martinzink commented on a change in pull request #987:
URL: https://github.com/apache/nifi-minifi-cpp/pull/987#discussion_r570177419
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File path: libminifi/test/unit/FileStreamTests.cpp
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@@ -263,3 +267,75 @@ TEST_CASE("Read zero bytes") {
minifi::io::FileStream stream(utils::file::concat_path(dir, "test.txt"), 0,
true);
REQUIRE(stream.read(nullptr, 0) == 0);
}
+
+TEST_CASE("Non-existing file read/write test") {
+ TestController test_controller;
+ char format[] = "/tmp/gt.XXXXXX";
+ auto dir = test_controller.createTempDirectory(format);
+ minifi::io::FileStream stream(utils::file::concat_path(dir,
"non_existing_file.txt"), 0, true);
+ REQUIRE(test_controller.getLog().getInstance().contains("Error opening
file", std::chrono::seconds(0)));
+ REQUIRE(test_controller.getLog().getInstance().contains("No such file or
directory", std::chrono::seconds(0)));
+ REQUIRE(stream.write("lorem ipsum", false) == -1);
+ REQUIRE(test_controller.getLog().getInstance().contains("Error writing to
file: invalid file stream", std::chrono::seconds(0)));
+ std::vector<uint8_t> readBuffer;
+ stream.seek(0);
+ REQUIRE(stream.read(readBuffer, 1) == -1);
+ REQUIRE(test_controller.getLog().getInstance().contains("Error reading from
file: invalid file stream", std::chrono::seconds(0)));
+}
+
+TEST_CASE("Existing file read/write test") {
+ TestController test_controller;
+ char format[] = "/tmp/gt.XXXXXX";
+ auto dir = test_controller.createTempDirectory(format);
+ std::string path_to_existing_file(utils::file::concat_path(dir,
"existing_file.txt"));
+ {
+ std::ofstream outfile(path_to_existing_file);
+ outfile << "lorem ipsum" << std::endl;
+ outfile.close();
+ }
+ minifi::io::FileStream stream(path_to_existing_file, 0, true);
+ REQUIRE_FALSE(test_controller.getLog().getInstance().contains("Error opening
file", std::chrono::seconds(0)));
+ REQUIRE_FALSE(stream.write("dolor sit amet", false) == -1);
+ REQUIRE_FALSE(test_controller.getLog().getInstance().contains("Error writing
to file", std::chrono::seconds(0)));
+ std::vector<uint8_t> readBuffer;
+ stream.seek(0);
+ REQUIRE_FALSE(stream.read(readBuffer, 11) == -1);
+ REQUIRE_FALSE(test_controller.getLog().getInstance().contains("Error reading
from file", std::chrono::seconds(0)));
+ stream.seek(0);
+ REQUIRE(stream.read(nullptr, 11) == -1);
+ REQUIRE(test_controller.getLog().getInstance().contains("Error reading from
file: invalid buffer", std::chrono::seconds(0)));
+}
+
+#ifdef USE_BOOST
+TEST_CASE("Opening file without permission creates error logs") {
+ TestController test_controller;
+ char format[] = "/tmp/gt.XXXXXX";
+ auto dir = test_controller.createTempDirectory(format);
+ std::string path_to_permissionless_file(utils::file::concat_path(dir,
"permissionless_file.txt"));
+ {
+ std::ofstream outfile(path_to_permissionless_file);
+ outfile << "this file has been just created" << std::endl;
+ outfile.close();
+ // This could be done with C++17 std::filesystem
+ boost::filesystem::permissions(path_to_permissionless_file,
boost::filesystem::no_perms);
Review comment:
I feel like its useful to run this on windows as well (if there is boost
support), because it verifies that the error messages provided by strerror()
are the same on all platforms. (I wasn't sure about it previously given how
differently windows and unix handles file permissions).
Maybe we should do both, if there is boost use this if not and we are not on
windows use the FileUtils one (which would then use chmod)?
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