add env vars support in config

Pearlception/config/database.yml

@@ -21,9 +21,9 @@ stats_development: &stats
   adapter: mysql2
   encoding: utf8
   pool: 5
-  username: ivauser
-  password: <%= ENV['DB_PASS'] %>
-  host: taylors.c02zesysnssi.us-west-2.rds.amazonaws.com
+  username: <%= ENV['STATS_DB_USER'] %> 
+  password: <%= ENV['STATS_DB_PASS'] %>
+  host: <%= ENV['STATS_DB_URL'] %>
   port: 3306
   database: main
 

Pearlception/test/models/oyster_test.rb

@@ -1,9 +1,17 @@
 require 'test_helper'
 
 class OysterTest < ActiveSupport::TestCase
-    test "the_truth" do 
-	f = Oyster.first
-	puts f.inspect
+
+    test "check_connection" do 
+        Oyster.connection
         assert true
     end
+
+    test "get_first_oyster" do
+        first = Oyster.first
+        id = first.oyster_id == 1
+        run = first.run_id == 257
+        grade = first.grade == "Rej"
+        assert id && run && grade
+    end
 end