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/*
* 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.commons.io.function;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.io.Closeable;
import java.io.IOException;
import java.io.StringReader;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.util.Arrays;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicReference;
import java.util.stream.Stream;
import org.apache.commons.io.IOExceptionList;
import org.apache.commons.io.IOUtils;
import org.apache.commons.io.file.PathUtils;
import org.apache.commons.io.test.ThrowOnCloseReader;
import org.junit.jupiter.api.Test;
/**
* Tests {@link IOConsumer}.
*/
public class IOConsumerTest {
@Test
void testAccept() throws IOException {
IOConsumer.noop().accept(null);
IOConsumer.noop().accept(".");
Uncheck.accept(Files::size, PathUtils.current());
//
final AtomicReference<String> ref = new AtomicReference<>();
final IOConsumer<String> consumer = s -> ref.set(s + "1");
consumer.accept("A");
assertEquals("A1", ref.get());
}
@Test
void testAndThen() throws IOException {
final AtomicReference<String> ref = new AtomicReference<>();
final IOConsumer<String> consumer1 = s -> ref.set(s + "1");
final IOConsumer<String> consumer2 = s -> ref.set(ref.get() + "2" + s);
consumer1.andThen(consumer2).accept("B");
assertEquals("B12B", ref.get());
}
@Test
public void testAsConsumer() {
assertThrows(UncheckedIOException.class, () -> Optional.of("a").ifPresent(TestUtils.throwingIOConsumer().asConsumer()));
final AtomicReference<String> ref = new AtomicReference<>();
final IOConsumer<String> consumer1 = s -> ref.set(s + "1");
Optional.of("a").ifPresent(consumer1.asConsumer());
assertEquals("a1", ref.get());
}
@Test
public void testForAllArrayOf1() throws IOException {
IOConsumer.forAll(TestUtils.throwingIOConsumer(), (String[]) null);
IOConsumer.forAll(null, (String[]) null);
assertThrows(IOExceptionList.class, () -> IOConsumer.forAll(TestUtils.throwingIOConsumer(), new String[] {"1"}));
//
final AtomicReference<String> ref = new AtomicReference<>("0");
final IOConsumer<String> consumer1 = s -> ref.set(ref.get() + s);
IOConsumer.forAll(consumer1, new String[] {"1"});
assertEquals("01", ref.get());
}
@Test
public void testForAllArrayOf2() throws IOException {
IOConsumer.forAll(TestUtils.throwingIOConsumer(), (String[]) null);
IOConsumer.forAll(null, (String[]) null);
assertThrows(IOExceptionList.class, () -> IOConsumer.forAll(TestUtils.throwingIOConsumer(), new String[] {"1", "2"}));
//
final AtomicReference<String> ref = new AtomicReference<>("0");
final IOConsumer<String> consumer1 = s -> ref.set(ref.get() + s);
IOConsumer.forAll(consumer1, new String[] {"1", "2"});
assertEquals("012", ref.get());
}
@Test
public void testForAllIterableOf1() throws IOException {
IOConsumer.forAll(TestUtils.throwingIOConsumer(), (Iterable<Object>) null);
IOConsumer.forAll(null, (Iterable<Object>) null);
assertThrows(IOExceptionList.class, () -> IOConsumer.forAll(TestUtils.throwingIOConsumer(), Arrays.asList("1")));
final AtomicReference<String> ref = new AtomicReference<>("0");
final IOConsumer<String> consumer1 = s -> ref.set(ref.get() + s);
IOConsumer.forAll(consumer1, Arrays.asList("1"));
assertEquals("01", ref.get());
}
@Test
public void testForAllIterableOf2() throws IOException {
IOConsumer.forAll(TestUtils.throwingIOConsumer(), (Iterable<Object>) null);
IOConsumer.forAll(null, (Iterable<Object>) null);
assertThrows(IOExceptionList.class, () -> IOConsumer.forAll(TestUtils.throwingIOConsumer(), Arrays.asList("1", "2")));
final AtomicReference<String> ref = new AtomicReference<>("0");
final IOConsumer<String> consumer1 = s -> ref.set(ref.get() + s);
IOConsumer.forAll(consumer1, Arrays.asList("1", "2"));
assertEquals("012", ref.get());
}
@Test
public void testForAllStreamOf1() throws IOException {
IOConsumer.forAll(TestUtils.throwingIOConsumer(), (Stream<Object>) null);
IOConsumer.forAll(null, (Stream<Object>) null);
assertThrows(IOExceptionList.class, () -> IOConsumer.forAll(TestUtils.throwingIOConsumer(), Arrays.asList("1").stream()));
final AtomicReference<String> ref = new AtomicReference<>("0");
final IOConsumer<String> consumer1 = s -> ref.set(ref.get() + s);
IOConsumer.forAll(consumer1, Arrays.asList("1").stream());
assertEquals("01", ref.get());
}
@Test
public void testForAllStreamOf2() throws IOException {
IOConsumer.forAll(TestUtils.throwingIOConsumer(), (Stream<Object>) null);
IOConsumer.forAll(null, (Stream<Object>) null);
assertThrows(IOExceptionList.class, () -> IOConsumer.forAll(TestUtils.throwingIOConsumer(), Arrays.asList("1", "2").stream()));
final AtomicReference<String> ref = new AtomicReference<>("0");
final IOConsumer<String> consumer1 = s -> ref.set(ref.get() + s);
IOConsumer.forAll(consumer1, Arrays.asList("1", "2").stream());
assertEquals("012", ref.get());
}
@Test
public void testNoop() {
final Closeable nullCloseable = null;
final IOConsumer<IOException> noopConsumer = IOConsumer.noop(); // noop consumer doesn't throw
assertDoesNotThrow(() -> IOUtils.close(nullCloseable, noopConsumer));
assertDoesNotThrow(() -> IOUtils.close(new StringReader("s"), noopConsumer));
assertDoesNotThrow(() -> IOUtils.close(new ThrowOnCloseReader(new StringReader("s")), noopConsumer));
}
}
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