Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

How to use list method of org.assertj.core.api.iterable.IterableAssert_singleElement_Test class

Best Assertj code snippet using org.assertj.core.api.iterable.IterableAssert_singleElement_Test.list

Source:IterableAssert_singleElement_Test.java

...14import static java.util.Collections.emptyList;15import static org.assertj.core.api.Assertions.assertThat;16import static org.assertj.core.api.BDDAssertions.then;17import static org.assertj.core.util.AssertionsUtil.expectAssertionError;18import static org.assertj.core.util.Lists.list;19import org.assertj.core.api.AssertFactory;20import org.assertj.core.api.IterableAssert;21import org.assertj.core.api.ObjectAssert;22import org.assertj.core.api.StringAssert;23import org.junit.jupiter.api.DisplayName;24import org.junit.jupiter.api.Test;25/**26 * Tests for <code>{@link IterableAssert#singleElement()}</code>.27 * 28 * @author Michael Grafl29 */30@DisplayName("IterableAssert singleElement")31class IterableAssert_singleElement_Test {32  private final Iterable<String> babySimpsons = list("Maggie");33  private final Iterable<String> simpsons = list("Homer", "Marge", "Lisa", "Bart", "Maggie");34  @Test35  void should_fail_if_iterable_is_empty() {36    // GIVEN37    Iterable<String> iterable = emptyList();38    // WHEN39    AssertionError assertionError = expectAssertionError(() -> assertThat(iterable).singleElement());40    // THEN41    then(assertionError).hasMessageContaining("Expected size:<1> but was:<0>");42  }43  @Test44  void should_pass_allowing_object_assertions_if_iterable_contains_exactly_one_element() {45    // WHEN46    ObjectAssert<String> result = assertThat(babySimpsons).singleElement();47    // THEN...

list

Using AI Code Generation

1public void test() {2    List<String> list = Arrays.asList("foo", "bar");3    assertThat(list).singleElement();4}5public void test() {6    List<String> list = Arrays.asList("foo", "bar");7    assertThat(list).singleElement();8}9public void test() {10    List<String> list = Arrays.asList("foo", "bar");11    assertThat(list).singleElement();12}13public void test() {14    List<String> list = Arrays.asList("foo", "bar");15    assertThat(list).singleElement();16}17public void test() {18    List<String> list = Arrays.asList("foo", "bar");19    assertThat(list).singleElement();20}21public void test() {22    List<String> list = Arrays.asList("foo", "bar");23    assertThat(list).singleElement();24}25public void test() {26    List<String> list = Arrays.asList("foo", "bar");27    assertThat(list).singleElement();28}29public void test() {30    List<String> list = Arrays.asList("foo", "bar");31    assertThat(list).singleElement();32}33public void test() {34    List<String> list = Arrays.asList("foo", "bar");35    assertThat(list).singleElement();36}37public void test() {38    List<String> list = Arrays.asList("foo", "bar");39    assertThat(list).singleElement();40}

list

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.Arrays;3import java.util.List;4import org.junit.Test;5public class ListTest {6public void testSingleElement() {7List<Integer> list = Arrays.asList(1, 2, 3, 4, 5);8assertThat(list).singleElement();9}10}11at org.junit.Assert.assertEquals(Assert.java:115)12at org.junit.Assert.assertEquals(Assert.java:144)13at org.assertj.core.api.iterable.IterableAssert_singleElement_Test.singleElement_should_fail_if_actual_contains_more_than_one_element(IterableAssert_singleElement_Test.java:49)14public void singleElement_should_fail_if_actual_contains_more_than_one_element() {15  List<Integer> list = Arrays.asList(1, 2, 3, 4, 5);16  try {17    assertThat(list).singleElement();18  } catch (AssertionError e) {19    verify(failures).failure(info, shouldContainOnly(list, list.size(), 1));20    return;21  }22  failBecauseExpectedAssertionErrorWasNotThrown();23}24private static AssertionError failure(String message) {25  return new AssertionError(message);26}27private static String shouldContainOnly(List<?> actual, int actualSize, int expectedSize) {28  return String.format("%nExpecting:%n <%s>%nto contain a single element but it contained:%n <%s>%nExpected :%n <%s>%nActual   :%n <%s>%n<Click to see difference>",29                       actual, actual, expectedSize, actualSize);30}31public void singleElement_should_fail_if_actual_is_empty() {32  List<Integer> list = new ArrayList<Integer>();33  try {34    assertThat(list).singleElement();35  } catch (AssertionError e) {36    verify(failures).failure(info, shouldBeSingleton(list));37    return;38  }39  failBecauseExpectedAssertionErrorWasNotThrown();40}41private static String shouldBeSingleton(List<?> actual) {42  return String.format("%nExpecting:%n <%s>%nto contain a single element but it was empty", actual);43}

list

Using AI Code Generation

1import java.io.File;2import java.io.FileNotFoundException;3import java.io.PrintWriter;4import java.lang.reflect.Method;5import java.util.Arrays;6import java.util.List;7import java.util.stream.Collectors;8import org.assertj.core.api.IterableAssert;9import org.assertj.core.api.iterable.IterableAssert_singleElement_Test;10public class IterableAssert_singleElement_Test_Method_Generator {11	public static void main(String[] args) throws FileNotFoundException {12		PrintWriter pw = new PrintWriter(new File("IterableAssert_singleElement_Test.java"));13		StringBuilder sb = new StringBuilder();14		sb.append("package org.assertj.core.api.iterable;15");16		sb.append("import org.assertj.core.api.IterableAssert;17");18		sb.append("import org.assertj.core.api.iterable.IterableAssertBaseTest;19");20		sb.append("import org.junit.jupiter.api.Test;21");22		sb.append("public class IterableAssert_singleElement_Test extends IterableAssertBaseTest {23");24		sb.append("25");26		sb.append(" @Test27");28		sb.append(" public void test() {29");30");31		sb.append(" Iterable<String> iterable = Arrays.asList(\"one\", \"two\", \"three\");32");33");34		sb.append(" IterableAssert<String> result = assertions.singleElement();35");36");37		sb.append(" verify_that_singleElement_is_called();38");39		sb.append(" }40");41		sb.append("42");43		sb.append(" @Test44");45		sb.append(" public void test2() {46");47");48		sb.append(" Iterable<String> iterable = Arrays.asList(\"one\", \"two\", \"three\");49");50");51		sb.append(" IterableAssert<String> result = assertions.singleElement();52");53");54		sb.append(" verify_that_singleElement_is_called();55");56		sb.append(" }57");58		sb.append("59");60		sb.append(" @Test61");62		sb.append(" public void test3() {63");64");

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.