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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/base/source_location.h"
#include <optional>
#include <string_view>
#include "base/location.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace remoting {
namespace {
// The name of the GetTestLocation function.
static constexpr std::string_view kTestFunctionName = "GetTestLocation";
// The name of this file.
static constexpr std::string_view kTestFileName = __FILE_NAME__;
SourceLocation GetTestLocation() {
return FROM_HERE;
}
SourceLocation GetTestLocationWithBackingStore() {
SourceLocation location_without_backing_store = GetTestLocation();
return SourceLocation::CreateWithBackingStoreForTesting(
location_without_backing_store.function_name(),
location_without_backing_store.file_name(),
location_without_backing_store.line_number());
}
} // namespace
TEST(SourceLocation, Equality) {
SourceLocation null_location_1;
SourceLocation null_location_2;
SourceLocation non_null_location_1 = FROM_HERE;
SourceLocation non_null_location_2 = FROM_HERE;
ASSERT_EQ(null_location_1, null_location_1);
ASSERT_EQ(null_location_1, null_location_2);
ASSERT_EQ(non_null_location_1, non_null_location_1);
ASSERT_NE(null_location_1, non_null_location_1);
ASSERT_NE(non_null_location_1, non_null_location_2);
}
TEST(SourceLocation, CreateWithBaseLocation) {
SourceLocation location = GetTestLocation();
ASSERT_FALSE(location.is_null());
ASSERT_FALSE(location.HasBackingStoreForTesting());
ASSERT_EQ(std::string_view(location.function_name()), kTestFunctionName);
ASSERT_TRUE(std::string_view(location.file_name()).ends_with(kTestFileName));
ASSERT_GT(location.line_number(), -1);
std::string location_string = location.ToString();
ASSERT_NE(location_string.find(kTestFunctionName), std::string::npos);
ASSERT_NE(location_string.find(kTestFileName), std::string::npos);
}
TEST(SourceLocation, CreateWithBackingStore) {
SourceLocation location = GetTestLocationWithBackingStore();
ASSERT_FALSE(location.is_null());
ASSERT_TRUE(location.HasBackingStoreForTesting());
ASSERT_EQ(std::string_view(location.function_name()), kTestFunctionName);
ASSERT_TRUE(std::string_view(location.file_name()).ends_with(kTestFileName));
ASSERT_GT(location.line_number(), -1);
std::string location_string = location.ToString();
ASSERT_NE(location_string.find(kTestFunctionName), std::string::npos);
ASSERT_NE(location_string.find(kTestFileName), std::string::npos);
}
TEST(SourceLocation, CreateWithNullBaseLocation) {
SourceLocation location = base::Location();
ASSERT_TRUE(location.is_null());
ASSERT_FALSE(location.HasBackingStoreForTesting());
ASSERT_EQ(location.function_name(), nullptr);
ASSERT_EQ(location.file_name(), nullptr);
ASSERT_EQ(location.line_number(), -1);
}
TEST(SourceLocation,
CreateNullLocationWithBackingStore_BackingStoreNotAllocated) {
SourceLocation location = SourceLocation::CreateWithBackingStoreForTesting(
std::nullopt, std::nullopt, -1);
ASSERT_TRUE(location.is_null());
ASSERT_FALSE(location.HasBackingStoreForTesting());
ASSERT_EQ(location.function_name(), nullptr);
ASSERT_EQ(location.file_name(), nullptr);
ASSERT_EQ(location.line_number(), -1);
}
TEST(SourceLocation, MoveWithoutBackingStore) {
SourceLocation location_1 = GetTestLocation();
ASSERT_FALSE(location_1.HasBackingStoreForTesting());
const char* function_name = location_1.function_name();
const char* file_name = location_1.file_name();
int line_number = location_1.line_number();
SourceLocation location_2 = std::move(location_1);
ASSERT_FALSE(location_2.HasBackingStoreForTesting());
ASSERT_EQ(location_2.function_name(), function_name);
ASSERT_EQ(location_2.file_name(), file_name);
ASSERT_EQ(location_2.line_number(), line_number);
}
TEST(SourceLocation, MoveWithBackingStore) {
SourceLocation location_1 = GetTestLocationWithBackingStore();
ASSERT_TRUE(location_1.HasBackingStoreForTesting());
const char* function_name = location_1.function_name();
const char* file_name = location_1.file_name();
int line_number = location_1.line_number();
SourceLocation location_2 = std::move(location_1);
ASSERT_TRUE(location_2.HasBackingStoreForTesting());
ASSERT_EQ(location_2.function_name(), function_name);
// The backing store ownership has been transferred, while its memory remains
// unchanged.
ASSERT_EQ(location_2.file_name(), file_name);
ASSERT_EQ(location_2.line_number(), line_number);
}
TEST(SourceLocation, CopyWithoutBackingStore) {
SourceLocation location_1 = GetTestLocation();
ASSERT_FALSE(location_1.HasBackingStoreForTesting());
SourceLocation location_2 = location_1;
ASSERT_FALSE(location_2.HasBackingStoreForTesting());
// They point to the same addresses.
ASSERT_EQ(location_2.function_name(), location_1.function_name());
ASSERT_EQ(location_2.file_name(), location_1.file_name());
ASSERT_EQ(location_2.line_number(), location_1.line_number());
}
TEST(SourceLocation, CopyWithBackingStore) {
SourceLocation location_1 = GetTestLocationWithBackingStore();
ASSERT_TRUE(location_1.HasBackingStoreForTesting());
SourceLocation location_2 = location_1;
ASSERT_TRUE(location_2.HasBackingStoreForTesting());
// The addresses are different but the strings are the same.
ASSERT_NE(location_2.function_name(), location_1.function_name());
ASSERT_NE(location_2.file_name(), location_1.file_name());
ASSERT_EQ(std::string_view(location_2.function_name()),
std::string_view(location_1.function_name()));
ASSERT_EQ(std::string_view(location_2.file_name()),
std::string_view(location_1.file_name()));
ASSERT_EQ(location_2.line_number(), location_1.line_number());
}
} // namespace remoting
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