Github user keith-turner commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/145#discussion_r77282647
--- Diff:
core/src/test/java/org/apache/accumulo/core/data/KeyBuilderTest.java ---
@@ -0,0 +1,282 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
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+ * The ASF licenses this file to You under the Apache License, Version 2.0
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+package org.apache.accumulo.core.data;
+
+import org.apache.hadoop.io.Text;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class KeyBuilderTest {
--- End diff --
Nice test. Very thorough. I tried running code coverage and everything in
key builder was covered.
I think it would be useful to test the following. This ensures that the
behavior of calling timestamp multiple times is well defined going forward and
does not change to take the first.
```java
k = Key.builder().row("r").timestamp(44).timestamp(99).build();
assertEquals(new Key("r","","",99l), k);
```
It would be nice to test that all builder methods fail fast when passed
null. I think they all will at the moment. Want to avoid the case where
null passed to earlier method causes failure in `build()` method and user does
not know if the row, family, or qualifier was null.
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