[antlr-interest] Re: Questions about learning ANTLR
Hensley, Richard
richard.hensley at mckesson.com
Mon Oct 7 08:51:44 PDT 2002
Bogdan,
No, I had not tried the tester. I'm examining it now to see how I could
integrate it.
I found it very interesting. I especially liked the part that allows me
to specify which rule to test because I have a tendancy to test my
grammars from the ground up, starting with the simplest rules. Testing
the simplest rules first is how my testing currently works.
Richard
-----Original Message-----
From: Bogdan Mitu [ mailto:bogdan_mt at yahoo.com
<mailto:bogdan_mt at yahoo.com> ]
Sent: Sunday, October 06, 2002 8:24 AM
To: antlr-interest at yahoogroups.com
Subject: RE: [antlr-interest] Re: Questions about learning ANTLR
--- "Hensley, Richard" <richard.hensley at mckesson.com> wrote:
...
> I use junit by creating a number of files that have both valid and
> invalid input. For the invalid input ones, I examine the returned
> exception to make sure the right one happened, and that it happened in
> the right place. For the valid ones, I always have a big file that
> contains most cases from my grammar. If the big file throws an
> exception, I print out the antlr exception, and fail the test. I also
> have some smaller files, after they parse I programmatically examine
the
> AST to make sure that it is structured the way I expect.
Hi Richard,
Have you tried this?
http://groups.yahoo.com/group/antlr-interest/files/tester.zip
<http://groups.yahoo.com/group/antlr-interest/files/tester.zip>
You may find it useful.
Best regards,
Bogdan
> One thing I do for my test data files is that I use the following Java
> statement:
>
> InputStream in =
> getClass().getClassLoader().getResourceAsStream(
> "testdata/viewstest1");
>
> This allows me to place my test data in the class path, instead of
some
> absolute or relative file path. Just my preferece, but it works for
me.
> By the way, this only works if the directory where testdata/ is
located
> is part of the classpath.
>
> Here is the testing target from my ant file:
>
> <target name="test-java" depends="env,check-resources,build-java">
> <delete>
> <fileset dir="${test.output}" includes="*" />
> </delete>
> <junit printsummary="yes">
> <classpath>
> <path refid="classpath" />
> <pathelement path="${testdata.classpath}" />
>
> </classpath>
> <formatter type="plain" />
> <batchtest todir="${test.output}">
> <fileset dir="${source.dir}">
> <include name="**/test/*Test.java" />
> </fileset>
> </batchtest>
> </junit>
> </target>
>
> Notice that I always package my tests as a subpackage to the one being
> tested. I also name my tests according to the standard of <class being
> tested>Test.java. I also added the testdata/ to my classpath so the
> getResourceAsStream() routines work.
>
> -----Original Message-----
> From: micheal_jor [ mailto:open.zone at virgin.net
<mailto:open.zone at virgin.net>
> < mailto:open.zone at virgin.net <mailto:open.zone at virgin.net> > ]
> Sent: Friday, October 04, 2002 4:14 PM
> To: antlr-interest at yahoogroups.com
> Subject: [antlr-interest] Re: Questions about learning ANTLR
>
>
> Sorry to butt in Richard but I had a few questions once I read your
> post.....
>
> > In general, the tokens { } section is for literal
> > strings that occur in the stream exactly as specified, or for
> imagninary
> > tokens required to construct a abstract syntax tree (AST).
>
> What about keywords?. I wondered why the java.g for example didn't
> define keywords like "class", "final" etc as tokens.
>
> > When I was developing my parser, I would make one simple change at a
> > time, build the parser, execute a my junit test suite. I created an
> ant
> > build.xml script that made this simple.
>
> How do you use junit to test a parser?. Care to share more details on
> this please?.
>
> Cheers!
>
> Micheal
>
>
>
>
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>
>
>
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