add a full integration test via main()

cam/tests/test_main.py

+import getpass
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+import unittest
+from cam import main
+
+
+class MainTest(unittest.TestCase):
+
+    def setUp(self):
+        self.tmpdir = tempfile.mkdtemp()
+        self.cfgfile = os.path.join(self.tmpdir, 'test.conf')
+        with open(self.cfgfile, 'w') as fd:
+            fd.write("""
+[ca]
+cn = Test Ca
+org = Test
+country = IE
+email = ca@test.org
+bits = 1024
+
+[web]
+cn = www.test.org
+""")
+
+        def _fake_getpass(prompt):
+            return 'testpass'
+        getpass.getpass = _fake_getpass
+
+    def tearDown(self):
+        shutil.rmtree(self.tmpdir)
+
+    def _run(self, *args):
+        sys.argv = ['cam', '--config=%s' % self.cfgfile] + list(args)
+        try:
+            return main.main()
+        except SystemExit, e:
+            return e.code
+
+    def test_init_and_sanity_check(self):
+        self.assertEquals(None, self._run('init'))
+        self.assertEquals(None, self._run('gen', 'web'))
+
+        ca_file = os.path.join(self.tmpdir, 'public/ca.pem')
+        crt_file = os.path.join(self.tmpdir, 'public/certs/web.pem')
+        self.assertTrue(os.path.exists(ca_file))
+        self.assertTrue(os.path.exists(crt_file))
+
+        pipe = subprocess.Popen(
+            ['openssl', 'verify', '-CAfile', ca_file, '-verbose', crt_file],
+            stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+        output = pipe.communicate()[0]
+        result = pipe.returncode
+        self.assertEquals(0, result)
+
+        print output
+        self.assertTrue('error ' not in output)
+