1 files changed, 71 insertions, 0 deletions
diff --git a/devtools/client/performance/test/browser_perf-overview-selection-01.js b/devtools/client/performance/test/browser_perf-overview-selection-01.js
new file mode 100644
index 000000000..b8a8d730b
--- /dev/null
+++ b/devtools/client/performance/test/browser_perf-overview-selection-01.js
@@ -0,0 +1,71 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+/**
+ * Tests that events are fired from selection manipulation.
+ */
+
+const { SIMPLE_URL } = require("devtools/client/performance/test/helpers/urls");
+const { initPerformanceInNewTab, teardownToolboxAndRemoveTab } = require("devtools/client/performance/test/helpers/panel-utils");
+const { startRecording, stopRecording } = require("devtools/client/performance/test/helpers/actions");
+const { once } = require("devtools/client/performance/test/helpers/event-utils");
+const { dragStartCanvasGraph, dragStopCanvasGraph, clickCanvasGraph } = require("devtools/client/performance/test/helpers/input-utils");
+
+add_task(function* () {
+  let { panel } = yield initPerformanceInNewTab({
+    url: SIMPLE_URL,
+    win: window
+  });
+
+  let { EVENTS, PerformanceController, OverviewView } = panel.panelWin;
+
+  yield startRecording(panel);
+  yield stopRecording(panel);
+
+  let duration = PerformanceController.getCurrentRecording().getDuration();
+  let graph = OverviewView.graphs.get("timeline");
+
+  // Select the first half of the graph.
+
+  let rangeSelected = once(OverviewView, EVENTS.UI_OVERVIEW_RANGE_SELECTED,
+                           { spreadArgs: true });
+  dragStartCanvasGraph(graph, { x: 0 });
+  let [, { startTime, endTime }] = yield rangeSelected;
+  is(endTime, duration, "The selected range is the entire graph, for now.");
+
+  rangeSelected = once(OverviewView, EVENTS.UI_OVERVIEW_RANGE_SELECTED,
+                       { spreadArgs: true });
+  dragStopCanvasGraph(graph, { x: graph.width / 2 });
+  [, { startTime, endTime }] = yield rangeSelected;
+  is(endTime, duration / 2, "The selected range is half of the graph.");
+
+  is(graph.hasSelection(), true,
+    "A selection exists on the graph.");
+  is(startTime, 0,
+    "The UI_OVERVIEW_RANGE_SELECTED event fired with 0 as a `startTime`.");
+  is(endTime, duration / 2,
+    `The UI_OVERVIEW_RANGE_SELECTED event fired with ${duration / 2} as \`endTime\`.`);
+
+  let mapStart = () => 0;
+  let mapEnd = () => duration;
+  let actual = graph.getMappedSelection({ mapStart, mapEnd });
+  is(actual.min, 0, "Graph selection starts at 0.");
+  is(actual.max, duration / 2, `Graph selection ends at ${duration / 2}.`);
+
+  // Listen to deselection.
+
+  rangeSelected = once(OverviewView, EVENTS.UI_OVERVIEW_RANGE_SELECTED,
+                       { spreadArgs: true });
+  clickCanvasGraph(graph, { x: 3 * graph.width / 4 });
+  [, { startTime, endTime }] = yield rangeSelected;
+
+  is(graph.hasSelection(), false,
+    "A selection no longer on the graph.");
+  is(startTime, 0,
+    "The UI_OVERVIEW_RANGE_SELECTED event fired with 0 as a `startTime`.");
+  is(endTime, duration,
+    "The UI_OVERVIEW_RANGE_SELECTED event fired with duration as `endTime`.");
+
+  yield teardownToolboxAndRemoveTab(panel);
+});