[WasmFS] Enable NODEFS tests on WasmFS (#23482)

We had various tests disabled from before we had NODEFS support in
WasmFS.

test/test_core.py

@@ -5853,14 +5853,11 @@ def test_fs_stat_unnamed_file_descriptor(self):
   @crossplatform
   @with_all_fs
   def test_fs_symlink_resolution(self):
-    nodefs = '-DNODEFS' in self.emcc_args or '-DNODERAWFS' in self.emcc_args
     if self.get_setting('WASMFS'):
       self.set_setting('FORCE_FILESYSTEM')
-    if nodefs:
-      if WINDOWS:
-        self.skipTest('No symlinks on Windows')
-      if self.get_setting('WASMFS'):
-        self.skipTest('NODEFS in WasmFS')
+    nodefs = '-DNODEFS' in self.emcc_args or '-DNODERAWFS' in self.emcc_args
+    if nodefs and WINDOWS:
+      self.skipTest('No symlinks on Windows')
     self.do_runf('fs/test_fs_symlink_resolution.c', 'success')
 
   @with_all_fs
@@ -5907,11 +5904,8 @@ def test_sigaction_default(self, signal, exit_code, assert_identical):
   @crossplatform
   @with_all_fs
   def test_unistd_access(self):
-    nodefs = '-DNODEFS' in self.emcc_args or '-DNODERAWFS' in self.emcc_args
     if self.get_setting('WASMFS'):
       self.set_setting('FORCE_FILESYSTEM')
-      if nodefs:
-        self.skipTest('NODEFS in WasmFS')
     # On windows we have slighly different output because we the same
     # level of permissions are not available. For example, on windows
     # its not possible have a file that is not readable, but writable.
@@ -5946,11 +5940,8 @@ def test_unistd_dup(self):
 
   @with_all_fs
   def test_unistd_truncate(self):
-    nodefs = '-DNODEFS' in self.emcc_args or '-DNODERAWFS' in self.emcc_args
     if self.get_setting('WASMFS'):
       self.set_setting('FORCE_FILESYSTEM')
-      if nodefs:
-        self.skipTest('TODO: NODEFS in WasmFS')
     if WINDOWS or os.geteuid() == 0:
       self.skipTest('Root access invalidates this test by being able to write on readonly files')
     self.do_run_in_out_file_test('unistd/truncate.c')
@@ -5982,10 +5973,6 @@ def test_unistd_sysconf_phys_pages(self):
   @no_windows('https://github.com/emscripten-core/emscripten/issues/8882')
   @with_all_fs
   def test_unistd_unlink(self):
-    nodefs = '-DNODEFS' in self.emcc_args or '-DNODERAWFS' in self.emcc_args
-    if self.get_setting('WASMFS') and nodefs:
-      self.skipTest('NODEFS in WasmFS')
-
     # symlinks on node.js on non-linux behave differently (e.g. on Windows they require administrative privileges)
     # so skip testing those bits on that combination.
     if '-DNODEFS' in self.emcc_args:
@@ -6035,8 +6022,6 @@ def test_unistd_symlink_on_nodefs(self):
   @also_with_nodefs
   def test_unistd_io(self):
     if self.get_setting('WASMFS'):
-      if '-DNODEFS' in self.emcc_args:
-        self.skipTest('NODEFS in WasmFS')
       self.set_setting('FORCE_FILESYSTEM')
     self.do_run_in_out_file_test('unistd/io.c')