adds list functionality

- adds rest connection with gets a JSON Object
  with a "messages" list inside it.
- test case, which pushes a new message
  and gets an entire list. checking that the
  first element is "hello" and the last element
  to be the new element just pushed

app/src/androidTest/java/com/example/bump/RestCryptTest.kt

@@ -2,6 +2,7 @@ package com.example.bump
 
 import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.json.JSONArray
 import org.json.JSONObject
 
 import org.junit.Test
@@ -38,10 +39,10 @@ class RestCryptTest{
         val lock = CountDownLatch(1)
 
 
-        fun messageTester(messageEncrypted: String) {
+        fun messageTester(messageEncrypted: JSONObject) {
             val message = MessageProcessor(code)
 
-            val messageData: String = JSONObject(messageEncrypted).get("data").toString()
+            val messageData: String = messageEncrypted.get("data").toString()
             assertEquals(messageData, encrypted)
             val data = message.decrypt(messageData)
             assertEquals(data, testMessage)
@@ -55,8 +56,42 @@ class RestCryptTest{
         }
 
         lock.await(200000, TimeUnit.MILLISECONDS)
+    }
+
+    @Test
+    fun pushListAndDecrypt() {
+        val code = "dydoes-unknowledgeable-indiscretion-househusbands-pot-walloper-indiscretion-discophorous-transcriptions-dydoes-poodle-faker-transcriptions-budlike"
+        val testMessage = getRandomString(32)
+        val context = InstrumentationRegistry.getInstrumentation().targetContext
+        var encrypted = ""
+
+        val lock = CountDownLatch(1)
 
 
+        fun listTester(resultList: JSONObject) {
+            val message = MessageProcessor(code)
+            val messages: JSONArray = resultList.get("messages") as JSONArray
+
+            var messageEncoded = messages[0] as JSONObject
+            var messageData = messageEncoded.get("data").toString()
+            var data = message.decrypt(messageData)
+            assertEquals(data, "hello")
+
+            messageEncoded = messages[messages.length()-1] as JSONObject
+            messageData = messageEncoded.get("data").toString()
+            data = message.decrypt(messageData)
+            assertEquals(data, testMessage)
+            lock.countDown()
+
+        }
+
+        val message = MessageProcessor(code)
+        encrypted = message.encrypt(testMessage)
+        RestSingleton.getInstance(context).push(message.sender, encrypted) {
+            RestSingleton.getInstance(context).list(message.sender) { i -> listTester(i) }
+        }
+
+        lock.await(200000, TimeUnit.MILLISECONDS)
     }
 
 }