1 files changed, 163 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_graphs-07e.js b/devtools/client/shared/test/browser_graphs-07e.js
new file mode 100644
index 0000000000..117126efe2
--- /dev/null
+++ b/devtools/client/shared/test/browser_graphs-07e.js
@@ -0,0 +1,163 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that selections are drawn onto the canvas.
+
+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 LineGraphWidget = require("devtools/client/shared/widgets/LineGraphWidget");
+let CURRENT_ZOOM = 1;
+
+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");
+  graph.setData(TEST_DATA);
+
+  info("Testing with normal zoom.");
+  testGraph(graph);
+
+  info("Testing while zoomed out.");
+  setZoom(host.frame, 0.5);
+  testGraph(graph);
+
+  info("Testing while zoomed in.");
+  setZoom(host.frame, 2);
+  testGraph(graph);
+
+  await graph.destroy();
+  host.destroy();
+}
+
+function testGraph(graph) {
+  graph.dropSelection();
+
+  info("Making a selection.");
+
+  dragStart(graph, 100);
+  ok(graph.hasSelectionInProgress(), "The selection should start (1).");
+  is(
+    graph.getSelection().start,
+    100,
+    "The current selection start value is correct (1)."
+  );
+  is(
+    graph.getSelection().end,
+    100,
+    "The current selection end value is correct (1)."
+  );
+
+  hover(graph, 200);
+  ok(
+    graph.hasSelectionInProgress(),
+    "The selection should still be in progress (2)."
+  );
+  is(
+    graph.getSelection().start,
+    100,
+    "The current selection start value is correct (2)."
+  );
+  is(
+    graph.getSelection().end,
+    200,
+    "The current selection end value is correct (2)."
+  );
+
+  dragStop(graph, 300);
+  ok(!graph.hasSelectionInProgress(), "The selection should have stopped (3).");
+  is(
+    graph.getSelection().start,
+    100,
+    "The current selection start value is correct (3)."
+  );
+  is(
+    graph.getSelection().end,
+    300,
+    "The current selection end value is correct (3)."
+  );
+}
+
+function setZoom(frame, zoomValue) {
+  CURRENT_ZOOM = frame.docShell.browsingContext.fullZoom = zoomValue;
+}
+
+// EventUtils just doesn't work!
+
+function dispatchEvent(graph, x, y, fn) {
+  x *= CURRENT_ZOOM;
+  y *= CURRENT_ZOOM;
+  x /= window.devicePixelRatio;
+  y /= window.devicePixelRatio;
+  const quad = graph._canvas.getBoxQuads({
+    relativeTo: window.document,
+  })[0];
+
+  const screenX = window.screenX + quad.p1.x + x;
+  const screenY = window.screenY + quad.p1.y + y;
+
+  fn({
+    screenX: screenX,
+    screenY: screenY,
+  });
+}
+
+function hover(graph, x, y = 1) {
+  dispatchEvent(graph, x, y, graph._onMouseMove);
+}
+
+function dragStart(graph, x, y = 1) {
+  dispatchEvent(graph, x, y, graph._onMouseMove);
+  dispatchEvent(graph, x, y, graph._onMouseDown);
+}
+
+function dragStop(graph, x, y = 1) {
+  dispatchEvent(graph, x, y, graph._onMouseMove);
+  dispatchEvent(graph, x, y, graph._onMouseUp);
+}