Revert "Clean up commented or unused code"

This reverts commit b4e7f5c425df48f7e946d792184d1d1b44879fe9.

Change-Id: I31a65516e65c3eb6528f241e36c1e45f3753f4c0
Signed-off-by: David Garcia <david.garcia@canonical.com>
diff --git a/tests/charms/layers/proxy-ci/README.md b/tests/charms/layers/proxy-ci/README.md
new file mode 100644
index 0000000..c16d9d8
--- /dev/null
+++ b/tests/charms/layers/proxy-ci/README.md
@@ -0,0 +1,3 @@
+# Overview
+
+A `charm layer` to test the functionality of proxy charms.
diff --git a/tests/charms/layers/proxy-ci/actions.yaml b/tests/charms/layers/proxy-ci/actions.yaml
new file mode 100644
index 0000000..304b520
--- /dev/null
+++ b/tests/charms/layers/proxy-ci/actions.yaml
@@ -0,0 +1,16 @@
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#     Unless required by applicable law or agreed to in writing, software
+#     distributed under the License is distributed on an "AS IS" BASIS,
+#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#     See the License for the specific language governing permissions and
+#     limitations under the License.
+
+test:
+    description: "Verify that the action can run."
diff --git a/tests/charms/layers/proxy-ci/actions/test b/tests/charms/layers/proxy-ci/actions/test
new file mode 100755
index 0000000..7e30af4
--- /dev/null
+++ b/tests/charms/layers/proxy-ci/actions/test
@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+##
+# Copyright 2016 Canonical Ltd.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+##
+import sys
+sys.path.append('lib')
+
+from charms.reactive import main, set_flag
+from charmhelpers.core.hookenv import action_fail, action_name
+
+"""
+`set_state` only works here because it's flushed to disk inside the `main()`
+loop. remove_state will need to be called inside the action method.
+"""
+set_flag('actions.{}'.format(action_name()))
+
+try:
+    main()
+except Exception as e:
+    action_fail(repr(e))
diff --git a/tests/charms/layers/proxy-ci/layer.yaml b/tests/charms/layers/proxy-ci/layer.yaml
new file mode 100644
index 0000000..186f1db
--- /dev/null
+++ b/tests/charms/layers/proxy-ci/layer.yaml
@@ -0,0 +1,18 @@
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#     Unless required by applicable law or agreed to in writing, software
+#     distributed under the License is distributed on an "AS IS" BASIS,
+#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#     See the License for the specific language governing permissions and
+#     limitations under the License.
+
+includes:
+    - 'layer:basic'
+    - 'layer:vnfproxy'
+    - 'layer:sshproxy'
diff --git a/tests/charms/layers/proxy-ci/metadata.yaml b/tests/charms/layers/proxy-ci/metadata.yaml
new file mode 100644
index 0000000..37120e3
--- /dev/null
+++ b/tests/charms/layers/proxy-ci/metadata.yaml
@@ -0,0 +1,32 @@
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#     Unless required by applicable law or agreed to in writing, software
+#     distributed under the License is distributed on an "AS IS" BASIS,
+#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#     See the License for the specific language governing permissions and
+#     limitations under the License.
+
+name: proxy-ci
+summary: <Fill in summary here>
+maintainer: Adam Israel <Adam.Israel@ronin>
+description: |
+  <Multi-line description here>
+tags:
+  # Replace "misc" with one or more whitelisted tags from this list:
+  # https://jujucharms.com/docs/stable/authors-charm-metadata
+  - misc
+subordinate: false
+series:
+  - xenial
+provides:
+    db:
+        interface: mysql
+requires:
+    app:
+        interface: mysql
diff --git a/tests/charms/layers/proxy-ci/reactive/proxy_ci.py b/tests/charms/layers/proxy-ci/reactive/proxy_ci.py
new file mode 100644
index 0000000..cf2ed99
--- /dev/null
+++ b/tests/charms/layers/proxy-ci/reactive/proxy_ci.py
@@ -0,0 +1,66 @@
+# Copyright 2019 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+#     Unless required by applicable law or agreed to in writing, software
+#     distributed under the License is distributed on an "AS IS" BASIS,
+#     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#     See the License for the specific language governing permissions and
+#     limitations under the License.
+
+from charmhelpers.core.hookenv import (
+    action_fail,
+    action_set,
+    status_set,
+)
+from charms.reactive import (
+    set_flag,
+    clear_flag,
+    when_not,
+    when,
+)
+import charms.sshproxy
+
+
+@when_not('proxy-ci.installed')
+def install_proxy_ci():
+    status_set('blocked', "Waiting for SSH credentials.")
+    set_flag('proxy-ci.installed')
+
+
+@when('actions.test', 'proxy-ci.installed')
+def test():
+    err = ''
+    try:
+        cmd = ['hostname']
+        result, err = charms.sshproxy._run(cmd)
+        if len(result) == 0:
+            raise Exception("Proxy failed")
+    except Exception as e:
+        action_fail('command failed: {}'.format(e))
+    else:
+        action_set({'output': result})
+    finally:
+        clear_flag('actions.test')
+
+
+@when('db.joined')
+def provides_db(db):
+    """Simulate providing database credentials."""
+    db.configure(
+        database="mydb",
+        user="myuser",
+        password="mypassword",
+        host="myhost",
+        slave="myslave",
+    )
+
+
+@when('db.available')
+def requires_db(db):
+    """Simulate receiving database credentials."""
+    pass