From 719537aeec37368e0d7fbea42a5d090bb5a1b7c9 Mon Sep 17 00:00:00 2001
From: David Lord <davidism@gmail.com>
Date: Sat, 12 Oct 2019 21:04:31 -0700
Subject: don't finalize TemplateData nodes

Finalize only applies to the output of expressions (constant or not).
Add tests for context, eval, and env finalize functions.
---
 tests/test_api.py | 57 +++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 47 insertions(+), 10 deletions(-)

(limited to 'tests/test_api.py')

diff --git a/tests/test_api.py b/tests/test_api.py
index 1829b1d..a457602 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -19,6 +19,9 @@ from jinja2 import Environment, Undefined, ChainableUndefined, \
 from jinja2.compiler import CodeGenerator
 from jinja2.runtime import Context
 from jinja2.utils import Cycler
+from jinja2.utils import contextfunction
+from jinja2.utils import evalcontextfunction
+from jinja2.utils import environmentfunction
 
 
 @pytest.mark.api
@@ -37,16 +40,50 @@ class TestExtendedAPI(object):
             tmpl = env.from_string('{{ foo["items"] }}')
             assert tmpl.render(foo={'items': 42}) == '42'
 
-    def test_finalizer(self, env):
-        def finalize_none_empty(value):
-            if value is None:
-                value = u''
-            return value
-        env = Environment(finalize=finalize_none_empty)
-        tmpl = env.from_string('{% for item in seq %}|{{ item }}{% endfor %}')
-        assert tmpl.render(seq=(None, 1, "foo")) == '||1|foo'
-        tmpl = env.from_string('<{{ none }}>')
-        assert tmpl.render() == '<>'
+    def test_finalize(self):
+        e = Environment(finalize=lambda v: "" if v is None else v)
+        t = e.from_string("{% for item in seq %}|{{ item }}{% endfor %}")
+        assert t.render(seq=(None, 1, "foo")) == "||1|foo"
+
+    def test_finalize_constant_expression(self):
+        e = Environment(finalize=lambda v: "" if v is None else v)
+        t = e.from_string("<{{ none }}>")
+        assert t.render() == "<>"
+
+    def test_no_finalize_template_data(self):
+        e = Environment(finalize=lambda v: type(v).__name__)
+        t = e.from_string("<{{ value }}>")
+        # If template data was finalized, it would print "strintstr".
+        assert t.render(value=123) == "<int>"
+
+    def test_context_finalize(self):
+        @contextfunction
+        def finalize(context, value):
+            return value * context["scale"]
+
+        e = Environment(finalize=finalize)
+        t = e.from_string("{{ value }}")
+        assert t.render(value=5, scale=3) == "15"
+
+    def test_eval_finalize(self):
+        @evalcontextfunction
+        def finalize(eval_ctx, value):
+            return str(eval_ctx.autoescape) + value
+
+        e = Environment(finalize=finalize, autoescape=True)
+        t = e.from_string("{{ value }}")
+        assert t.render(value="<script>") == "True&lt;script&gt;"
+
+    def test_env_autoescape(self):
+        @environmentfunction
+        def finalize(env, value):
+            return " ".join(
+                (env.variable_start_string, repr(value), env.variable_end_string)
+            )
+
+        e = Environment(finalize=finalize)
+        t = e.from_string("{{ value }}")
+        assert t.render(value="hello") == "{{ 'hello' }}"
 
     def test_cycler(self, env):
         items = 1, 2, 3
-- 
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