path: root/tests/runner.py

'''
Simple test runner

See settings.py file for options&params. Edit as needed.
'''

from subprocess import Popen, PIPE, STDOUT
import os, unittest, tempfile, shutil, time, inspect, sys, math

# Params

abspath = os.path.abspath(os.path.dirname(__file__))
def path_from_root(pathelems):
    return os.path.join(os.path.sep, *(abspath.split(os.sep)[:-1] + pathelems))

EMSCRIPTEN = path_from_root(['emscripten.py'])

exec(open(os.path.join(os.path.abspath(os.path.dirname(__file__)), 'settings.py'), 'r').read())

def timeout_run(proc, timeout, note):
  start = time.time()
  if timeout is not None:
    while time.time() - start < timeout and proc.poll() is None:
      time.sleep(0.1)
    if proc.poll() is None:
      proc.kill() # XXX bug: killing emscripten.py does not kill it's child process!
      raise Exception("Timed out: " + note)
  return proc.communicate()[0]

class RunnerCore(unittest.TestCase):
  def get_dir(self):
    dirname = TEMP_DIR + '/tmp' # tempfile.mkdtemp(dir=TEMP_DIR)
    if not os.path.exists(dirname):
      os.makedirs(dirname)
    return dirname

  ## Build JavaScript code from source code
  def build(self, src, dirname, filename, output_processor=None, main_file=None):
    # Copy over necessary files for compiling the source
    if main_file is None:
      f = open(filename, 'w')
      f.write(src)
      f.close()
    else:
      # copy whole directory, and use a specific main .cpp file
      for f in os.listdir(src):
        shutil.copy(os.path.join(src, f), dirname)
      shutil.move(os.path.join(dirname, main_file), filename)

    # Copy Emscripten C++ API
    shutil.copy(path_from_root(['src', 'include', 'emscripten.h']), dirname)

    # C++ => LLVM binary
    try:
      # Make sure we notice if compilation steps failed
      os.remove(filename + '.o')
      os.remove(filename + '.o.ll')
    except:
      pass
    os.chdir(dirname)
    cwd = os.getcwd()
    output = Popen([COMPILER, '-DEMSCRIPTEN', '-emit-llvm'] + COMPILER_OPTS + ['-c', filename, '-o', filename + '.o'], stdout=PIPE, stderr=STDOUT).communicate()[0]
    os.chdir(cwd)
    if not os.path.exists(filename + '.o'):
      print "Failed to compile C/C++ source:\n\n", output
      raise Exception("Compilation error");

    # LLVM binary ==> LLVM assembly
    output = Popen([LLVM_DIS, filename + '.o'] + LLVM_DIS_OPTS + ['-o=' + filename + '.o.ll'], stdout=PIPE, stderr=STDOUT).communicate()[0]

    self.do_emscripten(filename, output_processor)

  def do_emscripten(self, filename, output_processor=None):
    # Run Emscripten
    exported_settings = {}
    for setting in ['QUANTUM_SIZE', 'RELOOP', 'OPTIMIZE', 'GUARD_MEMORY', 'USE_TYPED_ARRAYS']:
      exported_settings[setting] = eval(setting)
    out = open(filename + '.o.js', 'w') if not OUTPUT_TO_SCREEN else None
    timeout_run(Popen([EMSCRIPTEN, filename + '.o.ll', COMPILER_ENGINE[0], str(exported_settings).replace("'", '"')], stdout=out, stderr=STDOUT), TIMEOUT, 'Compiling')
    output = open(filename + '.o.js').read()
    if output_processor is not None:
        output_processor(output)
    if output is not None and 'Traceback'