| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.flink.util; |
| |
| import org.apache.flink.api.common.typeutils.base.DoubleValueSerializer; |
| import org.apache.flink.configuration.Configuration; |
| import org.apache.flink.core.io.IOReadableWritable; |
| import org.apache.flink.core.memory.DataInputView; |
| import org.apache.flink.core.memory.DataOutputView; |
| import org.apache.flink.types.DoubleValue; |
| import org.apache.flink.types.StringValue; |
| import org.apache.flink.types.Value; |
| |
| import org.junit.Test; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.Objects; |
| import java.util.Random; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| /** |
| * Tests for the {@link InstantiationUtil}. |
| */ |
| public class InstantiationUtilTest extends TestLogger { |
| |
| @Test |
| public void testInstantiationOfStringValue() { |
| StringValue stringValue = InstantiationUtil.instantiate( |
| StringValue.class, null); |
| assertNotNull(stringValue); |
| } |
| |
| @Test |
| public void testInstantiationOfStringValueAndCastToValue() { |
| StringValue stringValue = InstantiationUtil.instantiate( |
| StringValue.class, Value.class); |
| assertNotNull(stringValue); |
| } |
| |
| @Test |
| public void testHasNullaryConstructor() { |
| assertTrue(InstantiationUtil |
| .hasPublicNullaryConstructor(StringValue.class)); |
| } |
| |
| @Test |
| public void testClassIsProper() { |
| assertTrue(InstantiationUtil.isProperClass(StringValue.class)); |
| } |
| |
| @Test |
| public void testClassIsNotProper() { |
| assertFalse(InstantiationUtil.isProperClass(Value.class)); |
| } |
| |
| @Test(expected = RuntimeException.class) |
| public void testCheckForInstantiationOfPrivateClass() { |
| InstantiationUtil.checkForInstantiation(TestClass.class); |
| } |
| |
| @Test |
| public void testSerializationToByteArray() throws IOException { |
| final DoubleValue toSerialize = new DoubleValue(Math.random()); |
| final DoubleValueSerializer serializer = new DoubleValueSerializer(); |
| |
| byte[] serialized = InstantiationUtil.serializeToByteArray(serializer, toSerialize); |
| |
| DoubleValue deserialized = InstantiationUtil.deserializeFromByteArray(serializer, serialized); |
| |
| assertEquals("Serialized record is not equal after serialization.", toSerialize, deserialized); |
| } |
| |
| @Test |
| public void testWriteToConfigFailingSerialization() { |
| try { |
| final String key1 = "testkey1"; |
| final String key2 = "testkey2"; |
| final Configuration config = new Configuration(); |
| |
| try { |
| InstantiationUtil.writeObjectToConfig(new TestClassWriteFails(), config, "irgnored"); |
| fail("should throw an exception"); |
| } |
| catch (TestException e) { |
| // expected |
| } |
| catch (Exception e) { |
| fail("Wrong exception type - exception not properly forwarded"); |
| } |
| |
| InstantiationUtil.writeObjectToConfig(new TestClassReadFails(), config, key1); |
| InstantiationUtil.writeObjectToConfig(new TestClassReadFailsCNF(), config, key2); |
| |
| try { |
| InstantiationUtil.readObjectFromConfig(config, key1, getClass().getClassLoader()); |
| fail("should throw an exception"); |
| } |
| catch (TestException e) { |
| // expected |
| } |
| catch (Exception e) { |
| fail("Wrong exception type - exception not properly forwarded"); |
| } |
| |
| try { |
| InstantiationUtil.readObjectFromConfig(config, key2, getClass().getClassLoader()); |
| fail("should throw an exception"); |
| } |
| catch (ClassNotFoundException e) { |
| // expected |
| } |
| catch (Exception e) { |
| fail("Wrong exception type - exception not properly forwarded"); |
| } |
| } |
| catch (Exception e) { |
| e.printStackTrace(); |
| fail(e.getMessage()); |
| } |
| } |
| |
| @Test |
| public void testCopyWritable() throws Exception { |
| WritableType original = new WritableType(); |
| WritableType copy = InstantiationUtil.createCopyWritable(original); |
| |
| assertTrue(original != copy); |
| assertTrue(original.equals(copy)); |
| } |
| |
| // -------------------------------------------------------------------------------------------- |
| |
| private class TestClass {} |
| |
| private static class TestException extends IOException { |
| private static final long serialVersionUID = 1L; |
| } |
| |
| private static class TestClassWriteFails implements java.io.Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private void writeObject(ObjectOutputStream out) throws IOException { |
| throw new TestException(); |
| } |
| } |
| |
| private static class TestClassReadFails implements java.io.Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { |
| throw new TestException(); |
| } |
| } |
| |
| private static class TestClassReadFailsCNF implements java.io.Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { |
| throw new ClassNotFoundException("test exception"); |
| } |
| } |
| |
| /** A simple test type. */ |
| public static final class WritableType implements IOReadableWritable { |
| |
| private int aInt; |
| private long aLong; |
| |
| public WritableType() { |
| Random rnd = new Random(); |
| this.aInt = rnd.nextInt(); |
| this.aLong = rnd.nextLong(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(aInt, aLong); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == this) { |
| return true; |
| } |
| else if (obj != null && obj.getClass() == WritableType.class) { |
| WritableType that = (WritableType) obj; |
| return this.aLong == that.aLong && this.aInt == that.aInt; |
| } |
| else { |
| return false; |
| } |
| } |
| |
| @Override |
| public void write(DataOutputView out) throws IOException { |
| out.writeInt(aInt); |
| out.writeLong(aLong); |
| } |
| |
| @Override |
| public void read(DataInputView in) throws IOException { |
| this.aInt = in.readInt(); |
| this.aLong = in.readLong(); |
| } |
| } |
| } |