handle 'cpp' tag in end-to-end srctree tests

Cython/TestUtils.py

@@ -172,7 +172,9 @@ def unpack_source_tree(tree_file, dir=None):
     header = []
     cur_file = None
     f = open(tree_file)
+    try:
         lines = f.readlines()
+    finally:
         f.close()
     f = None
     for line in lines:
@@ -186,7 +188,7 @@ def unpack_source_tree(tree_file, dir=None):
             cur_file = open(path, 'w')
         elif cur_file is not None:
             cur_file.write(line)
-        else:
+        elif line.strip() and not line.lstrip().startswith('#'):
             header.append(line)
     if cur_file is not None:
         cur_file.close()

runtests.py

@@ -376,6 +376,7 @@ class TestBuilder(object):
                 mode = 'pyregr'
 
             if ext == '.srctree':
+                if 'cpp' not in tags['tag'] or 'cpp' in self.languages:
                     suite.addTest(EndToEndTest(filepath, workdir, self.cleanup_workdir))
                 continue
 

tests/build/cpp_cythonize.srctree

+# tag: cpp
+
 PYTHON setup.py build_ext --inplace
 PYTHON -c "import a; a.use_vector([1,2,3])"
 

tests/build/inline_distutils.srctree

+# tag: cpp
+
 PYTHON setup.py build_ext --inplace
 PYTHON -c "import a"
 

tests/build/module_api.srctree

+# tag: cpp
+
 PYTHON setup.py build_ext --inplace
 PYTHON test.py