1 files changed, 136 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_graphs-14.js b/devtools/client/shared/test/browser_graphs-14.js
new file mode 100644
index 0000000000..8783bf5fb0
--- /dev/null
+++ b/devtools/client/shared/test/browser_graphs-14.js
@@ -0,0 +1,136 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that graph widgets correctly emit mouse input events.
+
+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");
+
+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 testGraph(graph);
+
+  await graph.destroy();
+  host.destroy();
+}
+
+async function testGraph(graph) {
+  let mouseDownEvents = 0;
+  let mouseUpEvents = 0;
+  let scrollEvents = 0;
+  graph.on("mousedown", () => mouseDownEvents++);
+  graph.on("mouseup", () => mouseUpEvents++);
+  graph.on("scroll", () => scrollEvents++);
+
+  await graph.setDataWhenReady(TEST_DATA);
+
+  info("Making a selection.");
+
+  dragStart(graph, 300);
+  dragStop(graph, 500);
+  is(
+    graph.getSelection().start,
+    300,
+    "The current selection start value is correct (1)."
+  );
+  is(
+    graph.getSelection().end,
+    500,
+    "The current selection end value is correct (1)."
+  );
+
+  is(mouseDownEvents, 1, "One mousedown event should have been fired.");
+  is(mouseUpEvents, 1, "One mouseup event should have been fired.");
+  is(scrollEvents, 0, "No scroll event should have been fired.");
+
+  info("Zooming in by scrolling inside the selection.");
+
+  scroll(graph, -1000, 400);
+  is(
+    graph.getSelection().start,
+    375,
+    "The current selection start value is correct (2)."
+  );
+  is(
+    graph.getSelection().end,
+    425,
+    "The current selection end value is correct (2)."
+  );
+
+  is(mouseDownEvents, 1, "No more mousedown events should have been fired.");
+  is(mouseUpEvents, 1, "No more mouseup events should have been fired.");
+  is(scrollEvents, 1, "One scroll event should have been fired.");
+}
+
+// EventUtils just doesn't work!
+
+function dragStart(graph, x, y = 1) {
+  x /= window.devicePixelRatio;
+  y /= window.devicePixelRatio;
+  graph._onMouseMove({ testX: x, testY: y });
+  graph._onMouseDown({ testX: x, testY: y });
+}
+
+function dragStop(graph, x, y = 1) {
+  x /= window.devicePixelRatio;
+  y /= window.devicePixelRatio;
+  graph._onMouseMove({ testX: x, testY: y });
+  graph._onMouseUp({ testX: x, testY: y });
+}
+
+function scroll(graph, wheel, x, y = 1) {
+  x /= window.devicePixelRatio;
+  y /= window.devicePixelRatio;
+  graph._onMouseMove({ testX: x, testY: y });
+  graph._onMouseWheel({ testX: x, testY: y, detail: wheel });
+}