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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/containers/to_value_list.h"
#include <set>
#include "base/containers/flat_set.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
// `Value` isn't copyable, so it's not possible to match against Value(x)
// directly in `testing::ElementsAre`. This is why Value(x) is replaced with
// IsInt(x).
auto IsInt(int value) {
return testing::Property(&Value::GetInt, testing::Eq(value));
}
template <class C>
void IdentityTest() {
C c = {1, 2, 3, 4, 5};
// See comment in `IsInt()` above.
EXPECT_THAT(ToValueList(c), testing::ElementsAre(IsInt(1), IsInt(2), IsInt(3),
IsInt(4), IsInt(5)));
}
template <class C>
void ProjectionTest() {
C c = {1, 2, 3, 4, 5};
// See comment in `IsInt()` above.
EXPECT_THAT(
ToValueList(c, [](int x) { return x + 1; }),
testing::ElementsAre(IsInt(2), IsInt(3), IsInt(4), IsInt(5), IsInt(6)));
}
TEST(ToListTest, Identity) {
IdentityTest<std::vector<int>>();
IdentityTest<std::set<int>>();
IdentityTest<int[]>();
IdentityTest<flat_set<int>>();
}
TEST(ToListTest, Projection) {
ProjectionTest<std::vector<int>>();
ProjectionTest<std::set<int>>();
ProjectionTest<int[]>();
ProjectionTest<flat_set<int>>();
}
// Validates that consuming projections work as intended (every single `Value`
// inside `Value::List` is a move-only type).
TEST(ToListTest, MoveOnly) {
Value::List list;
list.resize(10);
Value::List mapped_list = ToValueList(
std::move(list), [](Value& value) { return std::move(value); });
EXPECT_EQ(mapped_list.size(), 10U);
}
} // namespace
} // namespace base
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