Pass context to test when using select (#1762)

CHANGES.rst

@@ -41,6 +41,8 @@ Unreleased
     contain the templates directory. :issue:`1705`
 -   Improve annotations for methods returning copies. :pr:`1880`
 -   ``urlize`` does not add ``mailto:`` to values like `@a@b`. :pr:`1870`
+-   Tests decorated with `@pass_context`` can be used with the ``|select``
+    filter. :issue:`1624`
 
 
 Version 3.1.4

src/jinja2/filters.py

@@ -1780,7 +1780,7 @@ def transfunc(x: V) -> V:
         args = args[1 + off :]
 
         def func(item: t.Any) -> t.Any:
-            return context.environment.call_test(name, item, args, kwargs)
+            return context.environment.call_test(name, item, args, kwargs, context)
 
     except LookupError:
         func = bool  # type: ignore

tests/test_regression.py

@@ -737,6 +737,18 @@ def test_nested_loop_scoping(self, env):
         )
         assert tmpl.render() == "hellohellohello"
 
+    def test_pass_context_with_select(self, env):
+        @pass_context
+        def is_foo(ctx, s):
+            assert ctx is not None
+            return s == "foo"
+
+        env.tests["foo"] = is_foo
+        tmpl = env.from_string(
+            "{% for x in ['one', 'foo'] | select('foo') %}{{ x }}{% endfor %}"
+        )
+        assert tmpl.render() == "foo"
+
 
 @pytest.mark.parametrize("unicode_char", ["\N{FORM FEED}", "\x85"])
 def test_unicode_whitespace(env, unicode_char):