637 lines
25 KiB
C++
637 lines
25 KiB
C++
#include "./testutils.h"
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#include "../conversion/stringbuilder.h"
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#include "../conversion/stringconversion.h"
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#include "../io/ansiescapecodes.h"
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#include "../io/misc.h"
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#include "../io/nativefilestream.h"
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#include "../io/path.h"
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#include "../misc/parseerror.h"
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#include <cerrno>
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#include <cstdlib>
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#include <cstring>
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#include <fstream>
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#include <initializer_list>
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#include <iostream>
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#include <limits>
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#ifdef PLATFORM_UNIX
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#ifdef CPP_UTILITIES_USE_STANDARD_FILESYSTEM
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#include <filesystem>
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#endif
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#include <poll.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#endif
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#ifdef PLATFORM_WINDOWS
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#include <windows.h>
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#endif
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using namespace std;
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using namespace CppUtilities::EscapeCodes;
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/*!
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* \brief Contains classes and functions utilizing creating of test applications.
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*/
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namespace CppUtilities {
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/// \cond
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bool fileSystemItemExists(const string &path)
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{
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#ifdef PLATFORM_UNIX
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struct stat res;
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return stat(path.data(), &res) == 0;
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#else
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const auto widePath(convertMultiByteToWide(path));
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if (!widePath.first) {
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return false;
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}
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const auto fileType(GetFileAttributesW(widePath.first.get()));
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return fileType != INVALID_FILE_ATTRIBUTES;
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#endif
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}
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bool fileExists(const string &path)
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{
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#ifdef PLATFORM_UNIX
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struct stat res;
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return stat(path.data(), &res) == 0 && !S_ISDIR(res.st_mode);
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#else
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const auto widePath(convertMultiByteToWide(path));
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if (!widePath.first) {
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return false;
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}
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const auto fileType(GetFileAttributesW(widePath.first.get()));
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return (fileType != INVALID_FILE_ATTRIBUTES) && !(fileType & FILE_ATTRIBUTE_DIRECTORY) && !(fileType & FILE_ATTRIBUTE_DEVICE);
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#endif
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}
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bool dirExists(const string &path)
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{
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#ifdef PLATFORM_UNIX
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struct stat res;
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return stat(path.data(), &res) == 0 && S_ISDIR(res.st_mode);
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#else
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const auto widePath(convertMultiByteToWide(path));
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if (!widePath.first) {
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return false;
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}
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const auto fileType(GetFileAttributesW(widePath.first.get()));
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return (fileType != INVALID_FILE_ATTRIBUTES) && (fileType & FILE_ATTRIBUTE_DIRECTORY);
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#endif
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}
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bool makeDir(const string &path)
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{
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#ifdef PLATFORM_UNIX
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return mkdir(path.data(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) == 0;
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#else
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const auto widePath(convertMultiByteToWide(path));
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if (!widePath.first) {
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return false;
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}
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return CreateDirectoryW(widePath.first.get(), nullptr) || GetLastError() == ERROR_ALREADY_EXISTS;
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#endif
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}
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/// \endcond
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TestApplication *TestApplication::s_instance = nullptr;
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/*!
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* \class TestApplication
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* \brief The TestApplication class simplifies writing test applications that require opening test files.
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* \remarks Only one instance is allowed at a time (singletone class).
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*/
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/*!
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* \brief Constructs a TestApplication instance without further arguments.
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* \remarks This constructor skips parsing CLI arguments. Other initialization like reading environment variables
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* for test file paths and working directories is still done.
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* \throws Throws std::runtime_error if an instance has already been created.
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*/
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TestApplication::TestApplication()
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: TestApplication(0, nullptr)
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{
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}
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/*!
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* \brief Constructs a TestApplication instance for the specified arguments.
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* \throws Throws std::runtime_error if an instance has already been created.
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*/
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TestApplication::TestApplication(int argc, const char *const *argv)
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: m_listArg("list", 'l', "lists available test units")
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, m_runArg("run", 'r', "runs the tests")
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, m_testFilesPathArg("test-files-path", 'p', "specifies the path of the directory with test files", { "path" })
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, m_applicationPathArg("app-path", 'a', "specifies the path of the application to be tested", { "path" })
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, m_workingDirArg("working-dir", 'w', "specifies the directory to store working copies of test files", { "path" })
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, m_unitsArg("units", 'u', "specifies the units to test; omit to test all units", { "unit1", "unit2", "unit3" })
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{
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// check whether there is already an instance
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if (s_instance) {
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throw runtime_error("only one TestApplication instance allowed at a time");
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}
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s_instance = this;
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// handle specified arguments (if present)
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if (argc && argv) {
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// setup argument parser
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m_testFilesPathArg.setRequiredValueCount(Argument::varValueCount);
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m_unitsArg.setRequiredValueCount(Argument::varValueCount);
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m_runArg.setImplicit(true);
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m_runArg.setSubArguments({ &m_testFilesPathArg, &m_applicationPathArg, &m_workingDirArg, &m_unitsArg });
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m_parser.setMainArguments({ &m_runArg, &m_listArg, &m_parser.noColorArg(), &m_parser.helpArg() });
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// parse arguments
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try {
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m_parser.parseArgs(argc, argv, ParseArgumentBehavior::CheckConstraints | ParseArgumentBehavior::InvokeCallbacks);
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} catch (const ParseError &failure) {
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cerr << failure;
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m_valid = false;
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return;
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}
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// print help
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if (m_parser.helpArg().isPresent()) {
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exit(0);
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}
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}
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// set paths for testfiles
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// -> set paths set via CLI argument
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if (m_testFilesPathArg.isPresent()) {
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for (const char *const testFilesPath : m_testFilesPathArg.values()) {
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if (*testFilesPath) {
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m_testFilesPaths.emplace_back(argsToString(testFilesPath, '/'));
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} else {
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m_testFilesPaths.emplace_back("./");
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}
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}
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}
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// -> read TEST_FILE_PATH environment variable
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bool hasTestFilePathFromEnv;
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if (auto testFilePathFromEnv = readTestfilePathFromEnv(); (hasTestFilePathFromEnv = !testFilePathFromEnv.empty())) {
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m_testFilesPaths.emplace_back(move(testFilePathFromEnv));
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}
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// -> find source directory
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if (auto testFilePathFromSrcDirRef = readTestfilePathFromSrcRef(); !testFilePathFromSrcDirRef.empty()) {
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m_testFilesPaths.emplace_back(move(testFilePathFromSrcDirRef));
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}
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// -> try testfiles directory in working directory
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m_testFilesPaths.emplace_back("./testfiles/");
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for (const auto &testFilesPath : m_testFilesPaths) {
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cerr << testFilesPath << '\n';
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}
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// set path for working-copy
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if (m_workingDirArg.isPresent()) {
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if (*m_workingDirArg.values().front()) {
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(m_workingDir = m_workingDirArg.values().front()) += '/';
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} else {
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m_workingDir = "./";
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}
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} else if (const char *const workingDirEnv = getenv("WORKING_DIR")) {
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if (*workingDirEnv) {
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m_workingDir = argsToString(workingDirEnv, '/');
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}
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} else {
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if ((m_testFilesPathArg.isPresent() && !m_testFilesPathArg.values().empty()) || hasTestFilePathFromEnv) {
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m_workingDir = m_testFilesPaths.front() + "workingdir/";
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} else {
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m_workingDir = "./testfiles/workingdir/";
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}
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}
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cerr << "Directory used to store working copies:\n" << m_workingDir << '\n';
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// clear list of all additional profiling files created when forking the test application
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if (const char *const profrawListFile = getenv("LLVM_PROFILE_LIST_FILE")) {
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ofstream(profrawListFile, ios_base::trunc);
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}
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m_valid = true;
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}
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/*!
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* \brief Destroys the TestApplication.
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*/
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TestApplication::~TestApplication()
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{
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s_instance = nullptr;
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}
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/*!
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* \brief Returns the full path of the test file with the specified \a relativeTestFilePath.
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*
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* The specified \a relativeTestFilePath is considered to be a path to a test file which is relative
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* to at least one of the considered test file search directories.
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*
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* The following directories are searched for test files in the given order:
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* 1. The directories specified as CLI argument.
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* 2. The directory set via the environment variable `TEST_FILE_PATH`.
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* 3. The subdirectory "testfiles" within the source directory, if it could be determined via "srcref"-file.
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* 4. The subdirectory "testfiles" within present working directory.
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*/
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std::string TestApplication::testFilePath(const std::string &relativeTestFilePath) const
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{
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std::string path;
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for (const auto &testFilesPath : m_testFilesPaths) {
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if (fileExists(path = testFilesPath + relativeTestFilePath)) {
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return path;
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}
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}
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throw std::runtime_error("The test file \"" % relativeTestFilePath % "\" can not be located. Was looking under:\n"
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+ joinStrings(m_testFilesPaths, "\n", false, " - ", relativeTestFilePath));
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}
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/*!
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* \brief Returns the full path of the test directory with the specified \a relativeTestDirPath.
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*
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* This is the same as TestApplication::testFilePath() but for directories. Checkout the documentation of
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* TestApplication::testFilePath() for details about the lookup.
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*/
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std::string TestApplication::testDirPath(const std::string &relativeTestDirPath) const
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{
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std::string path;
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for (const auto &testFilesPath : m_testFilesPaths) {
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if (dirExists(path = testFilesPath + relativeTestDirPath)) {
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return path;
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}
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}
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throw std::runtime_error("The test directory \"" % relativeTestDirPath % "\" can not be located. Was looking under:\n"
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+ joinStrings(m_testFilesPaths, "\n", false, " - ", relativeTestDirPath));
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}
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/*!
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* \brief Returns the full path to a working copy of the test file with the specified \a relativeTestFilePath.
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*
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* The specified \a mode controls whether a working copy is actually created or whether just the path is returned.
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*
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* \remarks The test file is located using testFilePath().
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*/
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string TestApplication::workingCopyPath(const string &relativeTestFilePath, WorkingCopyMode mode) const
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{
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return workingCopyPathAs(relativeTestFilePath, relativeTestFilePath, mode);
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}
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/*!
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* \brief Returns the full path to a working copy of the test file with the specified \a relativeTestFilePath.
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*
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* The specified \a mode controls whether a working copy is actually created or whether just the path is returned. If only the
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* path is returned, the \a relativeTestFilePath is ignored.
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*
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* In contrast to workingCopyPath(), this method allows to adjust the relative path of the working copy within the working copy
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* directory via \a relativeWorkingCopyPath.
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*
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* \remarks
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* - The test file specified via \a relativeTestFilePath is located using testFilePath().
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* - The name of the working copy file specified via \a relativeWorkingCopyPath will be adjusted if it already exists in the file
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* system and can not be truncated.
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*/
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string TestApplication::workingCopyPathAs(
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const std::string &relativeTestFilePath, const std::string &relativeWorkingCopyPath, WorkingCopyMode mode) const
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{
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// ensure working directory is present
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if (!dirExists(m_workingDir) && !makeDir(m_workingDir)) {
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cerr << Phrases::Error << "Unable to create working copy for \"" << relativeTestFilePath << "\": can't create working directory \""
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<< m_workingDir << "\"." << Phrases::EndFlush;
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return string();
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}
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// ensure subdirectory exists
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const auto parts = splitString<vector<string>>(relativeWorkingCopyPath, "/", EmptyPartsTreat::Omit);
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if (!parts.empty()) {
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// create subdirectory level by level
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string currentLevel;
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currentLevel.reserve(m_workingDir.size() + relativeWorkingCopyPath.size() + 1);
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currentLevel.assign(m_workingDir);
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for (auto i = parts.cbegin(), end = parts.end() - 1; i != end; ++i) {
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if (currentLevel.back() != '/') {
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currentLevel += '/';
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}
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currentLevel += *i;
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// continue if subdirectory level already exists or we can successfully create the directory
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if (dirExists(currentLevel) || makeDir(currentLevel)) {
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continue;
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}
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// fail otherwise
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cerr << Phrases::Error << "Unable to create working copy for \"" << relativeWorkingCopyPath << "\": can't create directory \""
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<< currentLevel << "\" (inside working directory)." << Phrases::EndFlush;
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return string();
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}
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}
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// just return the path if we don't want to actually create a copy
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if (mode == WorkingCopyMode::NoCopy) {
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return m_workingDir + relativeWorkingCopyPath;
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}
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// copy the file
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const auto origFilePath(testFilePath(relativeTestFilePath));
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auto workingCopyPath(m_workingDir + relativeWorkingCopyPath);
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size_t workingCopyPathAttempt = 0;
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NativeFileStream origFile, workingCopy;
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origFile.open(origFilePath, ios_base::in | ios_base::binary);
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if (origFile.fail()) {
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cerr << Phrases::Error << "Unable to create working copy for \"" << relativeTestFilePath
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<< "\": an IO error occurred when opening original file \"" << origFilePath << "\"." << Phrases::EndFlush;
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cerr << "error: " << strerror(errno) << endl;
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return string();
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}
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workingCopy.open(workingCopyPath, ios_base::out | ios_base::binary | ios_base::trunc);
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while (workingCopy.fail() && fileSystemItemExists(workingCopyPath)) {
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// adjust the working copy path if the target file already exists and can not be truncated
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workingCopyPath = argsToString(m_workingDir, relativeWorkingCopyPath, '.', ++workingCopyPathAttempt);
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workingCopy.clear();
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workingCopy.open(workingCopyPath, ios_base::out | ios_base::binary | ios_base::trunc);
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}
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if (workingCopy.fail()) {
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cerr << Phrases::Error << "Unable to create working copy for \"" << relativeTestFilePath
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<< "\": an IO error occurred when opening target file \"" << workingCopyPath << "\"." << Phrases::EndFlush;
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cerr << "error: " << strerror(errno) << endl;
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return string();
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}
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workingCopy << origFile.rdbuf();
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workingCopy.close();
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if (!origFile.fail() && !workingCopy.fail()) {
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return workingCopyPath;
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}
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cerr << Phrases::Error << "Unable to create working copy for \"" << relativeTestFilePath << "\": ";
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if (origFile.fail()) {
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cerr << "an IO error occurred when reading original file \"" << origFilePath << "\"";
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return string();
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}
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if (workingCopy.fail()) {
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if (origFile.fail()) {
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cerr << " and ";
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}
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cerr << " an IO error occurred when writing to target file \"" << workingCopyPath << "\".";
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}
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cerr << "error: " << strerror(errno) << endl;
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return string();
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}
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#ifdef PLATFORM_UNIX
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/*!
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* \brief Executes an application with the specified \a args.
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* \remarks Provides internal implementation of execApp() and execHelperApp().
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*/
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static int execAppInternal(const char *appPath, const char *const *args, std::string &output, std::string &errors, bool suppressLogging, int timeout,
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const std::string &newProfilingPath, bool enableSearchPath = false)
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{
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// print log message
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if (!suppressLogging) {
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// print actual appPath and skip first argument instead
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cout << '-' << ' ' << appPath;
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if (*args) {
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for (const char *const *i = args + 1; *i; ++i) {
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cout << ' ' << *i;
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}
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}
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cout << endl;
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}
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// create pipes
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int coutPipes[2], cerrPipes[2];
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pipe(coutPipes);
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pipe(cerrPipes);
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const auto readCoutPipe = coutPipes[0], writeCoutPipe = coutPipes[1];
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const auto readCerrPipe = cerrPipes[0], writeCerrPipe = cerrPipes[1];
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// create child process
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if (const auto child = fork()) {
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// parent process: read stdout and stderr from child
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close(writeCoutPipe);
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close(writeCerrPipe);
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try {
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if (child == -1) {
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throw runtime_error("Unable to create fork");
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}
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// init file descriptor set for poll
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struct pollfd fileDescriptorSet[2];
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fileDescriptorSet[0].fd = readCoutPipe;
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fileDescriptorSet[1].fd = readCerrPipe;
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fileDescriptorSet[0].events = fileDescriptorSet[1].events = POLLIN;
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// init variables for reading
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char buffer[512];
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output.clear();
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errors.clear();
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// poll as long as at least one pipe is open
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do {
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const auto retpoll = poll(fileDescriptorSet, 2, timeout);
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if (retpoll == 0) {
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throw runtime_error("Poll time-out");
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}
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if (retpoll < 0) {
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throw runtime_error("Poll failed");
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}
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if (fileDescriptorSet[0].revents & POLLIN) {
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const auto count = read(readCoutPipe, buffer, sizeof(buffer));
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if (count > 0) {
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output.append(buffer, static_cast<size_t>(count));
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}
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} else if (fileDescriptorSet[0].revents & POLLHUP) {
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close(readCoutPipe);
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fileDescriptorSet[0].fd = -1;
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}
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if (fileDescriptorSet[1].revents & POLLIN) {
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const auto count = read(readCerrPipe, buffer, sizeof(buffer));
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if (count > 0) {
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errors.append(buffer, static_cast<size_t>(count));
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}
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} else if (fileDescriptorSet[1].revents & POLLHUP) {
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close(readCerrPipe);
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fileDescriptorSet[1].fd = -1;
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}
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} while (fileDescriptorSet[0].fd >= 0 || fileDescriptorSet[1].fd >= 0);
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} catch (...) {
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// ensure all pipes are closed in the error case
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close(readCoutPipe);
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close(readCerrPipe);
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throw;
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}
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// get return code
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int childReturnCode;
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waitpid(child, &childReturnCode, 0);
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return childReturnCode;
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} else {
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// child process
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// -> set pipes to be used for stdout/stderr
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dup2(writeCoutPipe, STDOUT_FILENO);
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dup2(writeCerrPipe, STDERR_FILENO);
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close(readCoutPipe);
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close(writeCoutPipe);
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close(readCerrPipe);
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close(writeCerrPipe);
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// -> modify environment variable LLVM_PROFILE_FILE to apply new path for profiling output
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if (!newProfilingPath.empty()) {
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setenv("LLVM_PROFILE_FILE", newProfilingPath.data(), true);
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}
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// -> execute application
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if (enableSearchPath) {
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execvp(appPath, const_cast<char *const *>(args));
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|
|
} else {
|
|
execv(appPath, const_cast<char *const *>(args));
|
|
}
|
|
cerr << Phrases::Error << "Unable to execute \"" << appPath << "\": execv() failed" << Phrases::EndFlush;
|
|
exit(-101);
|
|
}
|
|
}
|
|
|
|
/*!
|
|
* \brief Executes the application to be tested with the specified \a args and stores the standard output and
|
|
* errors in \a stdout and \a stderr.
|
|
* \throws Throws std::runtime_error when the application can not be executed.
|
|
* \remarks
|
|
* - The specified \a args must be 0 terminated. The first argument is the application name.
|
|
* - Currently only supported under UNIX.
|
|
* - \a stdout and \a stderr are cleared before.
|
|
*/
|
|
int TestApplication::execApp(const char *const *args, string &output, string &errors, bool suppressLogging, int timeout) const
|
|
{
|
|
// increase counter used for giving profiling files unique names
|
|
static unsigned int invocationCount = 0;
|
|
++invocationCount;
|
|
|
|
// determine the path of the application to be tested
|
|
const char *appPath = m_applicationPathArg.firstValue();
|
|
auto fallbackAppPath = string();
|
|
if (!appPath || !*appPath) {
|
|
// try to find the path by removing "_tests"-suffix from own executable path
|
|
// (the own executable path is the path of the test application and its name is usually the name of the application
|
|
// to be tested with "_tests"-suffix)
|
|
const char *const testAppPath = m_parser.executable();
|
|
const auto testAppPathLength = strlen(testAppPath);
|
|
if (testAppPathLength > 6 && !strcmp(testAppPath + testAppPathLength - 6, "_tests")) {
|
|
fallbackAppPath.assign(testAppPath, testAppPathLength - 6);
|
|
appPath = fallbackAppPath.data();
|
|
// TODO: it would not hurt to verify whether "fallbackAppPath" actually exists and is executalbe
|
|
} else {
|
|
throw runtime_error("Unable to execute application to be tested: no application path specified");
|
|
}
|
|
}
|
|
|
|
// determine new path for profiling output (to not override profiling output of parent and previous invocations)
|
|
const auto newProfilingPath = [appPath] {
|
|
auto path = string();
|
|
const char *const llvmProfileFile = getenv("LLVM_PROFILE_FILE");
|
|
if (!llvmProfileFile) {
|
|
return path;
|
|
}
|
|
// replace eg. "/some/path/tageditor_tests.profraw" with "/some/path/tageditor0.profraw"
|
|
const char *const llvmProfileFileEnd = strstr(llvmProfileFile, ".profraw");
|
|
if (!llvmProfileFileEnd) {
|
|
return path;
|
|
}
|
|
const auto llvmProfileFileWithoutExtension = string(llvmProfileFile, llvmProfileFileEnd);
|
|
// extract application name from path
|
|
const char *appName = strrchr(appPath, '/');
|
|
appName = appName ? appName + 1 : appPath;
|
|
// concat new path
|
|
path = argsToString(llvmProfileFileWithoutExtension, '_', appName, invocationCount, ".profraw");
|
|
// append path to profiling list file
|
|
if (const char *const profrawListFile = getenv("LLVM_PROFILE_LIST_FILE")) {
|
|
ofstream(profrawListFile, ios_base::app) << path << endl;
|
|
}
|
|
return path;
|
|
}();
|
|
|
|
return execAppInternal(appPath, args, output, errors, suppressLogging, timeout, newProfilingPath);
|
|
}
|
|
|
|
/*!
|
|
* \brief Executes an application with the specified \a args.
|
|
* \remarks
|
|
* - Intended to invoke helper applications (eg. to setup test files). Use execApp() and TestApplication::execApp() to
|
|
* invoke the application to be tested itself.
|
|
* - Currently only supported under UNIX.
|
|
*/
|
|
int execHelperApp(const char *appPath, const char *const *args, std::string &output, std::string &errors, bool suppressLogging, int timeout)
|
|
{
|
|
return execAppInternal(appPath, args, output, errors, suppressLogging, timeout, string());
|
|
}
|
|
|
|
/*!
|
|
* \brief Executes an application with the specified \a args.
|
|
*
|
|
* Searches for the location of \a appName among the directories specified by the PATH environment variable.
|
|
*
|
|
* \remarks
|
|
* - Intended to invoke helper applications (eg. to setup test files). Use execApp() and TestApplication::execApp() to
|
|
* invoke the application to be tested itself.
|
|
* - Currently only supported under UNIX.
|
|
*/
|
|
int execHelperAppInSearchPath(
|
|
const char *appName, const char *const *args, std::string &output, std::string &errors, bool suppressLogging, int timeout)
|
|
{
|
|
return execAppInternal(appName, args, output, errors, suppressLogging, timeout, string(), true);
|
|
}
|
|
#endif // PLATFORM_UNIX
|
|
|
|
/*!
|
|
* \brief Reads the path of the test file directory from the environment variable TEST_FILE_PATH.
|
|
*/
|
|
string TestApplication::readTestfilePathFromEnv()
|
|
{
|
|
const char *const testFilesPathEnv = getenv("TEST_FILE_PATH");
|
|
if (!testFilesPathEnv || !*testFilesPathEnv) {
|
|
return string();
|
|
}
|
|
return argsToString(testFilesPathEnv, '/');
|
|
}
|
|
|
|
/*!
|
|
* \brief Reads the path of the test file directory from the "srcdirref" file.
|
|
* \remarks That file is supposed to contain the path the the source directory. It is supposed to be stored by the build system in the
|
|
* same directory as the test executable. The CMake modules contained of these utilities ensure that's the case.
|
|
*/
|
|
string TestApplication::readTestfilePathFromSrcRef()
|
|
{
|
|
// find the path of the current executable on platforms supporting "/proc/self/exe"; otherwise assume the current working directory
|
|
// is the executable path
|
|
std::string binaryPath;
|
|
#if defined(CPP_UTILITIES_USE_STANDARD_FILESYSTEM) && defined(PLATFORM_UNIX)
|
|
try {
|
|
binaryPath = std::filesystem::read_symlink("/proc/self/exe").parent_path();
|
|
binaryPath += '/';
|
|
} catch (const std::filesystem::filesystem_error &e) {
|
|
cerr << Phrases::Warning << "Unable to detect binary path for finding \"srcdirref\": " << e.what() << Phrases::EndFlush;
|
|
}
|
|
#endif
|
|
try {
|
|
// read "srcdirref" file which should contain the path of the source directory
|
|
auto srcDirContent(readFile(binaryPath + "srcdirref", 2 * 1024));
|
|
if (srcDirContent.empty()) {
|
|
cerr << Phrases::Warning << "The file \"srcdirref\" is empty." << Phrases::EndFlush;
|
|
return string();
|
|
}
|
|
srcDirContent += "/testfiles/";
|
|
|
|
// check whether the referenced source directory contains a "testfiles" directory
|
|
if (!dirExists(srcDirContent)) {
|
|
cerr << Phrases::Warning
|
|
<< "The source directory referenced by the file \"srcdirref\" does not contain a \"testfiles\" directory or does not exist."
|
|
<< Phrases::End << "Referenced source directory: " << srcDirContent << endl;
|
|
return string();
|
|
}
|
|
return srcDirContent;
|
|
|
|
} catch (const std::ios_base::failure &) {
|
|
cerr << Phrases::Warning << "The file \"srcdirref\" can not be opened. It likely just doesn't exist in the working directory."
|
|
<< Phrases::EndFlush;
|
|
}
|
|
return string();
|
|
}
|
|
} // namespace CppUtilities
|