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

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.