How to use extractProperty method of org.assertj.core.api.AssertionsForClassTypes class

Best Assertj code snippet using org.assertj.core.api.AssertionsForClassTypes.extractProperty

Source:CustomAssertJ.java

...1211	  // ------------------------------------------------------------------------------------------------------1212	  // properties methods : not assertions but here to have a single entry point to all AssertJ features.1213	  // ------------------------------------------------------------------------------------------------------1214	  /**1215	   * Only delegate to {@link Properties#extractProperty(String)} so that Assertions offers a full feature entry point1216	   * to1217	   * all AssertJ features (but you can use {@link Properties} if you prefer).1218	   * <p>1219	   * Typical usage is to chain <code>extractProperty</code> with <code>from</code> method, see examples below :1220	   *1221	   * <pre><code class='java'> // extract simple property values having a java standard type (here String)1222	   * assertThat(extractProperty(&quot;name&quot;, String.class).from(fellowshipOfTheRing))1223	   *           .contains(&quot;Boromir&quot;, &quot;Gandalf&quot;, &quot;Frodo&quot;, &quot;Legolas&quot;)1224	   *           .doesNotContain(&quot;Sauron&quot;, &quot;Elrond&quot;);1225	   *1226	   * // extracting property works also with user's types (here Race)1227	   * assertThat(extractProperty(&quot;race&quot;, String.class).from(fellowshipOfTheRing))1228	   *           .contains(HOBBIT, ELF).doesNotContain(ORC);1229	   *1230	   * // extract nested property on Race1231	   * assertThat(extractProperty(&quot;race.name&quot;, String.class).from(fellowshipOfTheRing))1232	   *           .contains(&quot;Hobbit&quot;, &quot;Elf&quot;)1233	   *           .doesNotContain(&quot;Orc&quot;);</code></pre>1234	   * @param <T> the type of value to extract.1235	   * @param propertyName the name of the property to be read from the elements of a {@code Iterable}. It may be a nested1236	   *          property (e.g. "address.street.number").1237	   * @param propertyType the type of property to extract1238	   * @return the created {@code Properties}.1239	   * @throws NullPointerException if the given property name is {@code null}.1240	   * @throws IllegalArgumentException if the given property name is empty.1241	   */1242	  public static <T> Properties<T> extractProperty(String propertyName, Class<T> propertyType) {1243	    return Properties.extractProperty(propertyName, propertyType);1244	  }1245	  /**1246	   * Only delegate to {@link Properties#extractProperty(String)} so that Assertions offers a full feature entry point1247	   * to1248	   * all AssertJ features (but you can use {@link Properties} if you prefer).1249	   * <p>1250	   * Typical usage is to chain <code>extractProperty</code> with <code>from</code> method, see examples below :1251	   *1252	   * <pre><code class='java'> // extract simple property values, as no type has been defined the extracted property will be considered as Object1253	   * // to define the real property type (here String) use extractProperty(&quot;name&quot;, String.class) instead.1254	   * assertThat(extractProperty(&quot;name&quot;).from(fellowshipOfTheRing))1255	   *           .contains(&quot;Boromir&quot;, &quot;Gandalf&quot;, &quot;Frodo&quot;, &quot;Legolas&quot;)1256	   *           .doesNotContain(&quot;Sauron&quot;, &quot;Elrond&quot;);1257	   *1258	   * // extracting property works also with user's types (here Race), even though it will be considered as Object1259	   * // to define the real property type (here String) use extractProperty(&quot;name&quot;, Race.class) instead.1260	   * assertThat(extractProperty(&quot;race&quot;).from(fellowshipOfTheRing)).contains(HOBBIT, ELF).doesNotContain(ORC);1261	   *1262	   * // extract nested property on Race1263	   * assertThat(extractProperty(&quot;race.name&quot;).from(fellowshipOfTheRing)).contains(&quot;Hobbit&quot;, &quot;Elf&quot;).doesNotContain(&quot;Orc&quot;); </code></pre>1264	   *1265	   * @param propertyName the name of the property to be read from the elements of a {@code Iterable}. It may be a nested1266	   *          property (e.g. "address.street.number").1267	   * @throws NullPointerException if the given property name is {@code null}.1268	   * @throws IllegalArgumentException if the given property name is empty.1269	   * @return the created {@code Properties}.1270	   */1271	  public static Properties<Object> extractProperty(String propertyName) {1272	    return Properties.extractProperty(propertyName);1273	  }1274	  /**1275	   * Utility method to build nicely a {@link Tuple} when working with {@link IterableAssert#extracting(String...)} or1276	   * {@link ObjectArrayAssert#extracting(String...)}1277	   *1278	   * @param values the values stored in the {@link Tuple}1279	   * @return the built {@link Tuple}1280	   */1281	  public static Tuple tuple(Object... values) {1282	    return Tuple.tuple(values);1283	  }1284	  /**1285	   * Globally sets whether1286	   * <code>{@link org.assertj.core.api.AbstractIterableAssert#extracting(String) IterableAssert#extracting(String)}</code>...

Source:Assertions.java

...1342  // ------------------------------------------------------------------------------------------------------1343  // properties methods : not assertions but here to have a single entry point to all AssertJ features.1344  // ------------------------------------------------------------------------------------------------------1345  /**1346   * Only delegate to {@link Properties#extractProperty(String)} so that Assertions offers a full feature entry point1347   * to1348   * all AssertJ features (but you can use {@link Properties} if you prefer).1349   * <p>1350   * Typical usage is to chain <code>extractProperty</code> with <code>from</code> method, see examples below :1351   *1352   * <pre><code class='java'> // extract simple property values having a java standard type (here String)1353   * assertThat(extractProperty(&quot;name&quot;, String.class).from(fellowshipOfTheRing))1354   *           .contains(&quot;Boromir&quot;, &quot;Gandalf&quot;, &quot;Frodo&quot;, &quot;Legolas&quot;)1355   *           .doesNotContain(&quot;Sauron&quot;, &quot;Elrond&quot;);1356   *1357   * // extracting property works also with user's types (here Race)1358   * assertThat(extractProperty(&quot;race&quot;, String.class).from(fellowshipOfTheRing))1359   *           .contains(HOBBIT, ELF).doesNotContain(ORC);1360   *1361   * // extract nested property on Race1362   * assertThat(extractProperty(&quot;race.name&quot;, String.class).from(fellowshipOfTheRing))1363   *           .contains(&quot;Hobbit&quot;, &quot;Elf&quot;)1364   *           .doesNotContain(&quot;Orc&quot;);</code></pre>1365   * @param <T> the type of value to extract.1366   * @param propertyName the name of the property to be read from the elements of a {@code Iterable}. It may be a nested1367   *          property (e.g. "address.street.number").1368   * @param propertyType the type of property to extract1369   * @return the created {@code Properties}.1370   * @throws NullPointerException if the given property name is {@code null}.1371   * @throws IllegalArgumentException if the given property name is empty.1372   */1373  public static <T> Properties<T> extractProperty(String propertyName, Class<T> propertyType) {1374    return Properties.extractProperty(propertyName, propertyType);1375  }1376  /**1377   * Only delegate to {@link Properties#extractProperty(String)} so that Assertions offers a full feature entry point1378   * to1379   * all AssertJ features (but you can use {@link Properties} if you prefer).1380   * <p>1381   * Typical usage is to chain <code>extractProperty</code> with <code>from</code> method, see examples below :1382   *1383   * <pre><code class='java'> // extract simple property values, as no type has been defined the extracted property will be considered as Object1384   * // to define the real property type (here String) use extractProperty(&quot;name&quot;, String.class) instead.1385   * assertThat(extractProperty(&quot;name&quot;).from(fellowshipOfTheRing))1386   *           .contains(&quot;Boromir&quot;, &quot;Gandalf&quot;, &quot;Frodo&quot;, &quot;Legolas&quot;)1387   *           .doesNotContain(&quot;Sauron&quot;, &quot;Elrond&quot;);1388   *1389   * // extracting property works also with user's types (here Race), even though it will be considered as Object1390   * // to define the real property type (here String) use extractProperty(&quot;name&quot;, Race.class) instead.1391   * assertThat(extractProperty(&quot;race&quot;).from(fellowshipOfTheRing)).contains(HOBBIT, ELF).doesNotContain(ORC);1392   *1393   * // extract nested property on Race1394   * assertThat(extractProperty(&quot;race.name&quot;).from(fellowshipOfTheRing)).contains(&quot;Hobbit&quot;, &quot;Elf&quot;).doesNotContain(&quot;Orc&quot;); </code></pre>1395   *1396   * @param propertyName the name of the property to be read from the elements of a {@code Iterable}. It may be a nested1397   *          property (e.g. "address.street.number").1398   * @throws NullPointerException if the given property name is {@code null}.1399   * @throws IllegalArgumentException if the given property name is empty.1400   * @return the created {@code Properties}.1401   */1402  public static Properties<Object> extractProperty(String propertyName) {1403    return Properties.extractProperty(propertyName);1404  }1405  /**1406   * Utility method to build nicely a {@link Tuple} when working with {@link IterableAssert#extracting(String...)} or1407   * {@link ObjectArrayAssert#extracting(String...)}1408   *1409   * @param values the values stored in the {@link Tuple}1410   * @return the built {@link Tuple}1411   */1412  public static Tuple tuple(Object... values) {1413    return Tuple.tuple(values);1414  }1415  /**1416   * Globally sets whether1417   * <code>{@link org.assertj.core.api.AbstractIterableAssert#extracting(String) IterableAssert#extracting(String)}</code>...

extractProperty

Using AI Code Generation

1import static org.assertj.core.api.AssertionsForClassTypes.extractProperty;2import java.util.ArrayList;3import java.util.List;4public class Test {5    public static void main(String[] args) {6        List<Person> persons = new ArrayList<Person>();7        persons.add(new Person("John", "Doe"));8        persons.add(new Person("Jane", "Doe"));9        Iterable<String> firstNames = extractProperty("firstName", String.class).from(persons);10        System.out.println(firstNames);11    }12}13class Person {14    private String firstName;15    private String lastName;16    public Person(String firstName, String lastName) {17        this.firstName = firstName;18        this.lastName = lastName;19    }20    public String getFirstName() {21        return firstName;22    }23    public String getLastName() {24        return lastName;25    }26}

extractProperty

Using AI Code Generation

1import static org.assertj.core.api.AssertionsForClassTypes.extractProperty;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.api.Assertions;5import org.assertj.core.api.ListAssert;6import org.assertj.core.api.ObjectAssert;7import org.assertj.core.api.ObjectArrayAssert;8import org.assertj.core.api.ObjectEnumerableAssert;9import org.assertj.core.api.ObjectGroupAssert;10import org.assertj.core.api.ObjectProviderAssert;11import org.junit.Test;12public class AssertjTest {13    public void test() {14        List<String> list = new ArrayList<>();15        list.add("hello");16        list.add("world");17        ListAssert<String> listAssert = Assertions.assertThat(list);18        ObjectAssert<String> objectAssert = listAssert.extracting("hello");19        ObjectArrayAssert<String> objectArrayAssert = objectAssert.asArray();20        ObjectEnumerableAssert<String> objectEnumerableAssert = objectArrayAssert.as("hello");21        ObjectGroupAssert<String> objectGroupAssert = objectEnumerableAssert.contains("hello");22        ObjectProviderAssert<String> objectProviderAssert = objectGroupAssert.as("hello");23        Assertions.assertThat(objectProviderAssert).isNotNull();24    }25}26	at org.assertj.core.api.Assertions.fail(Assertions.java:1187)27	at org.assertj.core.api.Assertions.fail(Assertions.java:1182)28	at org.assertj.core.api.Assertions.assertThat(Assertions.java:1128)29	at com.mycompany.app.AssertjTest.test(AssertjTest.java:25)

extractProperty

Using AI Code Generation

1import static org.assertj.core.api.AssertionsForClassTypes.extractProperty;2import java.util.ArrayList;3import java.util.List;4public class ExtractProperty {5	public static void main(String[] args) {6		List<Employee> list = new ArrayList<>();7		list.add(new Employee(1, "John", "Dev"));8		list.add(new Employee(2, "Tom", "QA"));9		list.add(new Employee(3, "Mike", "Admin"));10		List<String> names = extractProperty("name").from(list);11		System.out.println(names);12	}13}

extractProperty

Using AI Code Generation

1import static org.assertj.core.api.AssertionsForClassTypes.extractProperty;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.api.Assertions;5import org.assertj.core.api.ListAssert;6public class ExtractProperty {7    public static void main(String[] args) {8        List<Name> names = new ArrayList<>();9        names.add(new Name("John", "Doe"));10        names.add(new Name("Jane", "Doe"));11        ListAssert<String> listAssert = Assertions.assertThat(extractProperty("firstName", String.class).from(names));12        listAssert.containsExactly("John", "Jane");13    }14}15class Name {16    private String firstName;17    private String lastName;18    public Name(String firstName, String lastName) {19        this.firstName = firstName;20        this.lastName = lastName;21    }22    public String getFirstName() {23        return firstName;24    }25    public String getLastName() {26        return lastName;27    }28}

extractProperty

Using AI Code Generation

1package org.example;2import static org.assertj.core.api.AssertionsForClassTypes.extractProperty;3import java.util.ArrayList;4import java.util.List;5import org.junit.Test;6public class AssertJExample {7    public void testExtractProperty() {8        List<String> list = new ArrayList<>();9        list.add("one");10        list.add("two");11        list.add("three");12        List<Object> result = extractProperty("length", String.class).from(list);13        System.out.println(result);14    }15}

extractProperty

Using AI Code Generation

1import org.assertj.core.api.AssertionsForClassTypes;2import org.assertj.core.api.AssertionsForClassTypes.*;3import org.assertj.core.api.AssertionsForInterfaceTypes.*;4public class 1 {5	public static void main(String[] args) {6		Person person = new Person("John", "Doe", 30);7		String firstName = AssertionsForClassTypes.extractProperty("firstName", String.class).from(person);8		System.out.println(firstName);9	}10}11import org.assertj.core.api.AssertionsForInterfaceTypes;12import org.assertj.core.api.AssertionsForInterfaceTypes.*;13import org.assertj.core.api.AssertionsForInterfaceTypes.*;14public class 2 {15	public static void main(String[] args) {16		List<Person> persons = new ArrayList<Person>();17		persons.add(new Person("John", "Doe", 30));18		persons.add(new Person("Jane", "Doe", 25));19		persons.add(new Person("Jack", "Doe", 20));20		List<String> firstNames = AssertionsForInterfaceTypes.extractProperty("firstName", String.class).from(persons);21		System.out.println(firstNames);22	}23}24import org.assertj.core.api.AssertionsForInterfaceTypes;25import org.assertj.core.api.AssertionsForInterfaceTypes.*;26import org.assertj.core.api.AssertionsForInterfaceTypes.*;27public class 3 {28	public static void main(String[] args) {29		List<Person> persons = new ArrayList<Person>();30		persons.add(new Person("John", "Doe", 30));31		persons.add(new Person("Jane", "Doe", 25));32		persons.add(new Person("Jack", "Doe", 20));33		List<String> firstNames = AssertionsForInterfaceTypes.extractProperty("firstName",

extractProperty

Using AI Code Generation

1import org.assertj.core.api.AssertionsForClassTypes;2public class AssertionsForClassTypesExample {3    public static void main(String[] args) {4        Employee employee = new Employee(1, "John", "Smith", 2500.00);5        Double salary = AssertionsForClassTypes.extractProperty("salary", Double.class).from(employee);6        System.out.println("Salary of employee is: " + salary);7    }8}9import org.assertj.core.api.AssertionsForClassTypes;10import java.util.ArrayList;11import java.util.List;12public class AssertionsForClassTypesExample {13    public static void main(String[] args) {14        List<Employee> employees = new ArrayList<>();15        employees.add(new Employee(1, "John", "Smith", 2500.00));16        employees.add(new Employee(2, "Jane", "Doe", 3000.00));17        employees.add(new Employee(3, "Jack", "Johnson", 3500.00));18        List<Double> salaries = AssertionsForClassTypes.extractProperty("salary", Double.class).from(employees);19        System.out.println("Salaries of employees are: " + salaries);20    }21}

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