The Tor Browser / file revision

 /* Any copyright is dedicated to the Public Domain.

    http://creativecommons.org/publicdomain/zero/1.0/ */

 /**

  * Tests that the source contents can be retrieved from the vertex and fragment

  * shader actors.

  */

 function ifWebGLSupported() {

   let [target, debuggee, front] = yield initBackend(SIMPLE_CANVAS_URL);

   front.setup({ reload: true });

   let programActor = yield once(front, "program-linked");

   let vertexShader = yield programActor.getVertexShader();

   let fragmentShader = yield programActor.getFragmentShader();

   let vertSource = yield vertexShader.getText();

   ok(vertSource.contains("gl_Position"),

     "The correct vertex shader source was retrieved.");

   let fragSource = yield fragmentShader.getText();

   ok(fragSource.contains("gl_FragColor"),

     "The correct fragment shader source was retrieved.");

   yield removeTab(target.tab);

   finish();

 }