cleaning house

Author: ericchiang

tests/README.md

@@ -2,6 +2,17 @@
 
 A simple set of tests to help maintain sanity.
 
-These tests don't actually test functionality 
+These tests don't actually test functionality they only make sure pup behaves
+the same after code changes.
 
+`cmds.txt` holds a list of commands to perform on `index.html`.
+
+The output of each of these commands produces a specific sha1sum. The expected
+sha1sum of each command is in `expected_output.txt`.
+
+Running the `test` file (just a bash script) will run the tests and diff the
+output. If pup has changed at all since the last version, you'll see the sha1sums
+that changed and the commands that produced that change. 
+
+To overwrite the current sha1sums, just run `python run.py > expected_output.txt`