patch 8.2.2144: Vim9: some corner cases not tested

Problem:    Vim9: some corner cases not tested.
Solution:   Add a few tests.

src/testdir/test_vim9_cmd.vim

@@ -20,6 +20,9 @@ def Test_edit_wildcards()
 
   edit X`=filename`xx`=filenr`yy
   assert_equal('XXtestxx77yy', bufname())
+
+  CheckDefFailure(['edit `=xxx`'], 'E1001:')
+  CheckDefFailure(['edit `="foo"'], 'E1083:')
 enddef
 
 def Test_hardcopy_wildcards()
@@ -626,6 +629,20 @@ def Test_put_command()
   assert_equal('aaa', getline(4))
 
   bwipe!
+
+  CheckDefFailure(['put =xxx'], 'E1001:')
+enddef
+
+def Test_put_with_linebreak()
+  new
+  var lines =<< trim END
+    vim9script
+    pu =split('abc', '\zs')
+            ->join()
+  END
+  CheckScriptSuccess(lines)
+  getline(2)->assert_equal('a b c')
+  bwipe!
 enddef
 
 def Test_command_star_range()

src/testdir/test_vim9_script.vim

@@ -23,6 +23,11 @@ def Test_range_only()
   list
   assert_equal('three$', Screenline(&lines))
   bwipe!
+
+  # won't generate anything
+  if false
+    :123
+  endif
 enddef
 
 let g:alist = [7]
@@ -1890,6 +1895,9 @@ def Test_for_loop()
 enddef
 
 def Test_for_loop_fails()
+  CheckDefFailure(['for '], 'E1097:')
+  CheckDefFailure(['for x'], 'E1097:')
+  CheckDefFailure(['for x in'], 'E1097:')
   CheckDefFailure(['for # in range(5)'], 'E690:')
   CheckDefFailure(['for i In range(5)'], 'E690:')
   CheckDefFailure(['var x = 5', 'for x in range(5)'], 'E1017:')
@@ -3054,18 +3062,6 @@ def Test_no_unknown_error_after_error()
   delete('Xdef')
 enddef
 
-def Test_put_with_linebreak()
-  new
-  var lines =<< trim END
-    vim9script
-    pu =split('abc', '\zs')
-            ->join()
-  END
-  CheckScriptSuccess(lines)
-  getline(2)->assert_equal('a b c')
-  bwipe!
-enddef
-
 def InvokeNormal()
   exe "norm! :m+1\r"
 enddef

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2144,
 /**/
     2143,
 /**/