--- a/piecrust/sources/base.py	Tue Aug 19 11:51:09 2014 -0700
+++ b/piecrust/sources/base.py	Tue Aug 19 12:46:55 2014 -0700
@@ -307,7 +307,7 @@
             for f in filter(self._filterPageFilename, filenames):
                 slug, ext = os.path.splitext(os.path.join(rel_dirpath, f))
                 slug = slug.replace('\\', '/')
-                if ext not in self.supported_extensions:
+                if ext.lstrip('.') not in self.supported_extensions:
                     slug += ext
                 if slug.startswith('./') or slug.startswith('.\\'):
                     slug = slug[2:]

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test_sources_base.py	Tue Aug 19 12:46:55 2014 -0700
@@ -0,0 +1,64 @@
+import os
+import pytest
+from piecrust.app import PieCrust
+from piecrust.sources.base import DefaultPageSource
+from .mockutil import mock_fs, mock_fs_scope
+
+
+@pytest.mark.parametrize('fs, expected_paths, expected_slugs', [
+        (mock_fs(), [], []),
+        (mock_fs().withPage('test/foo.html'),
+            ['foo.html'], ['foo']),
+        (mock_fs().withPage('test/foo.md'),
+            ['foo.md'], ['foo']),
+        (mock_fs().withPage('test/foo.ext'),
+            ['foo.ext'], ['foo.ext']),
+        (mock_fs().withPage('test/foo/bar.html'),
+            ['foo/bar.html'], ['foo/bar']),
+        (mock_fs().withPage('test/foo/bar.md'),
+            ['foo/bar.md'], ['foo/bar']),
+        (mock_fs().withPage('test/foo/bar.ext'),
+            ['foo/bar.ext'], ['foo/bar.ext']),
+        ])
+def test_default_source_factories(fs, expected_paths, expected_slugs):
+    fs.withConfig({
+        'site': {
+            'sources': {
+                'test': {}},
+            'routes': [
+                {'url': '/%path%', 'source': 'test'}]
+            }
+        })
+    fs.withDir('kitchen/_content/test')
+    with mock_fs_scope(fs):
+        app = PieCrust(fs.path('kitchen'), cache=False)
+        s = app.getSource('test')
+        facs = list(s.buildPageFactories())
+        paths = [f.rel_path for f in facs]
+        assert paths == expected_paths
+        slugs = [f.metadata['path'] for f in facs]
+        assert slugs == expected_slugs
+
+
+
+@pytest.mark.parametrize('ref_path, expected', [
+        ('foo.html', '/kitchen/_content/test/foo.html'),
+        ('foo/bar.html', '/kitchen/_content/test/foo/bar.html'),
+        ])
+def test_default_source_resolve_ref(ref_path, expected):
+    fs = mock_fs()
+    fs.withConfig({
+        'site': {
+            'sources': {
+                'test': {}},
+            'routes': [
+                {'url': '/%path%', 'source': 'test'}]
+            }
+        })
+    expected = fs.path(expected).replace('/', os.sep)
+    with mock_fs_scope(fs):
+        app = PieCrust(fs.path('kitchen'), cache=False)
+        s = app.getSource('test')
+        actual = s.resolveRef(ref_path)
+        assert actual == expected
+