Refactor tests to be isolated.

test/test.sh

@@ -1,13 +1,19 @@
 #!/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
 
-# Run the tests.
-vim -N -u NONE -S test.vim
-
-# Verify the outputs.
-for expected in *.ok; do
-  name=${expected%.*}
+for testcase in test*.vim; do
+  vim -N -u NONE -S $testcase                                   # testFoo.vim
+  testname=${testcase%.*}                                       # testFoo
+  name=${testname:4}                                            # Foo
+  name="$(tr '[:upper:]' '[:lower:]' <<< ${name:0:1})${name:1}" # foo
+  expected=$name.ok
   actual=$name.out
   diff $expected $actual && echo "$name ok" || echo "$name failed"
 done
+
+git checkout fixture.txt
+