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AssertJ Exception Assertions (#3600) 

* Add XML, JavaConfig and Autowired examples.

* BAEL-1517: Added Java7 style assertions

* BAEL-1517: Upgrade AssertJ to 3.9.0;
add Java 8 style assertion tests

* Revert "Add XML, JavaConfig and Autowired examples."

This reverts commit 8f4df6b903.
This commit is contained in:
Orry 2018-02-06 21:47:26 +02:00 committed by maibin
parent 56316fd029
commit 5a34de448e
3 changed files with 67 additions and 1 deletions
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2
testing-modules/testing/pom.xml
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@ -173,7 +173,7 @@
<jacoco.version>0.7.7.201606060606</jacoco.version>
<guava.version>21.0</guava.version>
<assertj-guava.version>3.1.0</assertj-guava.version>
<assertj-core.version>3.6.1</assertj-core.version>
<assertj-core.version>3.9.0</assertj-core.version>
<assertj-generator.version>2.1.0</assertj-generator.version>
<truth.version>0.32</truth.version>
<jUnitParams.version>1.1.0</jUnitParams.version>

24
testing-modules/testing/src/test/java/com/baeldung/testing/assertj/exceptions/Java7StyleAssertions.java Normal file
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@ -0,0 +1,24 @@
package com.baeldung.testing.assertj.exceptions;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.fail;
import static org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown;
import org.junit.Test;
public class Java7StyleAssertions {
@Test
public void whenDividingByZero_thenArithmeticException() {
try {
int numerator = 10;
int denominator = 0;
int quotient = numerator / denominator;
fail("ArithmeticException expected because dividing by zero yields an ArithmeticException.");
failBecauseExceptionWasNotThrown(ArithmeticException.class);
} catch (Exception e) {
assertThat(e).hasMessage("/ by zero");
assertThat(e).isInstanceOf(ArithmeticException.class);
}
}
}

42
testing-modules/testing/src/test/java/com/baeldung/testing/assertj/exceptions/Java8StyleAssertions.java Normal file
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@ -0,0 +1,42 @@
package com.baeldung.testing.assertj.exceptions;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
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 org.junit.Test;
public class Java8StyleAssertions {
@Test
public void whenDividingByZero_thenArithmeticException() {
assertThatThrownBy(() -> {
int numerator = 10;
int denominator = 0;
int quotient = numerator / denominator;
}).isInstanceOf(ArithmeticException.class)
.hasMessageContaining("/ by zero");
assertThatExceptionOfType(ArithmeticException.class).isThrownBy(() -> {
int numerator = 10;
int denominator = 0;
int quotient = numerator / denominator;
})
.withMessageContaining("/ by zero");
// BDD style:
// when
Throwable thrown = catchThrowable(() -> {
int numerator = 10;
int denominator = 0;
int quotient = numerator / denominator;
});
// then
assertThat(thrown).isInstanceOf(ArithmeticException.class)
.hasMessageContaining("/ by zero");
}
}