add api limiter test

test/unit/api_limiter_test.rb

@@ -0,0 +1,43 @@
+require 'test_helper'
+
+class ApiLimiterTest < ActiveSupport::TestCase
+  context "for reads" do
+    context "for an anonymous user" do
+      setup do
+        @count = 5
+        @user = AnonymousUser.new
+        CurrentUser.user = @user
+      end
+
+      should "respect api limits" do
+        @user.expects(:api_hourly_limit).with(true).times(@count + 1).returns(@count)
+
+        @count.times do
+          assert_equal(false, ApiLimiter.throttled?(CurrentUser.id || "127.0.0.1", "GET"))
+        end
+
+        assert_equal(true, ApiLimiter.throttled?(CurrentUser.id || "127.0.0.1", "GET"))
+      end
+    end
+  end
+
+  context "for writes" do
+    context "for an anonymous user" do
+      setup do
+        @count = 5
+        @user = AnonymousUser.new
+        CurrentUser.user = @user
+      end
+
+      should "respect api limits" do
+        @user.expects(:api_hourly_limit).with(false).times(@count + 1).returns(@count)
+
+        @count.times do
+          assert_equal(false, ApiLimiter.throttled?(CurrentUser.id || "127.0.0.1", "POST"))
+        end
+
+        assert_equal(true, ApiLimiter.throttled?(CurrentUser.id || "127.0.0.1", "POST"))
+      end
+    end
+  end
+end