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How to use Closeables class of org.assertj.core.util package

Best Assertj code snippet using org.assertj.core.util.Closeables

Source:Closeables_closeQuietly_Test.java

...15import java.io.Closeable;16import java.io.IOException;17import org.junit.jupiter.api.Test;18/**19 * Tests for {@link Closeables#closeQuietly(Closeable...)}.20 * 21 * @author Yvonne Wang22 */23class Closeables_closeQuietly_Test {24  @Test25  void should_close_Closeables() {26    CloseableStub[] toClose = new CloseableStub[] { new CloseableStub(), new CloseableStub() };27    Closeables.closeQuietly(toClose);28    assertClosed(toClose);29  }30  @Test31  void should_ignore_thrown_errors() {32    CloseableStub[] toClose = new CloseableStub[] { new CloseableStub(new IOException("")), new CloseableStub() };33    Closeables.closeQuietly(toClose);34    assertClosed(toClose);35  }36  @Test37  void should_ignore_null_Closeables() {38    CloseableStub c = new CloseableStub();39    CloseableStub[] toClose = new CloseableStub[] { null, c };40    Closeables.closeQuietly(toClose);41    assertClosed(c);42  }43  private void assertClosed(CloseableStub... supposelyClosed) {44    for (CloseableStub c : supposelyClosed) {45      assertThat(c.closed).isTrue();46    }47  }48  private static class CloseableStub implements Closeable {49    boolean closed;50    IOException toThrow;51    public CloseableStub() {}52    public CloseableStub(IOException toThrow) {53      this.toThrow = toThrow;54    }...

Source:Closeables.java

...18 * Utility methods related to {@link Closeable}.19 * 20 * @author Yvonne Wang21 */22public final class Closeables {23  private static final Logger logger = Logger.getLogger(Closeables.class.getCanonicalName());24  /**25   * Closes the given {@link Closeable}s, ignoring any thrown exceptions.26   * 27   * @param closeables the {@code Closeable}s to close.28   */29  public static void closeQuietly(Closeable... closeables) {30    for (Closeable c : closeables) {31      closeCloseable(c);32    }33  }34  private static void closeCloseable(Closeable c) {35    if (c == null) {36      return;37    }38    try {39      c.close();40    } catch (Throwable t) {41      logger.log(Level.WARNING, "Error occurred while closing " + c, t);42    }43  }44  private Closeables() {}45}...

Closeables

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3import static org.assertj.core.util.Closeables.closeQuietly;4import java.io.IOException;5import java.io.InputStream;6import org.junit.Test;7public class CloseablesTest {8   public void should_close_input_stream() throws IOException {9      InputStream stream = null;10      try {11         stream = getClass().getResourceAsStream("1.txt");12         assertThat(stream).isNotNull();13      } finally {14         closeQuietly(stream);15      }16   }17   public void should_throw_exception_when_closing_input_stream() throws IOException {18      InputStream stream = null;19      try {20         stream = getClass().getResourceAsStream("1.txt");21         assertThat(stream).isNotNull();22      } finally {23         assertThatExceptionOfType(IOException.class).isThrownBy(() -> {24            closeQuietly(stream);

Closeables

Using AI Code Generation

1import java.io.Closeable;2import java.io.IOException;3import java.util.ArrayList;4import java.util.List;5import java.util.Random;6import java.util.concurrent.atomic.AtomicInteger;7import java.util.concurrent.atomic.AtomicLong;8import java.util.concurrent.atomic.AtomicReference;9import java.util.concurrent.locks.Lock;10import java.util.concurrent.locks.ReentrantLock;11import org.assertj.core.util.Closeables;12public class CloseableExample {13    public static void main(String[] args) throws IOException {14        List<Closeable> closeables = new ArrayList<>();15        closeables.add(new AtomicLong());16        closeables.add(new Lock() {17            public void lock() {18            }19            public void lockInterruptibly() throws InterruptedException {20            }21            public boolean tryLock() {22                return false;23            }24            public boolean tryLock(long time, java.util.concurrent.TimeUnit unit) throws InterruptedException {25                return false;26            }27            public void unlock() {28            }29            public java.util.concurrent.Condition newCondition() {30                return null;31            }32        });33        closeables.add(new Random());34        closeables.add(new AtomicInteger());35        closeables.add(new AtomicReference<>());36        closeables.add(new ReentrantLock());37        Closeables.close(closeables);38    }39}40	at org.assertj.core.util.Closeables.close(Closeables.java:45)41	at org.assertj.core.util.Closeables.close(Closeables.java:28)42	at CloseableExample.main(CloseableExample.java:34)43import java.io.Closeable;44import java.io.IOException;45import java.io.InputStream;46import java.io.OutputStream;47import java.io.Reader;48import java.io.Writer;49import java.util.ArrayList;50import java.util.List;51import java.util.Random;52import java.util.concurrent.atomic.AtomicInteger;53import java.util.concurrent.atomic.AtomicLong;54import java.util.concurrent.atomic.AtomicReference;55import java.util.concurrent.locks.Lock;56import java.util.concurrent.locks.ReentrantLock;57import org.assertj.core.util.Closeables;58public class CloseableExample {59    public static void main(String[] args) throws IOException {60        List<Closeable> closeables = new ArrayList<>();61        closeables.add(new AtomicLong());62        closeables.add(new Lock

Closeables

Using AI Code Generation

1import org.assertj.core.util.Closeables;2import java.io.*;3{4public static void main(String[] args) throws IOException5{6File f=new File("D:\\java\\1.java");7FileInputStream fis=new FileInputStream(f);8Closeables.close(fis);9}10}

Closeables

Using AI Code Generation

1import java.io.*;2import java.util.*;3import org.assertj.core.util.*;4public class AsserjCloseables {5    public static void main(String[] args)6    {7        try {8            File file = new File("file.txt");9            FileWriter fw = new FileWriter(file);10            BufferedWriter bw = new BufferedWriter(fw);11            bw.write("This is a file");12            bw.close();13            System.out.println("File created successfully");14            Closeables.close(bw);15        }16        catch (IOException e) {17            System.out.println("Exception: " + e);18        }19    }20}21import java.io.*;22import java.util.*;23import org.assertj.core.util.*;24public class AsserjCloseables {25    public static void main(String[] args)26    {27        try {28            File file = new File("file.txt");29            FileWriter fw = new FileWriter(file);30            BufferedWriter bw = new BufferedWriter(fw);31            bw.write("This is a file");32            bw.close();33            System.out.println("File created successfully");34            Closeables.close(bw);35        }36        catch (IOException e) {37            System.out.println("Exception: " + e);38        }39    }40}41Recommended Posts: Java | Closeables.close() method

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