Additional testing

spec/topspin_api/pagination_spec.rb

@@ -0,0 +1,48 @@
+require 'spec_helper'
+
+describe TopspinApi::Pagination do
+
+  before :all do
+    @klass = Class.new.send :include, described_class
+  end
+
+  subject { @klass.new }
+
+  describe "decorate" do
+    context "given a hash-like object with pagination-related keys" do
+      before do
+        @hash = {'total_pages' => 52, 'current_page' => 14, 'total_entries' => 362, 'per_page' => 7}
+        @obj = Object.new
+      end
+
+      it "adds these keys as methods to the given object" do
+        subject.decorate @hash, @obj
+        @obj.total_pages.should == 52
+        @obj.current_page.should == 14
+        @obj.total_entries.should == 362
+        @obj.per_page.should == 7
+      end
+
+      it "returns the object" do
+        subject.decorate(@hash, @obj).should == @obj
+      end
+
+      it "converts the hash values to integers as needed" do
+        @hash['per_page'] = '7'
+        subject.decorate(@hash, @object).per_page.should == 7
+      end
+
+      it "gracefully handles missing keys" do
+        @hash.delete 'total_pages'
+        expect { subject.decorate(@hash, @obj) }.to_not raise_error
+      end
+    end
+
+    context "without a hash-like object" do
+      it "raises NoMethodError" do
+        expect { subject.decorate Object.new, Object.new }.to raise_error(NoMethodError)
+      end
+    end
+  end
+
+end