Refactor test.util into mako.testing

Fixes: #349
Change-Id: I202c252a913fb72cc328a6e7f0f33174802487d3

1 files changed, 109 insertions, 0 deletions

diff --git a/mako/testing/fixtures.py b/mako/testing/fixtures.py
new file mode 100644
index 0000000..c9379c0
--- /dev/null
+++ b/mako/testing/fixtures.py
@@ -0,0 +1,109 @@
+import os
+
+from mako.cache import CacheImpl
+from mako.cache import register_plugin
+from mako.template import Template
+from .assertions import eq_
+from .config import config
+
+
+class TemplateTest:
+    def _file_template(self, filename, **kw):
+        filepath = self._file_path(filename)
+        return Template(
+            uri=filename,
+            filename=filepath,
+            module_directory=config.module_base,
+            **kw,
+        )
+
+    def _file_path(self, filename):
+        name, ext = os.path.splitext(filename)
+        py3k_path = os.path.join(config.template_base, name + "_py3k" + ext)
+        if os.path.exists(py3k_path):
+            return py3k_path
+
+        return os.path.join(config.template_base, filename)
+
+    def _do_file_test(
+        self,
+        filename,
+        expected,
+        filters=None,
+        unicode_=True,
+        template_args=None,
+        **kw,
+    ):
+        t1 = self._file_template(filename, **kw)
+        self._do_test(
+            t1,
+            expected,
+            filters=filters,
+            unicode_=unicode_,
+            template_args=template_args,
+        )
+
+    def _do_memory_test(
+        self,
+        source,
+        expected,
+        filters=None,
+        unicode_=True,
+        template_args=None,
+        **kw,
+    ):
+        t1 = Template(text=source, **kw)
+        self._do_test(
+            t1,
+            expected,
+            filters=filters,
+            unicode_=unicode_,
+            template_args=template_args,
+        )
+
+    def _do_test(
+        self,
+        template,
+        expected,
+        filters=None,
+        template_args=None,
+        unicode_=True,
+    ):
+        if template_args is None:
+            template_args = {}
+        if unicode_:
+            output = template.render_unicode(**template_args)
+        else:
+            output = template.render(**template_args)
+
+        if filters:
+            output = filters(output)
+        eq_(output, expected)
+
+
+class PlainCacheImpl(CacheImpl):
+    """Simple memory cache impl so that tests which
+    use caching can run without beaker."""
+
+    def __init__(self, cache):
+        self.cache = cache
+        self.data = {}
+
+    def get_or_create(self, key, creation_function, **kw):
+        if key in self.data:
+            return self.data[key]
+        else:
+            self.data[key] = data = creation_function(**kw)
+            return data
+
+    def put(self, key, value, **kw):
+        self.data[key] = value
+
+    def get(self, key, **kw):
+        return self.data[key]
+
+    def invalidate(self, key, **kw):
+        del self.data[key]
+
+
+register_plugin("plain", __name__, "PlainCacheImpl")