Add test for coverage builder and fix an AttributeError in it.

sphinx/ext/coverage.py

@@ -73,10 +73,9 @@ class CoverageBuilder(Builder):
         self.build_py_coverage()
         self.write_py_coverage()
 
-        if self.c_sourcefiles:
-            self.c_undoc = {}
-            self.build_c_coverage()
-            self.write_c_coverage()
+        self.c_undoc = {}
+        self.build_c_coverage()
+        self.write_c_coverage()
 
     def build_c_coverage(self):
         # Fetch all the info from the header files
@@ -216,8 +215,9 @@ class CoverageBuilder(Builder):
                                 op.writelines('   - %s\n' % x for x in methods)
                         op.write('\n')
 
-            write_header(op, 'Modules that failed to import')
-            op.writelines(' * %s -- %s\n' % x for x in failed)
+            if failed:
+                write_header(op, 'Modules that failed to import')
+                op.writelines(' * %s -- %s\n' % x for x in failed)
         finally:
             op.close()
 

tests/root/conf.py

@@ -23,7 +23,7 @@ sys.path.append(os.path.abspath('.'))
 
 # Add any Sphinx extension module names here, as strings. They can be extensions
 # coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
-extensions = ['ext', 'sphinx.ext.autodoc', 'sphinx.ext.jsmath']
+extensions = ['ext', 'sphinx.ext.autodoc', 'sphinx.ext.jsmath', 'sphinx.ext.coverage']
 jsmath_path = 'dummy.js'
 
 # Add any paths that contain templates here, relative to this directory.
@@ -172,6 +172,9 @@ latex_documents = [
 
 value_from_conf_py = 84
 
+coverage_c_path = ['special/*.h']
+coverage_c_regexes = {'cfunction': r'^PyAPI_FUNC\(.*\)\s+([^_][\w_]+)'}
+
 
 def setup(app):
     app.add_config_value('value_from_conf_py', 42, False)

tests/root/special/api.h

@@ -0,0 +1 @@
+PyAPI_FUNC(PyObject *) Py_SphinxTest();

tests/test_coverage.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+"""
+    test_coverage
+    ~~~~~~~~~~~~~
+
+    Test the coverage builder.
+
+    :copyright: 2008 by Georg Brandl.
+    :license: BSD.
+"""
+
+import pickle
+
+from util import *
+
+
+@with_app(buildername='coverage')
+def test_build(app):
+    app.builder.build_all()
+
+    py_undoc = (app.outdir / 'python.txt').text()
+    assert py_undoc.startswith('Undocumented Python objects\n'
+                               '===========================\n')
+    assert 'test_autodoc\n------------\n' in py_undoc
+    assert ' * Class -- missing methods:\n' in py_undoc
+    assert ' * process_docstring\n' in py_undoc
+    assert ' * function\n' not in py_undoc  # these two are documented
+    assert ' * Class\n' not in py_undoc     # in autodoc.txt
+
+    c_undoc = (app.outdir / 'c.txt').text()
+    assert c_undoc.startswith('Undocumented C API elements\n'
+                              '===========================\n')
+    assert 'api.h' in c_undoc
+    assert ' * Py_SphinxTest' in c_undoc
+
+    undoc_py, undoc_c = pickle.loads((app.outdir / 'undoc.pickle').text())
+    assert len(undoc_c) == 1
+    # the key is the full path to the header file, which isn't testable
+    assert undoc_c.values()[0] == [('cfunction', 'Py_SphinxTest')]
+
+    assert 'test_autodoc' in undoc_py
+    assert 'funcs' in undoc_py['test_autodoc']
+    assert 'process_docstring' in undoc_py['test_autodoc']['funcs']
+    assert 'classes' in undoc_py['test_autodoc']
+    assert 'Class' in undoc_py['test_autodoc']['classes']
+    assert 'undocmeth' in undoc_py['test_autodoc']['classes']['Class']