sabbey37 commented on a change in pull request #6296:
URL: https://github.com/apache/geode/pull/6296#discussion_r615142156
##########
File path:
geode-apis-compatible-with-redis/src/test/java/org/apache/geode/redis/internal/data/RedisHashTest.java
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@@ -258,6 +258,13 @@ public void hscanSnaphots_shouldExpireAfterExpiryPeriod() {
});
}
+ @Test
+ public void
hashSizeOverhead_shouldNotBeChanged_withoutForethoughtAndTesting() {
+ assertThat(RedisHash.PER_OBJECT_OVERHEAD).isEqualTo(8);
+
assertThat(RedisHash.getPerStringOverhead()).isEqualTo(RedisHash.PER_OBJECT_OVERHEAD
+ 46);
+
assertThat(RedisHash.getPerHashOverhead()).isEqualTo(RedisHash.PER_OBJECT_OVERHEAD
+ 116);
+ }
Review comment:
Could we do some more direct unit testing in the `RedisHashTest.java`,
maybe something like:
```
assertThat(ros.sizeof(new
RedisHash())).isEqualTo(RedisHash.getPerHashOverhead());
assertThat(ros.sizeof(new RedisHash(createListOfDataElements(1))))
.isEqualTo(RedisHash.getPerHashOverhead() +
(RedisHash.getPerStringOverhead() * 2));
```
...and something similar in `RedisStringTest.java` and `RedisSetTest.java`
...it should be noted that the above assertions currently fail though, so
maybe that's not the correct way to test it. How did we originally derive the
`PER_HASH_OVERHEAD` and `PER_STRING_OVERHEAD`? @upthewaterspout what is the
proper way to derive/test those constants?
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