feat: stdpath('run'), /tmp/nvim.user/ #18993

Problem:
- Since c57f6b28d71d #8519, sockets are created in ~/.local/… but XDG
  spec says: "XDG_RUNTIME_DIR: Must be on the local filesystem", which
  implies that XDG_STATE_DIR is potentially non-local.
- Not easy to inspect Nvim-created temp files (for debugging etc).

Solution:
- Store sockets in stdpath('run') ($XDG_RUNTIME_DIR).
- Establish "/tmp/nvim.user/" as the tempdir root shared by all Nvims.
- Make ok() actually useful.
- Introduce assert_nolog().

closes #3517
closes #17093

3 files changed, 11 insertions, 15 deletions

diff --git a/test/unit/os/env_spec.lua b/test/unit/os/env_spec.lua
index c039b95d16..71177f4c65 100644
--- a/test/unit/os/env_spec.lua
+++ b/test/unit/os/env_spec.lua
@@ -266,7 +266,7 @@ describe('env.c', function()
 
     itp('does not crash #3725', function()
       local name_out = ffi.new('char[100]')
-      cimp.os_get_user_name(name_out, 100)
+      cimp.os_get_username(name_out, 100)
       local curuser = ffi.string(name_out)
 
       local src = to_cstr("~"..curuser.."/Vcs/django-rest-framework/rest_framework/renderers.py")
diff --git a/test/unit/os/users_spec.lua b/test/unit/os/users_spec.lua
index f92413c7de..679e76fae1 100644
--- a/test/unit/os/users_spec.lua
+++ b/test/unit/os/users_spec.lua
@@ -48,10 +48,10 @@ describe('users function', function()
     end)
   end)
 
-  describe('os_get_user_name', function()
+  describe('os_get_username', function()
     itp('should write the username into the buffer and return OK', function()
       local name_out = ffi.new('char[100]')
-      eq(OK, users.os_get_user_name(name_out, 100))
+      eq(OK, users.os_get_username(name_out, 100))
       eq(current_username, ffi.string(name_out))
     end)
   end)
@@ -73,18 +73,18 @@ describe('users function', function()
     end)
   end)
 
-  describe('os_get_user_directory', function()
+  describe('os_get_userdir', function()
     itp('should return NULL if called with NULL', function()
-      eq(NULL, users.os_get_user_directory(NULL))
+      eq(NULL, users.os_get_userdir(NULL))
     end)
 
     itp('should return $HOME for the current user', function()
       local home = os.getenv('HOME')
-      eq(home, ffi.string((users.os_get_user_directory(current_username))))
+      eq(home, ffi.string((users.os_get_userdir(current_username))))
     end)
 
     itp('should return NULL if the user is not found', function()
-      eq(NULL, users.os_get_user_directory('neovim_user_not_found_test'))
+      eq(NULL, users.os_get_userdir('neovim_user_not_found_test'))
     end)
   end)
 end)
diff --git a/test/unit/tempfile_spec.lua b/test/unit/tempfile_spec.lua
index c05abfd640..44bd19c1d2 100644
--- a/test/unit/tempfile_spec.lua
+++ b/test/unit/tempfile_spec.lua
@@ -24,7 +24,7 @@ describe('tempfile related functions', function()
   end
 
   describe('vim_gettempdir', function()
-    itp('returns path to Neovim own temp directory', function()
+    itp('returns path to Nvim own temp directory', function()
       local dir = vim_gettempdir()
       assert.True(dir ~= nil and dir:len() > 0)
       -- os_file_is_writable returns 2 for a directory which we have rights
@@ -36,9 +36,7 @@ describe('tempfile related functions', function()
     end)
 
     itp('returns the same directory on each call', function()
-      local dir1 = vim_gettempdir()
-      local dir2 = vim_gettempdir()
-      eq(dir1, dir2)
+      eq(vim_gettempdir(), vim_gettempdir())
     end)
   end)
 
@@ -54,12 +52,10 @@ describe('tempfile related functions', function()
     end)
 
     itp('generate different names on each call', function()
-      local fst = vim_tempname()
-      local snd = vim_tempname()
-      neq(fst, snd)
+      neq(vim_tempname(), vim_tempname())
     end)
 
-    itp('generate file name in Neovim own temp directory', function()
+    itp('generate file name in Nvim own temp directory', function()
       local dir = vim_gettempdir()
       local file = vim_tempname()
       eq(string.sub(file, 1, string.len(dir)), dir)