Add functional tests through "cmdtests"

These tests run a list of commands on both the system gentoolkit and the
source from the active work directory, and then compares the results.

It's a great way to verify that a refactoring didn't introduce an
unwanted change in behavior.

1 files changed, 16 insertions, 0 deletions

diff --git a/cmdtests/README.txt b/cmdtests/README.txt
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+Use the "runtests.sh" script to test the output of all commands in "cmds.txt"
+against the output that the version of gentoolkit installed on the system
+yields.
+
+It's a great way to verify that a refactoring didn't affect output.
+
+Usage:
+
+$ cd cmdtests
+$ ./runtests.sh
+
+You can also test against a specific version of gentoolkit instead. Clone a
+copy of gentoolkit to test against and then do:
+
+$ cd cmdtests
+$ ./runtests.sh /path/to/othergentoolkit/pym