added specs for Renderer.transform

1 files changed, 32 insertions, 0 deletions

diff --git a/spec/unit/renderer/transform_spec.rb b/spec/unit/renderer/transform_spec.rb
new file mode 100644
index 0000000..fce6730
--- /dev/null
+++ b/spec/unit/renderer/transform_spec.rb
@@ -0,0 +1,32 @@
+require 'spec_helper'
+
+describe Zero::Renderer, '.transform' do
+  subject { Zero::Renderer }
+  let(:map) {{ 'text/html' => 'html' }}
+
+  shared_examples_for 'a transformer' do
+    before :each do
+      Zero::Renderer.type_map = map
+    end
+
+    after :each do
+      Zero::Renderer.type_map = {}
+    end
+
+    it "transforms a string" do
+      subject.transform(original).should eq(result)
+    end
+  end
+
+  context "with a shortable type" do
+    let(:original) { 'text/html' }
+    let(:result) { 'html' }
+    it_behaves_like 'a transformer'
+  end
+
+  context "with an unshortable type" do
+    let(:original) { 'application/json' }
+    let(:result) { 'application/json' }
+    it_behaves_like 'a transformer'
+  end
+end