feat: add basic support for "view" part of CRUD

still no SQLAlchemy yet, view must be explicit about data/model.  but
should support simple dict records, which will be needed in a few
places anyway

tests/grids/test_base.py

@@ -75,3 +75,76 @@ class TestGrid(TestCase):
         first = columns[0]
         self.assertEqual(first['field'], 'foo')
         self.assertEqual(first['label'], 'Foo')
+
+    def test_get_vue_data(self):
+
+        # null by default
+        grid = self.make_grid()
+        data = grid.get_vue_data()
+        self.assertIsNone(data)
+
+        # is usually a list
+        mydata = [
+            {'foo': 'bar'},
+        ]
+        grid = self.make_grid(data=mydata)
+        data = grid.get_vue_data()
+        self.assertIs(data, mydata)
+        self.assertEqual(data, [{'foo': 'bar'}])
+
+        # if grid has actions, that list may be supplemented
+        grid.actions.append(base.GridAction(self.request, 'view', url='/blarg'))
+        data = grid.get_vue_data()
+        self.assertIsNot(data, mydata)
+        self.assertEqual(data, [{'foo': 'bar', '_action_url_view': '/blarg'}])
+
+
+class TestGridAction(TestCase):
+
+    def setUp(self):
+        self.config = WuttaConfig()
+        self.request = testing.DummyRequest(wutta_config=self.config, use_oruga=False)
+
+    def make_action(self, key, **kwargs):
+        return base.GridAction(self.request, key, **kwargs)
+
+    def test_render_icon(self):
+
+        # icon is derived from key by default
+        action = self.make_action('blarg')
+        html = action.render_icon()
+        self.assertIn('<i class="fas fa-blarg">', html)
+
+        # oruga not yet supported
+        self.request.use_oruga = True
+        self.assertRaises(NotImplementedError, action.render_icon)
+
+    def test_render_label(self):
+
+        # label is derived from key by default
+        action = self.make_action('blarg')
+        label = action.render_label()
+        self.assertEqual(label, "Blarg")
+
+        # otherwise use what caller provides
+        action = self.make_action('foo', label="Bar")
+        label = action.render_label()
+        self.assertEqual(label, "Bar")
+
+    def test_get_url(self):
+        obj = {'foo': 'bar'}
+
+        # null by default
+        action = self.make_action('blarg')
+        url = action.get_url(obj)
+        self.assertIsNone(url)
+
+        # or can be "static"
+        action = self.make_action('blarg', url='/foo')
+        url = action.get_url(obj)
+        self.assertEqual(url, '/foo')
+
+        # or can be "dynamic"
+        action = self.make_action('blarg', url=lambda o, i: '/yeehaw')
+        url = action.get_url(obj)
+        self.assertEqual(url, '/yeehaw')