diff options
Diffstat (limited to 'test/test_dcache.cc')
| -rw-r--r-- | test/test_dcache.cc | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/test/test_dcache.cc b/test/test_dcache.cc deleted file mode 100644 index 9e0eec5..0000000 --- a/test/test_dcache.cc +++ /dev/null @@ -1,232 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* Copyright (C) 2026 Richard Qin */ - -/* - * test_dcache.cc — Self-tests for the dentry cache layer - */ - -#include <lume/selftest.h> -#include <lume/dcache.h> -#include <lume/fs.h> -#include <lume/mount.h> -#include <lume/errno.h> -#include <lume/slab.h> - -/* Root dentry/mount from VFS init */ -extern dentry* g_root_dentry; -extern vfsmount* g_root_mnt; - -void selftest_dcache() -{ - /* ---- d_alloc: basic allocation under root ---- */ - st_begin("dcache: d_alloc basic"); - { - qstr name{}; - name.name = "test_child"; - name.len = 10; - name.hash = full_name_hash(name.name, name.len); - - dentry* child = d_alloc(g_root_dentry, &name); - ST_ASSERT(child != nullptr); - ST_ASSERT_EQ(child->d_name.len, 10u); - ST_ASSERT(child->d_parent == g_root_dentry); - ST_ASSERT(child->d_inode == nullptr); /* not instantiated yet */ - ST_ASSERT(child->d_sb == g_root_dentry->d_sb); - - /* Name was copied into inline buffer */ - bool match = true; - for (uint32 i = 0; i < name.len; i++) { - if (child->d_name.name[i] != name.name[i]) { match = false; break; } - } - ST_ASSERT(match); - - d_drop(child); - dput(child); - } - st_pass(); - - /* ---- d_lookup: find existing child ---- */ - st_begin("dcache: d_lookup finds child"); - { - qstr name{}; - name.name = "lookup_me"; - name.len = 9; - name.hash = full_name_hash(name.name, name.len); - - dentry* child = d_alloc(g_root_dentry, &name); - ST_ASSERT(child != nullptr); - - /* d_lookup should find it */ - dentry* found = d_lookup(g_root_dentry, &name); - ST_ASSERT(found != nullptr); - ST_ASSERT(found == child); - dput(found); /* drop d_lookup ref */ - - d_drop(child); - dput(child); - } - st_pass(); - - /* ---- d_lookup: miss returns nullptr ---- */ - st_begin("dcache: d_lookup miss returns nullptr"); - { - qstr name{}; - name.name = "nonexistent_xyz"; - name.len = 15; - name.hash = full_name_hash(name.name, name.len); - - dentry* found = d_lookup(g_root_dentry, &name); - ST_ASSERT(found == nullptr); - } - st_pass(); - - /* ---- d_instantiate: bind inode to dentry ---- */ - st_begin("dcache: d_instantiate binds inode"); - { - qstr name{}; - name.name = "has_inode"; - name.len = 9; - name.hash = full_name_hash(name.name, name.len); - - dentry* child = d_alloc(g_root_dentry, &name); - ST_ASSERT(child != nullptr); - ST_ASSERT(child->d_inode == nullptr); - - /* Create a dummy inode */ - inode* ip = new_inode(g_root_dentry->d_sb); - ST_ASSERT(ip != nullptr); - ip->i_mode = S_IFREG | 0644; - - d_instantiate(child, ip); - ST_ASSERT(child->d_inode == ip); - ST_ASSERT(child->d_flags & DCACHE_REGULAR_TYPE); - - d_drop(child); - dput(child); - } - st_pass(); - - /* ---- dget/dput: refcount ---- */ - st_begin("dcache: dget/dput refcount"); - { - qstr name{}; - name.name = "reftest"; - name.len = 7; - name.hash = full_name_hash(name.name, name.len); - - dentry* child = d_alloc(g_root_dentry, &name); - ST_ASSERT(child != nullptr); - /* d_alloc sets refcount = 1 */ - int rc1 = child->d_lockref.load(); - ST_ASSERT(rc1 >= 1); - - dget(child); - int rc2 = child->d_lockref.load(); - ST_ASSERT_EQ(rc2, rc1 + 1); - - dput(child); - int rc3 = child->d_lockref.load(); - ST_ASSERT_EQ(rc3, rc1); - - d_drop(child); - dput(child); - } - st_pass(); - - /* ---- d_drop: removes from parent children list ---- */ - st_begin("dcache: d_drop removes from parent"); - { - qstr name{}; - name.name = "dropme"; - name.len = 6; - name.hash = full_name_hash(name.name, name.len); - - dentry* child = d_alloc(g_root_dentry, &name); - ST_ASSERT(child != nullptr); - - /* Should be findable */ - dentry* f1 = d_lookup(g_root_dentry, &name); - ST_ASSERT(f1 != nullptr); - dput(f1); - - /* Drop it */ - d_drop(child); - - /* Should no longer be findable */ - dentry* f2 = d_lookup(g_root_dentry, &name); - ST_ASSERT(f2 == nullptr); - - dput(child); - } - st_pass(); - - /* ---- d_path: root returns "/" ---- */ - st_begin("dcache: d_path root returns /"); - { - path p{}; - p.de = g_root_dentry; - p.mnt = g_root_mnt; - - char buf[64]; - char* result = d_path(&p, buf, sizeof(buf)); - ST_ASSERT(result != nullptr); - ST_ASSERT(result[0] == '/'); - ST_ASSERT(result[1] == '\0'); - } - st_pass(); - - /* ---- d_path: child path ---- */ - st_begin("dcache: d_path child returns /name"); - { - qstr name{}; - name.name = "pathtest"; - name.len = 8; - name.hash = full_name_hash(name.name, name.len); - - dentry* child = d_alloc(g_root_dentry, &name); - ST_ASSERT(child != nullptr); - - path p{}; - p.de = child; - p.mnt = g_root_mnt; - - char buf[64]; - char* result = d_path(&p, buf, sizeof(buf)); - ST_ASSERT(result != nullptr); - - /* Should be "/pathtest" */ - const char* expected = "/pathtest"; - bool eq = true; - for (int i = 0; expected[i]; i++) { - if (result[i] != expected[i]) { eq = false; break; } - } - ST_ASSERT(eq); - - d_drop(child); - dput(child); - } - st_pass(); - - /* ---- d_alloc_anon: root-like dentry ---- */ - st_begin("dcache: d_alloc_anon"); - { - dentry* anon = d_alloc_anon(g_root_dentry->d_sb); - ST_ASSERT(anon != nullptr); - ST_ASSERT(anon->d_parent == anon); /* root: parent is self */ - ST_ASSERT(anon->d_sb == g_root_dentry->d_sb); - dput(anon); - } - st_pass(); - - /* ---- full_name_hash: deterministic ---- */ - st_begin("dcache: full_name_hash deterministic"); - { - uint32 h1 = full_name_hash("hello", 5); - uint32 h2 = full_name_hash("hello", 5); - ST_ASSERT_EQ(h1, h2); - - uint32 h3 = full_name_hash("world", 5); - ST_ASSERT_NE(h1, h3); - } - st_pass(); -} |