Function FL_TEST_FILE

tests/fl/stl/detail/file_handle.cpp:6–192

#include "platforms/stub/fs_stub.hpp"

FL_TEST_FILE(FL_FILEPATH) {

// RAII guard for test files
class FilebufTestGuard {
    fl::string mDir;
public:
    explicit FilebufTestGuard(const char* dir) : mDir(dir) {
        fl::StubFileSystem::forceRemoveDirectory(mDir);
        fl::StubFileSystem::createDirectory(mDir);
    }
    ~FilebufTestGuard() {
        fl::StubFileSystem::forceRemoveDirectory(mDir);
    }
    fl::string filePath(const char* name) const {
        fl::string p = mDir;
        p.append("/");
        p.append(name);
        return p;
    }
};

FL_TEST_CASE("posix_filebuf::size() returns correct file size") {
    FilebufTestGuard guard("test_fh_size");
    fl::string path = guard.filePath("test.bin");
    fl::StubFileSystem::createTextFile(path, "0123456789");

    fl::detail::posix_filebuf fh(path.c_str(), "rb");
    FL_REQUIRE(fh.is_open());
    FL_CHECK_EQ(fh.size(), 10);
}

FL_TEST_CASE("posix_filebuf::path() returns path passed to constructor") {
    FilebufTestGuard guard("test_fh_path");
    fl::string path = guard.filePath("hello.txt");
    fl::StubFileSystem::createTextFile(path, "hi");

    fl::detail::posix_filebuf fh(path.c_str(), "rb");
    FL_REQUIRE(fh.is_open());
    FL_CHECK_EQ(fl::string(fh.path()), path);
}

FL_TEST_CASE("filebuf::available() default implementation") {
    FilebufTestGuard guard("test_fh_avail");
    fl::string path = guard.filePath("data.txt");
    fl::StubFileSystem::createTextFile(path, "abcd");

    fl::detail::posix_filebuf fh(path.c_str(), "rb");
    FL_REQUIRE(fh.is_open());
    FL_CHECK(fh.available());

    // Read all data to trigger EOF
    char buf[10];
    fh.read(buf, 10);
    FL_CHECK(!fh.available()); // EOF reached
}

FL_TEST_CASE("filebuf::bytes_left() tracks correctly") {
    FilebufTestGuard guard("test_fh_bytes_left");