refactored logic from init_users() into mch_get_usernames()

1 files changed, 52 insertions, 0 deletions

diff --git a/test/unit/os/users.moon b/test/unit/os/users.moon
new file mode 100644
index 0000000000..366407d5c8
--- /dev/null
+++ b/test/unit/os/users.moon
@@ -0,0 +1,52 @@
+{:cimport, :internalize, :eq, :ffi, :lib, :cstr} = require 'test.unit.helpers'
+
+-- fs = cimport './src/os/os.h'
+-- remove these statements once 'cimport' is working properly for misc1.h
+users = lib
+ffi.cdef [[
+typedef struct growarray {
+  int ga_len;
+  int ga_maxlen;
+  int ga_itemsize;
+  int ga_growsize;
+  void    *ga_data;
+} garray_T;
+int mch_get_usernames(garray_T *usernames);
+]]
+
+NULL = ffi.cast 'void*', 0
+OK = 1
+FAIL = 0
+
+garray_new = () ->
+  ffi.new 'garray_T[1]'
+
+garray_get_len = (array) ->
+  array[0].ga_len
+
+garray_get_item = (array, index) ->
+  (ffi.cast 'void **', array[0].ga_data)[index]
+
+
+describe 'users function', ->
+
+  describe 'mch_get_usernames', ->
+
+    -- will probably not work on windows
+    current_username = os.getenv 'USER'
+
+    it 'returns FAIL if called with NULL', ->
+      eq FAIL, users.mch_get_usernames NULL
+
+    it 'fills the names garray with os usernames and returns OK', ->
+      ga_users = garray_new!
+      eq OK, users.mch_get_usernames ga_users
+      user_count = garray_get_len ga_users
+      assert.is_true user_count > 0
+      current_username_found = false
+      for i = 0, user_count - 1
+        name = ffi.string (garray_get_item ga_users, i)
+        if name == current_username
+          current_username_found = true
+      assert.is_true current_username_found
+