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snix/third_party/abseil_cpp/absl/status/status_test.cc
Vincent Ambo fc8dc48020 Add 'third_party/abseil_cpp/' from commit '768eb2ca28' 
git-subtree-dir: third_party/abseil_cpp
git-subtree-mainline: ffb2ae54be
git-subtree-split: 768eb2ca28
2020-05-20 02:32:24 +01:00

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// Copyright 2019 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/status/status.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/strings/str_cat.h"
namespace {
using ::testing::Eq;
using ::testing::HasSubstr;
using ::testing::Optional;
using ::testing::UnorderedElementsAreArray;
TEST(StatusCode, InsertionOperator) {
const absl::StatusCode code = absl::StatusCode::kUnknown;
std::ostringstream oss;
oss << code;
EXPECT_EQ(oss.str(), absl::StatusCodeToString(code));
}
// This structure holds the details for testing a single error code,
// its creator, and its classifier.
struct ErrorTest {
absl::StatusCode code;
using Creator = absl::Status (*)(absl::string_view);
using Classifier = bool (*)(const absl::Status&);
Creator creator;
Classifier classifier;
};
constexpr ErrorTest kErrorTests[]{
{absl::StatusCode::kCancelled, absl::CancelledError, absl::IsCancelled},
{absl::StatusCode::kUnknown, absl::UnknownError, absl::IsUnknown},
{absl::StatusCode::kInvalidArgument, absl::InvalidArgumentError,
absl::IsInvalidArgument},
{absl::StatusCode::kDeadlineExceeded, absl::DeadlineExceededError,
absl::IsDeadlineExceeded},
{absl::StatusCode::kNotFound, absl::NotFoundError, absl::IsNotFound},
{absl::StatusCode::kAlreadyExists, absl::AlreadyExistsError,
absl::IsAlreadyExists},
{absl::StatusCode::kPermissionDenied, absl::PermissionDeniedError,
absl::IsPermissionDenied},
{absl::StatusCode::kResourceExhausted, absl::ResourceExhaustedError,
absl::IsResourceExhausted},
{absl::StatusCode::kFailedPrecondition, absl::FailedPreconditionError,
absl::IsFailedPrecondition},
{absl::StatusCode::kAborted, absl::AbortedError, absl::IsAborted},
{absl::StatusCode::kOutOfRange, absl::OutOfRangeError, absl::IsOutOfRange},
{absl::StatusCode::kUnimplemented, absl::UnimplementedError,
absl::IsUnimplemented},
{absl::StatusCode::kInternal, absl::InternalError, absl::IsInternal},
{absl::StatusCode::kUnavailable, absl::UnavailableError,
absl::IsUnavailable},
{absl::StatusCode::kDataLoss, absl::DataLossError, absl::IsDataLoss},
{absl::StatusCode::kUnauthenticated, absl::UnauthenticatedError,
absl::IsUnauthenticated},
};
TEST(Status, CreateAndClassify) {
for (const auto& test : kErrorTests) {
SCOPED_TRACE(absl::StatusCodeToString(test.code));
// Ensure that the creator does, in fact, create status objects with the
// expected error code and message.
std::string message =
absl::StrCat("error code ", test.code, " test message");
absl::Status status = test.creator(message);
EXPECT_EQ(test.code, status.code());
EXPECT_EQ(message, status.message());
// Ensure that the classifier returns true for a status produced by the
// creator.
EXPECT_TRUE(test.classifier(status));
// Ensure that the classifier returns false for status with a different
// code.
for (const auto& other : kErrorTests) {
if (other.code != test.code) {
EXPECT_FALSE(test.classifier(absl::Status(other.code, "")))
<< " other.code = " << other.code;
}
}
}
}
TEST(Status, DefaultConstructor) {
absl::Status status;
EXPECT_TRUE(status.ok());
EXPECT_EQ(absl::StatusCode::kOk, status.code());
EXPECT_EQ("", status.message());
}
TEST(Status, OkStatus) {
absl::Status status = absl::OkStatus();
EXPECT_TRUE(status.ok());
EXPECT_EQ(absl::StatusCode::kOk, status.code());
EXPECT_EQ("", status.message());
}
TEST(Status, ConstructorWithCodeMessage) {
{
absl::Status status(absl::StatusCode::kCancelled, "");
EXPECT_FALSE(status.ok());
EXPECT_EQ(absl::StatusCode::kCancelled, status.code());
EXPECT_EQ("", status.message());
}
{
absl::Status status(absl::StatusCode::kInternal, "message");
EXPECT_FALSE(status.ok());
EXPECT_EQ(absl::StatusCode::kInternal, status.code());
EXPECT_EQ("message", status.message());
}
}
TEST(Status, ConstructOutOfRangeCode) {
const int kRawCode = 9999;
absl::Status status(static_cast<absl::StatusCode>(kRawCode), "");
EXPECT_EQ(absl::StatusCode::kUnknown, status.code());
EXPECT_EQ(kRawCode, status.raw_code());
}
constexpr char kUrl1[] = "url.payload.1";
constexpr char kUrl2[] = "url.payload.2";
constexpr char kUrl3[] = "url.payload.3";
constexpr char kUrl4[] = "url.payload.xx";
constexpr char kPayload1[] = "aaaaa";
constexpr char kPayload2[] = "bbbbb";
constexpr char kPayload3[] = "ccccc";
using PayloadsVec = std::vector<std::pair<std::string, absl::Cord>>;
TEST(Status, TestGetSetPayload) {
absl::Status ok_status = absl::OkStatus();
ok_status.SetPayload(kUrl1, absl::Cord(kPayload1));
ok_status.SetPayload(kUrl2, absl::Cord(kPayload2));
EXPECT_FALSE(ok_status.GetPayload(kUrl1));
EXPECT_FALSE(ok_status.GetPayload(kUrl2));
absl::Status bad_status(absl::StatusCode::kInternal, "fail");
bad_status.SetPayload(kUrl1, absl::Cord(kPayload1));
bad_status.SetPayload(kUrl2, absl::Cord(kPayload2));
EXPECT_THAT(bad_status.GetPayload(kUrl1), Optional(Eq(kPayload1)));
EXPECT_THAT(bad_status.GetPayload(kUrl2), Optional(Eq(kPayload2)));
EXPECT_FALSE(bad_status.GetPayload(kUrl3));
bad_status.SetPayload(kUrl1, absl::Cord(kPayload3));
EXPECT_THAT(bad_status.GetPayload(kUrl1), Optional(Eq(kPayload3)));
// Testing dynamically generated type_url
bad_status.SetPayload(absl::StrCat(kUrl1, ".1"), absl::Cord(kPayload1));
EXPECT_THAT(bad_status.GetPayload(absl::StrCat(kUrl1, ".1")),
Optional(Eq(kPayload1)));
}
TEST(Status, TestErasePayload) {
absl::Status bad_status(absl::StatusCode::kInternal, "fail");
bad_status.SetPayload(kUrl1, absl::Cord(kPayload1));
bad_status.SetPayload(kUrl2, absl::Cord(kPayload2));
bad_status.SetPayload(kUrl3, absl::Cord(kPayload3));
EXPECT_FALSE(bad_status.ErasePayload(kUrl4));
EXPECT_TRUE(bad_status.GetPayload(kUrl2));
EXPECT_TRUE(bad_status.ErasePayload(kUrl2));
EXPECT_FALSE(bad_status.GetPayload(kUrl2));
EXPECT_FALSE(bad_status.ErasePayload(kUrl2));
EXPECT_TRUE(bad_status.ErasePayload(kUrl1));
EXPECT_TRUE(bad_status.ErasePayload(kUrl3));
bad_status.SetPayload(kUrl1, absl::Cord(kPayload1));
EXPECT_TRUE(bad_status.ErasePayload(kUrl1));
}
TEST(Status, TestComparePayloads) {
absl::Status bad_status1(absl::StatusCode::kInternal, "fail");
bad_status1.SetPayload(kUrl1, absl::Cord(kPayload1));
bad_status1.SetPayload(kUrl2, absl::Cord(kPayload2));
bad_status1.SetPayload(kUrl3, absl::Cord(kPayload3));
absl::Status bad_status2(absl::StatusCode::kInternal, "fail");
bad_status2.SetPayload(kUrl2, absl::Cord(kPayload2));
bad_status2.SetPayload(kUrl3, absl::Cord(kPayload3));
bad_status2.SetPayload(kUrl1, absl::Cord(kPayload1));
EXPECT_EQ(bad_status1, bad_status2);
}
TEST(Status, TestComparePayloadsAfterErase) {
absl::Status payload_status(absl::StatusCode::kInternal, "");
payload_status.SetPayload(kUrl1, absl::Cord(kPayload1));
payload_status.SetPayload(kUrl2, absl::Cord(kPayload2));
absl::Status empty_status(absl::StatusCode::kInternal, "");
// Different payloads, not equal
EXPECT_NE(payload_status, empty_status);
EXPECT_TRUE(payload_status.ErasePayload(kUrl1));
// Still Different payloads, still not equal.
EXPECT_NE(payload_status, empty_status);
EXPECT_TRUE(payload_status.ErasePayload(kUrl2));
// Both empty payloads, should be equal
EXPECT_EQ(payload_status, empty_status);
}
PayloadsVec AllVisitedPayloads(const absl::Status& s) {
PayloadsVec result;
s.ForEachPayload([&](absl::string_view type_url, const absl::Cord& payload) {
result.push_back(std::make_pair(std::string(type_url), payload));
});
return result;
}
TEST(Status, TestForEachPayload) {
absl::Status bad_status(absl::StatusCode::kInternal, "fail");
bad_status.SetPayload(kUrl1, absl::Cord(kPayload1));
bad_status.SetPayload(kUrl2, absl::Cord(kPayload2));
bad_status.SetPayload(kUrl3, absl::Cord(kPayload3));
int count = 0;
bad_status.ForEachPayload(
[&count](absl::string_view, const absl::Cord&) { ++count; });
EXPECT_EQ(count, 3);
PayloadsVec expected_payloads = {{kUrl1, absl::Cord(kPayload1)},
{kUrl2, absl::Cord(kPayload2)},
{kUrl3, absl::Cord(kPayload3)}};
// Test that we visit all the payloads in the status.
PayloadsVec visited_payloads = AllVisitedPayloads(bad_status);
EXPECT_THAT(visited_payloads, UnorderedElementsAreArray(expected_payloads));
// Test that visitation order is not consistent between run.
std::vector<absl::Status> scratch;
while (true) {
scratch.emplace_back(absl::StatusCode::kInternal, "fail");
scratch.back().SetPayload(kUrl1, absl::Cord(kPayload1));
scratch.back().SetPayload(kUrl2, absl::Cord(kPayload2));
scratch.back().SetPayload(kUrl3, absl::Cord(kPayload3));
if (AllVisitedPayloads(scratch.back()) != visited_payloads) {
break;
}
}
}
TEST(Status, ToString) {
absl::Status s(absl::StatusCode::kInternal, "fail");
EXPECT_EQ("INTERNAL: fail", s.ToString());
s.SetPayload("foo", absl::Cord("bar"));
EXPECT_EQ("INTERNAL: fail [foo='bar']", s.ToString());
s.SetPayload("bar", absl::Cord("\377"));
EXPECT_THAT(s.ToString(),
AllOf(HasSubstr("INTERNAL: fail"), HasSubstr("[foo='bar']"),
HasSubstr("[bar='\\xff']")));
}
absl::Status EraseAndReturn(const absl::Status& base) {
absl::Status copy = base;
EXPECT_TRUE(copy.ErasePayload(kUrl1));
return copy;
}
TEST(Status, CopyOnWriteForErasePayload) {
{
absl::Status base(absl::StatusCode::kInvalidArgument, "fail");
base.SetPayload(kUrl1, absl::Cord(kPayload1));
EXPECT_TRUE(base.GetPayload(kUrl1).has_value());
absl::Status copy = EraseAndReturn(base);
EXPECT_TRUE(base.GetPayload(kUrl1).has_value());
EXPECT_FALSE(copy.GetPayload(kUrl1).has_value());
}
{
absl::Status base(absl::StatusCode::kInvalidArgument, "fail");
base.SetPayload(kUrl1, absl::Cord(kPayload1));
absl::Status copy = base;
EXPECT_TRUE(base.GetPayload(kUrl1).has_value());
EXPECT_TRUE(copy.GetPayload(kUrl1).has_value());
EXPECT_TRUE(base.ErasePayload(kUrl1));
EXPECT_FALSE(base.GetPayload(kUrl1).has_value());
EXPECT_TRUE(copy.GetPayload(kUrl1).has_value());
}
}
TEST(Status, CopyConstructor) {
{
absl::Status status;
absl::Status copy(status);
EXPECT_EQ(copy, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
absl::Status copy(status);
EXPECT_EQ(copy, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
status.SetPayload(kUrl1, absl::Cord(kPayload1));
absl::Status copy(status);
EXPECT_EQ(copy, status);
}
}
TEST(Status, CopyAssignment) {
absl::Status assignee;
{
absl::Status status;
assignee = status;
EXPECT_EQ(assignee, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
assignee = status;
EXPECT_EQ(assignee, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
status.SetPayload(kUrl1, absl::Cord(kPayload1));
assignee = status;
EXPECT_EQ(assignee, status);
}
}
TEST(Status, CopyAssignmentIsNotRef) {
const absl::Status status_orig(absl::StatusCode::kInvalidArgument, "message");
absl::Status status_copy = status_orig;
EXPECT_EQ(status_orig, status_copy);
status_copy.SetPayload(kUrl1, absl::Cord(kPayload1));
EXPECT_NE(status_orig, status_copy);
}
TEST(Status, MoveConstructor) {
{
absl::Status status;
absl::Status copy(absl::Status{});
EXPECT_EQ(copy, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
absl::Status copy(
absl::Status(absl::StatusCode::kInvalidArgument, "message"));
EXPECT_EQ(copy, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
status.SetPayload(kUrl1, absl::Cord(kPayload1));
absl::Status copy1(status);
absl::Status copy2(std::move(status));
EXPECT_EQ(copy1, copy2);
}
}
TEST(Status, MoveAssignment) {
absl::Status assignee;
{
absl::Status status;
assignee = absl::Status();
EXPECT_EQ(assignee, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
assignee = absl::Status(absl::StatusCode::kInvalidArgument, "message");
EXPECT_EQ(assignee, status);
}
{
absl::Status status(absl::StatusCode::kInvalidArgument, "message");
status.SetPayload(kUrl1, absl::Cord(kPayload1));
absl::Status copy(status);
assignee = std::move(status);
EXPECT_EQ(assignee, copy);
}
}
TEST(Status, Update) {
absl::Status s;
s.Update(absl::OkStatus());
EXPECT_TRUE(s.ok());
const absl::Status a(absl::StatusCode::kCancelled, "message");
s.Update(a);
EXPECT_EQ(s, a);
const absl::Status b(absl::StatusCode::kInternal, "other message");
s.Update(b);
EXPECT_EQ(s, a);
s.Update(absl::OkStatus());
EXPECT_EQ(s, a);
EXPECT_FALSE(s.ok());
}
TEST(Status, Equality) {
absl::Status ok;
absl::Status no_payload = absl::CancelledError("no payload");
absl::Status one_payload = absl::InvalidArgumentError("one payload");
one_payload.SetPayload(kUrl1, absl::Cord(kPayload1));
absl::Status two_payloads = one_payload;
two_payloads.SetPayload(kUrl2, absl::Cord(kPayload2));
const std::array<absl::Status, 4> status_arr = {ok, no_payload, one_payload,
two_payloads};
for (int i = 0; i < status_arr.size(); i++) {
for (int j = 0; j < status_arr.size(); j++) {
if (i == j) {
EXPECT_TRUE(status_arr[i] == status_arr[j]);
EXPECT_FALSE(status_arr[i] != status_arr[j]);
} else {
EXPECT_TRUE(status_arr[i] != status_arr[j]);
EXPECT_FALSE(status_arr[i] == status_arr[j]);
}
}
}
}
TEST(Status, Swap) {
auto test_swap = [](const absl::Status& s1, const absl::Status& s2) {
absl::Status copy1 = s1, copy2 = s2;
swap(copy1, copy2);
EXPECT_EQ(copy1, s2);
EXPECT_EQ(copy2, s1);
};
const absl::Status ok;
const absl::Status no_payload(absl::StatusCode::kAlreadyExists, "no payload");
absl::Status with_payload(absl::StatusCode::kInternal, "with payload");
with_payload.SetPayload(kUrl1, absl::Cord(kPayload1));
test_swap(ok, no_payload);
test_swap(no_payload, ok);
test_swap(ok, with_payload);
test_swap(with_payload, ok);
test_swap(no_payload, with_payload);
test_swap(with_payload, no_payload);
}
} // namespace
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