Re: FileReader / BufferedReader Help

From:
Patricia Shanahan <pats@acm.org>
Newsgroups:
comp.lang.java.help
Date:
Tue, 07 Aug 2007 19:05:42 -0700
Message-ID:
<f9b8dp$1qtt$1@ihnp4.ucsd.edu>
DJ wrote:
....

I test electronic payment solutions and am in the process of automating
regression tests. Testing generates a sizeable number of text files from sql
queries and message logs. At the completion of a test run these results are
compared against known good baseline records. The comparisons are currently
being performed manually. In order to automate testing, comparisons need to
be automated as well. I could use filecompare or another third party
comparison app, but I need the ability to ignore certain lines (such as
those containig irrelevant date/time stamps).

....

I've got good results in the past with a slightly different approach to
this problem, normalization. Each file goes through a filter that checks
the fields that are expected to change, such as dates and times. If
detects any errors in a field it leaves it alone, but if the field looks
OK it gets replaced with a fixed value for that field, marked off with a
symbol that does not appear in a valid unnormalized output file.

Once that has been done, the files can be compared using any difference
program. I get the full range of features, such as control over how
differences are reported, without having to code them. Revision control
only shows meaningful differences between baselines, because I only
check-in normalized files.

Patricia

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