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// This file contains the unit tests for the XmlFile class.

#include "kml/base/xml_file.h"
#include "gtest/gtest.h"

namespace kmlbase {

// Derive the simplest possible class to test XmlFile.
class TestFile : public XmlFile {
 public:
  // Reflect the otherwise protected set_url out to public for unit testing.
  void set_url(const string& url) {
    XmlFile::set_url(url);
  }
  bool set_root(const XmlElementPtr& element) {
    return XmlFile::set_root(element);
  }
};
typedef boost::intrusive_ptr<TestFile> TestFilePtr;

class TestElement : public XmlElement {
 public:
  TestElement(int id) : id_(id) {}
  int get_id() const {
    return id_;
  }
 private:
  int id_;
};
typedef boost::intrusive_ptr<TestElement> TestElementPtr;

TEST(XmlFileTest, TestDefault) {
  TestFilePtr xml_file = new TestFile;
  ASSERT_TRUE(xml_file->get_url().empty());
  ASSERT_FALSE(xml_file->get_root());
}

TEST(XmlFileTest, TestSetGet) {
  const string kUrl("http://example.com");
  const int kId = 42;
  TestFilePtr xml_file = new TestFile;
  xml_file->set_url(kUrl);
  xml_file->set_root(new TestElement(kId));
  ASSERT_EQ(kUrl, xml_file->get_url());
  TestElementPtr element =
    boost::static_pointer_cast<TestElement>(xml_file->get_root());
  ASSERT_EQ(kId, element->get_id());
}

}  // end namespace kmlbase
