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Assertions_assertThatThrownBy_Test.java
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Assertions_assertThatThrownBy_Test.java
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/*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* Copyright 2012-2024 the original author or authors.
*/
package org.assertj.core.api;
import static java.lang.String.format;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.assertj.core.api.BDDAssertions.then;
import static org.assertj.core.error.ShouldHaveMessage.shouldHaveMessage;
import static org.assertj.core.util.AssertionsUtil.expectAssertionError;
import org.assertj.core.api.ThrowableAssert.ThrowingCallable;
import org.junit.jupiter.api.Test;
class Assertions_assertThatThrownBy_Test {
@Test
void should_work_with_runtime_exception_thrown() {
// WHEN/THEN
assertThatThrownBy(codeThrowing(new IllegalArgumentException("boom"))).isInstanceOf(IllegalArgumentException.class)
.hasMessage("boom");
}
@Test
void should_work_with_throwable_thrown() {
// WHEN/THEN
assertThatThrownBy(codeThrowing(new Throwable("boom"))).isInstanceOf(Throwable.class)
.hasMessage("boom");
}
@Test
void should_work_with_method_reference_having_vararg_parameter() {
// WHEN/THEN
assertThatThrownBy(Assertions_assertThatThrownBy_Test::methodThrowing).isInstanceOf(Exception.class)
.hasMessage("boom");
}
@Test
void should_support_description() {
// GIVEN
Throwable throwable = new Exception("boom");
// WHEN
AssertionError assertionError = expectAssertionError(() -> assertThatThrownBy(codeThrowing(throwable), "Test %s",
"code").hasMessage("bam"));
// THEN
then(assertionError).hasMessageContaining("[Test code]");
}
@Test
void should_fail_if_no_throwable_was_thrown() {
// WHEN
AssertionError assertionError = expectAssertionError(() -> assertThatThrownBy(() -> {}).hasMessage("boom ?"));
// THEN
then(assertionError).hasMessage(format("%nExpecting code to raise a throwable."));
}
@Test
void should_fail_with_proper_message_when_assertion_is_failing() {
// GIVEN
Throwable throwable = new Exception("boom");
// WHEN
AssertionError assertionError = expectAssertionError(() -> assertThatThrownBy(codeThrowing(throwable)).hasMessage("bam"));
// THEN
then(assertionError).hasMessage(shouldHaveMessage(throwable, "bam").create());
}
private static ThrowingCallable codeThrowing(Throwable t) {
return () -> {
throw t;
};
}
private static void methodThrowing(Object... parameters) throws Exception {
throw new Exception("boom");
}
}