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-rw-r--r--js/src/tests/non262/generators/pi-generator.js57
1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/non262/generators/pi-generator.js b/js/src/tests/non262/generators/pi-generator.js
new file mode 100644
index 0000000000..b5d4bf47b8
--- /dev/null
+++ b/js/src/tests/non262/generators/pi-generator.js
@@ -0,0 +1,57 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var summary = "A (slow) generator of pi";
+var actual, expect;
+
+printStatus(summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+function* pi()
+{
+ var val = 0;
+ var curr = 1;
+ var isNeg = false;
+ while (true)
+ {
+ if (isNeg)
+ yield val -= 4/curr;
+ else
+ yield val += 4/curr;
+ curr += 2;
+ isNeg = !isNeg;
+ }
+}
+
+var failed = false;
+var it = pi();
+
+var vals =
+ [4,
+ 4 - 4/3,
+ 4 - 4/3 + 4/5,
+ 4 - 4/3 + 4/5 - 4/7];
+
+try
+{
+ for (var i = 0, sz = vals.length; i < sz; i++)
+ if (it.next().value != vals[i])
+ throw vals[i];
+}
+catch (e)
+{
+ failed = e;
+}
+
+
+
+expect = false;
+actual = failed;
+
+reportCompare(expect, actual, summary);