added APILimitReachedException

lib/musix_match/api/base.rb

@@ -1,6 +1,7 @@
 module MusixMatch
   module API
     class AuthenticationFailedException < Exception; end
+    class APILimiReachedException < Exception; end
     class APIKeyNotSpecifiedException < Exception; end
 
     class Base
@@ -31,7 +32,10 @@ def self.get(method, params={})
         when String
           JSON.parse(response.parsed_response)
         end
-        raise AuthenticationFailedException.new('Authentication failed, probably because of a bad API key') if parsed_response['message']['header']['status_code'] == 401
+        case  parsed_response['message']['header']['status_code']
+          when 401 then raise AuthenticationFailedException.new('Authentication failed, probably because of a bad API key')
+          when 402 then raise APILimiReachedException.new('A limit was reached, either you exceeded per hour requests limits or your balance is insufficient')
+        end
         parsed_response
       end
 

spec/api/base_spec.rb

@@ -30,7 +30,7 @@
     result.should == parsed_response
   end
 
-  it "should raise an error" do
+  it "should raise an error AuthenticationFailedException" do
     lambda do
       MusixMatch::API::Base.api_key = 'API_KEY'
       method = 'lyrics.search'
@@ -43,5 +43,20 @@
       result = MusixMatch::API::Base.get(method, params)
       result.should == parsed_response
     end.should raise_error(MusixMatch::API::AuthenticationFailedException)
-  end  
+  end
+
+  it "should raise an error APIAccessLimitException" do
+    lambda do
+      MusixMatch::API::Base.api_key = 'API_KEY'
+      method = 'lyrics.search'
+      params = {:q_artist => 'artist name'}
+      url = MusixMatch::API::Base.url_for(method, params)
+      response = mock(HTTParty::Response)
+      parsed_response = {'message' => {'header' => {'status_code' => 402}}}
+      response.should_receive(:parsed_response).twice.and_return(parsed_response)
+      HTTParty.should_receive(:get).with(url).and_return(response)
+      result = MusixMatch::API::Base.get(method, params)
+      result.should == parsed_response
+    end.should raise_error(MusixMatch::API::APILimiReachedException)
+  end
 end