Software Carpentry QMTest Testing Tool Released 63
soundsop writes: "The first tool resulting from the winners of a design competition by the Software Carpentry project has been released. The QMTest tool is a testing tool to replace software such as XUnit, Expect and DejaGnu. An issue tracking tool, called QMTrack (a la Bugzilla) is forthcoming. It looks like the winning design proposals for a config tool (autoconf replacement) and a build tool (make replacement) are not being implemented."
What exactly does this do? (Score:1, Redundant)
Re:What exactly does this do? (Score:1)
Re:What exactly does this do? (Score:5, Insightful)
This is what Webopedia [webopedia.com] has to say on the subject:
A Windows version, too! (Score:3, Informative)
Honorable mentions (Score:2, Informative)
I don't know whether it one or not... (Score:1)
...but a tool called SCons [scons.org] has just been released. It is based on the ScCons tool that was in the Software Carpentry Contest, and is written by the same folk.
Replacing Expect? It's not a testing tool. (Score:4, Informative)
Kudos to the QMTest folks; I'm looking forward
to the fruits of the software carpentry project. But, as Expect is an
automation tool, not simply a testing tool, I don't think it'll exactly be "replaced."
The well-known DejaGNU suite, written in Expect, might be a candidate for replacement, though.
I use Expect all the time, but have never used it for testing. I tried DejaGNU a time or two,
but never could figure it out. If you like Expect and like Perl, you might check out the
Expect.pm [sourceforge.net] module project; it's really come to fruition recently, and
I've finally started doing that kind of thing in Perl instead of TCL/Expect.
Re:Replacing Expect? It's not a testing tool. (Score:1)
One use I found for it is to put bash-like command-line editing on tools with lack command-line editing like Oracle's sqlplus. Just use it in conjunction with Term::ReadLine::Gnu [engelschall.com] and have ReadLine send commands to an Expect-controlled process. Sqlplus is finally usable!
-Bruce
Re:Replacing Expect? It's not a testing tool. (Score:1)
sqlplus w/ command-line editing? You are the man!
XUnit still is more flexible (Score:3, Informative)
liB
How do you test for non-text/numerical results? (Score:1)
Is there any way to test other software scenarioes (ie GUI applications like page rengering, user interface, program response, program flow logic)? It seems that the most bugs often arise from an error in the program logic. Does the "real world" test programs other than having many people use the program and filling bug reports?
Re:How do you test for non-text/numerical results? (Score:2)
The "real world" isn't afraid to spend a little bit of money.
GUI testing (Score:2)
- expensive, and
- invaluable for really testing a GUI and keeping it tested over the long term. It's even worth getting only a couple of licenses for a group of developers rather than go entirely without.
I've seen a lot of other automated approaches consed up for testing various GUIs, but nothing replaces a tool that can actually go out and interact with the GUI directly through the windowing system. The simplest tools will let you record mouse and keyboard events; the usable ones have enough understanding of the underlying interface primitives to reasonably abstract your actions. E.g., figure out and record that you're pressing button "foo" in box "bar" rather than clicking at 80,130, or that you're editing in a text entry box rather than just getting a bunch of keyboard events, so that when you reformat a dialog box the test case doesn't break. That encourages developers to do the right thing and build up and maintain *lots* of test cases; there are a lot more stupid corners for testing in a GUI app than the command line equivalent.Re:How do you test for non-text/numerical results? (Score:1)
Easy answer: yes it is. We are looking at Unit Testing here. Unit Testing is the more general term, regression testing is a special case of unit testing (you aim to prevent breaking features you know they worked allready).
A Unit is usualy a single source file, you test all functions in that source file.
A Unit is also a single class and you test all methods of that class (well, oo testing is unfortunatly a bit mroe complicated then structural code testing ... so I leave it out here, moderators like to mod me redundant for some reason :-) )
See below ...
Is there any way to test other software scenarioes (ie GUI applications like page rengering, user interface, program response,
Yes, if you test several Units, a GUI one, a logic one and a DB access one together this is called an Integration Test.
You have the same pattern to go for: describe inputs, and expected outputs/behaviour (if you check wethere a given GUI widget is visible and its centered on the screen, its coordinates and is isVisible() flag are the output!)
Run a test which feeds the input into your softwater, read the desired properties afterwards and compare them with your expected values.
program flow logic)? It seems that the most bugs often arise from an error in the program logic.
Yes, most probelms stem form program flow. If you have a function like:
max(a,b) { if (a > b) return a; else return b; }
You need to define test data: input and expected output, which forces once to evaluate the if part and once the else part of the if. So errors like:
max(a,b) { if (a > b) return b; else return b; }
should be found.
Does the "real world" test programs other than having many people use the program and filling bug reports?
Well, *YES* they do. But, a hughe number of companies does not realy do that. Otherwise breaking web pages never would occure :-)
A well set up quality management saves enourmous costs and time. Unfortunatly m,ost people do not like to invest the time needed to learn how to work in a software proces and to learn how to apply the concepts and the tools.
A well defined software process makes software production ten times cheaper, erm .. it reduces costs to 10% of the usual costs. Or other way around your: productivity is 10 times higher then the one of your neighbour.
The usual link I poste here: http://www.sei.cmu.edu/cmm/cmms/cmms.html
Look under SW-CMM.
Unfortunatly only about 5 departments (not companies! departments!) world wide are believed to have a such high productivity!
Regards,
angel'o'sphere
Windows Version does not support Python 2.2 (Score:1)
JUnit (Score:1)
an HTML user interface (Score:4, Insightful)
First, I like writing test cases in a text editor, programmatically. It's tedious enough writing them in the first place, at least I can cut-and-paste and modify them quickly in an editor. Going through a web GUI does not seem like it's very efficient. Also, I don't particularly like using anything other than the implementation language and shell scripts for test cases; otherwise, people receiving the source code need to install additional tools. I also don't see anything in the white paper about support for the hard parts of testing, like configuration and compilation management for lots of extra C/C++ code, GUI testing, or web site testing (the latter usually require recording and playback).
Altogether, I'm not sure I ever felt I needed something like what QMTest seems to be doing. And the things that are actually difficult to test, it doesn't seem to provide useful support for. Can someone explain what I'm missing?
dejagnu (Score:2, Interesting)
This was also one of my concerns. Though I haven't yet successfully downloaded the source from this rather slow site, I do note that it also supports a command line interface.
I'm currently wrestling with dejagnu. [gnu.org] Although the documentation of this tool seems to assume a familiarity with autoconf that I do not yet have, it is simple enough to use once you have set up the project test suite. I'd say it's probably pretty hard to beat. Expect is a pretty good tool upon which to base a test suite.
What's important in a test system (Score:2)
I haven't looked at QMTest, so I'm going by what $parent says. I have written a whole lotta tests, as well as designed and coded testing frameworks.
In my opinion, the number one criteria for judging a testing system is: it must be dead simple to write and maintain test cases. Because writing tests (for your obviously immaculate code) is annoying enough, and if the tool gets in your way, forget it--it just won't happen. This is probably especially true for volunteer projects, although it applies in no small measure to closed shops.
So, you can invent a fancy aparatus and even a "theory of testing". But your system had better not require learning much aparatus, or any theory. Keep in mind when tempted to create or use a fancy system, that most of the value of a test run is in the first bit of information: did it work, or not? Anything after that is gravy.
So if QMTest requires a lot of infrastructure and tools and web UI's, I'd guess it's probably too heavy. Correctness testing is something that should stay out of your way. Assuming you keep your codebase working--right? :-)
I hope the software is better (Score:2, Interesting)
If they can't explain exactly what you get with QMTest in a few paragraphs, then it is probably not worth my time. Thankfully I'm already quite pleased with JUnit, RubyUnit and CppUnit.
However, if other slashdot readers have more patience with the project - I encourage them to write a summary of their findings here!
Build tool is being impelemented, look at SCons (Score:1)
Well then you're not looking hard enough. Try http://scons.sourceforge.net/ [sourceforge.net] for an implementation of winning build tool in alpha stage.
CONS (Score:2)
Re:CONS (Score:1)
big design up front (Score:3, Interesting)
Perhaps this from their web page: "The Advanced Computing Laboratory at Los Alamos National Laboratory is providing $860,000 of funding for Software Carpentry, which is being administered by Code Sourcery, LLC." And this: CodeSourcery also provides training and strategic consulting services for companies considering the adoption of free or open source software.
Why use the MIT License? Why develop in Python? Why require that the submissions to the design competition not contain any source code? They require a language but not any source? Am I being too cynical in seeing how, after all this contributed design, coding, testing, etc is done, at taxpayer expense, Code Sourcery is now in a tremendous position as the sole-source solution for support and training to the shops that choose to use these tools? And to notice that choosing the MIT license allows them to take and wrap up all the source code into their products and not give back anything? These are questions that either are in the FAQ [codesourcery.com] but not clearly answered, or not spoken about. Even the SC site itself has been retired and archived. [codesourcery.com]
Thanks, I'll stick with XUnit, Bugzilla, cvs (and subversion [tigris.org] when it's ready. For build config tools, well, if you do cross-platform C and C++, then autoconf or its successor, but that's just for one language and set of development requirements.
I'll be interested to see if anything widely used comes out of this exercise. So far, of the all the tools implementations promised for "Summer of 2001", we have QMTest 1.0. The rest? Late and unfinished.
Here's why (Score:3, Insightful)
The original Software Carpentry site had an excellent page explaining the reason for the whole project, but I can't find it. So I'll summarize and paraphrase from memory:
Because the original tools suck ass, that's why.
There was a great quote on the SC page, something to the effect that "when experienced *nix developers say that tools are easy to use, they really just mean that they've grown enough scar tissue that using those tools is no longer painful." I'm a long-time Old School *nix user, and I agree. Try teaching these "easy to use" tools to beginners and watch their faces contort.
Take make for example: we start with a syntax that seems custom-designed to fuck with the mind (so, rules have to be indented by one tab (why? don't ask why, they just have to be; probably because parsing was too slow back then without a leading marker character), so if you use eight spaces instead you'll get some useless error message, even though there's nothing visually apparently wrong.
Each command gets executed in a separate shell. That's always fun for beginners, and trips up experts too, until you build up enough scar tissue that ending all the commands with ";\" seems perfectly natural.
The POSIX specification for make requirements are unfortunately too weak to accomplish anything. An implementation of make must have some extensions in order to be useful. So we have a way to include other makefiles, but it's spelled differently for different versions. GNU make has some funky builtin pattern expanders, BSD make has some funky looping constructs -- and neither camp is willing to merge.
The SC project was going to replace all that crap with a tool of equal power that actually makes sense to a beginner, rather than looking like the dog's breakfast of features that make currently is.
(I, too, long for Subversions and the other Tigris projects to come to fruition.)
Re:big design up front (Score:1)
Here's why. [linuxjournal.com]
This is not the first! (Score:2, Informative)
Another developer has implemented SCCons [scons.org].
Both are still in development, but roundup is being used by several organisations already. We hope to have a new release out next week that will fix some problems with 0.3.0 and implement some nice functionality too.
Scons (the build tool) is available!!!! (Score:2)
The tool is called Scons [scons.org], and it is much nicer to use than make. Instead of using timestamps to determine when rebuilding is necessary (which is very error prone in networked environments like NFS), it uses MD5 checksums. I encourage everyone to take a look at it.
Scons itself is based upon Cons [attbi.com], a build tool based on Perl.