Add geocod.io exceptions

lib/geocoder/lookups/geocodio.rb

@@ -15,10 +15,17 @@ module Geocoder::Lookup
 
     def results(query)
       return [] unless doc = fetch_data(query)
-      if doc['error'].nil?
-        return doc["results"]
+      return doc["results"] if doc['error'].nil?
+      
+      if doc['error'] == 'Invalid API key'
+        raise_error(Geocoder::InvalidApiKey) ||
+          warn("Geocodio service error: invalid API key.")
+      elsif doc['error'].match(/You have reached your daily maximum/)
+        raise_error(Geocoder::OverQueryLimitError, doc['error']) ||
+          warn("Geocodio service error: #{doc['error']}.")
       else
-        warn "Geocodio service error: #{doc['error']}."
+        raise_error(Geocoder::InvalidRequest, doc['error']) ||
+          warn("Geocodio service error: #{doc['error']}.")
       end
       []
     end

test/fixtures/geocodio_bad_api_key

+{
+  "error": "Invalid API key"
+}

test/fixtures/geocodio_invalid

+{
+  "error": "Could not geocode address, zip code, city or city/state are required"
+}
+

test/fixtures/geocodio_over_query_limit

+{
+  "error": "You have reached your daily maximum, please add a payment method for continued use. You can configure billing at https://dash.geocod.io"
+}
+

test/unit/lookups/geocodio_test.rb

@@ -31,4 +31,25 @@ class GeocodioTest < GeocoderTestCase
     query = Geocoder::Query.new([45.423733, -75.676333])
     assert_match /reverse/, query.url
   end
+
+  def test_raises_invalid_request_exception
+    Geocoder.configure Geocoder.configure(:always_raise => [Geocoder::InvalidRequest])
+    assert_raises Geocoder::InvalidRequest do
+      Geocoder.search("invalid")
+    end
+  end
+
+  def test_raises_api_key_exception
+    Geocoder.configure Geocoder.configure(:always_raise => [Geocoder::InvalidApiKey])
+    assert_raises Geocoder::InvalidApiKey do
+      Geocoder.search("bad api key")
+    end
+  end
+
+  def test_raises_over_limit_exception
+    Geocoder.configure Geocoder.configure(:always_raise => [Geocoder::OverQueryLimitError])
+    assert_raises Geocoder::OverQueryLimitError do
+      Geocoder.search("over query limit")
+    end
+  end
 end