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This uses “static” at function scope to avoid making local copies, even in cases where the compiler can’t see that the local copy is unnecessary. “constexpr” adds additional safety in that it prevents global state from being initialized from any runtime dependencies, which would be undesirable. At namespace scope, “constexpr” is also used where appropriate. For the most part, this was a mechanical transformation for things matching '(^| )const [^=]*\['. Similar transformations could be applied to non-arrays in some cases, but there’s limited practical impact in most non-array cases relative to arrays, there are far more use sites, and much more manual intervention would be required. Change-Id: I3513b739ee8b0be026f8285475cddc5f9cc81152 Reviewed-on: https://chromium-review.googlesource.com/583997 Commit-Queue: Mark Mentovai <mark@chromium.org> Reviewed-by: Leonard Mosescu <mosescu@chromium.org>
249 lines
8.0 KiB
C++
249 lines
8.0 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "util/misc/uuid.h"
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#include <string.h>
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#include <sys/types.h>
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#include <string>
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#include "base/format_macros.h"
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#include "base/macros.h"
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#include "base/scoped_generic.h"
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#include "base/strings/stringprintf.h"
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#include "gtest/gtest.h"
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namespace crashpad {
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namespace test {
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namespace {
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TEST(UUID, UUID) {
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UUID uuid_zero;
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uuid_zero.InitializeToZero();
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EXPECT_EQ(uuid_zero.data_1, 0u);
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EXPECT_EQ(uuid_zero.data_2, 0u);
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EXPECT_EQ(uuid_zero.data_3, 0u);
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EXPECT_EQ(uuid_zero.data_4[0], 0u);
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EXPECT_EQ(uuid_zero.data_4[1], 0u);
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EXPECT_EQ(uuid_zero.data_5[0], 0u);
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EXPECT_EQ(uuid_zero.data_5[1], 0u);
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EXPECT_EQ(uuid_zero.data_5[2], 0u);
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EXPECT_EQ(uuid_zero.data_5[3], 0u);
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EXPECT_EQ(uuid_zero.data_5[4], 0u);
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EXPECT_EQ(uuid_zero.data_5[5], 0u);
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EXPECT_EQ(uuid_zero.ToString(), "00000000-0000-0000-0000-000000000000");
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static constexpr uint8_t kBytes[16] = {0x00,
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0x01,
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0x02,
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0x03,
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0x04,
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0x05,
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0x06,
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0x07,
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0x08,
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0x09,
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0x0a,
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0x0b,
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0x0c,
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0x0d,
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0x0e,
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0x0f};
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UUID uuid;
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uuid.InitializeFromBytes(kBytes);
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EXPECT_EQ(uuid.data_1, 0x00010203u);
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EXPECT_EQ(uuid.data_2, 0x0405u);
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EXPECT_EQ(uuid.data_3, 0x0607u);
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EXPECT_EQ(uuid.data_4[0], 0x08u);
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EXPECT_EQ(uuid.data_4[1], 0x09u);
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EXPECT_EQ(uuid.data_5[0], 0x0au);
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EXPECT_EQ(uuid.data_5[1], 0x0bu);
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EXPECT_EQ(uuid.data_5[2], 0x0cu);
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EXPECT_EQ(uuid.data_5[3], 0x0du);
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EXPECT_EQ(uuid.data_5[4], 0x0eu);
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EXPECT_EQ(uuid.data_5[5], 0x0fu);
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EXPECT_EQ(uuid.ToString(), "00010203-0405-0607-0809-0a0b0c0d0e0f");
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// Test both operator== and operator!=.
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EXPECT_FALSE(uuid == uuid_zero);
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EXPECT_NE(uuid, uuid_zero);
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UUID uuid_2;
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uuid_2.InitializeFromBytes(kBytes);
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EXPECT_EQ(uuid_2, uuid);
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EXPECT_FALSE(uuid != uuid_2);
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// Make sure that operator== and operator!= check the entire UUID.
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++uuid.data_1;
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EXPECT_NE(uuid, uuid_2);
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--uuid.data_1;
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++uuid.data_2;
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EXPECT_NE(uuid, uuid_2);
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--uuid.data_2;
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++uuid.data_3;
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EXPECT_NE(uuid, uuid_2);
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--uuid.data_3;
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for (size_t index = 0; index < arraysize(uuid.data_4); ++index) {
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++uuid.data_4[index];
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EXPECT_NE(uuid, uuid_2);
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--uuid.data_4[index];
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}
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for (size_t index = 0; index < arraysize(uuid.data_5); ++index) {
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++uuid.data_5[index];
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EXPECT_NE(uuid, uuid_2);
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--uuid.data_5[index];
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}
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// Make sure that the UUIDs are equal again, otherwise the test above may not
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// have been valid.
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EXPECT_EQ(uuid_2, uuid);
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static constexpr uint8_t kMoreBytes[16] = {0xff,
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0xee,
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0xdd,
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0xcc,
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0xbb,
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0xaa,
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0x99,
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0x88,
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0x77,
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0x66,
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0x55,
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0x44,
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0x33,
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0x22,
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0x11,
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0x00};
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uuid.InitializeFromBytes(kMoreBytes);
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EXPECT_EQ(uuid.data_1, 0xffeeddccu);
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EXPECT_EQ(uuid.data_2, 0xbbaau);
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EXPECT_EQ(uuid.data_3, 0x9988u);
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EXPECT_EQ(uuid.data_4[0], 0x77u);
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EXPECT_EQ(uuid.data_4[1], 0x66u);
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EXPECT_EQ(uuid.data_5[0], 0x55u);
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EXPECT_EQ(uuid.data_5[1], 0x44u);
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EXPECT_EQ(uuid.data_5[2], 0x33u);
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EXPECT_EQ(uuid.data_5[3], 0x22u);
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EXPECT_EQ(uuid.data_5[4], 0x11u);
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EXPECT_EQ(uuid.data_5[5], 0x00u);
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EXPECT_EQ(uuid.ToString(), "ffeeddcc-bbaa-9988-7766-554433221100");
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EXPECT_NE(uuid, uuid_2);
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EXPECT_NE(uuid, uuid_zero);
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// Test that UUID is standard layout.
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memset(&uuid, 0x45, 16);
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EXPECT_EQ(uuid.data_1, 0x45454545u);
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EXPECT_EQ(uuid.data_2, 0x4545u);
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EXPECT_EQ(uuid.data_3, 0x4545u);
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EXPECT_EQ(uuid.data_4[0], 0x45u);
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EXPECT_EQ(uuid.data_4[1], 0x45u);
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EXPECT_EQ(uuid.data_5[0], 0x45u);
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EXPECT_EQ(uuid.data_5[1], 0x45u);
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EXPECT_EQ(uuid.data_5[2], 0x45u);
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EXPECT_EQ(uuid.data_5[3], 0x45u);
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EXPECT_EQ(uuid.data_5[4], 0x45u);
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EXPECT_EQ(uuid.data_5[5], 0x45u);
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EXPECT_EQ(uuid.ToString(), "45454545-4545-4545-4545-454545454545");
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UUID initialized_generated;
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initialized_generated.InitializeWithNew();
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EXPECT_NE(initialized_generated, uuid_zero);
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}
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TEST(UUID, FromString) {
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static constexpr struct TestCase {
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const char* uuid_string;
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bool success;
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} kCases[] = {
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// Valid:
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{"c6849cb5-fe14-4a79-8978-9ae6034c521d", true},
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{"00000000-0000-0000-0000-000000000000", true},
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{"ffffffff-ffff-ffff-ffff-ffffffffffff", true},
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// Outside HEX range:
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{"7318z10b-c453-4cef-9dc8-015655cb4bbc", false},
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{"7318a10b-c453-4cef-9dz8-015655cb4bbc", false},
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// Incomplete:
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{"15655cb4-", false},
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{"7318f10b-c453-4cef-9dc8-015655cb4bb", false},
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{"318f10b-c453-4cef-9dc8-015655cb4bb2", false},
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{"7318f10b-c453-4ef-9dc8-015655cb4bb2", false},
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{"", false},
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{"abcd", false},
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// Trailing data:
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{"6d247a34-53d5-40ec-a90d-d8dea9e94cc01", false}
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};
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UUID uuid_zero;
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uuid_zero.InitializeToZero();
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const std::string empty_uuid = uuid_zero.ToString();
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for (size_t index = 0; index < arraysize(kCases); ++index) {
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const TestCase& test_case = kCases[index];
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SCOPED_TRACE(base::StringPrintf(
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"index %" PRIuS ": %s", index, test_case.uuid_string));
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UUID uuid;
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uuid.InitializeToZero();
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EXPECT_EQ(uuid.InitializeFromString(test_case.uuid_string),
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test_case.success);
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if (test_case.success) {
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EXPECT_EQ(uuid.ToString(), test_case.uuid_string);
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} else {
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EXPECT_EQ(uuid.ToString(), empty_uuid);
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}
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}
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// Test for case insensitivty.
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UUID uuid;
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uuid.InitializeFromString("F32E5BDC-2681-4C73-A4E6-911FFD89B846");
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EXPECT_EQ(uuid.ToString(), "f32e5bdc-2681-4c73-a4e6-911ffd89b846");
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// Mixed case.
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uuid.InitializeFromString("5762C15D-50b5-4171-a2e9-7429C9EC6CAB");
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EXPECT_EQ(uuid.ToString(), "5762c15d-50b5-4171-a2e9-7429c9ec6cab");
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}
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#if defined(OS_WIN)
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TEST(UUID, FromSystem) {
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::GUID system_uuid;
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ASSERT_EQ(UuidCreate(&system_uuid), RPC_S_OK);
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UUID uuid;
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uuid.InitializeFromSystemUUID(&system_uuid);
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RPC_WSTR system_string;
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ASSERT_EQ(UuidToString(&system_uuid, &system_string), RPC_S_OK);
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struct ScopedRpcStringFreeTraits {
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static RPC_WSTR* InvalidValue() { return nullptr; }
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static void Free(RPC_WSTR* rpc_string) {
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EXPECT_EQ(RpcStringFree(rpc_string), RPC_S_OK);
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}
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};
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using ScopedRpcString =
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base::ScopedGeneric<RPC_WSTR*, ScopedRpcStringFreeTraits>;
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ScopedRpcString scoped_system_string(&system_string);
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EXPECT_EQ(uuid.ToString16(), reinterpret_cast<wchar_t*>(system_string));
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}
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#endif // OS_WIN
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} // namespace
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} // namespace test
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} // namespace crashpad
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