[ANN] rcov 0.5.0: code coverage + callsite info, RubyGems, Rant

ruby-talk
1

fr Mauricio:
# Source code, additional information, screenshots... available at
# http://eigenclass.org/hiki.rb?rcov
# Release information:
# http://eigenclass.org/hiki.rb?rcov+0.5.0

rcov is really very useful.
Thank you for sharing rcov.

# Sample cross-referenced report generated by rcov:
# http://eigenclass.org/static/rcov-sample-report-crossref/

uber cool.
i think the only thing lacking is a web-based editor that hooks to rcov. Wherein you can click on any source, edit it, rerun rcov analysis again, all just using a browser..

# This release is the first to include RubyGems packages: both
# a binary one for
# Win32 and a platform-independent one for all those with a
# compiler, (or a lot
# of patience, if willing to run rcov in pure-Ruby mode), so
# gem install rcov
# should work.

tested and runs great in windows and linux.
but i would still love to see a pure ruby rcov (even if it may be slow).

kind regards -botp

2

I think a way to open up the file in an external editor would be better. This could be done to work with TextMate easily using its [URL scheme][1]. I'm not sure about other editors. Maybe an --editor-links option, which accepts one of: TextMate, ….

[1]: http://macromates.com/textmate/manual/using_textmate_from_terminal.html#url_scheme_html

-- Daniel

···

On May 30, 2006, at 1:40 PM, Peña, Botp wrote:

On May 30, 2006, at 11:56 AM, Mauricio Fernandez wrote:
Sample cross-referenced report generated by rcov:
    http://eigenclass.org/static/rcov-sample-report-crossref/

uber cool.
i think the only thing lacking is a web-based editor that hooks to rcov. Wherein you can click on any source, edit it, rerun rcov analysis again, all just using a browser..

3

> Sample cross-referenced report generated by rcov:
> http://eigenclass.org/static/rcov-sample-report-crossref/

uber cool.
i think the only thing lacking is a web-based editor that hooks to rcov.
Wherein you can click on any source, edit it, rerun rcov analysis again, all
just using a browser..

Attractive at first sight, but on second thought I don't think anybody would
enjoy editing with a browser (unless running an embedded vim or browsing with
emacs) :slight_smile: I'll think about integration with the user's editor of choice.

> This release is the first to include RubyGems packages: both a binary one
> for Win32 and a platform-independent one for all those with a compiler,
> (or a lot of patience, if willing to run rcov in pure-Ruby mode), so
> gem install rcov
> should work.

tested and runs great in windows and linux.
but i would still love to see a pure ruby rcov (even if it may be slow).

Actually, rcov *will* run in pure-Ruby mode if it cannot load rcovrt.
If you install it from the tarball with
  ruby setup.rb --without-ext
or using RubyGems and the compilation fails, it'll fall back to pure-Ruby and
give you a warning:

batsman@tux-chan:~/src/rcov/examples$ rcov --version
bash: rcov: command not found
batsman@tux-chan:~/src/rcov/examples$ make=bogus-command-foo gem install rcov
Attempting local installation of 'rcov'
Local gem file not found: rcov*.gem
Attempting remote installation of 'rcov'
Select which gem to install for your platform (i686-linux)
1. rcov 0.5.0.1 (ruby)
2. rcov 0.5.0.1 (mswin32)
3. Cancel installation

1

Building native extensions. This could take a while...
/home/batsman/usr/lib/ruby/1.8/fileutils.rb:243: command not found: bogus-command-foo
/home/batsman/usr/lib/ruby/1.8/fileutils.rb:243: command not found: bogus-command-foo install
ruby extconf.rb install rcov
creating Makefile

bogus-command-foo

bogus-command-foo install
Successfully installed rcov-0.5.0.1
Installing RDoc documentation for rcov-0.5.0.1...
batsman@tux-chan:~/src/rcov/examples$ rcov --version
rcov 0.5.0 2006-05-30
batsman@tux-chan:~/src/rcov/examples$ rcov --text-coverage --no-html --no-color a.rb

Since the rcovrt extension couldn't be loaded, rcov will run in pure-Ruby
mode, which is about two orders of magnitude slower.

If you're on win32, you can find a pre-built extension (usable with recent
One Click Installer and mswin32 builds) at http://eigenclass.org/hiki.rb?rcov .

blergh
yep
Done: 56

···

On Tue, May 30, 2006 at 08:40:33PM +0900, Peña, Botp wrote:

a.rb

   srand(0)
   c = 0
   d = 1
   10.times do |i|
     if rand % (i + 10)
       c += i
       d += 1
     end
   end
   puts "blergh"
   if c > 4*d
     # stuff
     puts "yep"
## else
## puts "nope"
## # more stuff
## end

   puts "Done: #{c+d}"

--
Mauricio Fernandez - http://eigenclass.org - singular Ruby

4

Seconded! I love it. Thank you bery much. My candidate for the "I want a Pony awards is" Some king of mashup between rcov, rake and ZenTest. I'd like something so that running tests became something akin to making a build in a static language, rcov would tell autotest what tests it needed to re-run based on the profiling information and whine heavily when you have code that's called isn't under test.

/me hopes the lazyweb will provide! (and wishes he had proper time himself)

Chris

···

On 30 May 2006, at 13:40, Peña, Botp wrote:

fr Mauricio:
# Source code, additional information, screenshots... available at
# http://eigenclass.org/hiki.rb?rcov
# Release information:
# http://eigenclass.org/hiki.rb?rcov+0.5.0

rcov is really very useful.
Thank you for sharing rcov.

5

Maybe this is what you mean (I don't know ZenTest), but how hot would it be if someone made an eclipse plugin that did it as a continual background task (like, did it per file every time you saved) and popped up little "Attention" icons next to files and underlined the parts of code that weren't getting hit by unit testing. *drools*

But in the mean time rcov is frickin hot!
-Mat

···

On May 31, 2006, at 6:16 PM, Chris McGrath wrote:

On 30 May 2006, at 13:40, Peña, Botp wrote:

fr Mauricio:
# Source code, additional information, screenshots... available at
# http://eigenclass.org/hiki.rb?rcov
# Release information:
# http://eigenclass.org/hiki.rb?rcov+0.5.0

rcov is really very useful.
Thank you for sharing rcov.

Seconded! I love it. Thank you bery much. My candidate for the "I want a Pony awards is" Some king of mashup between rcov, rake and ZenTest. I'd like something so that running tests became something akin to making a build in a static language, rcov would tell autotest what tests it needed to re-run based on the profiling information and whine heavily when you have code that's called isn't under test.

/me hopes the lazyweb will provide! (and wishes he had proper time himself)

6

I don't know about eclipse, but I implemented this yesterday:

$ rake rcov RCOVOPTS="--save"
[...]

/me edits lib/rcov.rb

... some time later:

$ rake rcov RCOVOPTS="--text-coverage-diff --no-color"
(in /home/batsman/src/rcov/head)
rm -r coverage
/home/batsman/usr/bin/ruby -Ilib:ext/rcovrt "bin/rcov" --text-coverage-diff --no-color -o "coverage" "test/test_CodeCoverageAnalyzer.rb" "test/test_FileStatistics.rb" "test/test_CallSiteAnalyzer.rb"
Loaded suite bin/rcov
Started
.......................................
Finished in 1.163085 seconds.

39 tests, 415 assertions, 0 failures, 0 errors

···

On Thu, Jun 01, 2006 at 08:10:47AM +0900, Mat Schaffer wrote:

>Seconded! I love it. Thank you bery much. My candidate for the "I
>want a Pony awards is" Some king of mashup between rcov, rake and
>ZenTest. I'd like something so that running tests became something
>akin to making a build in a static language, rcov would tell
>autotest what tests it needed to re-run based on the profiling
>information and whine heavily when you have code that's called
>isn't under test.
>
>/me hopes the lazyweb will provide! (and wishes he had proper time
>himself)

Maybe this is what you mean (I don't know ZenTest), but how hot would
it be if someone made an eclipse plugin that did it as a continual
background task (like, did it per file every time you saved) and
popped up little "Attention" icons next to files and underlined the
parts of code that weren't getting hit by unit testing. *drools*

================================================================================
!!!!! Uncovered code introduced in lib/rcov.rb

### lib/rcov.rb:207
   
     def precompute_coverage(comments_run_by_default = true)
       changed = false
       lastidx = lines.size - 1
       if (!is_code?(lastidx) || /^__END__$/ =~ @lines[-1]) && !@coverage[lastidx]
!! # mark the last block of comments
!! @coverage[lastidx] ||= :inferred
!! (lastidx-1).downto(0) do |i|
!! break if is_code?(i)
!! @coverage[i] ||= :inferred
!! end
!! end
       (0...lines.size).each do |i|
         next if @coverage[i]
         line = @lines[i]

It's in my repository, and it will be in rcov 0.6.0.

--
Mauricio Fernandez - http://eigenclass.org - singular Ruby

7

Bravo! What's your encore gonna be?
I'm no expert in eclipse plugins. And actually the editor is a little hard to plug from what I understand. But if there's a way to get those !! lines in a lightweight machine readable format, it shouldn't be _too_ hard to implement the functionality I was talking about.
-Mat

···

On Jun 1, 2006, at 4:56 AM, Mauricio Fernandez wrote:

I don't know about eclipse, but I implemented this yesterday:

$ rake rcov RCOVOPTS="--save"
[...]

/me edits lib/rcov.rb

... some time later:

$ rake rcov RCOVOPTS="--text-coverage-diff --no-color"
(in /home/batsman/src/rcov/head)
rm -r coverage
/home/batsman/usr/bin/ruby -Ilib:ext/rcovrt "bin/rcov" --text-coverage-diff --no-color -o "coverage" "test/test_CodeCoverageAnalyzer.rb" "test/test_FileStatistics.rb" "test/test_CallSiteAnalyzer.rb"
Loaded suite bin/rcov
Started
.......................................
Finished in 1.163085 seconds.

39 tests, 415 assertions, 0 failures, 0 errors

================================================================================
!!!!! Uncovered code introduced in lib/rcov.rb

### lib/rcov.rb:207

     def precompute_coverage(comments_run_by_default = true)
       changed = false
       lastidx = lines.size - 1
       if (!is_code?(lastidx) || /^__END__$/ =~ @lines[-1]) && !@coverage[lastidx]
!! # mark the last block of comments
!! @coverage[lastidx] ||= :inferred
!! (lastidx-1).downto(0) do |i|
!! break if is_code?(i)
!! @coverage[i] ||= :inferred
!! end
!! end
       (0...lines.size).each do |i|
         next if @coverage[i]
         line = @lines[i]

It's in my repository, and it will be in rcov 0.6.0.

8

==========
!!!!! Uncovered code introduced in lib/rcov.rb

### lib/rcov.rb:207

[...]

It's in my repository, and it will be in rcov 0.6.0.

Bravo! What's your encore gonna be?

*chuckle* You just gave me one idea. I've got a piece of paper on my desk
where I've written about a dozen things I want to implement (I've crossed out
4 so far); I add a couple every once in a while. I'm keeping them more or less
secret for the time being, but I'll send a snapshot (tarball and/or RubyGems
packages) of rcov's HEAD branch with the new stuff to whoever reports a new
bug in rcov :slight_smile:

(Reports for bugs I've already fixed in HEAD will be requited with a somewhat
less fresh snapshot :wink:

I'm no expert in eclipse plugins. And actually the editor is a
little hard to plug from what I understand. But if there's a way to
get those !! lines in a lightweight machine readable format, it
shouldn't be _too_ hard to implement the functionality I was talking
about.

I wrote --text-coverage-diff with that in mind (although not exactly the way
you described it). Actually, I was planning some vim integration using
errorformat...

···

On Thu, Jun 01, 2006 at 10:25:11PM +0900, Mat Schaffer wrote:

--
Mauricio Fernandez - http://eigenclass.org - singular Ruby