Index: tools/gn/function_template_unittest.cc |
diff --git a/tools/gn/function_template_unittest.cc b/tools/gn/function_template_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..cd98423a48c5b4151b59cf2378555e5fcadc58ce |
--- /dev/null |
+++ b/tools/gn/function_template_unittest.cc |
@@ -0,0 +1,29 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "testing/gtest/include/gtest/gtest.h" |
+#include "tools/gn/test_with_scope.h" |
+ |
+// Checks that variables used inside template definitions aren't reported |
+// unused if they were declared above the template. |
+TEST(FunctionTemplate, MarkUsed) { |
+ TestWithScope setup; |
+ TestParseInput input( |
+ "a = 1\n" // Unused outside of template. |
+ "template(\"templ\") {\n" |
+ " print(a)\n" |
+ "}\n"); |
+ ASSERT_FALSE(input.has_error()) << input.parse_err().message(); |
+ |
+ Err err; |
+ input.parsed()->Execute(setup.scope(), &err); |
+ ASSERT_FALSE(err.has_error()) << err.message(); |
+ |
+ // Normally the loader calls CheckForUnusedVars() when it loads a file |
+ // since normal blocks don't do this check. To avoid having to make this |
+ // test much more complicated, just explicitly do the check to make sure |
+ // things are marked properly. |
+ setup.scope()->CheckForUnusedVars(&err); |
+ EXPECT_FALSE(err.has_error()); |
+} |