coverage integration, default .coveragerc and .travis.yml ready for coveralls.io

gluon/widget.py

@@ -62,22 +62,34 @@ if not sys.version[:3] in ['2.4', '2.5', '2.6', '2.7']:
 logger = logging.getLogger("web2py")
 
 
-def run_system_tests():
+def run_system_tests(options):
+    """
+    Runs unittests for gluon.tests
+    """
+    import subprocess
     major_version = sys.version_info[0]
     minor_version = sys.version_info[1]
-    print "minor_version = %r" % minor_version
     if major_version == 2:
         if minor_version in (5, 6):
-            print "Python 2.5 or 2.6"
-            ret = os.system("PYTHONPATH=. unit2 -v gluon.tests")
+            sys.stderr.write("Python 2.5 or 2.6\n")
+            ret = subprocess.call(['unit2', '-v', 'gluon.tests'])
         elif minor_version in (7,):
-            print "Python 2.7"
-            ret = os.system("PYTHONPATH=. python -m unittest -v gluon.tests")
+            call_args = [sys.executable, '-m', 'unittest', '-v', 'gluon.tests']
+            if options.with_coverage:
+                try:
+                    import coverage
+                    coverage_config = os.path.join('gluon', 'tests', '.coveragerc')
+                    call_args = ['coverage', 'run', '--rcfile=%s' % coverage_config, 
+                                    '-m', 'unittest', '-v', 'gluon.tests']
+                except:
+                    sys.stderr.write('Coverage was not installed, skipping\n')
+            sys.stderr.write("Python 2.7\n")
+            ret = subprocess.call(call_args)
         else:
-            print "unknown python 2.x version"
+            sys.stderr.write("unknown python 2.x version\n")
             ret = 256
     else:
-        print "Only Python 2.x supported."
+        sys.stderr.write("Only Python 2.x supported.\n")
         ret = 256
     sys.exit(ret and 1)
 
@@ -902,7 +914,15 @@ def console():
                       dest='run_system_tests',
                       default=False,
                       help=msg)
-
+    
+    msg = ('adds coverage reporting (needs --run_system_tests), '
+           'python 2.7 and the coverage module installed')
+    parser.add_option('--with_coverage',
+                      action='store_true',
+                      dest='with_coverage',
+                      default=False,
+                      help=msg)
+                      
     if '-A' in sys.argv:
         k = sys.argv.index('-A')
     elif '--args' in sys.argv:
@@ -923,7 +943,7 @@ def console():
         options.ips = []
 
     if options.run_system_tests:
-        run_system_tests()
+        run_system_tests(options)
 
     if options.quiet:
         capture = cStringIO.StringIO()