Fixes & API unit testing (#58)

* api - add OperationID

  helps when using pyswagger and is visible via
  http://localhost:8123/swagger/index.html?displayOperationId=true
  gin-swagger can not set displayOperationId yet

* api - match paramters to their property equivalents

  pascalcase & sometimes replacing the name (e.g. device -> DeviceName)

* api - use ShouldBindJSON instead of BindJSON

 BindJSON sets the content-type text/plain

* api - we renamed, we regenerated

* device - allow - in DeviceName wg-example0.conf etc

* api - more pascalcase & argument renames

* api - marshal DeletedAt as string

  gorm.DeletedAt is of type sql.NullTime
  NullTime declares Time & Valid as properties
  DeletedAt marshals as time.Time
  swaggertype allows only basic types
  -> string

* Peer - export UID/DeviceType in json
 UID/DeviceType is required, skipping in json, skips it in marshalling,
 next unmarshalling fails

* assets - name forms for use with mechanize

* api - match error message

* add python3/pyswagger based unittesting
 - initializes a clean install by configuration via web service
 - tests the rest api

* tests - test address exhaustion

* tests - test network expansion

Co-authored-by: Markus Koetter <koetter@cispa.de>

tests/conf/config.yml

@@ -0,0 +1,27 @@
+core:
+  listeningAddress: :8123
+  externalUrl: https://wg.example.org
+  title: Example WireGuard VPN
+  company: Example.org
+  mailFrom: WireGuard VPN <noreply+wg@example.org>
+  logoUrl: /img/logo.png
+  adminUser: wg@example.org
+  adminPass: abadchoice
+  editableKeys: true
+  createDefaultPeer: true
+  selfProvisioning: true
+  ldapEnabled: false
+database:
+  typ: sqlite
+  database: test.db
+# :memory: does not work
+email:
+  host: 127.0.0.1
+  port: 25
+  tls: false
+wg:
+  devices:
+    - wg-example0
+  defaultDevice: wg-example0
+  configDirectory: /etc/wireguard
+  manageIPAddresses: true

tests/conf/wg-example0.conf

@@ -0,0 +1,16 @@
+# AUTOGENERATED FILE - DO NOT EDIT
+# -WGP- Interface: wg-example / Updated: 2021-09-27 08:52:05.537618409 +0000 UTC / Created: 2021-09-24 10:06:46.903674496 +0000 UTC
+# -WGP- Interface display name: TheInterface
+# -WGP- Interface mode: server
+# -WGP- PublicKey = HIgo9xNzJMWLKASShiTqIybxZ0U3wGLiUeJ1PKf8ykw=
+
+[Interface]
+
+# Core settings
+PrivateKey = yAnz5TF+lXXJte14tji3zlMNq+hd2rYUIgJBgB3fBmk=
+Address = 10.0.0.0/24
+
+# Misc. settings (optional)
+ListenPort = 51820
+FwMark = 1
+SaveConfig = true