DRY quitting vim after each test.

test/test.sh

@@ -1,12 +1,11 @@
 #!/usr/bin/env bash
 
 # TODO: exit with non-zero status code when tests fail.
-# TODO: quit vim after each testcase inside loop below (instead of in testcase).
 
 rm -f *.out
 
 for testcase in test*.vim; do
-  vim -N -u NONE -S $testcase                                   # testFoo.vim
+  vim -N -u NONE -S $testcase -c 'quit!'                        # testFoo.vim
   testname=${testcase%.*}                                       # testFoo
   name=${testname:4}                                            # Foo
   name="$(tr '[:upper:]' '[:lower:]' <<< ${name:0:1})${name:1}" # foo