Start a runtests.py script to setup a faux git repo for testing.

We'll soon be running 'unit' tests inside this git repo to ensure tito
does what it's supposed to do.

test/fakegitfiles/a.txt

@@ -0,0 +1 @@
+blah blah blah

test/fakegitfiles/b.txt

@@ -0,0 +1 @@
+omg omg omg

test/fakegitfiles/c.txt

@@ -0,0 +1 @@
+bbq bbq bbq

test/runtests.py

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+#!/usr/bin/env python
+
+import sys
+import os
+import os.path
+
+# Python libraries are one level up from where this script lives:
+TEST_SCRIPT_DIR = os.path.dirname(sys.argv[0])
+sys.path.append(os.path.join(TEST_SCRIPT_DIR, "../src/"))
+
+import spacewalk.releng.cli # prevents a circular import
+from spacewalk.releng.common import *
+
+# A location where we can safely create a test git repository.
+# WARNING: This location will be destroyed if present.
+TEST_GIT_LOCATION = '/tmp/tito-test-git-repo'
+
+if __name__ == '__main__':
+    print "Running tito tests."
+
+    if os.path.exists(TEST_GIT_LOCATION):
+        #error_out("Test Git repo already exists: %s" % TEST_GIT_LOCATION)
+        run_command('rm -rf %s' % TEST_GIT_LOCATION)
+
+    run_command('mkdir -p %s' % TEST_GIT_LOCATION)
+    run_command('cp -R %s/* %s' % (os.path.join(TEST_SCRIPT_DIR,
+        'fakegitfiles'), TEST_GIT_LOCATION))
+    os.chdir(TEST_GIT_LOCATION)
+    run_command('git init')
+    run_command('git add a.txt')
+    run_command('git commit -a -m "added a.txt"')
+    run_command('git add b.txt')
+    run_command('git commit -a -m "added b.txt"')
+    run_command('git add c.txt')
+    run_command('git commit -a -m "added c.txt"')
+
+