extracted the building of template tree

This step is a preparation to extend the functionality of the renderer.
To make the main class easier, the search for templates and building of
the tree is extracted into its own class.

4 files changed, 89 insertions, 5 deletions

diff --git a/spec/unit/zero/renderer/read_template_path_bang_spec.rb b/spec/unit/zero/renderer/read_template_path_bang_spec.rb
index 8655777..948a3cc 100644
--- a/spec/unit/zero/renderer/read_template_path_bang_spec.rb
+++ b/spec/unit/zero/renderer/read_template_path_bang_spec.rb
@@ -1,14 +1,14 @@
 require 'spec_helper'
 
-describe Zero::Renderer, 'read_template_path!' do
+describe Zero::Renderer, '#read_template_path!' do
   subject { Zero::Renderer.new(template_path, type_map) }
-  let(:template_path) { 'foo' }
+  let(:template_path) { 'foo/' }
   let(:file_list) { ['foo/welcome/index.html.erb'] }
 
   before :each do
     Dir.stub(:[]) do |arg|
       if arg == 'foo/**/*.*'
-        file_list 
+        file_list
       else
         []
       end
@@ -58,7 +58,7 @@ describe Zero::Renderer, 'read_template_path!' do
   end
 
   it 'creates an empty templates list without templates in path' do
-    subject = Zero::Renderer.new("bar", {})
+    subject = Zero::Renderer.new("bar/", {})
     subject.read_template_path!
 
     subject.templates.should eq({})
diff --git a/spec/unit/zero/renderer/render_spec.rb b/spec/unit/zero/renderer/render_spec.rb
index 30d2225..3270ac3 100644
--- a/spec/unit/zero/renderer/render_spec.rb
+++ b/spec/unit/zero/renderer/render_spec.rb
@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe Zero::Renderer, '#render' do
   subject { Zero::Renderer.new(template_path, type_map) }
-  let(:template_path) { 'spec/fixtures/templates' }
+  let(:template_path) { 'spec/fixtures/templates/' }
   let(:type_map) {{
     'html' => ['text/html', 'text/xml', '*/*'],
     'json' => ['application/json', 'plain/text']
diff --git a/spec/unit/zero/renderer/template_finder/get_templates_spec.rb b/spec/unit/zero/renderer/template_finder/get_templates_spec.rb
new file mode 100644
index 0000000..5928e66
--- /dev/null
+++ b/spec/unit/zero/renderer/template_finder/get_templates_spec.rb
@@ -0,0 +1,65 @@
+require 'spec_helper'
+
+describe Zero::Renderer::TemplateFinder, '#initialize' do
+  subject { described_class.new(template_path, type_map) }
+  let(:template_path) { 'foo/' }
+  let(:file_list) { ['foo/welcome/index.html.erb'] }
+
+  before :each do
+    Dir.stub(:[]) do |arg|
+      if arg == 'foo/**/*.*'
+        file_list
+      else
+        []
+      end
+    end
+  end
+
+  shared_examples_for 'a template loader' do
+    it 'creates a template tree' do
+      subject.get_templates['welcome/index'].should eq(result)
+    end
+  end
+
+  context 'without mapping' do
+    let(:type_map) { {} }
+    let(:result) { { 'html' => 'foo/welcome/index.html.erb' } }
+
+    it_behaves_like 'a template loader'
+  end
+
+  context 'with a single mapping' do
+    let(:type_map) { {'html' => 'text/html' } }
+    let(:result) { { 'text/html' => 'foo/welcome/index.html.erb' } }
+
+    it_behaves_like 'a template loader'
+  end
+
+  context 'with multiple mappings' do
+    let(:type_map) { {'html' => ['text/html', 'text/xml'] } }
+    let(:result) { {
+      'text/html' => 'foo/welcome/index.html.erb',
+      'text/xml'  => 'foo/welcome/index.html.erb'
+    } }
+
+    it_behaves_like 'a template loader'
+  end
+
+  context 'with default template' do
+    let(:file_list) {['foo/welcome/index.erb']}
+    let(:type_map) { {'default' => ['text/html', 'text/xml'] } }
+    let(:result) { {
+      'text/html' => 'foo/welcome/index.erb',
+      'text/xml'  => 'foo/welcome/index.erb'
+    } }
+
+    it_behaves_like 'a template loader'
+  end
+
+  it 'creates an empty templates list without templates in path' do
+    subject = Zero::Renderer.new("bar/", {})
+    subject.read_template_path!
+
+    subject.templates.should eq({})
+  end
+end
diff --git a/spec/unit/zero/renderer/template_finder/initialize_spec.rb b/spec/unit/zero/renderer/template_finder/initialize_spec.rb
new file mode 100644
index 0000000..5ed9502
--- /dev/null
+++ b/spec/unit/zero/renderer/template_finder/initialize_spec.rb
@@ -0,0 +1,19 @@
+require 'spec_helper'
+
+describe Zero::Renderer::TemplateFinder, '#initialize' do
+  subject { described_class.new(template_path, type_map) }
+  let(:template_path) { 'foo/' }
+  let(:type_map) { {'html' => ['text/html']} }
+
+  its(:path)       { should be(template_path) }
+  its(:path_regex) { should eq(/#{template_path}/) }
+  its(:type_map)   { should be(type_map) }
+
+  context 'with broken path' do
+    let(:template_path) { 'foo' }
+
+    it "raises an error" do
+      expect { subject }.to raise_error(ArgumentError, "Has to end on '/'!")
+    end
+  end
+end