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How to use toStringOf method of org.assertj.core.api.Assertions_useRepresentation_Test class

Best Assertj code snippet using org.assertj.core.api.Assertions_useRepresentation_Test.toStringOf

Source:Assertions_useRepresentation_Test.java

...35    }36    private class CustomRepresentation extends StandardRepresentation {37        // override needed to hook specific formatting38        @Override39        public String toStringOf(Object o) {40            if (o instanceof Introspection_getProperty_Test.Example)41                return "Example";42            // fallback to default formatting.43            return super.toStringOf(o);44        }45        // change String representation46        @Override47        protected String toStringOf(String s) {48            return ("$" + s) + "$";49        }50    }51}...

toStringOf

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1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Assertions_useRepresentation_Test {4  public void should_use_toStringOf_representation() {5    String representation = Assertions.useRepresentation(Assertions.toStringOf(Object::toString))6                                     .toStringOf(new Person("John", "Doe"));7    assertThat(representation).isEqualTo("Person[name=John, surname=Doe]");8  }9  static class Person {10    private final String name;11    private final String surname;12    public Person(String name, String surname) {13      this.name = name;14      this.surname = surname;15    }16    public String toString() {17      return "Person[name=" + name + ", surname=" + surname + "]";18    }19  }20}21package org.assertj.core.api;22import static org.assertj.core.api.Assertions.assertThat;23import org.assertj.core.api.Assertions_useRepresentation_Test.Person;24import org.junit.Test;25public class Assertions_useRepresentation_Test {26  public void should_use_custom_representation() {27    String representation = Assertions.useRepresentation(new CustomRepresentation())28                                     .toStringOf(new Person("John", "Doe"));29    assertThat(representation).isEqualTo("Person John Doe");30  }31  static class Person {32    private final String name;33    private final String surname;34    public Person(String name, String surname) {35      this.name = name;36      this.surname = surname;37    }38    public String toString() {39      return "Person[name=" + name + ", surname=" + surname + "]";40    }41  }42  static class CustomRepresentation implements Representation {43    public String toStringOf(Object o) {44      Person person = (Person) o;45      return "Person " + person.name + " " + person.surname;46    }47  }48}

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