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ConnectionProviderTest.java
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ConnectionProviderTest.java
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/*
* Copyright (c) 2021-2022 VMware, Inc. or its affiliates, 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
*
* https://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.
*/
package reactor.netty.resources;
import org.junit.jupiter.api.Test;
import reactor.core.Disposable;
import reactor.netty.Connection;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.time.Duration;
import java.util.Collections;
import java.util.Map;
import java.util.function.BiFunction;
import java.util.function.BiPredicate;
import java.util.function.Supplier;
import static org.assertj.core.api.Assertions.assertThat;
class ConnectionProviderTest {
static final TestAllocationStrategy TEST_ALLOCATION_STRATEGY = new TestAllocationStrategy();
static final String TEST_STRING = "";
static final Supplier<ConnectionProvider.MeterRegistrar> TEST_SUPPLIER = () -> (a, b, c, d) -> {};
static final BiFunction<Runnable, Duration, Disposable> TEST_BI_FUNCTION = (r, duration) -> () -> {};
static final BiPredicate<Connection, ConnectionProvider.ConnectionMetadata> TEST_BI_PREDICATE = (conn, meta) -> true;
@Test
void testBuilderCopyConstructor() throws IllegalAccessException {
ConnectionProvider.Builder original = ConnectionProvider.builder("testBuilderCopyConstructor");
init(original, original.getClass().getDeclaredFields());
init(original, original.getClass().getSuperclass().getDeclaredFields());
ConnectionProvider.Builder copy = new ConnectionProvider.Builder(original);
assertThat(copy).usingRecursiveComparison().isEqualTo(original);
}
static void init(ConnectionProvider.Builder builder, Field[] fields) throws IllegalAccessException {
for (Field field : fields) {
int modifier = field.getModifiers();
if (!(Modifier.isStatic(modifier) || Modifier.isVolatile(modifier))) {
modifyField(builder, field);
}
}
}
static void modifyField(ConnectionProvider.Builder builder, Field field) throws IllegalAccessException {
field.setAccessible(true);
Class<?> clazz = field.getType();
if (String.class == clazz) {
field.set(builder, TEST_STRING);
}
else if (Duration.class == clazz) {
field.set(builder, Duration.ZERO);
}
else if (Map.class == clazz) {
field.set(builder, Collections.EMPTY_MAP);
}
else if (Supplier.class == clazz) {
field.set(builder, TEST_SUPPLIER);
}
else if (ConnectionProvider.AllocationStrategy.class == clazz) {
field.set(builder, TEST_ALLOCATION_STRATEGY);
}
else if (boolean.class == clazz) {
field.setBoolean(builder, true);
}
else if (int.class == clazz) {
field.setInt(builder, 1);
}
else if (BiFunction.class == clazz) {
field.set(builder, TEST_BI_FUNCTION);
}
else if (BiPredicate.class == clazz) {
field.set(builder, TEST_BI_PREDICATE);
}
else {
throw new IllegalArgumentException("Unknown field type " + clazz);
}
}
static final class TestAllocationStrategy implements ConnectionProvider.AllocationStrategy<TestAllocationStrategy> {
@Override
public TestAllocationStrategy copy() {
return this;
}
@Override
public int estimatePermitCount() {
return 0;
}
@Override
public int getPermits(int desired) {
return 0;
}
@Override
public int permitGranted() {
return 0;
}
@Override
public int permitMinimum() {
return 0;
}
@Override
public int permitMaximum() {
return 0;
}
@Override
public void returnPermits(int returned) {
}
}
}