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How to use isUnmodifiable method of org.assertj.core.api.AbstractCollectionAssert class

Best Assertj code snippet using org.assertj.core.api.AbstractCollectionAssert.isUnmodifiable

Source:AbstractCollectionAssert.java

...45   * any attempt to modify the collection.46   * <p>47   * Example:48   * <pre><code class='java'> // assertions will pass49   * assertThat(Collections.unmodifiableCollection(new ArrayList&lt;&gt;())).isUnmodifiable();50   * assertThat(Collections.unmodifiableList(new ArrayList&lt;&gt;())).isUnmodifiable();51   * assertThat(Collections.unmodifiableSet(new HashSet&lt;&gt;())).isUnmodifiable();52   *53   * // assertions will fail54   * assertThat(new ArrayList&lt;&gt;()).isUnmodifiable();55   * assertThat(new HashSet&lt;&gt;()).isUnmodifiable();</code></pre>56   *57   * @return {@code this} assertion object.58   * @throws AssertionError if the actual collection is modifiable.59   * @see Collections#unmodifiableCollection(Collection)60   * @see Collections#unmodifiableList(List)61   * @see Collections#unmodifiableSet(Set)62   */63  @Beta64  public SELF isUnmodifiable() {65    isNotNull();66    assertIsUnmodifiable();67    return myself;68  }69  @SuppressWarnings("unchecked")70  private void assertIsUnmodifiable() {71    switch (actual.getClass().getName()) {72      case "java.util.Collections$EmptyList":73      case "java.util.Collections$EmptyNavigableSet":74      case "java.util.Collections$EmptySet":75      case "java.util.Collections$EmptySortedSet":76      case "java.util.Collections$SingletonList":77      case "java.util.Collections$SingletonSet":78        // immutable by contract, although not all methods throw UnsupportedOperationException...

isUnmodifiable

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.ArrayList;3import java.util.Collections;4import java.util.List;5import org.junit.Test;6public class AssertJTest {7    public void testAssertJ() {8        List<String> list = new ArrayList<String>();9        list.add("one");10        list.add("two");11        list.add("three");12        list.add("four");13        list.add("five");14        assertThat(list).hasSize(5).isNotEmpty().contains("two", "four").doesNotContain("six");15        assertThat(list).startsWith("one").endsWith("five");16        assertThat(list).isUnmodifiable();17    }18}19	at org.assertj.core.error.ShouldBeNotEmpty.shouldNotBeEmpty(ShouldBeNotEmpty.java:15)20	at org.assertj.core.internal.Iterables.assertNotEmpty(Iterables.java:66)21	at org.assertj.core.internal.Iterables.assertNotEmpty(Iterables.java:60)22	at org.assertj.core.internal.Iterables.assertNotEmpty(Iterables.java:39)23	at org.assertj.core.api.AbstractIterableAssert.isNotEmpty(AbstractIterableAssert.java:149)24	at com.baeldung.assertj.AssertJTest.testAssertJ(AssertJTest.java:18)25import static org.assertj.core.api.Assertions.assertThat;26import java.util.ArrayList;27import java.util.Collections;28import java.util.List;29import org.junit.jupiter.api.Test;30import static org.junit.jupiter.api.Assertions.assertAll;31import static org.junit.jupiter.api.Assertions.assertThrows;32public class AssertJTest {33    public void testAssertJ() {34        List<String> list = new ArrayList<String>();35        list.add("one");36        list.add("two");37        list.add("three");38        list.add("four");39        list.add("five");40        assertAll("list",41          () -> assertThat(list).hasSize(5),42          () -> assertThat(list).isNotEmpty(),43          () -> assertThat(list).contains("two", "four"),44          () -> assertThat(list).doesNotContain("six"),45          () -> assertThat(list).startsWith("one"),46          () -> assertThat(list).endsWith("five"),47          () -> assertThat(list).isUnmodifiable()48        );49    }50}

isUnmodifiable

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat; 2import java.util.ArrayList; 3import java.util.Collection; 4import java.util.Collections; 5import java.util.List; 6import org.junit.Test; 7public class AssertjCollectionTest { 8public void givenUnmodifiableCollection_whenAssertingUnmodifiable_thenCorrect() { 9Collection<String> unmodifiable = Collections.unmodifiableCollection(new ArrayList<>()); 10assertThat(unmodifiable).isUnmodifiable(); 11} 12public void givenModifiableCollection_whenAssertingUnmodifiable_thenCorrect() { 13List<String> modifiable = new ArrayList<>(); 14assertThat(modifiable).isNotUnmodifiable(); 15} 16}

isUnmodifiable

Using AI Code Generation

1public void testIsUnmodifiable() {2    Collection<String> collection = Arrays.asList("one", "two", "three");3    assertThat(collection).isUnmodifiable();4}5public void testIsUnmodifiable() {6    Collection<String> collection = new ArrayList<>();7    collection.add("one");8    collection.add("two");9    collection.add("three");10    assertThat(collection).isUnmodifiable();11}12public void testIsUnmodifiable() {13    Collection<String> collection = new HashSet<>();14    collection.add("one");15    collection.add("two");16    collection.add("three");17    assertThat(collection).isUnmodifiable();18}19public void testIsUnmodifiable() {20    Collection<String> collection = new HashSet<>();21    collection.add("one");22    collection.add("two");23    collection.add("three");24    collection = Collections.unmodifiableCollection(collection);25    assertThat(collection).isUnmodifiable();26}27public void testIsUnmodifiable() {28    Collection<String> collection = new HashSet<>();29    collection.add("one");30    collection.add("two");31    collection.add("three");32    collection = Collections.unmodifiableCollection(collection);33    assertThat(collection).isUnmodifiable();34}35public void testIsUnmodifiable() {36    Collection<String> collection = new HashSet<>();37    collection.add("one");38    collection.add("two");39    collection.add("three");40    collection = Collections.unmodifiableCollection(collection);41    assertThat(collection).isUnmodifiable();42}43public void testIsUnmodifiable() {

isUnmodifiable

Using AI Code Generation

1final List<String> unmodifiableList = Collections.unmodifiableList(Arrays.asList("one", "two", "three"));2final List<String> modifiableList = new ArrayList<String>(unmodifiableList);3assertThat(unmodifiableList).isUnmodifiable();4assertThat(modifiableList).isNotUnmodifiable();5final List<String> unmodifiableList = Collections.unmodifiableList(Arrays.asList("one", "two", "three"));6final List<String> modifiableList = new ArrayList<String>(unmodifiableList);7assertThat(unmodifiableList).isUnmodifiable();8assertThat(modifiableList).isNotUnmodifiable();

isUnmodifiable

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.ArrayList;3import java.util.Collections;4import java.util.List;5public class Test {6   public static void main(String[] args) {7      List<String> list = new ArrayList<String>();8      list.add("Java");9      list.add("C++");10      list.add("PHP");11      list.add("C#");12      list.add("Python");13      assertThat(list).isUnmodifiable();14      list.add("Ruby");15      System.out.println("List is unmodifiable");16   }17}18  at org.assertj.core.error.ShouldBeNotInstanceOf.shouldNotBeInstance(ShouldBeNotInstanceOf.java:39)19  at org.assertj.core.internal.Failures.failure(Failures.java:89)20  at org.assertj.core.internal.Objects.assertIsNotInstanceOf(Objects.java:105)21  at org.assertj.core.api.AbstractAssert.isNotInstanceOf(AbstractAssert.java:249)22  at org.assertj.core.api.AbstractCollectionAssert.isUnmodifiable(AbstractCollectionAssert.java:142)23  at Test.main(Test.java:14)24  at org.assertj.core.error.ShouldBeNotInstanceOf.shouldNotBeInstance(ShouldBeNotInstanceOf.java:39)25  at org.assertj.core.internal.Failures.failure(Failures.java:89)26  at org.assertj.core.internal.Objects.assertIsNotInstanceOf(Objects.java:105)27  at org.assertj.core.api.AbstractAssert.isNotInstanceOf(AbstractAssert.java:249)28  at org.assertj.core.api.AbstractCollectionAssert.isUnmodifiable(AbstractCollectionAssert.java:142)29  at Test.main(Test.java:14)30org.assertj.core.api.AbstractCollectionAssert.isUnmodifiable(Collection<?> collection)

isUnmodifiable

Using AI Code Generation

1import java.util.Arrays;2import java.util.List;3import org.junit.Test;4import static org.assertj.core.api.Assertions.assertThat;5public class AssertJUnmodifiableListTest {6    public void givenUnmodifiableList_whenChecked_assertionSucceeds() {7        List<Integer> unmodifiableList = Arrays.asList(1, 2, 3);8        assertThat(unmodifiableList).isUnmodifiable();9    }10    @Test(expected = AssertionError.class)11    public void givenModifiableList_whenChecked_assertionFails() {12        List<Integer> modifiableList = Arrays.asList(1, 2, 3);13        modifiableList.add(4);14        assertThat(modifiableList).isUnmodifiable();15    }16}17	at org.junit.Assert.assertEquals(Assert.java:115)18	at org.junit.Assert.assertEquals(Assert.java:144)19	at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:82)20	at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:95)21	at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:30)22	at org.assertj.core.api.AssertionsForClassTypes.isEqualTo(AssertionsForClassTypes.java:54)23	at org.assertj.core.api.AssertionsForClassTypes.isEqualTo(AssertionsForClassTypes.java:49)24	at org.assertj.core.api.Assertions.isEqualTo(Assertions.java:56)25	at org.assertj.core.api.Assertions.isEqualTo(Assertions.java:41)26	at com.baeldung.assertj.unmodifiable.AssertJUnmodifiableListTest.givenUnmodifiableList_whenChecked_assertionSucceeds(AssertJUnmodifiableListTest.java:18)27	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)28	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)29	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)30	at java.lang.reflect.Method.invoke(Method.java:498)31	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)32	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)33	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)34	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

isUnmodifiable

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3import java.util.*;4public class AssertJCollectionIsUnmodifiableTest {5    public void givenUnmodifiableCollection_whenIsUnmodifiable_thenCorrect() {6        Collection<String> collection = Collections.unmodifiableCollection(7                new ArrayList<>(Arrays.asList("one", "two", "three")));8        Assertions.assertThat(collection).isUnmodifiable();9    }10    public void givenModifiableCollection_whenIsUnmodifiable_thenCorrect() {11        Collection<String> collection = new ArrayList<>(Arrays.asList("one", "two", "three"));12        Assertions.assertThat(collection).isNotUnmodifiable();13    }14}15at org.assertj.core.api.AbstractBooleanAssert.isNotEqualTo(AbstractBooleanAssert.java:96)16at org.assertj.core.api.AssertionsForClassTypes.isNotEqualTo(AssertionsForClassTypes.java:1123)17at org.assertj.core.api.AbstractBooleanAssert.isNotEqualTo(AbstractBooleanAssert.java:92)18at org.assertj.core.api.AbstractBooleanAssert.isNot(AbstractBooleanAssert.java:58)19at AssertJCollectionIsUnmodifiableTest.givenModifiableCollection_whenIsUnmodifiable_thenCorrect(AssertJCollectionIsUnmodifiableTest.java:29)

isUnmodifiable

Using AI Code Generation

1import java.util.ArrayList;2import java.util.Collections;3import java.util.List;4import org.assertj.core.api.Assertions;5public class AssertJCollectionAssertIsUnmodifiableTest {6	public static void main(String[] args) {7		List<String> list = new ArrayList<>();8		list.add("Apple");9		list.add("Orange");10		list.add("Grapes");11		list.add("Banana");12		list.add("Papaya");13		Assertions.assertThat(list).isUnmodifiable();14	}15}16[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ demo ---17[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ demo ---18[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ demo ---19[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ demo ---20[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ demo ---

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