How to use thenIllegalArgumentException method of org.assertj.core.api.BDDAssertions class

Best Assertj code snippet using org.assertj.core.api.BDDAssertions.thenIllegalArgumentException

Source:ProductPriceAdapterImperativeTest.java

1package com.ftm.javafp.monads.either;2import org.assertj.core.api.ThrowableAssert.ThrowingCallable;3import org.junit.jupiter.api.Test;4import static org.assertj.core.api.BDDAssertions.then;5import static org.assertj.core.api.BDDAssertions.thenIllegalArgumentException;6class ProductPriceAdapterImperativeTest {7    private final ProductPriceAdapterImperative adapter = new ProductPriceAdapterImperative();8    @Test9    void should_return_product_price_for_valid_references() {10        // Given11        final var searchCriteria = aValidSearchCriteria();12        final var expected = aValidProductPrice();13        // When14        final var productPrice = adapter.getProductPrice(searchCriteria);15        // Then16        then(productPrice).isEqualTo(expected);17    }18    @Test19    void should_throw_exception_when_product_price_not_found() {20        // Given21        final var searchCriteria = aValidSearchCriteriaWithUnknownReference();22        // When23        final ThrowingCallable throwable = () -> adapter.getProductPrice(searchCriteria);24        // Then25        thenIllegalArgumentException().isThrownBy(throwable);26    }27    @Test28    void should_throw_exception_when_product_out_of_stock() {29        // Given30        final var searchCriteria = aValidSearchCriteriaWithOutOfStockReference();31        // When32        final ThrowingCallable throwable = () -> adapter.getProductPrice(searchCriteria);33        // Then34        thenIllegalArgumentException().isThrownBy(throwable);35    }36    @Test37    void should_throw_exception_when_invalid_search_criteria() {38        // Given39        final SearchCriteria invalidSearchCriteria = null;40        // When41        final ThrowingCallable throwable = () -> adapter.getProductPrice(invalidSearchCriteria);42        // Then43        thenIllegalArgumentException().isThrownBy(throwable);44    }45    private SearchCriteria aValidSearchCriteriaWithOutOfStockReference() {46        return new SearchCriteria(new ProductReference("789"));47    }48    private ProductPrice aValidProductPrice() {49        return new ProductPrice(aValidProductReference(), aValidPrice());50    }51    private Price aValidPrice() {52        return new Price("EUR", 5095, 2);53    }54    private SearchCriteria aValidSearchCriteria() {55        return new SearchCriteria(aValidProductReference());56    }57    private SearchCriteria aValidSearchCriteriaWithUnknownReference() {...

Source:NameTest.java

...5import org.junit.jupiter.params.provider.NullSource;6import org.junit.jupiter.params.provider.ValueSource;7import static com.project.kodesalon.exception.ErrorCode.INVALID_MEMBER_NAME;8import static org.assertj.core.api.BDDAssertions.then;9import static org.assertj.core.api.BDDAssertions.thenIllegalArgumentException;10class NameTest {11    @ParameterizedTest12    @ValueSource(strings = {"ê¹ì¨", "ë°íëë³ëêµ¬ë¦íëë³´ë¤ì¬ëì¤ë¬ì°ë¦¬"})13    @DisplayName("value ë©ìëë¥¼ í¸ì¶íë©´ ì´ë¦ì ë¦¬í´í©ëë¤.")14    void value(String validName) {15        Name name = new Name(validName);16        then(name.value()).isEqualTo(validName);17    }18    @ParameterizedTest19    @ValueSource(strings = {"ê¹", "ë°íëë³ëêµ¬ë¦íëë³´ë¤ì¬ëì¤ë¬ì°ë¦¬ë", "ì ì´", "ì~", "abc"})20    @DisplayName("ì í¨íì§ ìì ì´ë¦ì ìì¸ë¥¼ ë°ììíµëë¤.")21    void name_throw_exception_with_invalid_format(String invalidName) {22        thenIllegalArgumentException().isThrownBy(() -> new Name(invalidName))23                .withMessage(INVALID_MEMBER_NAME);24    }25    @ParameterizedTest26    @NullSource27    @DisplayName("nullì¼ ê²½ì°, ìì¸ê° ë°ìí©ëë¤")28    void name_throw_exception_with_null(String nullArgument) {29        thenIllegalArgumentException().isThrownBy(() -> new Name(nullArgument))30                .withMessage(INVALID_MEMBER_NAME);31    }32    @Test33    @DisplayName("ëì¼í ì´ë¦ì ê°ì§ ê°ì²´ë¥¼ ë¹êµí  ê²½ì°, trueë¥¼ ë¦¬í´í©ëë¤")34    void equals() {35        Name name = new Name("ì´ë¦");36        then(name).isEqualTo(new Name("ì´ë¦"));37    }38}...

Source:FizzBuzzTest.java

...3import org.junit.jupiter.api.Test;4import java.util.List;5import java.util.function.Consumer;6import java.util.function.Function;7import static org.assertj.core.api.BDDAssertions.thenIllegalArgumentException;8import static org.assertj.core.api.BDDSoftAssertions.thenSoftly;9class FizzBuzzTest {10    private final Function<Input, List<String>> fizzBuzz = new FizzBuzz();11    @Test12    void should_print_first_100_elements() {13        // Given14        final Consumer<String> consumer = System.out::println;15        final var input = Input.of(1, 100);16        // When17        final List<String> actual = fizzBuzz.apply(input);18        actual.forEach(consumer);19        // Then20        thenSoftly(softly -> {21            softly.then(actual).hasSize(100);22            softly.then(actual.get(2)).isEqualTo("Fizz");23            softly.then(actual.get(4)).isEqualTo("Buzz");24            softly.then(actual.get(89)).isEqualTo("FizzBuzz");25        });26    }27    @Test28    void should_throw_exception_when_invalid_input() {29        thenIllegalArgumentException().isThrownBy(() -> Input.of(10, 0));30    }31}...

thenIllegalArgumentException

Using AI Code Generation

1import org.assertj.core.api.BDDAssertions;2import org.junit.Test;3public class AssertJTest {4    public void test() {5        BDDAssertions.thenIllegalArgumentException().isThrownBy(() -> {6            throw new IllegalArgumentException();7        });8    }9}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.