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

"use strict";

// Tests that graph widgets can correctly compare selections and cursors.

const LineGraphWidget = require("devtools/client/shared/widgets/LineGraphWidget");

add_task(async function() {
  await addTab("about:blank");
  await performTest();
  gBrowser.removeCurrentTab();
});

async function performTest() {
  const { host, doc } = await createHost();
  const graph = new LineGraphWidget(doc.body, "fps");
  await graph.once("ready");

  testGraph(graph);

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

function testGraph(graph) {
  ok(!graph.hasSelection(), "There shouldn't initially be any selection.");
  is(
    graph.getSelectionWidth(),
    0,
    "The selection width should be 0 when there's no selection."
  );

  graph.setSelection({ start: 100, end: 200 });

  ok(graph.hasSelection(), "There should now be a selection.");
  is(graph.getSelectionWidth(), 100, "The selection width should now be 100.");

  ok(
    graph.isSelectionDifferent({ start: 100, end: 201 }),
    "The selection was correctly reported to be different (1)."
  );
  ok(
    graph.isSelectionDifferent({ start: 101, end: 200 }),
    "The selection was correctly reported to be different (2)."
  );
  ok(
    graph.isSelectionDifferent({ start: null, end: null }),
    "The selection was correctly reported to be different (3)."
  );
  ok(
    graph.isSelectionDifferent(null),
    "The selection was correctly reported to be different (4)."
  );

  ok(
    !graph.isSelectionDifferent({ start: 100, end: 200 }),
    "The selection was incorrectly reported to be different (1)."
  );
  ok(
    !graph.isSelectionDifferent(graph.getSelection()),
    "The selection was incorrectly reported to be different (2)."
  );

  graph.setCursor({ x: 100, y: 50 });

  ok(
    graph.isCursorDifferent({ x: 100, y: 51 }),
    "The cursor was correctly reported to be different (1)."
  );
  ok(
    graph.isCursorDifferent({ x: 101, y: 50 }),
    "The cursor was correctly reported to be different (2)."
  );
  ok(
    graph.isCursorDifferent({ x: null, y: null }),
    "The cursor was correctly reported to be different (3)."
  );
  ok(
    graph.isCursorDifferent(null),
    "The cursor was correctly reported to be different (4)."
  );

  ok(
    !graph.isCursorDifferent({ x: 100, y: 50 }),
    "The cursor was incorrectly reported to be different (1)."
  );
  ok(
    !graph.isCursorDifferent(graph.getCursor()),
    "The cursor was incorrectly reported to be different (2)."
  );
}