A callback for unittest errors in D. The user-supplied unittest handler will be called if one has been supplied, otherwise the error will be written to stderr.
The name of the file that signaled this error.
The line number on which this error occurred.
An error message supplied by the user.
The D Programming Language's Unofficial Docs
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A callback for unittest errors in D. The user-supplied unittest handler will be called if one has been supplied, otherwise the error will be written to stderr.