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// Copyright (c) 2013 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/scheduler.h"
#include "tools/gn/scope.h"
#include "tools/gn/test_with_scope.h"
// Checks that we find unused identifiers in targets.
TEST(FunctionsTarget, CheckUnused) {
Scheduler scheduler;
TestWithScope setup;
// The target generator needs a place to put the targets or it will fail.
Scope::ItemVector item_collector;
setup.scope()->set_item_collector(&item_collector);
// Test a good one first.
TestParseInput good_input(
"source_set(\"foo\") {\n"
"}\n");
ASSERT_FALSE(good_input.has_error());
Err err;
good_input.parsed()->Execute(setup.scope(), &err);
ASSERT_FALSE(err.has_error()) << err.message();
// Test a source set (this covers everything but component) with an unused
// variable.
TestParseInput source_set_input(
"source_set(\"foo\") {\n"
" unused = 5\n"
"}\n");
ASSERT_FALSE(source_set_input.has_error());
err = Err();
source_set_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error());
// Test a component, which is a different code path.
TestParseInput component_input(
"component_mode = \"static_library\"\n"
"component(\"bar\") {\n"
" unused = 5\n"
"}\n");
ASSERT_FALSE(component_input.has_error());
err = Err();
component_input.parsed()->Execute(setup.scope(), &err);
ASSERT_TRUE(err.has_error()) << err.message();
}
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