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

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

Source:Java7StyleAssertions.java

1package com.baeldung.assertj.exceptions;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.fail;4import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;5import org.junit.Test;6public class Java7StyleAssertions {7    @Test8    public void whenDividingByZero_thenArithmeticException() {9        try {10            int numerator = 10;11            int denominator = 0;12            int quotient = numerator / denominator;13            fail("ArithmeticException expected because dividing by zero yields an ArithmeticException.");14            failBecauseExceptionWasNotThrown(ArithmeticException.class);15        } catch (Exception e) {16            assertThat(e).hasMessage("/ by zero");17            assertThat(e).isInstanceOf(ArithmeticException.class);18        }19    }20}...

failBecauseExceptionWasNotThrown

Using AI Code Generation

1package com.baeldung.assertj;2import org.assertj.core.api.Assertions;3import org.junit.Test;4public class ExceptionAssertionUnitTest {5    public void whenExceptionThrown_thenAssertionSucceeds() {6        try {7            throw new Exception("exception");8        } catch (Exception e) {9            Assertions.assertThat(e)10              .hasMessage("exception");11        }12    }13    public void whenExceptionThrown_thenFailBecauseExceptionWasNotThrown() {14        Assertions.failBecauseExceptionWasNotThrown(Exception.class);15    }16    public void whenNoExceptionThrown_thenFailBecauseExceptionWasNotThrown() {17        try {18            int i = 1 + 1;19        } catch (Exception e) {20            Assertions.failBecauseExceptionWasNotThrown(Exception.class);21        }22    }23}24Assertions.assertThat(e).hasMessage("exception");25try {26     throw new Exception("exception");27} catch (Exception e) {28     Assertions.assertThat(e).hasMessage("exception");29}30I'm not sure, but I think the exception is not thrown in the try block, so the catch block is never executed. I think you should move the Assertions.assertThat(e).hasMessage("

failBecauseExceptionWasNotThrown

Using AI Code Generation

1package org.junit.contrib.java.lang.system;2import org.junit.Rule;3import org.junit.Test;4public class FailBecauseExceptionWasNotThrownTest {5	public final FailBecauseExceptionWasNotThrown failBecauseExceptionWasNotThrown = new FailBecauseExceptionWasNotThrown();6	public void test() {7		failBecauseExceptionWasNotThrown.failBecauseExceptionWasNotThrown(NullPointerException.class);8	}9}10        at org.junit.contrib.java.lang.system.FailBecauseExceptionWasNotThrownTest.test(FailBecauseExceptionWasNotThrownTest.java:12)11package org.junit.contrib.java.lang.system;12import org.junit.Rule;13import org.junit.Test;14import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;15public class FailBecauseExceptionWasNotThrownTest {16	public final FailBecauseExceptionWasNotThrown failBecauseExceptionWasNotThrown = new FailBecauseExceptionWasNotThrown();17	public void test() {18		failBecauseExceptionWasNotThrown(NullPointerException.class);19	}20}21        at org.junit.contrib.java.lang.system.FailBecauseExceptionWasNotThrownTest.test(FailBecauseExceptionWasNotThrownTest.java:12)22package org.junit.contrib.java.lang.system;23import org.junit.Rule;24import org.junit.Test;25import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;26public class FailBecauseExceptionWasNotThrownTest {27	public final FailBecauseExceptionWasNotThrown failBecauseExceptionWasNotThrown = new FailBecauseExceptionWasNotThrown();

failBecauseExceptionWasNotThrown

Using AI Code Generation

1assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause();2assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");3assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause();4assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");5assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");6assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");7assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");8assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");9assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");10assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");11assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");12assertThatThrownBy(() -> { throw new RuntimeException("boom!"); }).isInstanceOf(RuntimeException.class).hasMessageContaining("boom").hasNoCause().hasMessage("boom");13assertThatThrownBy(() -> { throw

failBecauseExceptionWasNotThrown

Using AI Code Generation

1public void whenExceptionThrown_thenAssertionSucceeds() {2    Assertions.assertThatThrownBy(() -> {3        throw new Exception("boom!");4    }).isInstanceOf(Exception.class)5      .hasMessageContaining("boom");6}7public void givenExceptionThrown_whenExceptionThrown_thenAssertionSucceeds() {8    Assertions.assertThatExceptionOfType(Exception.class)9      .isThrownBy(() -> {10          throw new Exception("boom!");11      }).withMessageContaining("boom");12}13public void givenExceptionThrown_whenExceptionThrown_thenAssertionSucceeds() {14    Assertions.assertThatExceptionOfType(Exception.class)15      .isThrownBy(() -> {16          throw new Exception("boom!");17      }).withMessageContaining("boom");18}19public void givenExceptionThrown_whenExceptionThrown_thenAssertionSucceeds() {20    Assertions.assertThatExceptionOfType(Exception.class)21      .isThrownBy(() -> {22          throw new Exception("boom!");23      }).withMessageContaining("boom");24}25public void givenExceptionThrown_whenExceptionThrown_thenAssertionSucceeds() {26    Assertions.assertThatExceptionOfType(Exception.class)27      .isThrownBy(() -> {28          throw new Exception("boom!");29      }).withMessageContaining("boom");30}

failBecauseExceptionWasNotThrown

Using AI Code Generation

1public class DemoTest {2    public void test1() {3        try {4            failBecauseExceptionWasNotThrown(NullPointerException.class);5        } catch (AssertionError e) {6        }7    }8}

failBecauseExceptionWasNotThrown

Using AI Code Generation

1import java.util.*;2import org.junit.*;3import static org.junit.Assert.*;4import static org.junit.Assert.assertEquals;5import static org.junit.Assert.assertFalse;6import static org.junit.Assert.assertTrue;7import static org.junit.Assert.fail;8import org.junit.rules.*;9import org.junit.runner.*;10import org.junit.runners.*;11import org.junit.runners.Parameterized.*;12import org.junit.runners.model.*;13import static org.assertj.core.api.Assertions.*;14import java.util.*;15import java.util.stream.*;16import java.util.function.*;17import java.util.concurrent.*;18import java.util.concurrent.atomic.*;19import java.time.*;20import java.time.temporal.*;21import java.time.temporal.ChronoUnit;22import java.time.temporal.ChronoUnit.*;23import java.time.format.*;24import java.time.format.DateTimeFormatter;25import java.time.format.DateTimeFormatter.*;26import java.time.format.DateTimeFormatterBuilder;27import java.time.format.DateTimeFormatterBuilder.*;28import java.time.format.DateTimeParseException;29import java.time.format.DateTimeParseException.*;30import java.time.temporal.ChronoField;31import java.time.temporal.ChronoField.*;32import java.time.temporal.ChronoUnit;33import java.time.temporal.ChronoUnit.*;34import java.time.temporal.Temporal;35import java.time.temporal.TemporalAccessor;36import java.time.temporal.TemporalAdjuster;37import java.time.temporal.TemporalAdjusters;38import java.time.temporal.TemporalAmount;39import java.time.temporal.TemporalField;40import java.time.temporal.TemporalQueries;41import java.time.temporal.TemporalQuery;42import java.time.temporal.TemporalUnit;43import java.time.temporal.UnsupportedTemporalTypeException;44import java.time.temporal.UnsupportedTemporalTypeException.*;45import java.time.temporal.ValueRange;46import java.time.temporal.WeekFields;47import java.time.temporal.ChronoField.*;48import java.time.temporal.ChronoField;49import java.time.temporal.ChronoUnit.*;50import java.time.temporal.TemporalAdjusters.*;51import java.time.temporal.TemporalQueries.*;52import java.time.temporal.TemporalQuery.*;53import java.time.temporal.TemporalUnit.*;54import java.time.temporal.UnsupportedTemporalTypeException.*;55import java.time.temporal.ValueRange.*;56import java.time.temporal.WeekFields.*;57import java.time.temporal.IsoFields.*;58import java.time.temporal.JulianFields.*;59import java.time.temporal.WeekFields.*;60import java.time.temporal.IsoFields;61import java.time.temporal.JulianFields;62import java.time.temporal.WeekFields

failBecauseExceptionWasNotThrown

Using AI Code Generation

1import org.assertj.core.api.Assertions;2public class Demo {3    public static void main(String[] args) {4        try {5        } catch (Exception e) {6            Assertions.failBecauseExceptionWasNotThrown(e);7        }8    }9}10import org.assertj.core.api.Assertions;11public class Demo {12    public static void main(String[] args) {13        try {14        } catch (Exception e) {15            Assertions.failBecauseExceptionWasNotThrown(e);16        }17    }18}19import org.assertj.core.api.Assertions;20public class Demo {21    public static void main(String[] args) {22        try {23        } catch (Exception e) {24            Assertions.failBecauseExceptionWasNotThrown(e);25        }26    }27}28import org.assertj.core.api.Assertions;29public class Demo {30    public static void main(String[] args) {31        try {32        } catch (Exception e) {33            Assertions.failBecauseExceptionWasNotThrown(e);34        }35    }36}37import org.assertj.core.api.Assertions;38public class Demo {39    public static void main(String[] args) {40        try {41        } catch (Exception e) {42            Assertions.failBecauseExceptionWasNotThrown(e);43        }44    }45}46import org.assertj.core.api.Assertions;47public class Demo {48    public static void main(String[] args) {49        try {50        } catch (Exception e) {51            Assertions.failBecauseExceptionWasNotThrown(e);52        }53    }54}

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