Rake: race condition between task prerequisites

tobie · April 22, 2008, 2:58pm

Hi,

I’m having a strange race condition between task prerequisites in the
following rakefile:

tobie/prototype/blob/master/Rakefile#L49


      
          Rake::PackageTask.new('prototype', PROTOTYPE_VERSION) do |package|
            package.need_tar_gz = true
            package.package_dir = PROTOTYPE_PKG_DIR
            package.package_files.include(
              '[A-Z]*',
              'dist/prototype.js',
              'lib/**',
              'src/**',
              'test/**'
            )
          end
          
          
task :clean_package_source do
            rm_rf File.join(PROTOTYPE_PKG_DIR, "prototype-#{PROTOTYPE_VERSION}")
          end
          
          
desc %[Builds the Prototype distribution, then builds and runs the Prototype test suite.
          The following options are available:
            
          - BROWSERS: Lets you choose which browsers to run the tests on.
            For example, to run the test suite on Internet Explorer and Chrome:

At line #49, the :test rake tasks has the following prerequisites:
:build_tests, :dist and :test_units.

:build_tests is correctly executed, as the files are generated, but
:test_units doesn’t wait for the files to be generated before running.

So the first time you run :test, no tests are called. (Subsequent calls
do work, though).

I’m really not sure what I should be looking at to solve this problem.

Any pointers are welcomed.

Thanks,

Tobie

tobie · April 22, 2008, 4:06pm

Tobie L. [email protected] (14:58) schrieb:

I’m having a strange race condition between task prerequisites in the
following rakefile:

http://github.com/tobie/prototype/tree/master/Rakefile#L49

At line #49, the :test rake tasks has the following prerequisites:
:build_tests, :dist and :test_units.

:build_tests is correctly executed, as the files are generated, but
:test_units doesn’t wait for the files to be generated before running.

If :test_units needs the result of :build_tests, the latter should be a
prerequisite of the first.

mfg, simon … l

tobie · April 22, 2008, 6:56pm

You mean as in: http://pastie.caboo.se/184892 ?

I had tried that earlier too (tried it again now to double-check),
problem persists.

tobie · April 22, 2008, 8:22pm

Hi again,

I ended up solving the issue. Turns out what I though was a block for
the task was actually the block defining the task.

Sorry for the hassle.

Best,

Tobie

tobie · April 23, 2008, 2:35am

Tobie L. [email protected] (20:22) schrieb:

You mean as in: Parked at Loopia ?

Yes, why put it there instead just posting it here?

I ended up solving the issue. Turns out what I though was a block for
the task was actually the block defining the task.

But the race condition is another thing, independent of the task doing
the wrong thing.

mfg, simon … l