add more tests

test/corpus/verbatim.txt

@@ -0,0 +1,83 @@
+==================
+Verbatim Basic
+==================
+
+{% verbatim %}{{ hello }}{% endverbatim %}
+
+---
+
+(template
+  (content)
+  (verbatim_group
+    name: (push_verbatim)
+    (verbatim_content)
+    (pop_verbatim))
+  (content))
+
+==================
+Verbatim Empty
+==================
+
+{% verbatim %}{% endverbatim %}
+
+---
+
+(template
+  (content)
+  (verbatim_group
+    name: (push_verbatim)
+    (pop_verbatim))
+  (content))
+
+==================
+Verbatim Ignores Tags
+==================
+
+{% verbatim %}
+{{ hello }}
+{% for x in y %}
+{% endverbatim %}
+
+---
+
+(template
+  (content)
+  (verbatim_group
+    name: (push_verbatim)
+    (verbatim_content)
+    (pop_verbatim))
+  (content))
+
+==================
+Verbatim With Name
+==================
+
+{% verbatim myblock %}{{ hello }}{% endverbatim myblock %}
+
+---
+
+(template
+  (content)
+  (verbatim_group
+    name: (push_verbatim)
+    (verbatim_content)
+    (pop_verbatim))
+  (content))
+
+==================
+Verbatim With Name Allows Nested Unnamed Verbatim
+==================
+
+{% verbatim myblock %}
+Avoid template rendering via the {% verbatim %}{% endverbatim %} block.
+{% endverbatim myblock %}
+
+---
+
+(template
+  (content)
+  (verbatim_group
+    name: (push_verbatim)
+    (verbatim_content)
+    (pop_verbatim))
+  (content))