var webpage = require(“webpage”),

fs = require("fs");

var html_path = fs.absolute(“test.html”); var examples = [];

function run_example(example_index) {

if (example_index >= examples.length) {
  phantom.exit(0);
  return;
}

var example = examples[example_index];
var snapshot_index = 0;
var page = webpage.create();

page.viewportSize = { width: 500, height: 300 };
page.clipRect = { width: 500, height: 300 };
page.onAlert = function (msg) {
  var e = JSON.parse(msg);
  if (e.fn == "snapshot") {
    page.render("output/" + example.name + snapshot_index + ".png");
    snapshot_index += 1;
  } else if (e.fn == "mousemove") {
    page.sendEvent("mousemove", e.x, e.y);
  }
};

page.open(html_path, function (status) {
  if (status == "fail") {
    console.log("Failed to load test page: " + example.name);
    phantom.exit(1);
  } else {
    page.evaluate(example.runner);
  }
  page.close();
  run_example(example_index + 1);
});

}

exports.def = function (name, runner) {

examples.push({ name: name, runner: runner });

};

exports.run = function () {

if (fs.isDirectory("output")) {
  fs.list("output").forEach(function (path) {
    if (path != "." && path != "..") {
      fs.remove("output/" + path);
    }
  });
} else {
  fs.makeDirectory("output");
}
run_example(0);

};