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How to use ShouldContainCharSequenceOnlyOnce class of org.assertj.core.error package
Best Assertj code snippet using org.assertj.core.error.ShouldContainCharSequenceOnlyOnce
Source:Strings_assertContainsOnlyOnce_Test.java 
...11 * Copyright 2012-2019 the original author or authors.12 */13package org.assertj.core.internal.strings;14import org.assertj.core.api.Assertions;15import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;16import org.assertj.core.internal.ErrorMessages;17import org.assertj.core.internal.StringsBaseTest;18import org.assertj.core.test.TestData;19import org.assertj.core.util.FailureMessages;20import org.junit.jupiter.api.Test;21/**22 * Tests for <code>{@link Strings#assertContainsOnlyOnce(AssertionInfo, CharSequence, CharSequence)}</code>.23 */24public class Strings_assertContainsOnlyOnce_Test extends StringsBaseTest {25 @Test26 public void should_pass_if_actual_contains_given_string_only_once() {27 strings.assertContainsOnlyOnce(TestData.someInfo(), "Yoda", "Yo");28 }29 @Test30 public void should_fail_if_actual_contains_given_string_more_than_once() {31 Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> strings.assertContainsOnlyOnce(someInfo(), "Yodayoda", "oda")).withMessage(ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yodayoda", "oda", 2).create());32 }33 @Test34 public void should_fail_if_actual_contains_sequence_only_once_but_in_different_case() {35 Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> strings.assertContainsOnlyOnce(someInfo(), "Yoda", "yo")).withMessage(ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "yo", 0).create());36 }37 @Test38 public void should_fail_if_actual_does_not_contain_given_string() {39 Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> strings.assertContainsOnlyOnce(someInfo(), "Yoda", "Luke")).withMessage(ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "Luke", 0).create());40 }41 @Test42 public void should_throw_error_if_sequence_is_null() {43 Assertions.assertThatNullPointerException().isThrownBy(() -> strings.assertContainsOnlyOnce(someInfo(), "Yoda", null)).withMessage(ErrorMessages.charSequenceToLookForIsNull());44 }45 @Test46 public void should_fail_if_actual_is_null() {47 Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> strings.assertContainsOnlyOnce(someInfo(), null, "Yoda")).withMessage(FailureMessages.actualIsNull());48 }49 @Test50 public void should_pass_if_actual_contains_sequence_only_once_according_to_custom_comparison_strategy() {51 stringsWithCaseInsensitiveComparisonStrategy.assertContainsOnlyOnce(TestData.someInfo(), "Yoda", "Yo");52 stringsWithCaseInsensitiveComparisonStrategy.assertContainsOnlyOnce(TestData.someInfo(), "Yoda", "yo");53 stringsWithCaseInsensitiveComparisonStrategy.assertContainsOnlyOnce(TestData.someInfo(), "Yoda", "YO");54 }55 @Test56 public void should_fail_if_actual_does_not_contain_sequence_only_once_according_to_custom_comparison_strategy() {57 Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> stringsWithCaseInsensitiveComparisonStrategy.assertContainsOnlyOnce(someInfo(), "Yoda", "Luke")).withMessage(ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "Luke", 0, comparisonStrategy).create());58 }59 @Test60 public void should_fail_if_actual_contains_sequence_several_times_according_to_custom_comparison_strategy() {61 Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> stringsWithCaseInsensitiveComparisonStrategy.assertContainsOnlyOnce(someInfo(), "Yoda", "Luke")).withMessage(ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "Luke", 0, comparisonStrategy).create());62 }63}...
Source:ShouldContainCharSequenceOnlyOnce.java
...20 * @author Pauline Iogna21 * @author Joel Costigliola22 * @author Mikhail Mazursky23 */24public class ShouldContainCharSequenceOnlyOnce extends BasicErrorMessageFactory {25 /**26 * Creates a new <code>{@link ShouldContainCharSequenceOnlyOnce}</code>.27 * 28 * @param actual the actual value in the failed assertion.29 * @param sequence the String expected to be in {@code actual} only once.30 * @param occurrences the number of occurrences of sequence in actual.31 * @param comparisonStrategy the {@link ComparisonStrategy} used to evaluate assertion.32 * @return the created {@code ErrorMessageFactory}.33 */34 public static ErrorMessageFactory shouldContainOnlyOnce(CharSequence actual, CharSequence sequence, int occurrences,35 ComparisonStrategy comparisonStrategy) {36 if (occurrences == 0) return new ShouldContainCharSequenceOnlyOnce(actual, sequence, comparisonStrategy);37 return new ShouldContainCharSequenceOnlyOnce(actual, sequence, occurrences, comparisonStrategy);38 }39 /**40 * Creates a new <code>{@link ShouldContainCharSequenceOnlyOnce}</code>.41 * 42 * @param actual the actual value in the failed assertion.43 * @param sequence the String expected to be in {@code actual} only once.44 * @param occurrences the number of occurrences of sequence in actual.45 * @return the created {@code ErrorMessageFactory}.46 */47 public static ErrorMessageFactory shouldContainOnlyOnce(CharSequence actual, CharSequence sequence, int occurrences) {48 return shouldContainOnlyOnce(actual, sequence, occurrences, StandardComparisonStrategy.instance());49 }50 private ShouldContainCharSequenceOnlyOnce(CharSequence actual, CharSequence expected, int occurrences, ComparisonStrategy comparisonStrategy) {51 super("%nExpecting actual:%n %s%nto appear only once in:%n %s%nbut it appeared %s times %s", expected, actual,52 occurrences,53 comparisonStrategy);54 }55 private ShouldContainCharSequenceOnlyOnce(CharSequence actual, CharSequence expected, ComparisonStrategy comparisonStrategy) {56 super("%nExpecting actual:%n %s%nto appear only once in:%n %s%nbut it did not appear %s", expected, actual,57 comparisonStrategy);58 }59}...
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;2import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;3import org.assertj.core.error.TestCondition;4import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;5import org.assertj.core.error.TestCondition;6import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;7import org.assertj.core.error.TestCondition;8import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;9import org.assertj.core.error.TestCondition;10import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;11import org.assertj.core.error.TestCondition;12import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;13import org.assertj.core.error.TestCondition;14import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;15import org.assertj.core.error.TestCondition;16import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;17import org.assertj.core.error.TestCondition;18import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce_create_Test;
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;2import org.assertj.core.internal.TestDescription;3import org.assertj.core.presentation.StandardRepresentation;4import org.junit.Test;5import static org.assertj.core.api.Assertions.assertThat;6import static org.assertj.core.error.ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce;7import static org.assertj.core.util.FailureMessages.actualIsNull;8public class ShouldContainCharSequenceOnlyOnce_Test {9 public void should_create_error_message() {10 String message = shouldContainOnlyOnce("Yoda", "do", 2).create(11 new TestDescription("Test"), new StandardRepresentation());12 assertThat(message).isEqualTo(String.format(13 + "but it contained 2 times"));14 }15 public void should_create_error_message_with_custom_comparison_strategy() {16 String message = shouldContainOnlyOnce("Yoda", "do", 2).create(17 new TestDescription("Test"), new StandardRepresentation());18 assertThat(message).isEqualTo(String.format(19 + "but it contained 2 times"));20 }21 public void should_create_error_message_when_actual_is_null() {22 String message = actualIsNull().create(new TestDescription("Test"), new StandardRepresentation());23 assertThat(message).isEqualTo("[Test] %nExpecting actual not to be null");24 }25}
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;2import org.assertj.core.internal.TestDescription;3import org.assertj.core.presentation.StandardRepresentation;4import org.junit.Test;5import static org.assertj.core.api.Assertions.assertThat;6import static org.assertj.core.api.Assertions.assertThatExceptionOfType;7import static org.assertj.core.error.ShouldContainCharSequenceOnlyOnce.shouldContainCharSequenceOnlyOnce;8import static org.assertj.core.util.FailureMessages.actualIsNull;9import static org.assertj.core.util.Sets.newLinkedHashSet;10import static org.assertj.core.util.Throwables.getStackTrace;11public class ShouldContainCharSequenceOnlyOnceTest {12 private static final String actual = "Yoda";13 public void should_create_error_message() {14 String errorMessage = shouldContainCharSequenceOnlyOnce(actual, "od", newLinkedHashSet("od")).create(new TestDescription("Test"), new StandardRepresentation());15 assertThat(errorMessage).isEqualTo(String.format("[Test] %nExpecting:%n <\"Yoda\">%nto contain only once:%n <\"od\">%nbut found:%n <[\"od\", \"od\"]>%n"));16 }17 public void should_create_error_message_with_custom_comparison_strategy() {18 String errorMessage = shouldContainCharSequenceOnlyOnce(actual, "od", newLinkedHashSet("od")).create(new TestDescription("Test"), new StandardRepresentation());19 assertThat(errorMessage).isEqualTo(String.format("[Test] %nExpecting:%n <\"Yoda\">%nto contain only once:%n <\"od\">%nbut found:%n <[\"od\", \"od\"]>%n"));20 }21 public void should_create_error_message_with_custom_comparison_strategy_ignoring_case() {22 String errorMessage = shouldContainCharSequenceOnlyOnce(actual, "Od", newLinkedHashSet("Od")).create(new TestDescription("Test"), new StandardRepresentation());23 assertThat(errorMessage).isEqualTo(String.format("[Test] %nExpecting:%n <\"Yoda\">%nto contain only once:%n <\"Od\">%nbut found:%n <[\"Od\", \"Od\"]>%n"));24 }25 public void should_throw_error_if_sequence_is_null() {26 assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> shouldContainCharSequenceOnlyOnce(actual, null, newLinkedHashSet("od
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;2import org.assertj.core.description.Description;3import org.assertj.core.presentation.StandardRepresentation;4import org.assertj.core.internal.TestDescription;5import org.junit.Test;6import static org.assertj.core.api.Assertions.assertThat;7import static org.assertj.core.error.ShouldContainCharSequenceOnlyOnce.shouldContainCharSequenceOnlyOnce;8import static org.assertj.core.presentation.StandardRepresentation.STANDARD_REPRESENTATION;9public class ShouldContainCharSequenceOnlyOnceTest {10 private ShouldContainCharSequenceOnlyOnce shouldContainCharSequenceOnlyOnce;11 public void should_create_error_message() {12 shouldContainCharSequenceOnlyOnce = shouldContainCharSequenceOnlyOnce("Yoda", "od", 2);13 assertThat(shouldContainCharSequenceOnlyOnce).hasMessage("Expecting:%n" + " <\"Yoda\">%n" + "to contain only once:%n" + " <\"od\">%n" + "but it was found 2 times");14 }15}
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;3import org.junit.jupiter.api.Test;4import static org.assertj.core.api.Assertions.assertThatThrownBy;5import static org.assertj.core.error.ShouldContainCharSequenceOnlyOnce.shouldContainCharSequenceOnlyOnce;6public class AssertJTest {7 public void test() {8 assertThatThrownBy(() -> {9 throw new IllegalArgumentException("test");10 })11 .isInstanceOf(IllegalArgumentException.class)12 .hasMessage(shouldContainCharSequenceOnlyOnce("test", "test", 2).create());13 }14}15import org.assertj.core.api.Assertions;16import org.assertj.core.internal.ErrorMessages;17import org.assertj.core.internal.Objects;18import org.junit.jupiter.api.Test;19import static org.assertj.core.api.Assertions.assertThatThrownBy;20public class AssertJTest {21 public void test() {22 assertThatThrownBy(() -> {23 throw new IllegalArgumentException("test");24 })25 .isInstanceOf(IllegalArgumentException.class)26 .hasMessage(ErrorMessages.instance().shouldContainCharSequenceOnlyOnce("test", "test", 2));27 }28}29import org.assertj.core.api.Assertions;30import org.assertj.core.internal.ErrorMessages;31import org.assertj.core.internal.Objects;32import org.junit.jupiter.api.Test;33import static org.assertj.core.api.Assertions.assertThatThrownBy;34public class AssertJTest {35 public void test() {36 assertThatThrownBy(() -> {37 throw new IllegalArgumentException("test");38 })39 .isInstanceOf(IllegalArgumentException.class)40 .hasMessage(ErrorMessages.instance().shouldContainCharSequenceOnlyOnce("test", "test", 2));41 }42}43import org.assertj.core.api.Assertions;44import org.assertj.core.internal.ErrorMessages;45import org.assertj.core.internal.Objects;46import org.junit.jupiter.api.Test;47import static org.assertj.core.api.Assertions.assertThatThrownBy;48public class AssertJTest {49 public void test() {50 assertThatThrownBy(() -> {51 throw new IllegalArgumentException("test");52 })53 .isInstanceOf(IllegalArgumentException.class)54 .hasMessage(ErrorMessages.instance().shouldContain
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;2import org.assertj.core.api.Assertions;3import org.assertj.core.api.ThrowableAssert.ThrowingCallable;4import org.assertj.core.internal.TestDescription;5import org.assertj.core.error.ErrorMessageFactory;6public class ShouldContainCharSequenceOnlyOnceTest {7 public void should_create_error_message() {8 ErrorMessageFactory factory = ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "od", 2);9 String message = factory.create(new TestDescription("Test"), new StandardRepresentation());10 Assertions.assertThat(message).isEqualTo(String.format("[Test] %nExpecting:%n <\"Yoda\">%nto contain only once:%n <\"od\">%nbut it was found 2 times"));11 }12}13import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;14import org.assertj.core.api.Assertions;15import org.assertj.core.api.ThrowableAssert.ThrowingCallable;16import org.assertj.core.internal.TestDescription;17import org.assertj.core.error.ErrorMessageFactory;18public class ShouldContainCharSequenceOnlyOnceTest {19 public void should_create_error_message() {20 ErrorMessageFactory factory = ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "od", 2);21 String message = factory.create(new TestDescription("Test"), new StandardRepresentation());22 Assertions.assertThat(message).isEqualTo(String.format("[Test] %nExpecting:%n <\"Yoda\">%nto contain only once:%n <\"od\">%nbut it was found 2 times"));23 }24}25import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;26import org.assertj.core.api.Assertions;27import org.assertj.core.api.ThrowableAssert.ThrowingCallable;28import org.assertj.core.internal.TestDescription;29import org.assertj.core.error.ErrorMessageFactory;30public class ShouldContainCharSequenceOnlyOnceTest {31 public void should_create_error_message() {32 ErrorMessageFactory factory = ShouldContainCharSequenceOnlyOnce.shouldContainOnlyOnce("Yoda", "od", 2);33 String message = factory.create(new TestDescription("Test"), new StandardRepresentation());34 Assertions.assertThat(message).isEqualTo(String.format("[Test] %nExpecting:%n <\"Yoda
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.assertj.core.error.ShouldContainCharSequenceOnlyOnce;3public class ShouldContainCharSequenceOnlyOnceExample {4 public static void main(String[] args) {5 String errorMessage = ShouldContainCharSequenceOnlyOnce.shouldContainCharSequenceOnlyOnce("Yoda", "do", 3).create();6 System.out.println(errorMessage);7 }8}
ShouldContainCharSequenceOnlyOnce
Using AI Code Generation
1import static org.assertj.core.api.Assertions.assertThat;2public class AssertJTest {3 public static void main(String[] args) {4 String str = "This is a string";5 assertThat(str).containsOnlyOnce("string");6 }7}8 <1> time(s)9AssertJ containsOnlyOnce() method10Let’s see the syntax of containsOnlyOnce() method:11assertThat(actual).containsOnlyOnce(expected);12Let’s see the example to use containsOnlyOnce() method:13Example to use containsOnlyOnce() method14import static org.assertj.core.api.Assertions.assertThat;15public class AssertJTest {16 public static void main(String[] args) {17 String str = "This is a string";18 assertThat(str).containsOnlyOnce("string");19 }20}21Example to use containsOnlyOnce() method
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