patch 7.4.2307
Problem:    Several tests are old style.
Solution:   Turn them into new style tests. (Yegappan Lakshmanan)
diff --git a/src/testdir/test_fnameescape.vim b/src/testdir/test_fnameescape.vim
new file mode 100644
index 0000000..ce2cd3f
--- /dev/null
+++ b/src/testdir/test_fnameescape.vim
@@ -0,0 +1,21 @@
+
+" Test if fnameescape is correct for special chars like !
+function! Test_fnameescape()
+  let fname = 'Xspa ce'
+  let status = v:false
+  try
+    exe "w! " . fnameescape(fname)
+    let status = v:true
+  endtry 
+  call assert_true(status, "Space")
+  call delete(fname)
+
+  let fname = 'Xemark!'
+  let status = v:false
+  try
+    exe "w! " . fnameescape(fname)
+    let status = v:true
+  endtry
+  call assert_true(status, "ExclamationMark")
+  call delete(fname)
+endfunction