[unit test] Complete FUSE unit tests #22

repertory/repertory_test/src/fuse_drive_unlink_test.cpp

@@ -0,0 +1,113 @@
+/*
+  Copyright <2018-2025> <scott.e.graves@protonmail.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+*/
+#if !defined(_WIN32)
+
+#include "fixtures/drive_fixture.hpp"
+
+namespace repertory {
+TYPED_TEST_SUITE(fuse_test, platform_provider_types);
+
+TYPED_TEST(fuse_test, unlink_can_remove_file) {
+  std::string name{"unlink"};
+  auto path = this->create_file_and_test(name);
+
+  this->unlink_file_and_test(path);
+
+  struct stat st{};
+  EXPECT_EQ(-1, ::stat(path.c_str(), &st));
+  EXPECT_EQ(ENOENT, errno);
+}
+
+TYPED_TEST(fuse_test, unlink_open_file_leaves_handle_intact) {
+  std::string name{"unlink"};
+  auto path = this->create_file_and_test(name, 0644);
+
+  {
+    auto desc = ::open(path.c_str(), O_WRONLY);
+    ASSERT_NE(desc, -1);
+    this->write_all(desc, "HELLO");
+    ::close(desc);
+  }
+
+  auto desc = ::open(path.c_str(), O_RDWR);
+  ASSERT_NE(desc, -1);
+
+  ASSERT_EQ(0, ::unlink(path.c_str()));
+
+  ASSERT_NE(-1, ::lseek(desc, 0, SEEK_END));
+  this->write_all(desc, " WORLD");
+
+  ASSERT_NE(-1, ::lseek(desc, 0, SEEK_SET));
+  std::string out;
+  char buf[4096];
+  for (;;) {
+    ssize_t r = ::read(desc, buf, sizeof(buf));
+    ASSERT_NE(r, -1);
+    if (r == 0)
+      break;
+    out.append(buf, buf + r);
+  }
+  ::close(desc);
+
+  EXPECT_EQ("HELLO WORLD", out);
+}
+
+TYPED_TEST(fuse_test, unlink_fails_if_file_is_not_found) {
+  std::string name{"unlink"};
+  auto missing = this->create_file_path(name);
+
+  errno = 0;
+  EXPECT_EQ(-1, ::unlink(missing.c_str()));
+  EXPECT_EQ(ENOENT, errno);
+}
+
+TYPED_TEST(fuse_test, unlink_directory_fails) {
+  std::string name{"unlink"};
+  auto dir = this->create_directory_and_test(name);
+
+  errno = 0;
+  EXPECT_EQ(-1, ::unlink(dir.c_str()));
+  EXPECT_EQ(EISDIR, errno);
+
+  this->rmdir_and_test(dir);
+}
+
+// TODO revisit
+// TYPED_TEST(fuse_test, unlink_on_readonly_mount_erofs_or_skip) {
+//   std::string name{"unlink"};
+//   auto path = this->create_file_path(name);
+//
+//   auto desc = ::open(path.c_str(), O_CREAT | O_WRONLY, 0644);
+//   if (desc == -1) {
+//     if (errno == EROFS) {
+//       GTEST_SKIP(); unlink would return EROFS";
+//     }
+//     FAIL();
+//   }
+//   ::close(desc);
+//
+//   ASSERT_EQ(0, ::unlink(path.c_str()));
+//   GTEST_SKIP(); RO-specific unlink test skipped";
+// }
+} // namespace repertory
+
+#endif // !defined(_WIN32)