diff options
Diffstat (limited to 'kernel/src/filesystem/file_descriptor_table.tests.cpp')
| -rw-r--r-- | kernel/src/filesystem/file_descriptor_table.tests.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/kernel/src/filesystem/file_descriptor_table.tests.cpp b/kernel/src/filesystem/file_descriptor_table.tests.cpp new file mode 100644 index 0000000..5aeadb2 --- /dev/null +++ b/kernel/src/filesystem/file_descriptor_table.tests.cpp @@ -0,0 +1,113 @@ +#include "kernel/filesystem/file_descriptor_table.hpp" + +#include "kernel/filesystem/open_file_description.hpp" +#include "kernel/test_support/filesystem/inode.hpp" + +#include <kstd/memory> +#include <kstd/print> +#include <kstd/vector> + +#include <catch2/catch_test_macros.hpp> + +SCENARIO("File descriptor table add/get file", "[filesystem][file_descriptor_table]") +{ + GIVEN("a file descriptor table and an open file description") + { + auto & table = kernel::filesystem::file_descriptor_table::get(); + auto inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto file_description_1 = kstd::make_shared<kernel::filesystem::open_file_description>(inode); + auto file_description_2 = kstd::make_shared<kernel::filesystem::open_file_description>(inode); + + WHEN("adding the open file description to the file descriptor table") + { + auto fd_1 = table.add_file(file_description_1); + auto fd_2 = table.add_file(file_description_2); + auto fd_3 = table.add_file(file_description_2); + + THEN("a valid file descriptor is returned") + { + REQUIRE(fd_1 == 0); + REQUIRE(fd_2 == 1); + REQUIRE(fd_3 == 2); + } + + THEN("the file description can be retrieved using the returned file descriptor") + { + auto retrieved_description = table.get_file(fd_1); + REQUIRE(retrieved_description == file_description_1); + } + } + } + + GIVEN("a invalid open file description") + { + auto & table = kernel::filesystem::file_descriptor_table::get(); + + THEN("adding a null file description returns an error code") + { + auto fd = table.add_file(nullptr); + REQUIRE(fd == -1); + } + + THEN("retrieving a file description with a negative file descriptor returns a null pointer") + { + auto retrieved_description = table.get_file(-1); + REQUIRE(retrieved_description == nullptr); + } + + THEN("retrieving a file description with an out-of-bounds file descriptor returns a null pointer") + { + auto retrieved_description = table.get_file(1000); + REQUIRE(retrieved_description == nullptr); + } + } +} + +SCENARIO("File descriptor table remove file", "[filesystem][file_descriptor_table]") +{ + GIVEN("a file descriptor table with an open file description") + { + auto & table = kernel::filesystem::file_descriptor_table::get(); + auto inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto file_description = kstd::make_shared<kernel::filesystem::open_file_description>(inode); + auto fd = table.add_file(file_description); + + WHEN("removing the file description using the file descriptor") + { + table.remove_file(fd); + + THEN("the file description can no longer be retrieved using the file descriptor") + { + auto retrieved_description = table.get_file(fd); + REQUIRE(retrieved_description == nullptr); + } + } + + WHEN("removing a file description the other file descriptor keep the same index") + { + auto fd2 = table.add_file(file_description); + table.remove_file(fd); + + THEN("the second file description can still be retrieved using its file descriptor") + { + auto retrieved_description = table.get_file(fd2); + REQUIRE(retrieved_description == file_description); + } + } + } + + GIVEN("an invalid file descriptor") + { + auto & table = kernel::filesystem::file_descriptor_table::get(); + + THEN("removing a file with a negative file descriptor does nothing") + { + REQUIRE_NOTHROW(table.remove_file(-1)); + } + + THEN("removing a file with an out-of-bounds file descriptor does nothing") + { + REQUIRE_NOTHROW(table.remove_file(1000)); + } + } +}
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