From 1f3b4cb2fb1b4f9f2b272a5e3d4363158a28a19b Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Tue, 4 Nov 2014 23:33:42 +0100
Subject: [PATCH] Added initial CSS evaluation tests.

---
 spec/oga/css/evaluator/paths_spec.rb | 127 +++++++++++++++++++++++++++
 spec/spec_helper.rb                  |   3 +
 spec/support/evaluation.rb           |  16 ++++
 3 files changed, 146 insertions(+)
 create mode 100644 spec/oga/css/evaluator/paths_spec.rb
 create mode 100644 spec/support/evaluation.rb

diff --git a/spec/oga/css/evaluator/paths_spec.rb b/spec/oga/css/evaluator/paths_spec.rb
new file mode 100644
index 0000000..2174d01
--- /dev/null
+++ b/spec/oga/css/evaluator/paths_spec.rb
@@ -0,0 +1,127 @@
+require 'spec_helper'
+
+describe 'CSS selector evaluation' do
+  before do
+    @document = parse('<a xmlns:ns1="x"><b></b><b></b><ns1:c></ns1:c></a>')
+  end
+
+  context 'regular paths' do
+    before do
+      @set = evaluate_css(@document, 'a')
+    end
+
+    it_behaves_like :node_set, :length => 1
+
+    example 'return the <a> node' do
+      @set[0].should == @document.children[0]
+    end
+  end
+
+  context 'nested paths' do
+    before do
+      @set = evaluate_css(@document, 'a b')
+    end
+
+    it_behaves_like :node_set, :length => 2
+
+    example 'include the first <b> node' do
+      @set[0].should == @document.children[0].children[0]
+    end
+
+    example 'include the second <b> node' do
+      @set[1].should == @document.children[0].children[1]
+    end
+  end
+
+  context 'paths with namespaces' do
+    before do
+      @set = evaluate_css(@document, 'a ns1|c')
+    end
+
+    it_behaves_like :node_set, :length => 1
+
+    example 'include the <n1:c> node' do
+      @set[0].should == @document.children[0].children[2]
+    end
+  end
+
+  context 'paths with name wildcards' do
+    before do
+      @set = evaluate_css(@document, 'a *')
+    end
+
+    it_behaves_like :node_set, :length => 3
+
+    example 'include the first <b> node' do
+      @set[0].should == @document.children[0].children[0]
+    end
+
+    example 'include the second <b> node' do
+      @set[1].should == @document.children[0].children[1]
+    end
+
+    example 'include the second <ns1:c> node' do
+      @set[2].should == @document.children[0].children[2]
+    end
+  end
+
+  context 'paths with namespace wildcards' do
+    before do
+      @set = evaluate_css(@document, 'a *|c')
+    end
+
+    it_behaves_like :node_set, :length => 1
+
+    example 'include the <ns1:c> node' do
+      @set[0].should == @document.children[0].children[2]
+    end
+  end
+
+  context 'paths with namespaces and name wildcards' do
+    before do
+      @set = evaluate_css(@document, 'a ns1|*')
+    end
+
+    it_behaves_like :node_set, :length => 1
+
+    example 'include the <ns1:c> node' do
+      @set[0].should == @document.children[0].children[2]
+    end
+  end
+
+  context 'paths with full wildcards' do
+    before do
+      @set = evaluate_css(@document, 'a *|*')
+    end
+
+    it_behaves_like :node_set, :length => 3
+
+    example 'include the first <b> node' do
+      @set[0].should == @document.children[0].children[0]
+    end
+
+    example 'include the second <b> node' do
+      @set[1].should == @document.children[0].children[1]
+    end
+
+    example 'include the second <ns1:c> node' do
+      @set[2].should == @document.children[0].children[2]
+    end
+  end
+
+  context 'paths without namespaces and with name wildcards' do
+    before do
+      @set = evaluate_css(@document, 'a |*')
+    end
+
+    it_behaves_like :node_set, :length => 2
+
+    example 'include the first <b> node' do
+      @set[0].should == @document.children[0].children[0]
+    end
+
+    example 'include the second <b> node' do
+      @set[1].should == @document.children[0].children[1]
+    end
+  end
+end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index f54dabd..fa88d15 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -7,11 +7,14 @@ end
 
 require_relative '../lib/oga'
 require_relative 'support/parsing'
+require_relative 'support/evaluation'
 require_relative 'support/shared_examples'
 
 RSpec.configure do |config|
   config.color = true
+
   config.include Oga::ParsingHelpers
+  config.include Oga::EvaluationHelpers
 
   config.expect_with :rspec do |c|
     c.syntax = [:should, :expect]
diff --git a/spec/support/evaluation.rb b/spec/support/evaluation.rb
new file mode 100644
index 0000000..8afe164
--- /dev/null
+++ b/spec/support/evaluation.rb
@@ -0,0 +1,16 @@
+module Oga
+  module EvaluationHelpers
+    ##
+    # Parses and evaluates a CSS expression.
+    #
+    # @param [Oga::XML::Document] document
+    # @param [String] css
+    # @return [Oga::XML::NodeSet]
+    #
+    def evaluate_css(document, css)
+      xpath = parse_css(css)
+
+      return Oga::XPath::Evaluator.new(document).evaluate_ast(xpath)
+    end
+  end # EvaluationHelpers
+end # Oga