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// Copyright 2020 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 <sstream>
#include <string>
#include "base/json/json_writer.h"
#include "base/macros.h"
#include "media/base/media_serializers.h"
#include "media/base/status.h"
#include "media/base/test_helpers.h"
#include "testing/gtest/include/gtest/gtest.h"
using ::testing::HasSubstr;
namespace media {
class UselessThingToBeSerialized {
public:
explicit UselessThingToBeSerialized(const char* name) : name_(name) {}
const char* name_;
};
namespace internal {
template <>
struct MediaSerializer<UselessThingToBeSerialized> {
static base::Value Serialize(const UselessThingToBeSerialized& t) {
return base::Value(t.name_);
}
};
} // namespace internal
// Friend class of MediaLog for access to internal constants.
class StatusTest : public testing::Test {
public:
Status DontFail() { return OkStatus(); }
Status FailEasily() {
return Status(StatusCode::kCodeOnlyForTesting, "Message");
}
Status FailRecursively(unsigned int count) {
if (!count) {
return FailEasily();
}
return FailRecursively(count - 1).AddHere();
}
template <typename T>
Status FailWithData(const char* key, const T& t) {
return Status(StatusCode::kCodeOnlyForTesting, "Message", FROM_HERE)
.WithData(key, t);
}
Status FailWithCause() {
Status err = FailEasily();
return FailEasily().AddCause(std::move(err));
}
Status DoSomethingGiveItBack(Status me) {
me.WithData("data", "Hey you! psst! Help me outta here! I'm trapped!");
return me;
}
// Make sure that the typical usage of ErrorOr actually compiles.
ErrorOr<std::unique_ptr<int>> TypicalErrorOrUsage(bool succeed) {
if (succeed)
return std::make_unique<int>(123);
return Status(StatusCode::kCodeOnlyForTesting);
}
};
TEST_F(StatusTest, StaticOKMethodGivesCorrectSerialization) {
Status ok = DontFail();
base::Value actual = MediaSerialize(ok);
ASSERT_EQ(actual.GetString(), "Ok");
}
TEST_F(StatusTest, SingleLayerError) {
Status failed = FailEasily();
base::Value actual = MediaSerialize(failed);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code"),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 0ul);
const auto& stack = actual.FindListPath("stack")->GetList();
ASSERT_EQ(stack[0].DictSize(), 2ul); // line and file
// This is a bit fragile, since it's dependent on the file layout.
ASSERT_EQ(stack[0].FindIntPath("line").value_or(-1), 42);
ASSERT_THAT(*stack[0].FindStringPath("file"),
HasSubstr("status_unittest.cc"));
}
TEST_F(StatusTest, MultipleErrorLayer) {
Status failed = FailRecursively(3);
base::Value actual = MediaSerialize(failed);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code").value_or(-1),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 4ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 0ul);
const auto& stack = actual.FindListPath("stack")->GetList();
ASSERT_EQ(stack[0].DictSize(), 2ul); // line and file
}
TEST_F(StatusTest, CanHaveData) {
Status failed = FailWithData("example", "data");
base::Value actual = MediaSerialize(failed);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code").value_or(-1),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 1ul);
const auto& stack = actual.FindListPath("stack")->GetList();
ASSERT_EQ(stack[0].DictSize(), 2ul); // line and file
ASSERT_EQ(*actual.FindDictPath("data")->FindStringPath("example"), "data");
}
TEST_F(StatusTest, CanUseCustomSerializer) {
Status failed = FailWithData("example", UselessThingToBeSerialized("F"));
base::Value actual = MediaSerialize(failed);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code"),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 1ul);
const auto& stack = actual.FindListPath("stack")->GetList();
ASSERT_EQ(stack[0].DictSize(), 2ul); // line and file
ASSERT_EQ(*actual.FindDictPath("data")->FindStringPath("example"), "F");
}
TEST_F(StatusTest, CausedByHasVector) {
Status causal = FailWithCause();
base::Value actual = MediaSerialize(causal);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code").value_or(-1),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 0ul);
base::Value& nested = actual.FindListPath("causes")->GetList()[0];
ASSERT_EQ(nested.DictSize(), 5ul);
ASSERT_EQ(nested.FindIntPath("status_code").value_or(-1),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*nested.FindStringPath("status_message"), "Message");
ASSERT_EQ(nested.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(nested.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(nested.FindDictPath("data")->DictSize(), 0ul);
}
TEST_F(StatusTest, CanCopyEasily) {
Status failed = FailEasily();
Status withData = DoSomethingGiveItBack(failed);
base::Value actual = MediaSerialize(failed);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code"),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 0ul);
actual = MediaSerialize(withData);
ASSERT_EQ(actual.DictSize(), 5ul);
ASSERT_EQ(actual.FindIntPath("status_code"),
static_cast<int32_t>(StatusCode::kCodeOnlyForTesting));
ASSERT_EQ(*actual.FindStringPath("status_message"), "Message");
ASSERT_EQ(actual.FindListPath("stack")->GetList().size(), 1ul);
ASSERT_EQ(actual.FindListPath("causes")->GetList().size(), 0ul);
ASSERT_EQ(actual.FindDictPath("data")->DictSize(), 1ul);
}
TEST_F(StatusTest, ErrorOrTypicalUsage) {
// Mostly so we have some code coverage on the default usage.
EXPECT_TRUE(TypicalErrorOrUsage(true).has_value());
EXPECT_FALSE(TypicalErrorOrUsage(true).has_error());
EXPECT_FALSE(TypicalErrorOrUsage(false).has_value());
EXPECT_TRUE(TypicalErrorOrUsage(false).has_error());
}
TEST_F(StatusTest, ErrorOrWithMoveOnlyType) {
ErrorOr<std::unique_ptr<int>> error_or(std::make_unique<int>(123));
EXPECT_TRUE(error_or.has_value());
EXPECT_FALSE(error_or.has_error());
std::unique_ptr<int> result = std::move(error_or.value());
EXPECT_EQ(error_or.value(), nullptr);
EXPECT_NE(result.get(), nullptr);
EXPECT_EQ(*result, 123);
}
TEST_F(StatusTest, ErrorOrWithCopyableType) {
ErrorOr<int> error_or(123);
EXPECT_TRUE(error_or.has_value());
EXPECT_FALSE(error_or.has_error());
int result = std::move(error_or.value());
EXPECT_EQ(result, 123);
// Should be unaffected by the move.
EXPECT_EQ(error_or.value(), 123);
}
TEST_F(StatusTest, ErrorOrMoveConstructionAndAssignment) {
// Make sure that we can move-construct and move-assign a move-only value.
ErrorOr<std::unique_ptr<int>> error_or_0(std::make_unique<int>(123));
ErrorOr<std::unique_ptr<int>> error_or_1(std::move(error_or_0));
EXPECT_EQ(error_or_0.value(), nullptr);
ErrorOr<std::unique_ptr<int>> error_or_2 = std::move(error_or_1);
EXPECT_EQ(error_or_1.value(), nullptr);
// |error_or_2| should have gotten the original.
std::unique_ptr<int> value = std::move(error_or_2.value());
EXPECT_EQ(*value, 123);
}
TEST_F(StatusTest, ErrorOrCopyWorks) {
// Make sure that we can move-construct and move-assign a move-only value.
ErrorOr<int> error_or_0(123);
ErrorOr<int> error_or_1(std::move(error_or_0));
ErrorOr<int> error_or_2 = std::move(error_or_1);
EXPECT_EQ(error_or_2.value(), 123);
}
} // namespace media
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