SassMiddleware creates source map files as well

Author: dahlia

docs/changes.rst

@@ -8,6 +8,8 @@ To be released.
 
 - Expose source maps support:
 
+  - :class:`~sassutils.wsgi.SassMiddleware` now also creates source map files
+    with filenames followed by :file:`.map` suffix.
   - :meth:`Manifest.build_one() <sassutils.builder.Manifest.build_one>` method
     has a new ``source_map`` option.  This option builds also a source map
     file with the filename followed by :file:`.map` suffix.

sasstests.py

@@ -26,6 +26,14 @@
     color: blue; }
 '''
 
+A_EXPECTED_CSS_WITH_MAP = '''\
+body {
+  background-color: green; }
+  body a {
+    color: blue; }
+
+/*# sourceMappingURL=a.sass.css.map */'''
+
 B_EXPECTED_CSS = '''\
 b i {
   font-size: 20px; }
@@ -151,12 +159,9 @@ def test_compile_source_map(self):
         actual, source_map = sass.compile(
             filename='test/a.sass',
             source_comments='map',
-            source_map_filename='source_map_filename'
-        )
-        self.assertEqual(
-            A_EXPECTED_CSS + '\n/*# sourceMappingURL=source_map_filename */',
-            actual
+            source_map_filename='a.sass.css.map'
         )
+        self.assertEqual(A_EXPECTED_CSS_WITH_MAP, actual)
         self.assertEqual(
             {
                 'version': 3,
@@ -272,23 +277,25 @@ def sample_wsgi_app(environ, start_response):
 
     def test_wsgi_sass_middleware(self):
         css_dir = tempfile.mkdtemp()
-        app = SassMiddleware(self.sample_wsgi_app, {
-            __name__: ('test', css_dir, '/static')
-        })
-        client = Client(app, Response)
-        r = client.get('/asdf')
-        self.assertEquals(200, r.status_code)
-        self.assertEquals(b'/asdf', r.data)
-        self.assertEquals('text/plain', r.mimetype)
-        r = client.get('/static/a.sass.css')
-        self.assertEquals(200, r.status_code)
-        self.assertEquals(b(A_EXPECTED_CSS), r.data)
-        self.assertEquals('text/css', r.mimetype)
-        r = client.get('/static/not-exists.sass.css')
-        self.assertEquals(200, r.status_code)
-        self.assertEquals(b'/static/not-exists.sass.css', r.data)
-        self.assertEquals('text/plain', r.mimetype)
-        shutil.rmtree(css_dir)
+        try:
+            app = SassMiddleware(self.sample_wsgi_app, {
+                __name__: ('test', css_dir, '/static')
+            })
+            client = Client(app, Response)
+            r = client.get('/asdf')
+            self.assertEquals(200, r.status_code)
+            self.assertEquals(b'/asdf', r.data)
+            self.assertEquals('text/plain', r.mimetype)
+            r = client.get('/static/a.sass.css')
+            self.assertEquals(200, r.status_code)
+            self.assertEquals(b(A_EXPECTED_CSS_WITH_MAP), r.data)
+            self.assertEquals('text/css', r.mimetype)
+            r = client.get('/static/not-exists.sass.css')
+            self.assertEquals(200, r.status_code)
+            self.assertEquals(b'/static/not-exists.sass.css', r.data)
+            self.assertEquals('text/plain', r.mimetype)
+        finally:
+            shutil.rmtree(css_dir)
 
 
 class SasscTestCase(unittest.TestCase):

sassutils/wsgi.py

@@ -32,6 +32,10 @@ class SassMiddleware(object):
                         ``package_dir`` option
     :type package_dir: :class:`collections.Mapping`
 
+    .. versionchanged:: 0.4.0
+       It creates also source map files with filenames followed by
+       :file:`.map` suffix.
+
     """
 
     def __init__(self, app, manifests, package_dir={},
@@ -70,7 +74,9 @@ def __call__(self, environ, start_response):
                 css_filename = path[len(prefix):]
                 sass_filename = css_filename[:-4]
                 try:
-                    result = manifest.build_one(package_dir, sass_filename)
+                    result = manifest.build_one(package_dir,
+                                                sass_filename,
+                                                source_map=True)
                 except (IOError, OSError):
                     break
                 except CompileError as e: