Initial integration test

Summary:
Created a very simple integration test, which will be useful as test plan for a lot of diffs.

It modifies a file and calls `hg snapshot createremote`, which for now does nothing. It already sets up edenapi, which will be necessary in following diffs.

Reviewed By: liubov-dmitrieva

Differential Revision: D29961686

fbshipit-source-id: 20e89a2d011daa35243d3a99d90a468f90000f15

eden/mononoke/tests/integration/test-snapshot.t

@@ -0,0 +1,52 @@
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License found in the LICENSE file in the root
+# directory of this source tree.
+
+  $ . "${TEST_FIXTURES}/library.sh"
+
+setup configuration
+  $ setup_common_config
+  $ cd $TESTTMP
+
+
+setup common configuration for these tests
+mononoke  local commit cloud backend
+  $ cat >> $HGRCPATH <<EOF
+  > [extensions]
+  > snapshot =
+  > EOF
+
+setup repo
+  $ hginit_treemanifest repo
+  $ cd repo
+  $ mkcommit "base_commit"
+  $ hg log -T '{short(node)}\n'
+  8b2dca0c8a72
+  $ echo a > a
+  $ hg addremove -q
+  $ hg commit -m "Add a"
+
+blobimport
+  $ cd $TESTTMP
+  $ blobimport repo/.hg repo
+
+start mononoke
+  $ mononoke
+  $ wait_for_mononoke
+
+start edenapi
+  $ setup_configerator_configs
+  $ start_edenapi_server_no_tls
+
+TEST CASES:
+
+Make a commit in the first client and upload it
+This test also checks file content deduplication. We upload 1 file content and 100 filenodes here.
+  $ cd repo
+  $ echo b > a
+  $ hg snapshot
+  abort: you need to specify a subcommand (run with --help to see a list of subcommands)
+  [255]
+  $ hg snapshot createremote

eden/scm/edenscm/hgext/snapshot/createremote.py

@@ -4,6 +4,6 @@
 # GNU General Public License version 2.
 
 
-def createremote(repo, ui, **opts):
+def createremote(ui, repo, **opts):
     # TODO(yancouto): Pipe command through and implement logic
     pass