public void TestDiffTester()
{
// Make sure the diff tester is working!
Assert.Equal(DiffUtil.DiffReport(
@"A
B
C
D
E
F",
@"A
1
B
C
E
2"),
@" A
++> 1
B
C
--> D
E
++> 2
--> F");
}
public static string GetAssertMessage <T>(
IEnumerable <T> expected,
IEnumerable <T> actual,
IEqualityComparer <T> comparer = null,
Func <T, string> itemInspector = null,
string itemSeparator = null,
string expectedValueSourcePath = null,
int expectedValueSourceLine = 0)
{
if (itemInspector == null)
{
if (typeof(T) == typeof(byte))
{
itemInspector = b => $"0x{b:X2}";
}
else
{
itemInspector = new Func <T, string>(obj => (obj != null) ? obj.ToString() : "<null>");
}
}
if (itemSeparator == null)
{
if (typeof(T) == typeof(byte))
{
itemSeparator = ", ";
}
else
{
itemSeparator = "," + Environment.NewLine;
}
}
var expectedString = string.Join(itemSeparator, expected.Take(10).Select(itemInspector));
var actualString = string.Join(itemSeparator, actual.Select(itemInspector));
var message = new StringBuilder();
message.AppendLine();
message.AppendLine("Expected:");
message.AppendLine(expectedString);
if (expected.Count() > 10)
{
message.AppendLine("... truncated ...");
}
message.AppendLine("Actual:");
message.AppendLine(actualString);
message.AppendLine("Differences:");
message.AppendLine(DiffUtil.DiffReport(expected, actual, itemSeparator, comparer, itemInspector));
if (TryGenerateExpectedSourceFileAndGetDiffLink(actualString, expected.Count(), expectedValueSourcePath, expectedValueSourceLine, out var link))
{
message.AppendLine(link);
}
return(message.ToString());
}
public static string GetAssertMessage <T>(
IEnumerable <T> expected,
IEnumerable <T> actual,
Func <T, T, bool> comparer = null,
Func <T, string> itemInspector = null,
string itemSeparator = null,
string expectedValueSourcePath = null,
int expectedValueSourceLine = 0)
{
if (itemInspector == null)
{
if (expected is IEnumerable <byte> )
{
itemInspector = b => $"0x{b:X2}";
}
else
{
itemInspector = new Func <T, string>(obj => (obj != null) ? obj.ToString() : "<null>");
}
}
if (itemSeparator == null)
{
if (expected is IEnumerable <byte> )
{
itemSeparator = ", ";
}
else
{
itemSeparator = ",\r\n";
}
}
var message = new StringBuilder();
message.AppendLine();
message.AppendLine("Actual:");
message.AppendLine(string.Join(itemSeparator, actual.Select(itemInspector)));
message.AppendLine();
message.AppendLine("Expected:");
message.AppendLine(string.Join(itemSeparator, expected.Select(itemInspector)));
message.AppendLine();
message.AppendLine("Diff:");
message.Append(DiffUtil.DiffReport(expected, actual, comparer, itemInspector, itemSeparator));
return(message.ToString());
}