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Diffstat (limited to 'kernel/src/filesystem/dentry.tests.cpp')
| -rw-r--r-- | kernel/src/filesystem/dentry.tests.cpp | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/kernel/src/filesystem/dentry.tests.cpp b/kernel/src/filesystem/dentry.tests.cpp new file mode 100644 index 0000000..b7690f5 --- /dev/null +++ b/kernel/src/filesystem/dentry.tests.cpp @@ -0,0 +1,150 @@ +#include <kernel/filesystem/dentry.hpp> + +#include <kernel/test_support/cpu.hpp> +#include <kernel/test_support/filesystem/inode.hpp> + +#include <kstd/memory> +#include <kstd/print> + +#include <catch2/catch_test_macros.hpp> + +SCENARIO("Dentry construction", "[filesystem][dentry]") +{ + GIVEN("A parent dentry and inode") + { + auto inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto parent_dentry = kstd::make_shared<kernel::filesystem::dentry>(nullptr, inode, "parent"); + + WHEN("constructing a dentry") + { + auto child_dentry = kernel::filesystem::dentry{parent_dentry, inode, "child"}; + + THEN("the dentry has the correct parent, inode, and name") + { + REQUIRE(child_dentry.parent() == parent_dentry); + REQUIRE(child_dentry.get_inode() == inode); + REQUIRE(child_dentry.name() == "child"); + } + + THEN("no flag is set") + { + REQUIRE_FALSE(child_dentry.has_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point)); + } + } + + WHEN("constructing a dentry with an empty name") + { + THEN("the dentry has the correct parent and inode, and an empty name") + { + REQUIRE_THROWS_AS((kernel::filesystem::dentry{parent_dentry, inode, ""}), kernel::tests::cpu::halt); + } + } + + WHEN("constructing a dentry with a null parent") + { + auto child_dentry = kernel::filesystem::dentry{nullptr, inode, "child"}; + + THEN("the dentry has a null parent, the correct inode, and the correct name") + { + REQUIRE(child_dentry.parent() == nullptr); + REQUIRE(child_dentry.get_inode() == inode); + REQUIRE(child_dentry.name() == "child"); + } + + THEN("no flag is set") + { + REQUIRE_FALSE(child_dentry.has_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point)); + } + } + + WHEN("constructing a dentry with a null inode") + { + THEN("the system panics") + { + REQUIRE_THROWS_AS((kernel::filesystem::dentry{parent_dentry, nullptr, "child"}), kernel::tests::cpu::halt); + } + } + } +} + +SCENARIO("Dentry child logic", "[filesystem][dentry]") +{ + GIVEN("A parent dentry and inode") + { + auto inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto parent_dentry = kstd::make_shared<kernel::filesystem::dentry>(nullptr, inode, "parent"); + + WHEN("adding child dentries") + { + auto child1 = kstd::make_shared<kernel::filesystem::dentry>(parent_dentry, inode, "child1"); + auto child2 = kstd::make_shared<kernel::filesystem::dentry>(parent_dentry, inode, "child2"); + parent_dentry->add_child(child1); + parent_dentry->add_child(child2); + + THEN("the children can be found by name") + { + REQUIRE(parent_dentry->find_child("child1") == child1); + REQUIRE(parent_dentry->find_child("child2") == child2); + } + + THEN("finding a non-existent child returns null") + { + REQUIRE(parent_dentry->find_child("nonexistent") == nullptr); + } + } + } +} + +SCENARIO("Dentry Flag logic", "[filesystem][dentry]") +{ + GIVEN("A dentry") + { + auto inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto dentry = kernel::filesystem::dentry{nullptr, inode, "test"}; + + WHEN("setting a flag") + { + dentry.set_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point); + + THEN("the flag is set") + { + REQUIRE(dentry.has_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point)); + } + } + + WHEN("unsetting a flag") + { + dentry.set_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point); + dentry.unset_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point); + + THEN("the flag is unset") + { + REQUIRE_FALSE(dentry.has_flag(kernel::filesystem::dentry::dentry_flags::is_mount_point)); + } + } + } +} + +SCENARIO("Dentry path resolution", "[filesystem][dentry]") +{ + GIVEN("A dentry with a parent hierarchy") + { + auto root_inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto root_dentry = kstd::make_shared<kernel::filesystem::dentry>(nullptr, root_inode, "/"); + + auto home_inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto home_dentry = kstd::make_shared<kernel::filesystem::dentry>(root_dentry, home_inode, "home"); + root_dentry->add_child(home_dentry); + + auto user_inode = kstd::make_shared<kernel::tests::filesystem::inode>(); + auto user_dentry = kstd::make_shared<kernel::filesystem::dentry>(home_dentry, user_inode, "user"); + home_dentry->add_child(user_dentry); + + THEN("the full path is constructed correctly") + { + REQUIRE(root_dentry->absolute_path() == "/"); + REQUIRE(home_dentry->absolute_path() == "/home"); + REQUIRE(user_dentry->absolute_path() == "/home/user"); + } + } +}
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