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How to use MappedCondition class of org.assertj.core.condition package

Best Assertj code snippet using org.assertj.core.condition.MappedCondition

Source:MappedConditionTest.java

...15import static java.lang.System.lineSeparator;16import static org.assertj.core.api.BDDAssertions.then;17import static org.assertj.core.api.BDDAssertions.thenNullPointerException;18import static org.assertj.core.condition.AllOf.allOf;19import static org.assertj.core.condition.MappedCondition.mappedCondition;20import java.util.Optional;21import java.util.function.Function;22import org.assertj.core.api.Condition;23import org.assertj.core.description.Description;24import org.junit.jupiter.api.Test;25class MappedConditionTest {26  private static final String INNER_CONDITION_DESCRIPTION = "isString and BAR";27  private static final String BAR = "bar";28  private static final String FOO = "foo";29  private final static Condition<String> isBarString = new Condition<>(s -> BAR.equals(s), INNER_CONDITION_DESCRIPTION);30  private final static String BAR_CONDITION_DESCRIPTION = format("mapped%n" +31                                                                 "   using: ::toString%n" +32                                                                 "   from: <StringBuilder> " + BAR + "%n" +33                                                                 "   to:   <String> " + BAR + "%n" +34                                                                 "   then checked:%n" +35                                                                 "      " + INNER_CONDITION_DESCRIPTION);36  private final static String BAR_CONDITION_DESCRIPTION_PLAIN = format("mapped%n" +37                                                                       "   from: <StringBuilder> " + BAR + "%n" +38                                                                       "   to:   <String> " + BAR + "%n" +39                                                                       "   then checked:%n" +40                                                                       "      " + INNER_CONDITION_DESCRIPTION);41  private final static String FOO_CONDITION_DESCRIPTION = format("mapped%n" +42                                                                 "   using: ::toString%n" +43                                                                 "   from: <StringBuilder> " + FOO + "%n" +44                                                                 "   to:   <String> " + FOO + "%n" +45                                                                 "   then checked:%n" +46                                                                 "      " + INNER_CONDITION_DESCRIPTION);47  private final static String FOO_CONDITION_DESCRIPTION_STATUS = format("[â] mapped%n" +48                                                                        "   using: ::toString%n" +49                                                                        "   from: <StringBuilder> a -%n" +50                                                                        "   to:   <String> a -%n" +51                                                                        "   then checked:%n" +52                                                                        "   [â] all of:[%n" +53                                                                        "      [â] has -,%n" +54                                                                        "      [â] is longer than 4%n" +55                                                                        "   ]%n");56  @Test57  void mappedCondition_withDescription_works() {58    // WHEN59    Condition<StringBuilder> mappedCondition = mappedCondition(StringBuilder::toString, isBarString, "%stoString", "::");60    // THEN61    then(mappedCondition.matches(new StringBuilder(BAR))).isTrue();62    then(mappedCondition).hasToString(BAR_CONDITION_DESCRIPTION);63    then(mappedCondition.matches(new StringBuilder(FOO))).isFalse();64    then(mappedCondition).hasToString(FOO_CONDITION_DESCRIPTION);65  }66  @Test67  void mappedCondition_withoutDescription_works() {68    // WHEN69    Condition<StringBuilder> mappedCondition = mappedCondition(StringBuilder::toString, isBarString);70    // THEN71    then(mappedCondition.matches(new StringBuilder(BAR))).isTrue();72    then(mappedCondition).hasToString(BAR_CONDITION_DESCRIPTION_PLAIN);73  }74  @Test75  void mappedCondition_with_description_and_null_condition_should_throw_NPE() {76    // GIVEN77    Condition<String> nullCondition = null;78    // WHEN/THEN79    thenNullPointerException().isThrownBy(() -> mappedCondition(StringBuilder::toString, nullCondition, "::toString"))80                              .withMessage("The given condition should not be null");81  }82  @Test83  void mappedCondition_with_description_and_null_mapping_function_should_throw_NPE() {84    thenNullPointerException().isThrownBy(() -> mappedCondition(null, isBarString, "::toString"))85                              .withMessage("The given mapping function should not be null");86  }87  @Test88  void mappedCondition_without_description_and_null_condition_should_throw_NPE() {89    // GIVEN90    Condition<String> nullCondition = null;91    // WHEN/THEN92    thenNullPointerException().isThrownBy(() -> mappedCondition(StringBuilder::toString, nullCondition))93                              .withMessage("The given condition should not be null");94  }95  @Test96  void mappedCondition_without_description_and_null_mapping_function_should_throw_NPE() {97    thenNullPointerException().isThrownBy(() -> mappedCondition(null, isBarString))98                              .withMessage("The given mapping function should not be null");99  }100  @Test101  void mappedCondition_with_null_description_and_should_throw_NPE() {102    // GIVEN103    String nullDescription = null;104    // WHEN/THEN105    thenNullPointerException().isThrownBy(() -> mappedCondition(StringBuilder::toString, isBarString, nullDescription))106                              .withMessage("The given mappingDescription should not be null");107  }108  @Test109  void mappedCondition_should_handle_null_values_in_description() {110    // GIVEN111    Condition<Object> isNull = new Condition<>(o -> o == null, "is null");112    MappedCondition<Object, Object> mapped = mappedCondition(Function.identity(), isNull, "identity");113    // WHEN114    mapped.matches(null);115    // THEN116    then(mapped).hasToString(format("mapped%n" +117                                    "   using: identity%n" +118                                    "   from: null%n" +119                                    "   to:   null%n" +120                                    "   then checked:%n" +121                                    "      is null   "));122  }123  @Test124  void example() {125    // GIVEN126    Condition<String> hasLineSeparator = new Condition<>(text -> text.contains(lineSeparator()), "has lineSeparator");...

Source:MappedCondition.java

...24 * <p>25 * Example:26 * <pre><code class='java'> Condition&lt;String&gt; hasLineSeparator = new Condition&lt;&gt;(t -&gt; t.contains(System.lineSeparator()), "has lineSeparator");27 *28 * Condition&lt;Optional&lt;String&gt;&gt; optionalWithLineSeparator = MappedCondition.mappedCondition(Optional::get, hasLineSeparator, "optional value has lineSeparator");29 *30 * // assertion succeeds31 * assertThat(Optional.of("a" + System.lineSeparator())).is(optionalWithLineSeparator);32 * // returns true33 * optionalWithLineSeparator.matches(Optional.of("a" + System.lineSeparator()));34 *35 * // assertion fails36 * assertThat(Optional.of("a")).is(optionalWithLineSeparator);37 * // returns false38 * optionalWithLineSeparator.matches(Optional.of("a"));</code></pre>39 *40 * @param <FROM> the type of object this condition accepts.41 * @param <TO> the type of object the nested condition accepts.42 *43 * @author Stefan Bischof44 */45@Beta46public class MappedCondition<FROM, TO> extends Condition<FROM> {47  private Condition<TO> condition;48  private Function<FROM, TO> mapping;49  private String mappingDescription;50  /**51   * Creates a new <code>{@link MappedCondition}</code>.52   * <p>53   * Example:54   * <pre><code class='java'> Condition&lt;String&gt; hasLineSeparator = new Condition&lt;&gt;(t -&gt; t.contains(System.lineSeparator()), "has lineSeparator");55   *56   * Condition&lt;Optional&lt;String&gt;&gt; optionalWithLineSeparator = MappedCondition.mappedCondition(Optional::get, hasLineSeparator, "optional value has lineSeparator");57   *58   * // assertion succeeds59   * assertThat(Optional.of("a" + System.lineSeparator())).is(optionalWithLineSeparator);60   * // returns true61   * optionalWithLineSeparator.matches(Optional.of("a" + System.lineSeparator()));62   *63   * // assertion fails64   * assertThat(Optional.of("a")).is(optionalWithLineSeparator);65   * // returns false66   * optionalWithLineSeparator.matches(Optional.of("a"));</code></pre>67     * <p>68   * Note that the mappingDescription argument follows {@link String#format(String, Object...)} syntax.69   *70   * @param <FROM> the type of object the given condition accept.71   * @param <TO> the type of object the nested condition accept.72   * @param mapping the Function that maps the value to test to the a value for the nested condition.73   * @param condition the nested condition to evaluate.74   * @param mappingDescription describes the mapping, follows {@link String#format(String, Object...)} syntax.75   * @param args for describing the mapping as in {@link String#format(String, Object...)} syntax.76   * @return the created {@code MappedCondition}.77   * @throws NullPointerException if the given condition is {@code null}.78   * @throws NullPointerException if the given mapping is {@code null}.79   */80  public static <FROM, TO> MappedCondition<FROM, TO> mappedCondition(Function<FROM, TO> mapping, Condition<TO> condition,81                                                                     String mappingDescription, Object... args) {82    requireNonNull(mappingDescription, "The given mappingDescription should not be null");83    return new MappedCondition<>(mapping, condition, format(mappingDescription, args));84  }85  /**86   * Creates a new <code>{@link MappedCondition}</code>87   *88   * @param <FROM> the type of object the given condition accept.89   * @param <TO> the type of object the nested condition accept.90   * @param mapping the Function that maps the value to test to the a value for the nested condition.91   * @param condition the nested condition to evaluate.92   * @return the created {@code MappedCondition}.93   * @throws NullPointerException if the given condition is {@code null}.94   * @throws NullPointerException if the given mapping is {@code null}.95   */96  public static <FROM, TO> MappedCondition<FROM, TO> mappedCondition(Function<FROM, TO> mapping, Condition<TO> condition) {97    return mappedCondition(mapping, condition, "");98  }99  private MappedCondition(Function<FROM, TO> mapping, Condition<TO> condition, String mappingDescription) {100    requireNonNull(condition, "The given condition should not be null");101    requireNonNull(mapping, "The given mapping function should not be null");102    this.mapping = mapping;103    this.mappingDescription = mappingDescription;104    this.condition = condition;105  }106  /**107   * Maps the value with the given function and verifies that it satisfies the nested <code>{@link Condition}</code>.108   *109   * @param value the value to map110   * @return {@code true} if the given mapped value satisfies the nested condition; {@code false} otherwise.111   */112  @Override113  public boolean matches(FROM value) {...

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Condition;2import org.assertj.core.condition.MappedCondition;3import java.util.List;4import static org.assertj.core.api.Assertions.assertThat;5public class MappedConditionExample {6    public static void main(String[] args) {7        List<String> names = List.of("John", "Paul", "George", "Ringo");8        Condition<String> startsWithJ = new Condition<>(name -> name.startsWith("J"), "starts with J");9        Condition<String> startsWithP = new Condition<>(name -> name.startsWith("P"), "starts with P");10        Condition<String> startsWithG = new Condition<>(name -> name.startsWith("G"), "starts with G");11        Condition<String> startsWithR = new Condition<>(name -> name.startsWith("R"), "starts with R");12        assertThat(names).haveAtLeastOne(startsWithJ);13        assertThat(names).haveAtLeastOne(startsWithP);14        assertThat(names).haveAtLeastOne(startsWithG);15        assertThat(names).haveAtLeastOne(startsWithR);16        Condition<String> startsWith = new MappedCondition<>(name -> name.substring(0, 1), startsWithJ, startsWithP, startsWithG, startsWithR);17        assertThat(names).haveAtLeastOne(startsWith);18    }19}

MappedCondition

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import org.assertj.core.condition.MappedCondition;3import org.junit.Test;4public class MappedConditionTest {5    public void testMappedCondition() {6        MappedCondition<String, Integer> mappedCondition = new MappedCondition<>(s -> s.length(), n -> n > 5);7        assertThat("Hello").is(mappedCondition);8        assertThat("Hi").isNot(mappedCondition);9    }10}

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Condition;2import org.assertj.core.condition.MappedCondition;3public class MappedConditionExample {4    public static void main(String[] args) {5        Condition<String> condition = new MappedCondition<>(s -> s.length(), new Condition<>(i -> i > 5, "string length > 5"));6        System.out.println(condition.matches("AssertJ"));7    }8}

MappedCondition

Using AI Code Generation

1package org.example;2import org.assertj.core.api.Condition;3import org.assertj.core.condition.MappedCondition;4import java.util.Arrays;5import java.util.List;6import static org.assertj.core.api.Assertions.assertThat;7import static org.assertj.core.api.Assertions.atIndex;8import static org.assertj.core.api.Assertions.entry;9public class App {10    public static void main(String[] args) {11        List<Integer> numbers = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);12        assertThat(numbers).are(new MappedCondition<>(i -> i % 2 == 0, "even"));

MappedCondition

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.condition.MappedCondition.mappedCondition;3import static org.assertj.core.api.Assertions.within;4public class MappedConditionExample {5    public static void main(String args[]) {6        Condition<Double> isCloseToZero = mappedCondition(7            (Double d) -> d,8            (Double d) -> assertThat(d).isCloseTo(0.0, within(0.1))9        );10        assertThat(0.05).is(isCloseToZero);11    }12}

MappedCondition

Using AI Code Generation

1import org.assertj.core.condition.MappedCondition;2import org.assertj.core.api.Condition;3import org.assertj.core.api.Assertions;4public class MappedConditionExample {5   public static void main(String[] args) {6      Condition<String> condition = new Condition<String>(str -> str.startsWith("A"), "Starts with A");7      MappedCondition<String, String> mappedCondition = new MappedCondition<>(condition, str -> str.substring(0, 2));8      Assertions.assertThat("ABC").is(mappedCondition);9      Assertions.assertThat("BCD").isNot(mappedCondition);10   }11}

MappedCondition

Using AI Code Generation

1package org.assertj.core.condition;2import org.assertj.core.api.Condition;3import org.assertj.core.api.SoftAssertions;4import org.assertj.core.api.ThrowableAssert.ThrowingCallable;5import org.testng.annotations.Test;6import static org.assertj.core.api.Assertions.assertThat;7import static org.assertj.core.api.Assertions.assertThatThrownBy;8import static org.assertj.core.api.Assertions.catchThrowable;9import static org.assertj.core.api.Assertions.fail;10import static org.assertj.core.api.Assertions.catchThrowableOfType;11public class MappedConditionTest {12	public void testMappedCondition() {13		SoftAssertions softly = new SoftAssertions();14		Condition<String> condition1 = new Condition<String>(s -> s.length() > 5, "string length is greater than 5");15		Condition<String> condition2 = new Condition<String>(s -> s.length() < 10, "string length is less than 10");16		Condition<String> condition3 = new Condition<String>(s -> s.contains("a"), "string contains a");17		Condition<String> condition4 = new Condition<String>(s -> s.contains("b"), "string contains b");18		Condition<String> condition5 = new Condition<String>(s -> s.contains("c"), "string contains c");19		MappedCondition<String, Integer> length = new MappedCondition<>(String::length, "string length");20		MappedCondition<String, Character> firstChar = new MappedCondition<>(s -> s.charAt(0), "first char");21		Condition<String> condition6 = new Condition<String>(s -> s.contains("a"), "string contains a");22		Condition<String> condition7 = new Condition<String>(s -> s.contains("b"), "string contains b");23		Condition<String> condition8 = new Condition<String>(s -> s.contains("c"), "string contains c");24		softly.assertThat("abcdef").is(condition1).is(condition2).is(condition3).is(condition4).is(condition5)25				.is(length.isGreaterThan(4)).is(length.isLessThan(7)).is(firstChar.isEqualTo('a'))26				.is(firstChar.isNotEqualTo('b')).is(firstChar.isIn('a', 'b', 'c'))27				.is(firstChar.isNotIn('d', 'e', 'f')).is(firstChar.isIn('a', 'b', 'c'))28				.is(firstChar.isNotIn('d', 'e', '

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Condition;2import org.assertj.core.condition.MappedCondition;3import java.util.function.Function;4public class MappedConditionDemo {5   public static void main(String[] args) {6      Condition<String> condition = new Condition<>(s -> s.startsWith("A"), "starts with A");7      MappedCondition<String, Integer> mappedCondition = new MappedCondition<>(condition, String::length);8      System.out.println("Result: " + mappedCondition.matches("ABC"));9   }10}11import org.assertj.core.api.Condition;12import org.assertj.core.condition.MappedCondition;13import java.util.function.Function;14public class MappedConditionDemo {15   public static void main(String[] args) {16      Condition<String> condition = new Condition<>(s -> s.startsWith("A"), "starts with A");17      MappedCondition<String, Integer> mappedCondition = new MappedCondition<>(condition, String::length);18      System.out.println("Result: " + mappedCondition.matches("BCD"));19   }20}21AssertJ - AbstractAssert isNotNull()22AssertJ - AbstractAssert isNull()23AssertJ - AbstractAssert hasFieldOrPropertyWithValue()24AssertJ - AbstractAssert hasFieldOrProperty()25AssertJ - AbstractAssert hasMessage()26AssertJ - AbstractAssert hasMessageContaining()27AssertJ - AbstractAssert hasMessageStartingWith()28AssertJ - AbstractAssert hasMessageEndingWith()29AssertJ - AbstractAssert hasMessageMatching()30AssertJ - AbstractAssert hasCause()31AssertJ - AbstractAssert hasCauseInstanceOf()32AssertJ - AbstractAssert hasNoCause()33AssertJ - AbstractAssert hasStackTraceContaining()34AssertJ - AbstractAssert hasSameClassAs()

MappedCondition

Using AI Code Generation

1package org.kodejava.example.assertj;2import org.assertj.core.api.Condition;3import org.assertj.core.condition.MappedCondition;4import java.util.Arrays;5import java.util.List;6public class MappedConditionExample {7    public static void main(String[] args) {8        List<Person> persons = Arrays.asList(9                new Person("John", 30),10                new Person("Jane", 25),11                new Person("Peter", 35),12                new Person("Mark", 30));13        Condition<Person> age30 = new MappedCondition<>(14                person -> person.getAge(), age -> age == 30);15        org.assertj.core.api.Assertions.assertThat(persons)16                .are(age30);17    }18}19class Person {20    private String name;21    private int age;22    public Person(String name, int age) {23        this.name = name;24        this.age = age;25    }26    public String getName() {27        return name;28    }29    public int getAge() {30        return age;31    }32}33at org.assertj.core.error.ConditionAndGroupGenericParameterTypeShouldBeTheSame.create(ConditionAndGroupGenericParameterTypeShouldBeTheSame.java:45)34at org.assertj.core.error.ConditionAndGroupGenericParameterTypeShouldBeTheSame.create(ConditionAndGroupGenericParameterTypeShouldBeTheSame.java:28)

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