new file mode 100644
@@ -0,0 +1,293 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * file.cpp - File I/O operations tests
+ */
+
+#include <fstream>
+#include <iostream>
+#include <stdlib.h>
+#include <string>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "file.h"
+#include "test.h"
+
+using namespace std;
+using namespace libcamera;
+
+class FileTest : public Test
+{
+protected:
+ int init()
+ {
+ fileName_ = "/tmp/libcamera.test.XXXXXX";
+ int fd = mkstemp(&fileName_.front());
+ if (fd == -1)
+ return TestFail;
+
+ write(fd, "libcamera", 9);
+ close(fd);
+
+ return TestPass;
+ }
+
+ int run()
+ {
+ /* Test static functions. */
+ if (!File::exists("/dev/null")) {
+ cerr << "Valid file not found" << endl;
+ return TestFail;
+ }
+
+ if (File::exists("/dev/null/invalid")) {
+ cerr << "Invalid file should not exist" << endl;
+ return TestFail;
+ }
+
+ /* Test unnamed file. */
+ File file;
+
+ if (!file.fileName().empty()) {
+ cerr << "Unnamed file has non-empty file name" << endl;
+ return TestFail;
+ }
+
+ if (file.exists()) {
+ cerr << "Unnamed file exists" << endl;
+ return TestFail;
+ }
+
+ if (file.isOpen()) {
+ cerr << "File is open after construction" << endl;
+ return TestFail;
+ }
+
+ if (file.openMode() != File::NotOpen) {
+ cerr << "File has invalid open mode after construction"
+ << endl;
+ return TestFail;
+ }
+
+ if (file.size() >= 0) {
+ cerr << "Unnamed file has a size" << endl;
+ return TestFail;
+ }
+
+ if (file.open(File::ReadWrite)) {
+ cerr << "Opening unnamed file succeeded" << endl;
+ return TestFail;
+ }
+
+ if (file.error() == 0) {
+ cerr << "Open failure didn't set error" << endl;
+ return TestFail;
+ }
+
+ /* Test named file referring to an invalid file. */
+ file.setFileName("/dev/null/invalid");
+
+ if (file.fileName() != "/dev/null/invalid") {
+ cerr << "File reports incorrect file name" << endl;
+ return TestFail;
+ }
+
+ if (file.exists()) {
+ cerr << "Invalid file exists" << endl;
+ return TestFail;
+ }
+
+ if (file.isOpen()) {
+ cerr << "Invalid file is open after construction" << endl;
+ return TestFail;
+ }
+
+ if (file.openMode() != File::NotOpen) {
+ cerr << "Invalid file has invalid open mode after construction"
+ << endl;
+ return TestFail;
+ }
+
+ if (file.size() >= 0) {
+ cerr << "Invalid file has a size" << endl;
+ return TestFail;
+ }
+
+ if (file.open(File::ReadWrite)) {
+ cerr << "Opening invalid file succeeded" << endl;
+ return TestFail;
+ }
+
+ /* Test named file referring to a valid file. */
+ file.setFileName("/dev/null");
+
+ if (!file.exists()) {
+ cerr << "Valid file does not exist" << endl;
+ return TestFail;
+ }
+
+ if (file.isOpen()) {
+ cerr << "Valid file is open after construction" << endl;
+ return TestFail;
+ }
+
+ if (file.openMode() != File::NotOpen) {
+ cerr << "Valid file has invalid open mode after construction"
+ << endl;
+ return TestFail;
+ }
+
+ if (file.size() >= 0) {
+ cerr << "Invalid file has a size" << endl;
+ return TestFail;
+ }
+
+ /* Test open and close. */
+ if (!file.open(File::ReadWrite)) {
+ cerr << "Opening file failed" << endl;
+ return TestFail;
+ }
+
+ if (!file.isOpen()) {
+ cerr << "Open file reported as closed" << endl;
+ return TestFail;
+ }
+
+ if (file.openMode() != File::ReadWrite) {
+ cerr << "Open file has invalid open mode" << endl;
+ return TestFail;
+ }
+
+ file.close();
+
+ if (file.isOpen()) {
+ cerr << "Closed file reported as open" << endl;
+ return TestFail;
+ }
+
+ if (file.openMode() != File::NotOpen) {
+ cerr << "Closed file has invalid open mode" << endl;
+ return TestFail;
+ }
+
+ /* Test size(). */
+ file.setFileName("/proc/self/exe");
+
+ if (file.size() >= 0) {
+ cerr << "File has valid size before open" << endl;
+ return TestFail;
+ }
+
+ file.open(File::ReadOnly);
+
+ ssize_t size = file.size();
+ if (size <= 0) {
+ cerr << "File has invalid size after open" << endl;
+ return TestFail;
+ }
+
+ /* Test mapping and unmapping. */
+ Span<uint8_t> data = file.map();
+ if (data.empty()) {
+ cerr << "Mapping of complete file failed" << endl;
+ return TestFail;
+ }
+
+ if (data.size() != static_cast<size_t>(size)) {
+ cerr << "Mapping of complete file has invalid size" << endl;
+ return TestFail;
+ }
+
+ if (!file.unmap(data.data())) {
+ cerr << "Unmapping of complete file failed" << endl;
+ return TestFail;
+ }
+
+ data = file.map(4096, 8192);
+ if (data.empty()) {
+ cerr << "Mapping of file region failed" << endl;
+ return TestFail;
+ }
+
+ if (data.size() != 8192) {
+ cerr << "Mapping of file region has invalid size" << endl;
+ return TestFail;
+ }
+
+ if (!file.unmap(data.data())) {
+ cerr << "Unmapping of file region failed" << endl;
+ return TestFail;
+ }
+
+ file.close();
+
+ /* Test private mapping. */
+ file.setFileName(fileName_);
+ file.open(File::ReadWrite);
+
+ data = file.map(0, -1, File::MapPrivate);
+ if (data.empty()) {
+ cerr << "Private mapping failed" << endl;
+ return TestFail;
+ }
+
+ std::string str{ reinterpret_cast<char *>(data.data()), data.size() };
+ if (str != "libcamera") {
+ cerr << "Invalid contents of private mapping" << endl;
+ return TestFail;
+ }
+
+ memcpy(data.data(), "LIBCAMERA", 9);
+
+ if (!file.unmap(data.data())) {
+ cerr << "Private unmapping failed" << endl;
+ return TestFail;
+ }
+
+ data = file.map();
+
+ str = { reinterpret_cast<char *>(data.data()), data.size() };
+ if (str != "libcamera") {
+ cerr << "Private mapping changed file contents" << endl;
+ return TestFail;
+ }
+
+ /* Test shared mapping. */
+ data = file.map();
+ if (data.empty()) {
+ cerr << "Shared mapping failed" << endl;
+ return TestFail;
+ }
+
+ memcpy(data.data(), "LIBCAMERA", 9);
+
+ if (!file.unmap(data.data())) {
+ cerr << "Shared unmapping failed" << endl;
+ return TestFail;
+ }
+
+ data = file.map();
+
+ str = { reinterpret_cast<char *>(data.data()), data.size() };
+ if (str != "LIBCAMERA") {
+ cerr << "Shared mapping failed to change file contents"
+ << endl;
+ return TestFail;
+ }
+
+ return TestPass;
+ }
+
+ void cleanup()
+ {
+ unlink(fileName_.c_str());
+ }
+
+private:
+ std::string fileName_;
+};
+
+TEST_REGISTER(FileTest)
@@ -26,6 +26,7 @@ internal_tests = [
['event', 'event.cpp'],
['event-dispatcher', 'event-dispatcher.cpp'],
['event-thread', 'event-thread.cpp'],
+ ['file', 'file.cpp'],
['file-descriptor', 'file-descriptor.cpp'],
['message', 'message.cpp'],
['object', 'object.cpp'],