import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/client/shared/test/browser_graphs-03.js

@@ -0,0 +1,111 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that graph widgets can handle clients getting/setting the
+// selection or cursor.
+
+const LineGraphWidget = require("devtools/client/shared/widgets/LineGraphWidget");
+
+add_task(function* () {
+  yield addTab("about:blank");
+  yield performTest();
+  gBrowser.removeCurrentTab();
+});
+
+function* performTest() {
+  let [host,, doc] = yield createHost();
+  let graph = new LineGraphWidget(doc.body, "fps");
+  yield graph.once("ready");
+
+  yield testSelection(graph);
+  yield testCursor(graph);
+
+  yield graph.destroy();
+  host.destroy();
+}
+
+function* testSelection(graph) {
+  ok(graph.getSelection().start === null,
+    "The graph's selection should initially have a null start value.");
+  ok(graph.getSelection().end === null,
+    "The graph's selection should initially have a null end value.");
+  ok(!graph.hasSelection(),
+    "There shouldn't initially be any selection.");
+
+  let selected = graph.once("selecting");
+  graph.setSelection({ start: 100, end: 200 });
+
+  yield selected;
+  ok(true, "A 'selecting' event has been fired.");
+
+  ok(graph.hasSelection(),
+    "There should now be a selection.");
+  is(graph.getSelection().start, 100,
+    "The graph's selection now has an updated start value.");
+  is(graph.getSelection().end, 200,
+    "The graph's selection now has an updated end value.");
+
+  let thrown;
+  try {
+    graph.setSelection({ start: null, end: null });
+  } catch (e) {
+    thrown = true;
+  }
+  ok(thrown, "Setting a null selection shouldn't work.");
+
+  ok(graph.hasSelection(),
+    "There should still be a selection.");
+
+  let deselected = graph.once("deselecting");
+  graph.dropSelection();
+
+  yield deselected;
+  ok(true, "A 'deselecting' event has been fired.");
+
+  ok(!graph.hasSelection(),
+    "There shouldn't be any selection anymore.");
+  ok(graph.getSelection().start === null,
+    "The graph's selection now has a null start value.");
+  ok(graph.getSelection().end === null,
+    "The graph's selection now has a null end value.");
+}
+
+function* testCursor(graph) {
+  ok(graph.getCursor().x === null,
+    "The graph's cursor should initially have a null X value.");
+  ok(graph.getCursor().y === null,
+    "The graph's cursor should initially have a null Y value.");
+  ok(!graph.hasCursor(),
+    "There shouldn't initially be any cursor.");
+
+  graph.setCursor({ x: 100, y: 50 });
+
+  ok(graph.hasCursor(),
+    "There should now be a cursor.");
+  is(graph.getCursor().x, 100,
+    "The graph's cursor now has an updated start value.");
+  is(graph.getCursor().y, 50,
+    "The graph's cursor now has an updated end value.");
+
+  let thrown;
+  try {
+    graph.setCursor({ x: null, y: null });
+  } catch (e) {
+    thrown = true;
+  }
+  ok(thrown, "Setting a null cursor shouldn't work.");
+
+  ok(graph.hasCursor(),
+    "There should still be a cursor.");
+
+  graph.dropCursor();
+
+  ok(!graph.hasCursor(),
+    "There shouldn't be any cursor anymore.");
+  ok(graph.getCursor().x === null,
+    "The graph's cursor now has a null start value.");
+  ok(graph.getCursor().y === null,
+    "The graph's cursor now has a null end value.");
+}