Use clearer file extensions for test files.

.gitignore

@@ -1,3 +1,3 @@
 /doc/tags
 /misc
-/test/*.out
+/test/*.actual

test/README.markdown

@@ -19,9 +19,9 @@ call Setup()
 ```
 
 - Run the tests.
-- Inspect output from the new test.  If good, copy it to `foo.ok`.
+- Inspect output (in `foo.actual`) from the new test.  If good, copy it to `foo.expected`.
 - Run the tests to ensure new test's output is verified.
-- `rm *.out` and commit changes.
+- Commit changes.
 
 ### Limitations
 

test/helper.vim

@@ -9,11 +9,11 @@ function! Setup()
 endfunction
 
 function! DumpSigns(filename)
-  execute 'redir! > ' a:filename.'.out'
+  execute 'redir! > ' a:filename.'.actual'
     silent execute 'sign place'
   redir END
 endfunction
 
 function! DumpGitDiff(filename)
-  call system('git diff --staged fixture.txt > '.a:filename.'.out')
+  call system('git diff --staged fixture.txt > '.a:filename.'.actual')
 endfunction

test/test.sh

@@ -3,7 +3,8 @@
 # TODO: exit with non-zero status code when tests fail.
 
 
-rm -f *.out
+# Clean up.
+rm -f *.actual
 
 # Execute the tests.
 for testcase in test*.vim; do
@@ -14,9 +15,9 @@ done
 count_ok=0
 count_fail=0
 
-for expected in *.ok; do
+for expected in *.expected; do
   name=${expected%.*}
-  actual=$name.out
+  actual=$name.actual
 
   if diff $expected $actual; then
     count_ok=$((count_ok + 1))
@@ -27,9 +28,12 @@ for expected in *.ok; do
   fi
 done
 
+# Clean up.
 git reset HEAD fixture.txt > /dev/null
 git checkout fixture.txt
+rm -f *.actual
 
+# Print results.
 echo
 echo "$((count_ok + count_fail)) tests"
 echo "$count_ok ok"