ladybird/Tests/LibCpp/test-cpp-preprocessor.cpp
Itamar e57fdb63f8 Tests: Add regression tests for the LibCpp preprocessor
Similarly to the LibCpp parser regression tests, these tests run the
preprocessor on the .cpp test files under
Userland/LibCpp/Tests/preprocessor, and compare the output with existing
.txt ground truth files.
2021-08-14 12:40:55 +02:00

57 lines
1.6 KiB
C++

/*
* Copyright (c) 2021, Itamar S. <itamar8910@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/LexicalPath.h>
#include <LibCore/DirIterator.h>
#include <LibCore/File.h>
#include <LibCpp/Parser.h>
#include <LibTest/TestCase.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
constexpr char TESTS_ROOT_DIR[] = "/home/anon/cpp-tests/preprocessor";
static String read_all(const String& path)
{
auto result = Core::File::open(path, Core::OpenMode::ReadOnly);
VERIFY(!result.is_error());
auto content = result.value()->read_all();
return { reinterpret_cast<const char*>(content.data()), content.size() };
}
TEST_CASE(test_regression)
{
Core::DirIterator directory_iterator(TESTS_ROOT_DIR, Core::DirIterator::Flags::SkipDots);
while (directory_iterator.has_next()) {
auto file_path = directory_iterator.next_full_path();
auto path = LexicalPath { file_path };
if (!path.has_extension(".cpp"))
continue;
outln("Checking {}...", path.basename());
auto ast_file_path = String::formatted("{}.txt", file_path.substring(0, file_path.length() - sizeof(".cpp") + 1));
auto source = read_all(file_path);
auto target = read_all(ast_file_path);
StringView source_view(source);
Cpp::Preprocessor preprocessor(file_path, source_view);
auto target_lines = target.split_view('\n');
auto tokens = preprocessor.process_and_lex();
EXPECT_EQ(tokens.size(), target_lines.size());
for (size_t i = 0; i < tokens.size(); ++i) {
EXPECT_EQ(tokens[i].to_string(), target_lines[i]);
}
}
}