Tests pass on Python 3.

src/allmydata/cli/grid_manager.py

@@ -1,10 +1,10 @@
 from __future__ import print_function
+from past.builtins import unicode
 
 from datetime import (
     datetime,
     timedelta,
 )
-import json
 
 import click
 
@@ -23,6 +23,7 @@ from allmydata.grid_manager import (
     save_grid_manager,
     load_grid_manager,
 )
+from allmydata.util import jsonbytes as json
 
 
 @click.group()
@@ -102,7 +103,7 @@ def public_identity(config):
 
 @grid_manager.command()
 @click.argument("name")
-@click.argument("public_key", type=click.UNPROCESSED)
+@click.argument("public_key", type=click.STRING)
 @click.pass_context
 def add(ctx, name, public_key):
     """
@@ -160,7 +161,9 @@ def list(ctx):
     """
     for name in sorted(ctx.obj.grid_manager.storage_servers.keys()):
         blank_name = " " * len(name)
-        click.echo("{}: {}".format(name, ctx.obj.grid_manager.storage_servers[name].public_key_string()))
+        click.echo("{}: {}".format(
+            name,
+            unicode(ctx.obj.grid_manager.storage_servers[name].public_key_string(), "utf-8")))
         for cert in ctx.obj.grid_manager.storage_servers[name].certificates:
             delta = datetime.utcnow() - cert.expires
             click.echo("{}  cert {}: ".format(blank_name, cert.index), nl=False)
@@ -209,7 +212,7 @@ def sign(ctx, name, expiry_days):
                     )
             next_serial += 1
         with f:
-            f.write(certificate_data)
+            f.write(certificate_data.encode("ascii"))
 
 
 def _config_path_from_option(config):

src/allmydata/test/cli/test_grid_manager.py

@@ -1,7 +1,6 @@
 from future.utils import raise_
 
 import os
-import json
 from io import (
     BytesIO,
 )
@@ -31,6 +30,7 @@ from twisted.python.filepath import (
 from twisted.python.runtime import (
     platform,
 )
+from allmydata.util import jsonbytes as json
 
 
 class GridManagerCommandLine(TestCase):
@@ -66,8 +66,8 @@ class GridManagerCommandLine(TestCase):
         An invalid config is reported to the user
         """
         with self.runner.isolated_filesystem():
-            with open("config.json", "w") as f:
-                json.dump({"not": "valid"}, f)
+            with open("config.json", "wb") as f:
+                f.write(json.dumps_bytes({"not": "valid"}))
             result = self.runner.invoke(grid_manager, ["--config", ".", "public-identity"])
             self.assertNotEqual(result.exit_code, 0)
             self.assertIn(
@@ -117,7 +117,7 @@ class GridManagerCommandLine(TestCase):
         }
         result = self.invoke_and_check(
             grid_manager, ["--config", "-", "list"],
-            input=BytesIO(json.dumps(config)),
+            input=BytesIO(json.dumps_bytes(config)),
         )
         self.assertEqual(result.exit_code, 0)
         self.assertEqual(
@@ -260,7 +260,7 @@ class TahoeAddGridManagerCert(TestCase):
         """
         code, out, err = yield run_cli(
             "admin", "add-grid-manager-cert", "--filename", "-",
-            stdin="the cert",
+            stdin=b"the cert",
         )
         self.assertIn(
             "Must provide --name",
@@ -274,7 +274,7 @@ class TahoeAddGridManagerCert(TestCase):
         """
         code, out, err = yield run_cli(
             "admin", "add-grid-manager-cert", "--name", "foo",
-            stdin="the cert",
+            stdin=b"the cert",
         )
         self.assertIn(
             "Must provide --filename",
@@ -287,7 +287,7 @@ class TahoeAddGridManagerCert(TestCase):
         we can add a certificate
         """
         nodedir = self.mktemp()
-        fake_cert = """{"certificate": "", "signature": ""}"""
+        fake_cert = b"""{"certificate": "", "signature": ""}"""
 
         code, out, err = yield run_cli(
             "--node-directory", nodedir,
@@ -301,7 +301,7 @@ class TahoeAddGridManagerCert(TestCase):
 
         self.assertIn("tahoe.cfg", nodepath.listdir())
         self.assertIn(
-            "foo = foo.cert",
+            b"foo = foo.cert",
             config_data,
         )
         self.assertIn("foo.cert", nodepath.listdir())