KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use assertThatIterator method of org.assertj.core.api.IteratorAssert class
Best Assertj code snippet using org.assertj.core.api.IteratorAssert.assertThatIterator
Source:Assertions_assertThatIterator_Test.java 
...11 * Copyright 2012-2022 the original author or authors.12 */13package org.assertj.core.api;14import static java.util.Arrays.asList;15import static org.assertj.core.api.Assertions.assertThatIterator;16import static org.assertj.core.api.BDDAssertions.then;17import static org.assertj.core.util.AssertionsUtil.expectAssertionError;18import static org.assertj.core.util.Sets.newLinkedHashSet;19import static org.mockito.Mockito.mock;20import static org.mockito.Mockito.verifyNoInteractions;21import java.util.Iterator;22import org.junit.jupiter.api.Test;23class Assertions_assertThatIterator_Test {24 private final StringIterator stringIterator = new StringIterator();25 private static final class StringIterator implements Iterator<String> {26 @Override27 public boolean hasNext() {28 return true;29 }30 @Override31 public String next() {32 return "";33 }34 @Override35 public void remove() {}36 }37 @Test38 void should_create_Assert() {39 // GIVEN40 Iterable<Object> actual = newLinkedHashSet();41 // WHEN42 IteratorAssert<Object> iteratorAssert = assertThatIterator(actual.iterator());43 // THEN44 then(iteratorAssert).isNotNull();45 }46 @SuppressWarnings("unchecked")47 @Test48 void should_initialise_actual() {49 // GIVEN50 Iterator<String> names = asList("Luke", "Leia").iterator();51 // WHEN52 Iterator<String> actual = (Iterator<String>) assertThatIterator(names).actual;53 // THEN54 then(actual).hasNext();55 }56 @Test57 void should_allow_null() {58 then(assertThatIterator((Iterator<String>) null).actual).isNull();59 }60 @Test61 void isEqualTo_should_honor_comparing_the_same_mocked_iterator() {62 // GIVEN63 Iterator<?> iterator = mock(Iterator.class);64 // WHEN/THEN65 assertThatIterator(iterator).isEqualTo(iterator);66 }67 @Test68 void should_not_consume_iterator_when_asserting_non_null() {69 // GIVEN70 Iterator<?> iterator = mock(Iterator.class);71 // WHEN72 assertThatIterator(iterator).isNotNull();73 // THEN74 verifyNoInteractions(iterator);75 }76 @Test77 void isInstanceOf_should_check_the_original_iterator_without_consuming_it() {78 // GIVEN79 Iterator<?> iterator = mock(Iterator.class);80 // WHEN81 assertThatIterator(iterator).isInstanceOf(Iterator.class);82 // THEN83 verifyNoInteractions(iterator);84 }85 @Test86 void isInstanceOfAny_should_check_the_original_iterator_without_consuming_it() {87 // GIVEN88 Iterator<?> iterator = mock(Iterator.class);89 // WHEN90 then(iterator).isInstanceOfAny(Iterator.class, String.class);91 // THEN92 verifyNoInteractions(iterator);93 }94 @Test95 void isOfAnyClassIn_should_check_the_original_iterator_without_consuming_it() {96 assertThatIterator(stringIterator).isOfAnyClassIn(Iterator.class, StringIterator.class);97 }98 @Test99 void isExactlyInstanceOf_should_check_the_original_iterator() {100 assertThatIterator(new StringIterator()).isExactlyInstanceOf(StringIterator.class);101 }102 @Test103 void isNotExactlyInstanceOf_should_check_the_original_iterator() {104 // WHEN105 assertThatIterator(stringIterator).isNotExactlyInstanceOf(Iterator.class);106 // THEN107 expectAssertionError(() -> then(stringIterator).isNotExactlyInstanceOf(StringIterator.class));108 }109 @Test110 void isNotInstanceOf_should_check_the_original_iterator() {111 assertThatIterator(stringIterator).isNotInstanceOf(Long.class);112 }113 @Test114 void isNotInstanceOfAny_should_check_the_original_iterator() {115 assertThatIterator(stringIterator).isNotInstanceOfAny(Long.class, String.class);116 }117 @Test118 void isNotOfAnyClassIn_should_check_the_original_iterator() {119 assertThatIterator(stringIterator).isNotOfAnyClassIn(Long.class, String.class);120 }121 @Test122 void isSameAs_should_check_the_original_iterator_without_consuming_it() {123 // GIVEN124 Iterator<?> iterator = mock(Iterator.class);125 // WHEN126 assertThatIterator(iterator).isSameAs(iterator);127 // THEN128 verifyNoInteractions(iterator);129 }130 @Test131 void isNotSameAs_should_check_the_original_iterator_without_consuming_it() {132 // GIVEN133 Iterator<?> iterator = mock(Iterator.class);134 // WHEN135 expectAssertionError(() -> assertThatIterator(iterator).isNotSameAs(iterator));136 // THEN137 verifyNoInteractions(iterator);138 }139 @Test140 void iterator_can_be_asserted_twice() {141 // GIVEN142 Iterator<String> names = asList("Luke", "Leia").iterator();143 // WHEN/THEN144 assertThatIterator(names).hasNext().hasNext();145 }146}...
Source:IteratorAssert.java
...22 *23 * @author Stephan Windmüller24 */25public class IteratorAssert<ELEMENT> extends AbstractIteratorAssert<IteratorAssert<ELEMENT>, ELEMENT> {26 public static <ELEMENT> IteratorAssert<ELEMENT> assertThatIterator(Iterator<? extends ELEMENT> actual) {27 return new IteratorAssert<>(actual);28 }29 public IteratorAssert(Iterator<? extends ELEMENT> actual) {30 super(actual, IteratorAssert.class);31 }32}...
assertThatIterator
Using AI Code Generation
1import java.util.Arrays;2import java.util.Iterator;3import java.util.List;4import org.assertj.core.api.Assertions;5public class IteratorAssertTest {6 public static void main(String[] args) {7 List<Integer> list = Arrays.asList(1, 2, 3);8 Iterator<Integer> iterator = list.iterator();9 Assertions.assertThatIterator(iterator).contains(1, 2, 3);10 }11}
assertThatIterator
Using AI Code Generation
1import org.assertj.core.api.IteratorAssert;2import org.junit.Test;3import java.util.ArrayList;4import java.util.Iterator;5import java.util.List;6import static org.assertj.core.api.Assertions.assertThat;7public class AssertJTest {8 public void testAssertThatIterator() {9 List<String> list = new ArrayList<>();10 list.add("one");11 list.add("two");12 list.add("three");13 Iterator<String> i = list.iterator();14 assertThat(i).hasNext();15 assertThat(i).next().isEqualTo("one");16 assertThat(i).hasNext();17 assertThat(i).next().isEqualTo("two");18 assertThat(i).hasNext();19 assertThat(i).next().isEqualTo("three");20 assertThat(i).isExhausted();21 }22}23 at org.junit.Assert.assertEquals(Assert.java:115)24 at org.junit.Assert.assertEquals(Assert.java:144)25 at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:65)26 at org.assertj.core.api.AbstractObjectAssert.isEqualTo(AbstractObjectAssert.java:79)27 at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:55)28 at AssertJTest.testAssertThatIterator(AssertJTest.java:22)29assertThat(Iterator<T> actual)30public static <T> IteratorAssert<T> assertThat(Iterator<T> actual)31assertThat(Iterator<T> actual, Class<S> selfType)32public static <T, S extends IteratorAssert<S, T>> S assertThat(Iterator<T> actual, Class<S> selfType)33assertThat(Iterator<T> actual, Class<S> selfType, Description description)34public static <T, S extends IteratorAssert<S, T>> S assertThat(Iterator<T> actual, Class<S> selfType, Description description)35assertThat(Iterator<T> actual, Description description)36public static <T> IteratorAssert<T> assertThat(Iterator<T> actual, Description description)37assertThat(Iterator<T> actual, AbstractAssert<?, ?> original
assertThatIterator
Using AI Code Generation
1package org.example;2import java.util.Iterator;3import java.util.Arrays;4import java.util.List;5import org.assertj.core.api.Assertions;6public class Example {7 public static void main(String[] args) {8 List<String> list = Arrays.asList("foo", "bar");9 Iterator<String> iterator = list.iterator();10 Assertions.assertThatIterator(iterator).contains("foo");11 }12}13package org.example;14import java.util.Iterator;15import java.util.Arrays;16import java.util.List;17import org.assertj.core.api.Assertions;18public class Example {19 public static void main(String[] args) {20 List<String> list = Arrays.asList("foo", "bar");21 Iterator<String> iterator = list.iterator();22 Assertions.assertThatIterator(iterator).contains("foo");23 }24}25package org.example;26import java.util.Iterator;27import java.util.Arrays;28import java.util.List;29import org.assertj.core.api.Assertions;30public class Example {31 public static void main(String[] args) {32 List<String> list = Arrays.asList("foo", "bar");33 Iterator<String> iterator = list.iterator();34 Assertions.assertThatIterator(iterator).contains("foo");35 }36}37package org.example;38import java.util.Iterator;39import java.util.Arrays;40import java.util.List;41import org.assertj.core.api.Assertions;42public class Example {43 public static void main(String[] args) {44 List<String> list = Arrays.asList("foo", "bar");45 Iterator<String> iterator = list.iterator();46 Assertions.assertThatIterator(iterator).contains("foo");47 }48}49package org.example;50import java.util.Iterator;51import java.util.Arrays;52import java.util.List;53import org.assertj.core.api.Assertions;54public class Example {55 public static void main(String[] args) {56 List<String> list = Arrays.asList("foo", "bar");57 Iterator<String> iterator = list.iterator();58 Assertions.assertThatIterator(iterator).contains("foo");59 }60}
assertThatIterator
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.assertj.core.api.IteratorAssert;3import java.util.ArrayList;4import java.util.Iterator;5import java.util.List;6import java.util.stream.Collectors;7import java.util.stream.Stream;8public class Test {9 public static void main(String[] args) {10 List<String> list = new ArrayList<>();11 list.add("A");12 list.add("B");13 list.add("C");14 list.add("D");15 list.add("E");16 Iterator<String> iterator = list.iterator();17 IteratorAssert<String> iteratorAssert = Assertions.assertThat(iterator);18 iteratorAssert.hasNext();19 iteratorAssert.next();
assertThatIterator
Using AI Code Generation
1import org.assertj.core.api.*;2import org.assertj.core.api.AbstractIterableAssert;3import org.assertj.core.api.AssertionInfo;4import org.assertj.core.api.Condition;5import org.assertj.core.api.IterableAssert;6import org.assertj.core.api.IteratorAssert;7import org.assertj.core.api.ListAssert;8import org.assertj.core.api.ObjectAssert;9import org.assertj.core.api.ObjectEnumerableAssert;10import org.assertj.core.api.ObjectArrayAssert;
assertThatIterator
Using AI Code Generation
1package org.example;2import static org.assertj.core.api.Assertions.assertThatIterator;3import java.util.Iterator;4import java.util.ArrayList;5import java.util.List;6import java.util.Arrays;7public class AssertJAssertThatIteratorExample {8 public static void main(String[] args) {9 List<String> list = new ArrayList<>();10 list.add("Apple");11 list.add("Banana");12 list.add("Orange");13 Iterator<String> iterator = list.iterator();14 assertThatIterator(iterator).contains("Apple", "Banana", "Orange");15 }16}17package org.example;18import static org.assertj.core.api.Assertions.assertThatIterator;19import java.util.Iterator;20import java.util.ArrayList;21import java.util.List;22import java.util.Arrays;23public class AssertJAssertThatIteratorExample {24 public static void main(String[] args) {25 List<String> list = new ArrayList<>();26 list.add("Apple");27 list.add("Banana");28 list.add("Orange");29 Iterator<String> iterator = list.iterator();30 assertThatIterator(iterator).contains("Apple", "Banana", "Orange", "Grapes");31 }32}33at org.example.AssertJAssertThatIteratorExample.main(AssertJAssertThatIteratorExample.java:14)34package org.example;35import static org.assertj.core.api.Assertions.assertThatIterator;36import java.util.Iterator;37import java.util.ArrayList;38import java.util.List;39import java.util.Arrays;40public class AssertJAssertThatIteratorExample {41 public static void main(String[] args) {42 List<String> list = new ArrayList<>();43 list.add("Apple");44 list.add("Banana");45 list.add("Orange");
assertThatIterator
Using AI Code Generation
1public class AssertJIterator {2 public static void main(String[] args) {3 Iterator<String> iterator = Arrays.asList("one", "two").iterator();4 assertThat(iterator).hasNext();5 }6}7public class AssertJIterator {8 public static void main(String[] args) {9 Iterator<String> iterator = Arrays.asList("one", "two").iterator();10 assertThat(iterator.next()).isNotNull();11 }12}
assertThatIterator
Using AI Code Generation
1import org.assertj.core.api.*;2import java.util.*;3import org.junit.Test;4public class AssertJIteratorAssert {5 public void test() {6 Iterator<String> iterator1 = Arrays.asList("one", "two", "three").iterator();7 Iterator<String> iterator2 = Arrays.asList("one", "two", "three").iterator();8 Iterator<String> iterator3 = Arrays.asList("one", "two", "three").iterator();9 Iterator<String> iterator4 = Arrays.asList("one", "two", "three").iterator();10 Iterator<String> iterator5 = Arrays.asList("one", "two", "three").iterator();11 Iterator<String> iterator6 = Arrays.asList("one", "two", "three").iterator();12 Iterator<String> iterator7 = Arrays.asList("one", "two", "three").iterator();13 Iterator<String> iterator8 = Arrays.asList("one", "two", "three").iterator();14 Iterator<String> iterator9 = Arrays.asList("one", "two", "three").iterator();15 Iterator<String> iterator10 = Arrays.asList("one", "two", "three").iterator();16 Iterator<String> iterator11 = Arrays.asList("one", "two", "three").iterator();17 Iterator<String> iterator12 = Arrays.asList("one", "two", "three").iterator();18 Iterator<String> iterator13 = Arrays.asList("one", "two", "three").iterator();19 Iterator<String> iterator14 = Arrays.asList("one", "two", "three").iterator();20 Iterator<String> iterator15 = Arrays.asList("one", "two", "three").iterator();21 Iterator<String> iterator16 = Arrays.asList("one", "two", "three").iterator();22 Iterator<String> iterator17 = Arrays.asList("one", "two", "three").iterator();23 Iterator<String> iterator18 = Arrays.asList("one", "two", "three").iterator();24 Iterator<String> iterator19 = Arrays.asList("one", "two", "three").iterator();25 Iterator<String> iterator20 = Arrays.asList("one", "two", "three").iterator();26 Iterator<String> iterator21 = Arrays.asList("one", "two", "three").iterator();27 Iterator<String> iterator22 = Arrays.asList("one", "two", "three").iterator();28 Iterator<String> iterator23 = Arrays.asList("one", "two", "three").iterator();
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.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run Assertj automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in IteratorAssert
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
