1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/non262/Date/time-components-negative-zero.js b/js/src/tests/non262/Date/time-components-negative-zero.js
new file mode 100644
index 0000000000..511dcc9fe4
--- /dev/null
+++ b/js/src/tests/non262/Date/time-components-negative-zero.js
@@ -0,0 +1,18 @@
+// Don't return negative zero for get[Hours,Minutes,Seconds,Milliseconds] for dates before 1970.
+
+let date = new Date(1955, 0, 1);
+assertEq(date.getTime() < 0, true);
+assertEq(date.getHours(), +0);
+assertEq(date.getMinutes(), +0);
+assertEq(date.getSeconds(), +0);
+assertEq(date.getMilliseconds(), +0);
+
+let utc = new Date(Date.UTC(1955, 0, 1));
+assertEq(utc.getTime() < 0, true);
+assertEq(utc.getUTCHours(), +0);
+assertEq(utc.getUTCMinutes(), +0);
+assertEq(utc.getUTCSeconds(), +0);
+assertEq(utc.getUTCMilliseconds(), +0);
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);