diff --git a/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/exceptions/Java8StyleAssertions.java b/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/exceptions/Java8StyleAssertions.java index 53f192bb2f..973b921654 100644 --- a/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/exceptions/Java8StyleAssertions.java +++ b/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/exceptions/Java8StyleAssertions.java @@ -5,19 +5,43 @@ import static org.assertj.core.api.Assertions.assertThat; import static org.assertj.core.api.Assertions.assertThatExceptionOfType; import static org.assertj.core.api.Assertions.catchThrowable; +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; import org.junit.Test; public class Java8StyleAssertions { @Test - public void whenDividingByZero_thenArithmeticException() { + public void whenGettingOutOfBoundsItem_thenIndexOutOfBoundsException() { assertThatThrownBy(() -> { - int numerator = 10; - int denominator = 0; - int quotient = numerator / denominator; - }).isInstanceOf(ArithmeticException.class) - .hasMessageContaining("/ by zero"); + ArrayList myStringList = new ArrayList(Arrays.asList("Strine one", "String two")); + myStringList.get(2); + }).isInstanceOf(IndexOutOfBoundsException.class) + .hasMessageStartingWith("Index: 2") + .hasMessageContaining("2") + .hasMessageEndingWith("Size: 2") + .hasMessageContaining("Index: 2, Size: 2") + .hasMessage("Index: %s, Size: %s", 2, 2) + .hasMessageMatching("Index: \\d+, Size: \\d+") + .hasNoCause(); + } + @Test + public void whenWrappingException_thenCauseInstanceOfWrappedExceptionType() { + assertThatThrownBy(() -> { + try { + throw new IOException(); + } catch (IOException e) { + throw new RuntimeException(e); + } + }).isInstanceOf(RuntimeException.class) + .hasCauseInstanceOf(IOException.class) + .hasStackTraceContaining("IOException"); + } + + @Test + public void whenDividingByZero_thenArithmeticException() { assertThatExceptionOfType(ArithmeticException.class).isThrownBy(() -> { int numerator = 10; int denominator = 0; @@ -25,7 +49,7 @@ public class Java8StyleAssertions { }) .withMessageContaining("/ by zero"); - // BDD style: + // Alternatively: // when Throwable thrown = catchThrowable(() -> {