added setup and teardown methods to create and drop test table + columns

test/test_geo_foo.rb

@@ -1,8 +1,23 @@
 require 'geo_foo/core'
 require 'helper'
+require 'models/location'
 
 class TestGeoFoo < ActiveSupport::TestCase
-
+
+  def setup
+      ActiveRecord::Base.connection.execute(
+        "CREATE TABLE locations (
+           point geometry
+         );"
+      )
+  end
+
+  def teardown
+    ActiveRecord::Base.connection.execute(
+      "DROP TABLE locations;"
+    )
+  end
+
   test "database connection" do
     # perform a query first to 'wake-up' the connection
     assert_equal(query_scalar("SELECT 5").to_i, 5)
@@ -16,10 +31,14 @@ class TestGeoFoo < ActiveSupport::TestCase
   test "as_point" do
     latitude = 5
     longitude = 42
-    point = GeoFoo::Core.as_point latitude, longitude
+    point = GeoFoo.as_point latitude, longitude
     assert(query("SELECT #{point}"))
     assert_equal(query_scalar("SELECT ST_X(#{point})").to_i, 42)
     assert_equal(query_scalar("SELECT ST_Y(#{point})").to_i, 5)
   end
 
+  test "ar" do
+    assert_not_nil Location
+  end
+
 end