1 files changed, 240 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_graphs-05.js b/devtools/client/shared/test/browser_graphs-05.js
new file mode 100644
index 0000000000..416f6470bd
--- /dev/null
+++ b/devtools/client/shared/test/browser_graphs-05.js
@@ -0,0 +1,240 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that graph widgets can correctly determine which regions are hovered.
+
+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 },
+];
+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.getHoveredRegion(),
+    "There should be no hovered region yet because there's no regions."
+  );
+
+  ok(
+    !graph._isHoveringStartBoundary(),
+    "The graph start boundary should not be hovered."
+  );
+  ok(
+    !graph._isHoveringEndBoundary(),
+    "The graph end boundary should not be hovered."
+  );
+  ok(
+    !graph._isHoveringSelectionContents(),
+    "The graph contents should not be hovered."
+  );
+  ok(
+    !graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should not be hovered."
+  );
+
+  graph.setData(TEST_DATA);
+  graph.setRegions(TEST_REGIONS);
+
+  ok(
+    !graph.getHoveredRegion(),
+    "There should be no hovered region yet because there's no cursor."
+  );
+
+  graph.setCursor({ x: TEST_REGIONS[0].start * graph.dataScaleX - 1, y: 0 });
+  ok(!graph.getHoveredRegion(), "There shouldn't be any hovered region yet.");
+
+  graph.setCursor({ x: TEST_REGIONS[0].start * graph.dataScaleX + 1, y: 0 });
+  ok(graph.getHoveredRegion(), "There should be a hovered region now.");
+  is(
+    graph.getHoveredRegion().start,
+    320 * graph.dataScaleX,
+    "The reported hovered region is correct (1)."
+  );
+  is(
+    graph.getHoveredRegion().end,
+    460 * graph.dataScaleX,
+    "The reported hovered region is correct (2)."
+  );
+
+  graph.setSelection({ start: 100, end: 200 });
+
+  info("Setting cursor over the left boundary.");
+  graph.setCursor({ x: 100, y: 0 });
+
+  ok(
+    graph._isHoveringStartBoundary(),
+    "The graph start boundary should be hovered."
+  );
+  ok(
+    !graph._isHoveringEndBoundary(),
+    "The graph end boundary should not be hovered."
+  );
+  ok(
+    !graph._isHoveringSelectionContents(),
+    "The graph contents should not be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should be hovered."
+  );
+
+  info("Setting cursor near the left boundary.");
+  graph.setCursor({ x: 105, y: 0 });
+
+  ok(
+    graph._isHoveringStartBoundary(),
+    "The graph start boundary should be hovered."
+  );
+  ok(
+    !graph._isHoveringEndBoundary(),
+    "The graph end boundary should not be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContents(),
+    "The graph contents should be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should be hovered."
+  );
+
+  info("Setting cursor over the selection.");
+  graph.setCursor({ x: 150, y: 0 });
+
+  ok(
+    !graph._isHoveringStartBoundary(),
+    "The graph start boundary should not be hovered."
+  );
+  ok(
+    !graph._isHoveringEndBoundary(),
+    "The graph end boundary should not be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContents(),
+    "The graph contents should be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should be hovered."
+  );
+
+  info("Setting cursor near the right boundary.");
+  graph.setCursor({ x: 195, y: 0 });
+
+  ok(
+    !graph._isHoveringStartBoundary(),
+    "The graph start boundary should not be hovered."
+  );
+  ok(
+    graph._isHoveringEndBoundary(),
+    "The graph end boundary should be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContents(),
+    "The graph contents should be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should be hovered."
+  );
+
+  info("Setting cursor over the right boundary.");
+  graph.setCursor({ x: 200, y: 0 });
+
+  ok(
+    !graph._isHoveringStartBoundary(),
+    "The graph start boundary should not be hovered."
+  );
+  ok(
+    graph._isHoveringEndBoundary(),
+    "The graph end boundary should be hovered."
+  );
+  ok(
+    !graph._isHoveringSelectionContents(),
+    "The graph contents should not be hovered."
+  );
+  ok(
+    graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should be hovered."
+  );
+
+  info("Setting away from the selection.");
+  graph.setCursor({ x: 300, y: 0 });
+
+  ok(
+    !graph._isHoveringStartBoundary(),
+    "The graph start boundary should not be hovered."
+  );
+  ok(
+    !graph._isHoveringEndBoundary(),
+    "The graph end boundary should not be hovered."
+  );
+  ok(
+    !graph._isHoveringSelectionContents(),
+    "The graph contents should not be hovered."
+  );
+  ok(
+    !graph._isHoveringSelectionContentsOrBoundaries(),
+    "The graph contents or boundaries should not be hovered."
+  );
+}