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authorThorsten Lockert <tholo@cvs.openbsd.org>1996-10-18 03:37:12 +0000
committerThorsten Lockert <tholo@cvs.openbsd.org>1996-10-18 03:37:12 +0000
commit336031efaf37038aec514de88cc3ed6ac651bea9 (patch)
tree6e7eaec5ac8b729546276d6a0932387996c9e92c /gnu/usr.bin/cvs/TESTS
parentc99a600e0a1fec1e87fd19470c2c4cf7c8ce36ed (diff)
New release from Cyclic Software
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+To run the tests:
+
+ $ make check
+
+Note that if your /bin/sh doesn't support shell functions, you'll
+have to try something like this, where "/bin/sh5" is replaced by the
+pathname of a shell which handles normal shell functions:
+
+ $ make SHELL=/bin/sh5 check
+
+WARNING: This test can take quite a while to run, esp. if your
+disks are slow or over-loaded.
+
+You will probably need GNU expr, which is part of the GNU sh-utils
+package.
+
+If there is some unexpected output, that is a failure which can be
+somewhat hard to track down. Finding out which test is producing the
+output is not always easy. The newer tests (that is, ones using
+dotest*) will not have this problem, but there are many old tests
+which have not been converted.
+
+If running the tests produces the output "FAIL:" followed by the name
+of the test that failed, then the details on the failure are in the
+file check.log. If it says "exit status is " followed by a number,
+then the exit status of the command under test was not what the test
+expected. If it says "** expected:" followed by a regular expression
+followed by "** got:" followed by some text, then the regular
+expression is the output which the test expected, and the text is the
+output which the command under test actually produced. In some cases
+you'll have to look closely to see how they differ.
+
+If output from "make remotecheck" is out of order compared to what is
+expected (for example,
+
+ a
+ b
+ cvs foo: this is a demo
+
+is expected and
+
+ a
+ cvs foo: this is a demo
+ b
+
+is output), this is probably a well-known bug in the CVS server
+(search for "out-of-order" in src/server.c for a comment explaining
+the cause). It is a real pain in running the testsuite, but if you
+are lucky and/or your machine is fast and/or lightly loaded, you won't
+run into it. Running the tests again might succeed if the first run
+failed in this manner.
+
+For more information on what goes in check.log, and how the tests are
+run in general, you'll have to read sanity.sh. Depending on just what
+you are looking for, and how familiar you are with the Bourne shell
+and regular expressions, it will range from relatively straightforward
+to obscure.
+
+If you choose to submit a bug report based on tests failing, be
+aware that, as with all bug reports, you may or may not get a
+response, and your odds might be better if you include enough
+information to reproduce the bug, an analysis of what is going
+wrong (if you have the time to provide one), etc. The check.log
+file is the first place to look.
+
+ABOUT STDOUT AND STDERR
+***********************
+
+The sanity.sh test framework combines stdout and stderr and for tests
+to pass requires that output appear in the given order. Some people
+suggest that ordering between stdout and stderr should not be
+required, or to put it another way, that the out-of-order bug referred
+to above, and similar behaviors, should be considered features, or at
+least tolerable. The reasoning behind the current behavior is that
+having the output appear in a certain order is the correct behavior
+for users using CVS interactively--that users get confused if the
+order is unpredictable.
+
+ABOUT TEST FRAMEWORKS
+*********************
+
+People periodically suggest using dejagnu or some other test
+framework. A quick look at sanity.sh should make it clear that there
+are indeed reasons to be dissatisfied with the status quo. Ideally a
+replacement framework would achieve the following:
+
+1. Widely portable, including to a wide variety of unices, NT, Win95,
+OS/2, VMS, probably DOS and Win3, etc.
+
+2. Nicely match extended regular expressions of unlimited length.
+
+3. Be freely redistributable, and if possible already the kind of
+thing people might have already installed. The harder it is to get
+and install the framework, the less people will run the tests.
+
+The various contenders are:
+
+* Bourne shell and GNU expr (the status quo). Falls short on #1
+(we've only tried unix and NT, although MKS might help with other DOS
+mutants). #3 is pretty good (the main dependency is GNU expr which is
+fairly widely available).
+
+* Bourne shell with a new regexp matcher we would distribute with
+CVS. This means maintaining a regexp matcher and the makefiles which
+go with it. Not clearly a win over Bourne shell and GNU expr.
+
+* Bourne shell, and use sed to remove variable portions of output, and
+thus produce a form that can be compared with cmp or diff (this
+sidesteps the need for a full regular expression matcher as mentioned
+in #2 above). The C News tests are said to work this way. This would
+appear to rely on variable portions of output having a certain syntax
+and might spuriously recognize them out of context (this issue needs
+more investigation; it isn't clear how big a problem it is in
+practice). Same portability issues as the other choices based on the
+Bourne shell.
+
+* Dejagnu. This is overkill; most of dejagnu is either unnecessary
+(e.g. libraries for communicating with target boards) or undesirable
+(e.g. the code which stats every file in sight to find the tests). On
+the plus side, dejagnu is probably closer than any of the other
+choices to having everything which is needed already there.
+
+* Write our own small framework directly in tcl and distribute with
+CVS. The tests would look much like dejagnu tests, but we'd avoid the
+unnecessary baggage. The only dependency would be on tcl (that is,
+wish).
+
+* perl or python or <any other serious contenders here?>