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

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']