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How to use assertThatIOException method of org.assertj.core.api.Assertions class

Best Assertj code snippet using org.assertj.core.api.Assertions.assertThatIOException

Source:PolygonIOTest.java

...11import java.io.UnsupportedEncodingException;12import java.nio.charset.StandardCharsets;13import static org.assertj.core.api.Assertions.assertThat;14import static org.assertj.core.api.Assertions.assertThatCode;15import static org.assertj.core.api.Assertions.assertThatIOException;16/**17 * @author Marek Sabo18 */19public class PolygonIOTest {20    private static final String POLYGON_OK_TXT = "polygon-ok.txt";21    private static final String POLYGON_ERROR_TXT = "polygon-error.txt";22    private static final String POLYGON_OUT_TXT = "polygon-out.txt";23    private LabeledPolygon filledPolygon;24    private LabeledPolygon.Builder builder;25    @Before26    public void setUp() {27        builder = new LabeledPolygon.Builder();28        filledPolygon = new LabeledPolygon.Builder()29                .addVertex("a", new Vertex2D(-100, 0))30                .addVertex("b", new Vertex2D(0, -100))31                .addVertex("c", new Vertex2D(0, 100))32                .addVertex("d", new Vertex2D(-100, 200))33                .addVertex("e", new Vertex2D(-100, 200))34                .build();35    }36    @Test37    public void readCorrectFileDoesNotThrowException() {38        assertThatCode(() -> builder.read(new File(POLYGON_OK_TXT))).doesNotThrowAnyException();39    }40    @Test41    public void readCorrectStreamDoesNotThrowException() {42        assertThatCode(() -> builder.read(new FileInputStream(POLYGON_OK_TXT))).doesNotThrowAnyException();43    }44    @Test45    public void readInvalidFileThrowsException() {46        assertThatIOException().isThrownBy(() -> builder.read(new File(POLYGON_ERROR_TXT)));47    }48    @Test49    public void readInvalidStreamThrowsException() {50        assertThatIOException().isThrownBy(() -> builder.read(new FileInputStream(POLYGON_ERROR_TXT)));51    }52    @Test53    public void readInvalidStreamWrongCoordinate() throws UnsupportedEncodingException {54        // given55        String errorString = "1 2a XXX";56        // when57        InputStream stream = new ByteArrayInputStream(errorString.getBytes(StandardCharsets.UTF_8.name()));58        // then59        assertThatIOException().isThrownBy(() -> builder.read(stream));60    }61    @Test62    public void readInvalidStreamMissingParameter() throws UnsupportedEncodingException {63        // given64        String errorString = "1 2";65        // when66        InputStream stream = new ByteArrayInputStream(errorString.getBytes(StandardCharsets.UTF_8.name()));67        // then68        assertThatIOException().isThrownBy(() -> builder.read(stream));69    }70    @Test71    public void readInvalidStreamInvalidNumberFormat() throws UnsupportedEncodingException {72        // given73        String errorString = "1,1 2,1 name";74        // when75        InputStream stream = new ByteArrayInputStream(errorString.getBytes(StandardCharsets.UTF_8.name()));76        // then77        assertThatIOException().isThrownBy(() -> builder.read(stream));78    }79    @Test80    public void readValidStream() throws UnsupportedEncodingException {81        // given82        String errorString = "1 2 name with spaces";83        // when84        InputStream stream = new ByteArrayInputStream(errorString.getBytes(StandardCharsets.UTF_8.name()));85        // then86        assertThatCode(() -> builder.read(stream))87                .doesNotThrowAnyException();88    }89    @Test90    public void readCorrectFile() throws IOException {91        // when...

assertThatIOException

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThatIOException;2import java.io.File;3import java.io.IOException;4import org.junit.Test;5public class AssertJIOExceptionTest {6    public void whenIOExceptionThrown_thenAssertionSucceeds() {7        File file = new File("non_existent_file.txt");8        assertThatIOException().isThrownBy(() -> file.getCanonicalPath());9    }10}11at org.junit.Assert.assertEquals(Assert.java:115)12at org.junit.Assert.assertEquals(Assert.java:144)13at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:62)14at org.assertj.core.api.AssertionsForClassTypes.catchThrowable(AssertionsForClassTypes.java:770)15at org.assertj.core.api.AssertionsForClassTypes.catchThrowable(AssertionsForClassTypes.java:785)16at org.assertj.core.api.Assertions.catchThrowable(Assertions.java:1121)17at org.assertj.core.api.Assertions.assertThatThrownBy(Assertions.java:1068)18at com.baeldung.assertj.AssertJIOExceptionTest.whenIOExceptionThrown_thenAssertionSucceeds(AssertJIOExceptionTest.java:13)

assertThatIOException

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThatIOException;2public class AssertJAssertions {3  public static void main(String[] args) {4    assertThatIOException().isThrownBy(() -> {5      throw new IOException("boom!");6    }).withMessage("boom!");7  }8}9import static org.assertj.core.api.Assertions.assertThatIOException;10public class AssertJAssertions {11  public static void main(String[] args) {12    assertThatIOException().isThrownBy(() -> {13      throw new IOException("boom!");14    }).withMessage("boom!");15  }16}

assertThatIOException

Using AI Code Generation

1import java.io.File;2import java.io.IOException;3import java.nio.file.Files;4import java.nio.file.Path;5import java.nio.file.Paths;6import org.assertj.core.api.Assertions;7public class AssertJAssertionsTest {8	public static void main(String[] args) {9		Path path = Paths.get("C:\\Users\\user\\Desktop\\test.txt");10		File file = path.toFile();11		Assertions.assertThat(file).exists();12		try {13			Files.deleteIfExists(path);14		} catch (IOException e) {15			Assertions.assertThatIOException().isThrownBy(() -> {16				Files.deleteIfExists(path);17			}).withMessage("C:\\Users\\user\\Desktop\\test.txt (The system cannot find the file specified)");18		}19	}20}21Expected :C:\Users\user\Desktop\test.txt (The system cannot find the file specified)22Actual   :C:\Users\user\Desktop\test.txt (The process cannot access the file because it is being used by another process)23Method Description assertThat(Object actual) Creates a new instance of <code>ObjectAssert</code>. assertThat(boolean actual) Creates a new instance of <code>BooleanAssert</code>. assertThat(Boolean actual) Creates a new instance of <code>BooleanAssert</code>. assertThat(boolean[] actual) Creates a new instance of <code>BooleanArrayAssert</code>. assertThat(Boolean[] actual) Creates a new instance of <code>BooleanArrayAssert</code>. assertThat(byte actual) Creates a new instance of <code>ByteAssert</code>. assertThat(Byte actual) Creates a new instance of <code>ByteAssert</code>. assertThat(byte[] actual) Creates a new instance of <code>ByteArrayAssert</code>. assertThat(Byte[] actual) Creates a new instance of <code>ByteArrayAssert</code>. assertThat(char actual) Creates a new instance of <code>CharacterAssert</code>. assertThat(Character actual) Creates a new instance of <code>CharacterAssert</code>. assertThat(char[] actual) Creates a new instance of <code>CharArrayAssert</code>. assertThat(Character[] actual) Creates a new instance of <code>CharArrayAssert</code>. assertThat(double actual) Creates a new instance of <code

assertThatIOException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.jupiter.api.Test;3import java.io.IOException;4import java.util.function.Supplier;5public class AssertJAssertionsTest {6    public void assertThatIOExceptionTest() {7        Supplier<String> supplier = () -> {8            throw new IOException("Test IOException");9        };10        Assertions.assertThatIOException().isThrownBy(supplier);11    }12}13Related Posts: AssertJ - assertThatThrownBy() method in Assertions class14AssertJ - assertThatIllegalArgumentException() method in Assertions class15AssertJ - assertThatNullPointerException() method in Assertions class16AssertJ - assertThatIllegalStateException() method in Assertions class17AssertJ - assertThatExceptionOfType() method in Assertions class18AssertJ - assertThatNoException() method in Assertions class19AssertJ - assertThatThrownBy() method in ThrowableAssert class20AssertJ - assertThatIllegalArgumentException() method in ThrowableAssert class21AssertJ - assertThatNullPointerException() method in ThrowableAssert class22AssertJ - assertThatIllegalStateException() method in ThrowableAssert class23AssertJ - assertThatExceptionOfType() method in ThrowableAssert class24AssertJ - assertThatNoException() method in ThrowableAssert class25AssertJ - assertThatIllegalArgumentException() method in ThrowableAssert.ThrowingCallable class26AssertJ - assertThatNullPointerException() method in ThrowableAssert.ThrowingCallable class27AssertJ - assertThatIllegalStateException() method in ThrowableAssert.ThrowingCallable class28AssertJ - assertThatExceptionOfType() method in ThrowableAssert.ThrowingCallable class29AssertJ - assertThatNoException() method in ThrowableAssert.ThrowingCallable class30AssertJ - assertThatIllegalArgumentException() method in ThrowableAssert.ThrowingCallable class31AssertJ - assertThatNullPointerException() method in ThrowableAssert.ThrowingCallable class32AssertJ - assertThatIllegalStateException() method in ThrowableAssert.ThrowingCallable class33AssertJ - assertThatExceptionOfType() method in ThrowableAssert.ThrowingCallable class34AssertJ - assertThatNoException() method in ThrowableAssert.ThrowingCallable class35AssertJ - assertThatIllegalArgumentException() method in ThrowableAssert.ThrowingCallable class36AssertJ - assertThatNullPointerException() method in ThrowableAssert.ThrowingCallable class37AssertJ - assertThatIllegalStateException() method in ThrowableAssert.ThrowingCallable class38AssertJ - assertThatExceptionOfType() method in ThrowableAssert.ThrowingCallable class39AssertJ - assertThatNoException() method in ThrowableAssert.Th

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