Refactored the is_build_dir() helper to make it easier to customize.

hexagonit/recipe/cmmi/__init__.py

@@ -67,6 +67,11 @@ class Recipe(object):
             log.error('Error executing command: %s' % cmd)
             raise zc.buildout.UserError('System error')
 
+    def is_build_dir(self):
+        """Returns True if the current directory contains files that we
+        consider buildable, False otherwise."""
+        return os.path.isfile('configure') or os.path.isfile('Makefile.PL')
+
     def install(self):
         log = logging.getLogger(self.name)
         parts = []
@@ -110,15 +115,12 @@ class Recipe(object):
         os.mkdir(self.options['location'])
         os.chdir(compile_dir)
 
-        def is_build_dir():
-            return os.path.isfile('configure') or os.path.isfile('Makefile.PL')
-        
         try:
-            if not is_build_dir():
+            if not self.is_build_dir():
                 contents = os.listdir(compile_dir)
                 if len(contents) == 1:
                     os.chdir(contents[0])
-                    if not is_build_dir():
+                    if not self.is_build_dir():
                         log.error('Unable to find the configure script')
                         raise zc.buildout.UserError('Invalid package contents')
                 else:

hexagonit/recipe/cmmi/tests.py

+from zope.testing import doctest
+from zope.testing import renormalizing
+
+import os
+import re
+import shutil
+import tempfile
 import unittest
-import zc.buildout.tests
 import zc.buildout.testing
-import re
-
-from zope.testing import doctest, renormalizing
+import zc.buildout.tests
 
 optionflags =  (doctest.ELLIPSIS |
                 doctest.NORMALIZE_WHITESPACE |
@@ -14,6 +18,50 @@ def setUp(test):
     zc.buildout.testing.install('hexagonit.recipe.download', test)
     zc.buildout.testing.install_develop('hexagonit.recipe.cmmi', test)
 
+class NonInformativeTests(unittest.TestCase):
+
+    def setUp(self):
+        self.dir = tempfile.mkdtemp()
+
+    def tearDown(self):
+        shutil.rmtree(self.dir)
+
+    def write_file(self, filename, contents):
+        path = os.path.join(self.dir, filename)
+        fh = open(path, 'w')
+        fh.write(contents)
+        fh.close()
+        return path
+
+    def make_recipe(self, buildout, name, options):
+        from hexagonit.recipe.cmmi import Recipe
+        bo = {
+            'buildout' : {
+                'parts-directory' : '',
+            }
+        }
+        bo.update(buildout)
+        return Recipe(bo, name, options)
+
+    def test_is_build_dir__with_configure(self):
+        recipe = self.make_recipe({}, 'test', {'url' : 'http://no.where.com/'})
+        os.chdir(self.dir)
+        self.failIf(recipe.is_build_dir())
+        configure = self.write_file('configure', 'Dummy configure script')
+
+        self.failUnless(os.path.exists(configure))
+        self.failUnless(recipe.is_build_dir())
+
+    def test_is_build_dir__with_makefile_pl(self):
+        recipe = self.make_recipe({}, 'test', {'url' : 'http://no.where.com/'})
+        os.chdir(self.dir)
+        self.failIf(recipe.is_build_dir())
+        makefile = self.write_file('Makefile.PL', 'Dummy Makefile.PL script')
+
+        self.failUnless(os.path.exists(makefile))
+        self.failUnless(recipe.is_build_dir())
+
+
 def test_suite():
     suite = unittest.TestSuite((
             doctest.DocFileSuite(
@@ -29,6 +77,7 @@ def test_suite():
                         zc.buildout.testing.normalize_path,
                         ]),
                 ),
+            unittest.makeSuite(NonInformativeTests),
             ))
     return suite