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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.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/341324165): Fix and remove.
#pragma allow_unsafe_buffers
#endif
#include "base/memory/raw_span.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
// This file contains tests related to raw_span, to show that they
// convert to span.
TEST(RawSpan, ConvertToSpan) {
int arr[3] = {100, 101, 102};
base::raw_span<int> span1(arr);
base::span<int> span2(span1);
base::span<int> span3;
span3 = span1;
EXPECT_THAT(span1, ::testing::ElementsAre(100, 101, 102));
EXPECT_THAT(span2, ::testing::ElementsAre(100, 101, 102));
EXPECT_THAT(span3, ::testing::ElementsAre(100, 101, 102));
}
TEST(RawSpan, ConvertFromSpan) {
int arr[3] = {100, 101, 102};
base::span<int> span1(arr);
base::raw_span<int> span2(span1);
base::raw_span<int> span3;
span3 = span1;
EXPECT_THAT(span1, ::testing::ElementsAre(100, 101, 102));
EXPECT_THAT(span2, ::testing::ElementsAre(100, 101, 102));
EXPECT_THAT(span3, ::testing::ElementsAre(100, 101, 102));
}
TEST(RawSpan, UnderstandsDanglingAttribute) {
// Test passes if it doesn't trip Dangling Ptr Detectors.
int* arr = new int[3];
base::raw_span<int, DisableDanglingPtrDetection> span(arr, 3u);
delete[] span.data();
}
TEST(RawSpan, ExtractAsDangling) {
// Test passes if it doesn't trip Dangling Ptr Detectors.
int* arr = new int[3];
base::raw_span<int> span(arr, 3u);
delete[] base::ExtractAsDanglingSpan(span).data();
}
TEST(RawSpan, SameSlotAssignmentWhenDangling) {
int* arr = new int[3];
base::raw_span<int, DisableDanglingPtrDetection> span(arr, 3u);
delete[] arr; // Make the pointer dangle.
// This test is designed to test for crbug.com/347461704, but as #comment13
// explains, `raw_span<>` doesn't exhibit the suspected buggy behavior. Keep
// the test just in case the implementation changes in the future.
span = span.subspan<1>();
}
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