1 files changed, 62 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/test/browser_net_charts-06.js b/devtools/client/netmonitor/test/browser_net_charts-06.js
new file mode 100644
index 0000000000..a41e997873
--- /dev/null
+++ b/devtools/client/netmonitor/test/browser_net_charts-06.js
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/**
+ * Makes sure Pie Charts correctly handle empty source data.
+ */
+
+add_task(async function () {
+  const {
+    L10N,
+  } = require("resource://devtools/client/netmonitor/src/utils/l10n.js");
+
+  const { monitor } = await initNetMonitor(HTTPS_SIMPLE_URL, {
+    requestCount: 1,
+  });
+  info("Starting test... ");
+
+  const { document, windowRequire } = monitor.panelWin;
+  const { Chart } = windowRequire("devtools/client/shared/widgets/Chart");
+
+  const wait = waitForNetworkEvents(monitor, 1);
+  await navigateTo(HTTPS_SIMPLE_URL);
+  await wait;
+
+  const pie = Chart.Pie(document, {
+    data: [],
+    width: 100,
+    height: 100,
+  });
+
+  const { node } = pie;
+  const slices = node.querySelectorAll(".pie-chart-slice");
+  const labels = node.querySelectorAll(".pie-chart-label");
+
+  is(slices.length, 1, "There should be 1 pie chart slice created.");
+  ok(
+    slices[0]
+      .getAttribute("d")
+      .match(
+        /\s*M 50,50 L 50\.\d+,2\.5\d* A 47\.5,47\.5 0 1 1 49\.\d+,2\.5\d* Z/
+      ),
+    "The slice has the correct data."
+  );
+
+  ok(slices[0].hasAttribute("largest"), "The slice should be the largest one.");
+  ok(
+    slices[0].hasAttribute("smallest"),
+    "The slice should also be the smallest one."
+  );
+  is(
+    slices[0].getAttribute("data-statistic-name"),
+    L10N.getStr("pieChart.unavailable"),
+    "The slice's name is correct."
+  );
+
+  is(labels.length, 1, "There should be 1 pie chart label created.");
+  is(labels[0].textContent, "Empty", "The label's text is correct.");
+
+  await teardown(monitor);
+});