vamossagar12 commented on a change in pull request #9508:
URL: https://github.com/apache/kafka/pull/9508#discussion_r532213896
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File path:
streams/src/test/java/org/apache/kafka/streams/state/internals/ChangeLoggingKeyValueBytesStoreTest.java
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@@ -196,6 +200,26 @@ public void shouldReturnValueOnGetWhenExists() {
assertThat(store.get(hello), equalTo(world));
}
+ @Test
+ public void shouldGetRecordsWithPrefixKey() {
+ store.put(hi, there);
+ store.put(hello, world);
+ final KeyValueIterator<Bytes, byte[]> keysWithPrefix =
store.prefixScan("h", new StringSerializer());
+ final List<String> keys = new ArrayList<>();
+ final List<String> values = new ArrayList<>();
+ int numberOfKeysReturned = 0;
+
+ while (keysWithPrefix.hasNext()) {
+ final KeyValue<Bytes, byte[]> next = keysWithPrefix.next();
+ keys.add(next.key.toString());
+ values.add(new String(next.value));
+ numberOfKeysReturned++;
+ }
+ assertThat(numberOfKeysReturned, is(2));
+ assertThat(keys, is(Arrays.asList("hello", "hi")));
+ assertThat(values, is(Arrays.asList("world", "there")));
+ }
+
Review comment:
Same comment as in `CachingInMemoryKeyValueStoreTest`
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