[MRUNIT-185] IllegalFormatException for '%' in Output

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0.0
• Fix Version/s: 1.1.0
• Assignee: Unassigned
• Reporter: Joseph Beard
• Created: 22/Apr/13 18:08
• Updated: 23/Apr/13 18:18
• Resolved: 23/Apr/13 09:55

Description

In cases where the expected output does not match the actual output, the Errors class will treat the error message created by the TestDriver.checkTypesAndLogError(...) method as a format string. If either the Expected or Actual Output value contains a '%' character, the String.format will result in some type of IllegalFormatException. In my case, I received an UnknownFormatConversionException with "%D" in the expected output.

Fortunately, this behavior is only triggered if the unit test is in error, but it can make tracking down the source of the issue hard to find.