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Diffstat (limited to 'cadi/core/src/test/java/org/onap/ccsdk/apps/cadi/util/test/JU_Pool.java')
-rw-r--r-- | cadi/core/src/test/java/org/onap/ccsdk/apps/cadi/util/test/JU_Pool.java | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/cadi/core/src/test/java/org/onap/ccsdk/apps/cadi/util/test/JU_Pool.java b/cadi/core/src/test/java/org/onap/ccsdk/apps/cadi/util/test/JU_Pool.java new file mode 100644 index 00000000..3b15e466 --- /dev/null +++ b/cadi/core/src/test/java/org/onap/ccsdk/apps/cadi/util/test/JU_Pool.java @@ -0,0 +1,238 @@ +/******************************************************************************* + * * org.onap.ccsdk + * * =========================================================================== + * * Copyright © 2023 AT&T Intellectual Property. All rights reserved. + * * =========================================================================== + * * Licensed under the Apache License, Version 2.0 (the "License"); + * * you may not use this file except in compliance with the License. + * * You may obtain a copy of the License at + * * + * * http://www.apache.org/licenses/LICENSE-2.0 + * * + * * Unless required by applicable law or agreed to in writing, software + * * distributed under the License is distributed on an "AS IS" BASIS, + * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * * See the License for the specific language governing permissions and + * * limitations under the License. + * * ============LICENSE_END==================================================== + * * + * * + ******************************************************************************/ + +package org.onap.ccsdk.apps.cadi.util.test; + +import static org.junit.Assert.*; + +import java.util.ArrayList; +import java.util.List; + +import static org.hamcrest.CoreMatchers.*; +import org.junit.*; +import org.onap.ccsdk.apps.cadi.CadiException; +import org.onap.ccsdk.apps.cadi.util.Log; +import org.onap.ccsdk.apps.cadi.util.Pool; +import org.onap.ccsdk.apps.cadi.util.Pool.*; + +public class JU_Pool { + + private class IntegerCreator implements Creator<Integer> { + private int current = 0; + + @Override + public Integer create() { + return current++; + } + + @Override + public void destroy(Integer t) { + t = 0; + } + + @Override + public boolean isValid(Integer t) { + return (t & 0x1) == 0; + } + + @Override + public void reuse(Integer t) { + } + } + + // Used for CustomLogger Testing + private StringBuilder sb = new StringBuilder(); + + private class CustomLogger implements Log { + @Override + public void log(Log.Type type, Object... o) { + for (Object item : o) { + sb.append(item.toString()); + } + } + } + + /** + * Enter variable amount in this order + * + * count, used, max_range, max_objects + * @param intPool + * @param ints + */ + private void check(Pool<Integer> intPool, int ... ints) { + String rpt = intPool.toString(); + // Fallthrough on purpose, to process only the ints entered, but in the right order. + switch(ints.length) { + case 4: + assertTrue(rpt.contains(String.format("max_objects(%d)", ints[3]))); + case 3: + assertTrue(rpt.contains(String.format("max_range(%d)", ints[2]))); + case 2: + assertTrue(rpt.contains(String.format("used(%d)", ints[1]))); + case 1: + assertTrue(rpt.contains(String.format("count(%d)", ints[0]))); + } + } + + @Test + public void settings() throws CadiException { + Pool<Integer> intPool = new Pool<Integer>(new IntegerCreator()); + check(intPool,0,0,Pool.MAX_RANGE,Pool.MAX_OBJECTS); + + // Check MaxObjects, min is 0 + intPool.setMaxObjects(-10); + check(intPool,0,0,Pool.MAX_RANGE,0); + + intPool.setMaxObjects(10); + check(intPool,0,0,Pool.MAX_RANGE,10); + + // Check MaxRange, min is 0 + intPool.setMaxRange(-10); + check(intPool,0,0,0,10); + + intPool.setMaxRange(2); + check(intPool,0,0,2,10); + + // Validate Priming + intPool.prime(3); + check(intPool,3,3,2,10); + + // Drain + intPool.drain(); + check(intPool,0,0,2,10); + } + + @Test + public void range() throws CadiException { + Pool<Integer> intPool = new Pool<Integer>(new IntegerCreator()); + intPool.setMaxRange(2); + check(intPool,0,0,2); + + // Prime + intPool.prime(3); + check(intPool,3,3,2); + + // Using 3 leaves count (in Pool) and Used (by System) 3 + List<Pooled<Integer>> using = new ArrayList<>(); + for(int i=0;i<3;++i) { + using.add(intPool.get()); + } + check(intPool,0,3,2); + + // Using 3 more creates more Objects, and uses immediately + for(int i=0;i<3;++i) { + using.add(intPool.get()); + } + check(intPool,0,6,2); + + // Clean out all Objects in possession, but there are 6 Objects not returned yet. + intPool.drain(); + check(intPool,0,6,2); + + // Returning Objects + for(Pooled<Integer> i : using) { + i.done(); + } + + // Since Range is 2, keep only 2, and destroy the rest + check(intPool,2,2,2); + + // Shutdown (helpful for stopping Services) involves turning off range + intPool.setMaxRange(0).drain(); + check(intPool,0,0,0); + } + + @Test + public void tooManyObjects() throws CadiException { + /* + * It should be noted that "tooManyObjects" isn't enforced by the Pool, because Objects are not + * tracked (other than used) once they leave the pool. + * + * It is information that using entities, like Thread Pools, can use to limit creations of expensive objects + */ + Pool<Integer> intPool = new Pool<Integer>(new IntegerCreator()); + intPool.setMaxObjects(10).setMaxRange(2); + check(intPool,0,0,2,10); + + assertFalse(intPool.tooManyObjects()); + + // Obtain up to maxium Objects + List<Pooled<Integer>> using = new ArrayList<>(); + for(int i=0;i<10;++i) { + using.add(intPool.get()); + } + + check(intPool,0,10,2,10); + assertFalse(intPool.tooManyObjects()); + + using.add(intPool.get()); + check(intPool,0,11,2,10); + assertTrue(intPool.tooManyObjects()); + + // Returning Objects + for(Pooled<Integer> i : using) { + i.done(); + } + + // Returning Objects puts Pool back in range + check(intPool,2,2,2,10); + assertFalse(intPool.tooManyObjects()); + + } + + @Test + public void bulkTest() throws CadiException { + Pool<Integer> intPool = new Pool<Integer>(new IntegerCreator()); + + intPool.prime(10); + // Remove all of the invalid items (in this case, odd numbers) + assertFalse(intPool.validate()); + + // Make sure we got them all + assertTrue(intPool.validate()); + + // Get an item from the pool + Pooled<Integer> gotten = intPool.get(); + assertThat(gotten.content, is(0)); + + // finalize that item, then check the next one to make sure we actually purged + // the odd numbers + gotten = intPool.get(); + assertThat(gotten.content, is(2)); + + intPool.drain(); + + } + + @Test + public void loggingTest() { + Pool<Integer> intPool = new Pool<Integer>(new IntegerCreator()); + + // Log to Log.NULL for coverage + intPool.log(Log.Type.info,"Test log output"); + + intPool.setLogger(new CustomLogger()); + intPool.log(Log.Type.info,"Test log output"); + + assertThat(sb.toString(), is("Test log output")); + } + +} |