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

Best Assertj code snippet using org.assertj.core.condition.MappedCondition.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.Assertions;2import org.assertj.core.condition.MappedCondition;3import org.assertj.core.data.MapEntry;4import org.junit.Test;5import java.util.HashMap;6import java.util.Map;7public class MappedConditionTest {8    public void test() {9        Map<String, String> map = new HashMap<>();10        map.put("key1", "value1");11        map.put("key2", "value2");12        MappedCondition<String, String> condition = new MappedCondition<>(MapEntry.entry("key1", "value1"));13        Assertions.assertThat(map).contains(condition);14    }15}16Expected :{key1=value1, key2=value2}17Actual   :{key2=value2}

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Condition;2import org.assertj.core.condition.MappedCondition;3import org.assertj.core.data.MapEntry;4import java.util.HashMap;5import java.util.Map;6public class MappedConditionExample {7   public static void main(String args[]) {8      Condition<MapEntry> condition = new Condition<MapEntry>("is even") {9         public boolean matches(MapEntry value) {10            return (Integer) value.value % 2 == 0;11         }12      };13      Map<String, Integer> map = new HashMap<>();14      map.put("one", 1);15      map.put("two", 2);16      map.put("three", 3);17      MappedCondition<String, Integer> mappedCondition = MappedCondition.mappedCondition(condition, MapEntry::key);18      System.out.println("Is the condition matched? " + mappedCondition.matches(map.entrySet

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Condition;2import org.assertj.core.condition.MappedCondition;3import java.util.ArrayList;4import java.util.List;5import java.util.Map;6public class MappedConditionExample {7    public static void main(String[] args) {8        List<Map<String, String>> list = new ArrayList<>();9        list.add(Map.of("name", "John", "age", "20"));10        list.add(Map.of("name", "Smith", "age", "25"));11        list.add(Map.of("name", "Peter", "age", "30"));12        Condition<Map<String, String>> ageCondition = new MappedCondition<>(Map::get, "age").is("20");13        list.stream().filter(ageCondition::matches).forEach(System.out::println);14    }15}16{age=20, name=John}

MappedCondition

Using AI Code Generation

1public class MappedConditionExample {2    public static void main(String[] args) {3        Condition<String> condition = new Condition<String>() {4            public boolean matches(String value) {5                return value.length() > 5;6            }7        };8        Condition<String> mappedCondition = MappedCondition.mappedCondition(condition, "length > 5");9        assertThat("abcde").isNot(mappedCondition);10        assertThat("abcdef").is(mappedCondition);11    }12}13	at org.assertj.core.api.ConditionAssert.isNot(ConditionAssert.java:48)14	at MappedConditionExample.main(1.java:19)15	at org.assertj.core.api.ConditionAssert.is(ConditionAssert.java:42)16	at MappedConditionExample.main(1.java:21)17MappedCondition(Condition<? super T> condition, String newDescription)18map(Function<? super T, ? extends U> function)19public class MappedConditionExample {20    public static void main(String[] args) {21        Condition<String> condition = new Condition<String>() {22            public boolean matches(String value) {23                return value.length() > 5;24            }25        };26        Condition<String> mappedCondition = MappedCondition.mappedCondition(condition, "length > 5");27        Condition<String> mappedCondition2 = mappedCondition.map(String::toUpperCase);28        assertThat("abcde").isNot(mappedCondition2);

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Condition;2import org.assertj.core.condition.MappedCondition;3import org.assertj.core.api.Assertions;4class MappedConditionDemo {5   public static void main(String[] args) {6      Condition<String> condition = new Condition<>(str -> str.length() > 10, "length > 10");7      MappedCondition<String, Integer> mappedCondition = condition.mappedCondition(String::length);8      Assertions.assertThat("Hello").is(mappedCondition);9   }10}

MappedCondition

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.condition.MappedCondition;3import java.util.*;4import java.util.function.Function;5public class MappedConditionExample {6   public static void main(String[] args) {7      List<String> list = Arrays.asList("a", "bb", "ccc", "dddd");8      Assertions.assertThat(list).are(MappedCondition.mappedCondition(String::length, Assertions::isGreaterThan, "length is greater than"));9      Assertions.assertThat(list).areNot(MappedCondition.mappedCondition(String::length, Assertions::isGreaterThan, "length is greater than"));10   }11}

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<Integer> greaterThanZero = new Condition<Integer>("greater than zero") {6            public boolean matches(Integer value) {7                return value > 0;8            }9        };10        MappedCondition<Integer, String> mapped = MappedCondition.mappedCondition(greaterThanZero, Object::toString);11        System.out.println(mapped.matches(1));12        System.out.println(mapped.matches(-1));13    }14}15import org.assertj.core.api.Condition;16import org.assertj.core.condition.MappedCondition;17public class MappedConditionExample {18    public static void main(String[] args) {19        Condition<Integer> greaterThanZero = new Condition<Integer>("greater than zero") {20            public boolean matches(Integer value) {21                return value > 0;22            }23        };24        MappedCondition<Integer, String> mapped = MappedCondition.mappedCondition(greaterThanZero, Object::toString);25        System.out.println(mapped.matches(1));26        System.out.println(mapped.matches(-1));27    }28}29import org.assertj.core.api.Condition;30import org.assertj.core.condition.MappedCondition;31public class MappedConditionExample {32    public static void main(String[] args) {33        Condition<Integer> greaterThanZero = new Condition<Integer>("greater than zero") {34            public boolean matches(Integer value) {35                return value > 0;36            }37        };38        MappedCondition<Integer, String> mapped = MappedCondition.mappedCondition(greaterThanZero, Object::toString);39        System.out.println(mapped.matches(1));40        System.out.println(mapped.matches(-1));41    }42}43import org.assertj.core.api.Condition;44import org.assertj.core.condition.MappedCondition;

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<Integer> condition = new Condition<>(i -> i > 0, "positive");6      Condition<Integer> mappedCondition = MappedCondition.mappedCondition(condition, i -> i * i, "square of %s is positive");7      System.out.println(mappedCondition.matches(2));8      System.out.println(mappedCondition.matches(-2));9   }10}11import org.assertj.core.api.Condition;12import org.assertj.core.condition.MappedCondition;13public class MappedConditionExample {14   public static void main(String[] args) {15      Condition<Integer> condition = new Condition<>(i -> i > 0, "positive");16      Condition<Integer> mappedCondition = MappedCondition.mappedCondition(condition, i -> i * i, "square of %s is positive");17      System.out.println(mappedCondition.matches(2));18      System.out.println(mappedCondition.matches(-2));19   }20}

MappedCondition

Using AI Code Generation

1import static org.assertj.core.api.Assertions.*;2import org.assertj.core.condition.MappedCondition;3public class MappedConditionExample {4    public static void main(String[] args) {5        MappedCondition<String, Integer> mappedCondition = MappedCondition.mappedCondition(6                str -> str.length(), greaterThan(5));7        assertThat("Hello").is(mappedCondition);8        assertThat("Hello").isNot(mappedCondition);9    }10}

MappedCondition

Using AI Code Generation

1package org.example;2import org.assertj.core.api.Assertions;3import org.junit.jupiter.api.Test;4import java.util.function.Function;5import static org.assertj.core.api.Assertions.assertThat;6import static org.assertj.core.api.Assertions.catchThrowable;7class AppTest {8    void test() {9        String string = "abc";10        String expected = "ABC";11        Throwable throwable = catchThrowable(() -> assertThat(string).is(mappedCondition(expected)));12        assertThat(throwable).isNotNull();13    }14    private static <T> MappedCondition<T> mappedCondition(T expected) {15        return new MappedCondition<T>(expected, Function.identity()) {16            public boolean matches(T value) {

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