third_party/WebKit/LayoutTests/svg/custom/script-tests/immutable-properties.js

   1 description("Tests whether immutable properties can not be modified.");
   2
   3 var svgDoc = document.implementation.createDocument("http://www.w3.org/2000/svg", "svg", null);
   4
   5 // 'viewport' attribute is immutable (Spec: The object itself and its contents are both readonly.)
   6 var viewport = svgDoc.documentElement.viewport;
   7
   8 shouldBe("viewport.x", "0");
   9 viewport.x = 100;
  10
  11 shouldBe("viewport.x", "100");
  12 shouldBe("svgDoc.documentElement.viewport.x", "0");
  13
  14 // Every attribute of SVGZoomEvent is immutable (Spec: The object itself and its contents are both readonly.)
  15 var zoomEvent = svgDoc.createEvent("SVGZoomEvents");
  16
  17 // 'zoomRectScreen' property
  18 var zoomRectScreen = zoomEvent.zoomRectScreen;
  19
  20 shouldBe("zoomRectScreen.x", "0");
  21 shouldThrow("zoomRectScreen.x = 100;");
  22
  23 // 'previousScale' property
  24 shouldBe("zoomEvent.previousScale", "0")
  25 zoomEvent.previousScale = 200;
  26 shouldBe("zoomEvent.previousScale", "0")
  27
  28 // 'previousTranslate' property
  29 var previousTranslate = zoomEvent.previousTranslate;
  30
  31 shouldBe("previousTranslate.x", "0");
  32 shouldThrow("previousTranslate.x = 300;");
  33
  34 shouldBe("zoomEvent.previousTranslate.x", "0");
  35
  36 // 'newScale' property
  37 shouldBe("zoomEvent.newScale", "0");
  38 shouldThrow("zoomEvent.newScale = 200;");
  39 shouldBe("zoomEvent.newScale", "0");
  40
  41 // 'newTranslate' property
  42 var newTranslate = zoomEvent.newTranslate;
  43
  44 shouldBe("newTranslate.x", "0");
  45 shouldThrow("newTranslate.x = 300;");
  46 shouldBe("newTranslate.x", "0");
  47
  48 var successfullyParsed = true;