ENH: Allow not printing coverage report

CHANGELOG

@@ -32,6 +32,8 @@
 
 1.3.3
 
+- Add option to suppress printing of coverage report
+  Patch by Eric Larson.
 - Fixed a minor issue with the reported version number.
 
 1.3.2
@@ -883,4 +885,3 @@
 - Increased compatibility with python 2.3 (and maybe earlier)
 - Increased compatibility with tests written for py.test: now calls
   module.setup_module(module) if module.setup_module() fails
-

README.txt

@@ -393,6 +393,10 @@ Options
 
    Location of coverage config file [NOSE_COVER_CONFIG_FILE]
 
+--cover-no-print
+
+   Suppress printing of coverage information
+
 --pdb
 
    Drop into debugger on failures or errors

nose/plugins/cover.py

@@ -29,6 +29,7 @@ class Coverage(Plugin):
     coverInstance = None
     coverErase = False
     coverMinPercentage = None
+    coverNoPrint = False
     score = 200
     status = {}
 
@@ -85,7 +86,8 @@ def options(self, parser, env):
                           dest="cover_xml",
                           help="Produce XML coverage information")
         parser.add_option("--cover-xml-file", action="store",
-                          default=env.get('NOSE_COVER_XML_FILE', 'coverage.xml'),
+                          default=env.get('NOSE_COVER_XML_FILE',
+                                          'coverage.xml'),
                           dest="cover_xml_file",
                           metavar="FILE",
                           help="Produce XML coverage information in file")
@@ -94,6 +96,10 @@ def options(self, parser, env):
                           dest="cover_config_file",
                           help="Location of coverage config file "
                           "[NOSE_COVER_CONFIG_FILE]")
+        parser.add_option("--cover-no-print", action="store_true",
+                          default=env.get('NOSE_COVER_NO_PRINT'),
+                          dest="cover_no_print",
+                          help="Suppress printing of coverage information")
 
     def configure(self, options, conf):
         """
@@ -140,10 +146,7 @@ def configure(self, options, conf):
         if options.cover_xml:
             self.coverXmlFile = options.cover_xml_file
             log.debug('Will put XML coverage report in %s', self.coverXmlFile)
-        # Coverage uses True to mean default
-        self.coverConfigFile = True
-        if options.cover_config_file:
-            self.coverConfigFile = options.cover_config_file
+        self.coverNoPrint = options.cover_no_print
         if self.enabled:
             self.status['active'] = True
             self.coverInstance = coverage.coverage(auto_data=False,
@@ -153,19 +156,7 @@ def configure(self, options, conf):
             self.coverInstance.is_worker = conf.worker
             self.coverInstance.exclude('#pragma[: ]+[nN][oO] [cC][oO][vV][eE][rR]')
 
-            log.debug("Coverage begin")
-            self.skipModules = sys.modules.keys()[:]
-            if self.coverErase:
-                log.debug("Clearing previously collected coverage statistics")
-                self.coverInstance.combine()
-                self.coverInstance.erase()
-
-            if not self.coverInstance.is_worker:
-                self.coverInstance.load()
-                self.coverInstance.start()
-
-
-    def beforeTest(self, *args, **kwargs):
+    def begin(self):
         """
         Begin recording coverage information.
         """
@@ -193,10 +184,11 @@ def report(self, stream):
         self.coverInstance.combine()
         self.coverInstance.save()
         modules = [module
-                    for name, module in sys.modules.items()
-                    if self.wantModuleCoverage(name, module)]
+                   for name, module in sys.modules.items()
+                   if self.wantModuleCoverage(name, module)]
         log.debug("Coverage report will cover modules: %s", modules)
-        self.coverInstance.report(modules, file=stream)
+        if not self.coverNoPrint:
+            self.coverInstance.report(modules, file=stream)
 
         import coverage
         if self.coverHtmlDir:
@@ -237,7 +229,6 @@ def report(self, stream):
                 log.error("No total percentage was found in coverage output, "
                           "something went wrong.")
 
-
     def wantModuleCoverage(self, name, module):
         if not hasattr(module, '__file__'):
             log.debug("no coverage of %s: no __file__", name)