test/java/time/tck/java/time/TCKInstant.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -636,10 +636,16 @@
                 {Instant.ofEpochSecond(86400 + 3600 + 60 + 1, 123_456_789), DAYS, Instant.ofEpochSecond(86400, 0)},
 
                 {Instant.ofEpochSecond(86400 + 3600 + 60 + 1, 123_456_789), NINETY_MINS, Instant.ofEpochSecond(86400 + 0, 0)},
                 {Instant.ofEpochSecond(86400 + 7200 + 60 + 1, 123_456_789), NINETY_MINS, Instant.ofEpochSecond(86400 + 5400, 0)},
                 {Instant.ofEpochSecond(86400 + 10800 + 60 + 1, 123_456_789), NINETY_MINS, Instant.ofEpochSecond(86400 + 10800, 0)},
+
+                {Instant.ofEpochSecond(-86400 - 3600 - 60 - 1, 123_456_789), MINUTES, Instant.ofEpochSecond(-86400 - 3600 - 120, 0 )},
+                {Instant.ofEpochSecond(-86400 - 3600 - 60 - 1, 123_456_789), MICROS, Instant.ofEpochSecond(-86400 - 3600 - 60 - 1, 123_456_000)},
+
+                {Instant.ofEpochSecond(86400 + 3600 + 60 + 1, 0), SECONDS, Instant.ofEpochSecond(86400 + 3600 + 60 + 1, 0)}, 
+                {Instant.ofEpochSecond(-86400 - 3600 - 120, 0), MINUTES, Instant.ofEpochSecond(-86400 - 3600 - 120, 0)},
         };
     }
     @Test(dataProvider="truncatedToValid")
     public void test_truncatedTo_valid(Instant input, TemporalUnit unit, Instant expected) {
         assertEquals(input.truncatedTo(unit), expected);