@qooxdoo/framework/source/class/qx/test/util/DynamicScriptLoader.js

The JS Framework for Coders

/* ************************************************************************

   qooxdoo - the new era of web development

   http://qooxdoo.org

   Copyright:
     2016 Visionet GmbH, http://www.visionet.de
     2016 OETIKER+PARTNER AG, https://www.oetiker.ch

   License:
     MIT: https://opensource.org/licenses/MIT
     See the LICENSE file in the project's top-level directory for details.

   Authors:
     * Dietrich Streifert (level420)
     * Tobias Oetiker (oetiker)

************************************************************************ */

/* ************************************************************************
 ************************************************************************ */
/**
 *
 * @asset(qx/test/dynamicscriptloader/*)
 *
 * @ignore(qx.test.DYNAMICSCRIPTTEST.*)
 * @ignore(qx.dynamicScriptLoadTest.*)
 */

qx.Class.define("qx.test.util.DynamicScriptLoader", {
  extend: qx.dev.unit.TestCase,

  members: {
    setUp() {
      if (qx.test.DYNAMICSCRIPTTEST) {
        delete qx.test.DYNAMICSCRIPTTEST;
      }
    },

    tearDown() {
      if (qx.test.DYNAMICSCRIPTTEST) {
        delete qx.test.DYNAMICSCRIPTTEST;
      }
    },

    "test 1: dynamic parallel loading"() {
      var l1 = new qx.util.DynamicScriptLoader([
        "qx/test/dynamicscriptloader/first.js",
        "qx/test/dynamicscriptloader/second.js",
        "qx/test/dynamicscriptloader/third.js"
      ]);

      var l2 = new qx.util.DynamicScriptLoader([
        "qx/test/dynamicscriptloader/first.js",
        "qx/test/dynamicscriptloader/second.js"
      ]);

      var l1Ready = false;
      var l2Ready = false;
      l1.addListenerOnce("ready", () => {
        l1Ready = true;
        this.resume(function () {
          this.assertTrue(l1Ready && l2Ready);
          this.assertEquals(
            qx.test.DYNAMICSCRIPTTEST.second.third,
            "dynamically loaded"
          );
        }, this);
      });

      l2.addListenerOnce("ready", () => {
        l2Ready = true;
        this.assertTrue(!l1Ready && l2Ready);
      });

      l1.start();
      l2.start();
      this.wait();
    },

    "test 2: do not load again"() {
      var loader = new qx.util.DynamicScriptLoader([
        "qx/test/dynamicscriptloader/first.js",
        "qx/test/dynamicscriptloader/second.js",
        "qx/test/dynamicscriptloader/third.js"
      ]);

      var noEvent = true;
      var checkId = loader.addListener("loaded", function (e) {
        if (e.getData().status !== "preloaded") {
          noEvent = false;
        }
      });
      loader.addListenerOnce("ready", () => {
        this.assertTrue(noEvent);
      });

      loader.start();
    },
    "test 3: fail to load"() {
      var loader = new qx.util.DynamicScriptLoader([
        "qx/test/dynamicscriptloader/xyc.js"
      ]);

      loader.addListenerOnce("failed", e => {
        var data = e.getData();
        this.resume(function () {
          this.assertEquals(data.script, "qx/test/dynamicscriptloader/xyc.js");
        }, this);
      });

      loader.start();
      this.wait();
    },
    "test 4: double start"() {
      var loader = new qx.util.DynamicScriptLoader(
        "qx/test/dynamicscriptloader/first.js"
      );

      loader.start();
      try {
        loader.start();
      } catch (e) {
        this.assertEquals(
          e.message,
          "you can only call start once per instance"
        );
      }
    }
  }
});