Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! Join TestMu Conference

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) {

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.