1 files changed, 47 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 000000000..4bb70e53e
--- /dev/null
+++ b/devtools/client/netmonitor/test/browser_net_charts-06.js
@@ -0,0 +1,47 @@
+/* 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(function* () {
+  let { L10N } = require("devtools/client/netmonitor/l10n");
+
+  let { monitor } = yield initNetMonitor(SIMPLE_URL);
+  info("Starting test... ");
+
+  let { document, Chart } = monitor.panelWin;
+
+  let pie = Chart.Pie(document, {
+    data: [],
+    width: 100,
+    height: 100
+  });
+
+  let node = pie.node;
+  let slices = node.querySelectorAll(".pie-chart-slice.chart-colored-blob");
+  let 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.");
+  ok(slices[0].getAttribute("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.");
+
+  yield teardown(monitor);
+});