/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

// Tests that graph widgets can properly add data, regions and highlights.

const TEST_DATA = [{ delta: 112, value: 48 }, { delta: 213, value: 59 }, { delta: 313, value: 60 }, { delta: 413, value: 59 }, { delta: 530, value: 59 }, { delta: 646, value: 58 }, { delta: 747, value: 60 }, { delta: 863, value: 48 }, { delta: 980, value: 37 }, { delta: 1097, value: 30 }, { delta: 1213, value: 29 }, { delta: 1330, value: 23 }, { delta: 1430, value: 10 }, { delta: 1534, value: 17 }, { delta: 1645, value: 20 }, { delta: 1746, value: 22 }, { delta: 1846, value: 39 }, { delta: 1963, value: 26 }, { delta: 2080, value: 27 }, { delta: 2197, value: 35 }, { delta: 2312, value: 47 }, { delta: 2412, value: 53 }, { delta: 2514, value: 60 }, { delta: 2630, value: 37 }, { delta: 2730, value: 36 }, { delta: 2830, value: 37 }, { delta: 2946, value: 36 }, { delta: 3046, value: 40 }, { delta: 3163, value: 47 }, { delta: 3280, value: 41 }, { delta: 3380, value: 35 }, { delta: 3480, value: 27 }, { delta: 3580, value: 39 }, { delta: 3680, value: 42 }, { delta: 3780, value: 49 }, { delta: 3880, value: 55 }, { delta: 3980, value: 60 }, { delta: 4080, value: 60 }, { delta: 4180, value: 60 }];
const TEST_REGIONS = [{ start: 320, end: 460 }, { start: 780, end: 860 }];
let {LineGraphWidget} = Cu.import("resource:///modules/devtools/Graphs.jsm", {});
let {Promise} = devtools.require("resource://gre/modules/Promise.jsm");

add_task(function*() {
  yield promiseTab("about:blank");
  yield performTest();
  gBrowser.removeCurrentTab();
});

function* performTest() {
  let [host, win, doc] = yield createHost();
  let graph = new LineGraphWidget(doc.body, "fps");
  yield graph.once("ready");

  testDataAndRegions(graph);
  testHighlights(graph);

  graph.destroy();
  host.destroy();
}

function testDataAndRegions(graph) {
  let thrown1;
  try {
    graph.setRegions(TEST_REGIONS);
  } catch (e) {
    thrown1 = true;
  }
  ok(thrown1, "Setting regions before setting data shouldn't work.");

  graph.setData(TEST_DATA);
  graph.setRegions(TEST_REGIONS);

  let thrown2;
  try {
    graph.setRegions(TEST_REGIONS);
  } catch (e) {
    thrown2 = true;
  }
  ok(thrown2, "Setting regions twice shouldn't work.");

  ok(graph.hasData(), "The graph should now have the data source set.");
  ok(graph.hasRegions(), "The graph should now have the regions set.");

  is(graph.dataScaleX,
     graph.width / 4180, // last & first tick in TEST_DATA
    "The data scale on the X axis is correct.");

  is(graph.dataScaleY,
     graph.height / 60 * 0.85, // max value in TEST_DATA * GRAPH_DAMPEN_VALUES
    "The data scale on the Y axis is correct.");

  for (let i = 0; i < TEST_REGIONS.length; i++) {
    let original = TEST_REGIONS[i];
    let normalized = graph._regions[i];

    is(original.start * graph.dataScaleX, normalized.start,
      "The region's start value was properly normalized.");
    is(original.end * graph.dataScaleX, normalized.end,
      "The region's end value was properly normalized.");
  }
}

function testHighlights(graph) {
  graph.setMask(TEST_REGIONS);
  ok(graph.hasMask(),
    "The graph should now have the highlights set.");

  graph.setMask([]);
  ok(graph.hasMask(),
    "The graph shouldn't have anything highlighted.");

  graph.setMask(null);
  ok(!graph.hasMask(),
    "The graph should have everything highlighted.");
}
