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// 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());
}
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