validate_config: improve tests

closes ticket:2809

src/allmydata/client.py

@@ -179,7 +179,8 @@ class Client(node.Node, pollmixin.PollMixin):
         node.Node.__init__(self, basedir)
         # All tub.registerReference must happen *after* we upcall, since
         # that's what does tub.setLocation()
-        configutil.validate_config(self.config_fname, self.config, _valid_config_sections())
+        configutil.validate_config(self.config_fname, self.config,
+                                   _valid_config_sections())
         self._magic_folder = None
         self.started_timestamp = time.time()
         self.logSource="Client"

src/allmydata/scripts/create_node.py

@@ -97,27 +97,7 @@ def write_node_config(c, config):
     c.write("#ssh.authorized_keys_file = ~/.ssh/authorized_keys\n")
     c.write("\n")
 
-
-def create_node(config, out=sys.stdout, err=sys.stderr):
-    basedir = config['basedir']
-    # This should always be called with an absolute Unicode basedir.
-    precondition(isinstance(basedir, unicode), basedir)
-
-    if os.path.exists(basedir):
-        if listdir_unicode(basedir):
-            print >>err, "The base directory %s is not empty." % quote_local_unicode_path(basedir)
-            print >>err, "To avoid clobbering anything, I am going to quit now."
-            print >>err, "Please use a different directory, or empty this one."
-            return -1
-        # we're willing to use an empty directory
-    else:
-        os.mkdir(basedir)
-    write_tac(basedir, "client")
-
-    c = open(os.path.join(basedir, "tahoe.cfg"), "w")
-
-    write_node_config(c, config)
-
+def write_client_config(c, config):
     c.write("[client]\n")
     c.write("# Which services should this client connect to?\n")
     c.write("introducer.furl = %s\n" % config.get("introducer", ""))
@@ -149,6 +129,27 @@ def create_node(config, out=sys.stdout, err=sys.stderr):
     c.write("enabled = false\n")
     c.write("\n")
 
+def create_node(config, out=sys.stdout, err=sys.stderr):
+    basedir = config['basedir']
+    # This should always be called with an absolute Unicode basedir.
+    precondition(isinstance(basedir, unicode), basedir)
+
+    if os.path.exists(basedir):
+        if listdir_unicode(basedir):
+            print >>err, "The base directory %s is not empty." % quote_local_unicode_path(basedir)
+            print >>err, "To avoid clobbering anything, I am going to quit now."
+            print >>err, "Please use a different directory, or empty this one."
+            return -1
+        # we're willing to use an empty directory
+    else:
+        os.mkdir(basedir)
+    write_tac(basedir, "client")
+
+    c = open(os.path.join(basedir, "tahoe.cfg"), "w")
+
+    write_node_config(c, config)
+    write_client_config(c, config)
+
     c.close()
 
     from allmydata.util import fileutil

src/allmydata/test/test_configutil.py

@@ -5,6 +5,8 @@ from twisted.trial import unittest
 from allmydata.util import configutil
 from allmydata.test.no_network import GridTestMixin
 from .cli.test_cli import CLITestMixin
+from ..scripts import create_node
+from .. import client
 
 
 class ConfigUtilTests(CLITestMixin, GridTestMixin, unittest.TestCase):
@@ -54,11 +56,12 @@ class ConfigUtilTests(CLITestMixin, GridTestMixin, unittest.TestCase):
             f.write('[node]\nvalid = foo\ninvalid = foo\n')
 
         config = configutil.get_config(fname)
-        self.assertRaises(
+        e = self.assertRaises(
             configutil.UnknownConfigError,
             configutil.validate_config,
             fname, config, dict(node=['valid']),
         )
+        self.assertIn("section [node] contains unknown option 'invalid'", str(e))
 
     def test_config_validation_invalid_section(self):
         d = self.mktemp()
@@ -69,8 +72,27 @@ class ConfigUtilTests(CLITestMixin, GridTestMixin, unittest.TestCase):
             f.write('[node]\nvalid = foo\n[invalid]\n')
 
         config = configutil.get_config(fname)
-        self.assertRaises(
+        e = self.assertRaises(
             configutil.UnknownConfigError,
             configutil.validate_config,
             fname, config, dict(node=['valid']),
         )
+        self.assertIn("contains unknown section [invalid]", str(e))
+
+    def test_create_client_config(self):
+        d = self.mktemp()
+        os.mkdir(d)
+        fname = os.path.join(d, 'tahoe.cfg')
+
+        with open(fname, 'w') as f:
+            opts = {"nickname": "nick",
+                    "webport": "tcp:3456",
+                    "hide-ip": False,
+                    }
+            create_node.write_node_config(f, opts)
+            create_node.write_client_config(f, opts)
+
+        config = configutil.get_config(fname)
+        # should succeed, no exceptions
+        configutil.validate_config(fname, config,
+                                   client._valid_config_sections())