diff options
Diffstat (limited to 'pystache/tests')
| -rw-r--r-- | pystache/tests/test_renderengine.py | 45 | ||||
| -rw-r--r-- | pystache/tests/test_renderer.py | 33 |
2 files changed, 77 insertions, 1 deletions
diff --git a/pystache/tests/test_renderengine.py b/pystache/tests/test_renderengine.py index 4c40c47..db916f7 100644 --- a/pystache/tests/test_renderengine.py +++ b/pystache/tests/test_renderengine.py @@ -55,11 +55,13 @@ class RenderEngineTestCase(unittest.TestCase): """ # In real-life, these arguments would be functions - engine = RenderEngine(resolve_partial="foo", literal="literal", escape="escape") + engine = RenderEngine(resolve_partial="foo", literal="literal", + escape="escape", to_str="str") self.assertEqual(engine.escape, "escape") self.assertEqual(engine.literal, "literal") self.assertEqual(engine.resolve_partial, "foo") + self.assertEqual(engine.to_str, "str") class RenderTests(unittest.TestCase, AssertStringMixin, AssertExceptionMixin): @@ -182,6 +184,47 @@ class RenderTests(unittest.TestCase, AssertStringMixin, AssertExceptionMixin): self._assert_render(u'**bar bar**', template, context, engine=engine) + # Custom to_str for testing purposes. + def _to_str(self, val): + if not val: + return '' + else: + return str(val) + + def test_to_str(self): + """Test the to_str attribute.""" + engine = self._engine() + template = '{{value}}' + context = {'value': None} + + self._assert_render(u'None', template, context, engine=engine) + engine.to_str = self._to_str + self._assert_render(u'', template, context, engine=engine) + + def test_to_str__lambda(self): + """Test the to_str attribute for a lambda.""" + engine = self._engine() + template = '{{value}}' + context = {'value': lambda: None} + + self._assert_render(u'None', template, context, engine=engine) + engine.to_str = self._to_str + self._assert_render(u'', template, context, engine=engine) + + def test_to_str__section_list(self): + """Test the to_str attribute for a section list.""" + engine = self._engine() + template = '{{#list}}{{.}}{{/list}}' + context = {'list': [None, None]} + + self._assert_render(u'NoneNone', template, context, engine=engine) + engine.to_str = self._to_str + self._assert_render(u'', template, context, engine=engine) + + def test_to_str__section_lambda(self): + # TODO: add a test for a "method with an arity of 1". + pass + def test__non_basestring__literal_and_escaped(self): """ Test a context value that is not a basestring instance. diff --git a/pystache/tests/test_renderer.py b/pystache/tests/test_renderer.py index df518f9..0dbe0d9 100644 --- a/pystache/tests/test_renderer.py +++ b/pystache/tests/test_renderer.py @@ -425,6 +425,39 @@ class RendererTests(unittest.TestCase, AssertStringMixin): actual = renderer.render(view) self.assertEqual('Hi pizza!', actual) + def test_custom_string_coercion_via_assignment(self): + """ + Test that string coercion can be customized via attribute assignment. + + """ + renderer = self._renderer() + def to_str(val): + if not val: + return '' + else: + return str(val) + + self.assertEqual(renderer.render('{{value}}', value=None), 'None') + renderer.str_coerce = to_str + self.assertEqual(renderer.render('{{value}}', value=None), '') + + def test_custom_string_coercion_via_subclassing(self): + """ + Test that string coercion can be customized via subclassing. + + """ + class MyRenderer(Renderer): + def str_coerce(self, val): + if not val: + return '' + else: + return str(val) + renderer1 = Renderer() + renderer2 = MyRenderer() + + self.assertEqual(renderer1.render('{{value}}', value=None), 'None') + self.assertEqual(renderer2.render('{{value}}', value=None), '') + # By testing that Renderer.render() constructs the right RenderEngine, # we no longer need to exercise all rendering code paths through |