Test built-in filters (#253)

Author: Laurent Franceschetti

test/simple/docs/index.md

@@ -4,4 +4,12 @@
 
 {{ macros_info() }}
 
+## Testing built-in filters
 
+The result is: {{ (-35.0/2) | abs }}
+
+{% set testing = 'hello world' %}
+
+Saying: {{ greeting | upper }}
+
+The length is: {{ greeting | length }}

test/simple/test_site.py

@@ -35,6 +35,14 @@ def test_pages():
     variables = project.config.extra
     assert VARIABLE_NAME in variables
     assert variables.greeting in page.markdown
+
+    # test built-in filters (#253)
+    header = 'built-in filters'
+    assert page.find_text("result", header)
+    assert page.find_text("result is: 17.5", header) # abs
+    assert page.find_text("saying: HELLO WORLD", header) # upper
+    assert page.find_text("length is: 12", header) # length
+    
 
 
     # ----------------