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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/input_file.h"
#include "tools/gn/parse_tree.h"
#include "tools/gn/scope.h"
#include "tools/gn/test_with_scope.h"
TEST(Scope, NonRecursiveMergeTo) {
TestWithScope setup;
// Make a pretend parse node with proper tracking that we can blame for the
// given value.
InputFile input_file(SourceFile("//foo"));
Token assignment_token(Location(&input_file, 1, 1), Token::STRING,
"\"hello\"");
LiteralNode assignment;
assignment.set_value(assignment_token);
Value old_value(&assignment, "hello");
setup.scope()->SetValue("v", old_value, &assignment);
// Detect collisions of values' values.
{
Scope new_scope(setup.settings());
Value new_value(&assignment, "goodbye");
new_scope.SetValue("v", new_value, &assignment);
Err err;
EXPECT_FALSE(new_scope.NonRecursiveMergeTo(
setup.scope(), &assignment, "error", &err));
EXPECT_TRUE(err.has_error());
}
// Don't flag values that technically collide but have the same value.
{
Scope new_scope(setup.settings());
Value new_value(&assignment, "hello");
new_scope.SetValue("v", new_value, &assignment);
Err err;
EXPECT_TRUE(new_scope.NonRecursiveMergeTo(
setup.scope(), &assignment, "error", &err));
EXPECT_FALSE(err.has_error());
}
}
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