, ICollection expected, ICollection actual, int indent)
{
string sExpected = MsgUtils.GetTypeRepresentation(expected);
//if (!(expected is Array))
// sExpected += string.Format(" with {0} elements", expected.Count);
string sActual = MsgUtils.GetTypeRepresentation(actual);
//if (!(actual is Array))
// sActual += string.Format(" with {0} elements", actual.Count);
if (sExpected == sActual)
{
writer.WriteMessageLine(indent, CollectionType_1, sExpected);
}
else
{
writer.WriteMessageLine(indent, CollectionType_2, sExpected, sActual);
}
}
private static object GetValueFromCollection(ICollection collection, int index)
{
Array array = collection as Array;
if (array != null && array.Rank > 1)
{
return(array.GetValue(MsgUtils.GetArrayIndicesFromCollectionIndex(array, index)));
}
if (collection is IList)
{
return(((IList)collection)[index]);
}
foreach (object item in collection)
{
if (--index < 0)
{
return(item);
}
}
return(null);
}
private void DisplayTypesAndSizes(MessageWriter writer, IEnumerable expected, IEnumerable actual, int indent)
{
string text = MsgUtils.GetTypeRepresentation(expected);
if (expected is ICollection && !(expected is Array))
{
text += $" with {((ICollection)expected).Count} elements";
}
string text2 = MsgUtils.GetTypeRepresentation(actual);
if (actual is ICollection && !(actual is Array))
{
text2 += $" with {((ICollection)actual).Count} elements";
}
if (text == text2)
{
writer.WriteMessageLine(indent, CollectionType_1, text);
}
else
{
writer.WriteMessageLine(indent, CollectionType_2, text, text2);
}
}
/// <summary>
/// Provides standard description of what the constraint tests
/// based on comparison text.
/// </summary>
/// <param name="comparisonText">Describes the comparison being tested, throws <see cref="ArgumentNullException"/>
/// if null</param>
/// <exception cref="ArgumentNullException">Is thrown when null passed to a method</exception>
protected string DefaultDescription(string comparisonText)
{
if (comparisonText == null)
{
throw new ArgumentNullException(nameof(comparisonText), "Comparison text can not be null");
}
StringBuilder sb = new StringBuilder(comparisonText);
sb.Append(MsgUtils.FormatValue(_expected));
if (_tolerance != null && !_tolerance.IsUnsetOrDefault)
{
sb.Append(" within ");
sb.Append(MsgUtils.FormatValue(_tolerance.Amount));
if (_tolerance.Mode == ToleranceMode.Percent)
{
sb.Append(" percent");
}
}
return(sb.ToString());
}
/// <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 void DisplayFailurePoint(MessageWriter writer, IEnumerable expected, IEnumerable actual, NUnitEqualityComparer.FailurePoint 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.Position);
if (useOneIndex)
{
writer.WriteMessageLine(indent, ValuesDiffer_1, MsgUtils.GetArrayIndicesAsString(expectedIndices));
}
else
{
int[] actualIndices = MsgUtils.GetArrayIndicesFromCollectionIndex(actual, failurePoint.Position);
writer.WriteMessageLine(indent, ValuesDiffer_2,
MsgUtils.GetArrayIndicesAsString(expectedIndices), MsgUtils.GetArrayIndicesAsString(actualIndices));
}
}
public static void FormatValue_FloatIsWrittenWithTrailingF()
{
Assert.That(MsgUtils.FormatValue(0.5f), Is.EqualTo("0.5f"));
}
public static void FormatValue_IntegerIsWrittenAsIs()
{
Assert.That(MsgUtils.FormatValue(42), Is.EqualTo("42"));
}
public static void FormatValue_ContextualCustomFormatterInvoked_FactoryArg()
{
TestContext.AddFormatter(next => val => (val is CustomFormattableType) ? "custom_formatted" : next(val));
Assert.That(MsgUtils.FormatValue(new CustomFormattableType()), Is.EqualTo("custom_formatted"));
}
public static void EscapesNullControlChars()
{
Assert.That(MsgUtils.EscapeNullCharacters("\0"), Is.EqualTo("\\0"));
}
public static void FormatValue_DateTimeTest()
{
Assert.That(MsgUtils.FormatValue(new DateTime(2007, 7, 4, 9, 15, 30, 123)), Is.EqualTo("2007-07-04 09:15:30.123"));
}
public static void FormatValue_DecimalIsWrittenToTwentyNineDigits()
{
Assert.That(MsgUtils.FormatValue(12345678901234567890123456789m), Is.EqualTo("12345678901234567890123456789m"));
}
public static void FormatValue_DecimalIsWrittenWithTrailingM()
{
Assert.That(MsgUtils.FormatValue(0.5m), Is.EqualTo("0.5m"));
}
public static void FormatValue_DoubleIsWrittenToSeventeenDigits()
{
string s = MsgUtils.FormatValue(0.33333333333333333333333333333333333333333333d);
Assert.That(s.Length, Is.EqualTo(20)); // add 3 for leading 0, decimal and trailing d
}
public static void FormatValue_DoubleIsWrittenWithTrailingD()
{
Assert.That(MsgUtils.FormatValue(0.5d), Is.EqualTo("0.5d"));
}
public static void EscapeNullCharInString()
{
Assert.That(MsgUtils.EscapeControlChars("\0"), Is.EqualTo("\\0"));
}
public static void DoNotEscapeNonNullControlChars(string input, string expected)
{
Assert.That(MsgUtils.EscapeNullCharacters(input), Is.EqualTo(expected));
}
public static void FormatValue_DateTimeOffsetTest()
{
Assert.That(MsgUtils.FormatValue(new DateTimeOffset(2007, 7, 4, 9, 15, 30, 123, TimeSpan.FromHours(8))), Is.EqualTo("2007-07-04 09:15:30.123+08:00"));
}
public static void TestClipString(string input, int max, int start, string result)
{
System.Console.WriteLine("input= \"{0}\"", input);
System.Console.WriteLine("result= \"{0}\"", result);
Assert.That(MsgUtils.ClipString(input, max, start), Is.EqualTo(result));
}
public static void FormatValue_CharTest(char c, string expected)
{
Assert.That(MsgUtils.FormatValue(c), Is.EqualTo(expected));
}
public static void FormatValue_ContextualCustomFormatterInvoked_FormatterArg()
{
TestContext.AddFormatter <CustomFormattableType>(val => "custom_formatted_using_type");
Assert.That(MsgUtils.FormatValue(new CustomFormattableType()), Is.EqualTo("custom_formatted_using_type"));
}
public static void FormatValue_KeyValuePairTest(object key, object value, string expectedResult)
{
string s = MsgUtils.FormatValue(new KeyValuePair <object, object>(key, value));
Assert.That(s, Is.EqualTo(expectedResult));
}
public static void FormatValue_StringIsWrittenWithQuotes()
{
Assert.That(MsgUtils.FormatValue("Hello"), Is.EqualTo("\"Hello\""));
}
public static void FormatValue_EmptyValueTupleTest()
{
string s = MsgUtils.FormatValue(ValueTuple.Create());
Assert.That(s, Is.EqualTo("()"));
}
public void SimpleTolerance_Failure(object actual, object expected, object tolerance)
{
var ex = Assert.Throws <AssertionException>(
() => Assert.That(actual, Is.LessThan(expected).Within(tolerance)),
"Assertion should have failed");
Assert.That(ex.Message, Contains.Substring("Expected: less than " + MsgUtils.FormatValue(expected) + " within " + MsgUtils.FormatValue(tolerance)));
}
public static void FormatValue_OneElementTupleTest()
{
string s = MsgUtils.FormatValue(Tuple.Create("Hello"));
Assert.That(s, Is.EqualTo("(\"Hello\")"));
}
/// <summary>
/// Construct a TypeConstraint for a given Type
/// </summary>
/// <param name="type">The expected type for the constraint</param>
/// <param name="descriptionPrefix">Prefix used in forming the constraint description</param>
protected TypeConstraint(Type type, string descriptionPrefix)
: base(type)
{
this.expectedType = type;
this.Description = descriptionPrefix + MsgUtils.FormatValue(expectedType);
}
public static void FormatValue_ThreeElementsTupleTest()
{
string s = MsgUtils.FormatValue(Tuple.Create("Hello", 123, 'a'));
Assert.That(s, Is.EqualTo("(\"Hello\", 123, 'a')"));
}
public void PercentTolerance_Failure(object actual, object expected, object tolerance)
{
var ex = Assert.Throws <AssertionException>(
() => Assert.That(actual, Is.LessThanOrEqualTo(expected).Within(tolerance).Percent),
"Assertion should have failed");
Assert.That(ex.Message, Contains.Substring("Expected: less than or equal to " + MsgUtils.FormatValue(expected) + " within " + MsgUtils.FormatValue(tolerance) + " percent"));
}
public static void EscapeControlCharsTest(string input, string expected)
{
Assert.That(MsgUtils.EscapeControlChars(input), Is.EqualTo(expected));
}