fixup! fixup! Let's not make testing hard: use shiftwidth() wrapper

Author: blueyed

tests/_setup.vader

@@ -0,0 +1,14 @@
+Execute (Setup):
+  " so it is clear what values later tests are working with
+  setglobal noexpandtab tabstop=8 softtabstop=0 shiftwidth=8
+
+  if exists('*shiftwidth')
+    function! ShiftWidth()
+      return shiftwidth()
+    endfunction
+  else
+    Log "WARNING: shiftwidth() not available!"
+    function! ShiftWidth()
+      return &shiftwidth
+    endfunction
+  endif