From 54f0355ea90473bf55cec0d59ef5fef6fa0b6bf9 Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Tue, 8 Jul 2014 09:40:06 +0200
Subject: [PATCH] Basic specs for XPath::Evaluator.

These currently only cover very simple XPath expressions.
---
 spec/oga/xpath/evaluator/paths_spec.rb | 65 ++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 spec/oga/xpath/evaluator/paths_spec.rb

diff --git a/spec/oga/xpath/evaluator/paths_spec.rb b/spec/oga/xpath/evaluator/paths_spec.rb
new file mode 100644
index 0000000..6873371
--- /dev/null
+++ b/spec/oga/xpath/evaluator/paths_spec.rb
@@ -0,0 +1,65 @@
+require 'spec_helper'
+
+describe Oga::XPath::Evaluator do
+  before do
+    @document  = parse('<a><b></b><b></b></a>')
+    @evaluator = described_class.new(@document)
+  end
+
+  context 'absolute paths' do
+    before do
+      @set = @evaluator.evaluate('/a')
+    end
+
+    example 'return a NodeSet instance' do
+      @set.is_a?(Oga::XML::NodeSet).should == true
+    end
+
+    example 'return the right amount of nodes' do
+      @set.length.should == 1
+    end
+
+    example 'return the correct nodes' do
+      @set[0].should == @document.children[0]
+    end
+  end
+
+  context 'relative paths' do
+    before do
+      @set = @evaluator.evaluate('a')
+    end
+
+    example 'return a NodeSet instance' do
+      @set.is_a?(Oga::XML::NodeSet).should == true
+    end
+
+    example 'return the right amount of nodes' do
+      @set.length.should == 1
+    end
+
+    example 'return the correct nodes' do
+      @set[0].should == @document.children[0]
+    end
+  end
+
+  context 'nested paths' do
+    before do
+      @set = @evaluator.evaluate('/a/b')
+    end
+
+    example 'return a NodeSet instance' do
+      @set.is_a?(Oga::XML::NodeSet).should == true
+    end
+
+    example 'return the right amount of rows' do
+      @set.length.should == 2
+    end
+
+    example 'return the correct nodes' do
+      a = @document.children[0]
+
+      @set[0].should == a.children[0]
+      @set[1].should == a.children[1]
+    end
+  end
+end