How to use nextFieldNameFrom method of org.assertj.core.util.introspection.FieldSupport class

Best Assertj code snippet using org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom

Source:FieldSupport.java

...99    if (isNestedField(fieldName)) {100      String firstFieldName = popFieldNameFrom(fieldName);101      Iterable<Object> fieldValues = fieldValues(firstFieldName, Object.class, target);102      // extract next sub-field values until reaching the last sub-field103      return fieldValues(nextFieldNameFrom(fieldName), fieldClass, fieldValues);104    }105    return simpleFieldValues(fieldName, fieldClass, target);106  }107  public List<Object> fieldValues(String fieldName, Iterable<?> target) {108    return fieldValues(fieldName, Object.class, target);109  }110  /**111   * Returns a <code>{@link List}</code> containing the values of the given field name, from the elements of the given112   * <code>{@link Iterable}</code>. If the given {@code Iterable} is empty or {@code null}, this method will return an113   * empty {@code List}. This method supports nested fields (e.g. "address.street.number").114   *115   * @param <T> the type of the extracted elements.116   * @param fieldName the name of the field. It may be a nested field. It is left to the clients to validate for117   *          {@code null} or empty.118   * @param fieldClass the expected type of the given field.119   * @param target the given {@code Iterable}.120   * @return an {@code Iterable} containing the values of the given field name, from the elements of the given121   *         {@code Iterable}.122   * @throws IntrospectionError if an element in the given {@code Iterable} does not have a field with a matching name.123   */124  public <T> List<T> fieldValues(String fieldName, Class<T> fieldClass, Object[] target) {125    return fieldValues(fieldName, fieldClass, wrap(target));126  }127  private <T> List<T> simpleFieldValues(String fieldName, Class<T> clazz, Iterable<?> target) {128    return stream(target).map(e -> e == null ? null : fieldValue(fieldName, clazz, e))129                         .collect(collectingAndThen(toList(), Collections::unmodifiableList));130  }131  private String popFieldNameFrom(String fieldNameChain) {132    if (!isNestedField(fieldNameChain)) {133      return fieldNameChain;134    }135    return fieldNameChain.substring(0, fieldNameChain.indexOf(SEPARATOR));136  }137  private String nextFieldNameFrom(String fieldNameChain) {138    if (!isNestedField(fieldNameChain)) {139      return "";140    }141    return fieldNameChain.substring(fieldNameChain.indexOf(SEPARATOR) + 1);142  }143  /*144   * <pre><code class='java'> isNestedField(&quot;address.street&quot;); // true145   * isNestedField(&quot;address.street.name&quot;); // true146   * isNestedField(&quot;person&quot;); // false147   * isNestedField(&quot;.name&quot;); // false148   * isNestedField(&quot;person.&quot;); // false149   * isNestedField(&quot;person.name.&quot;); // false150   * isNestedField(&quot;.person.name&quot;); // false151   * isNestedField(&quot;.&quot;); // false152   * isNestedField(&quot;&quot;); // false</code></pre>153   */154  private boolean isNestedField(String fieldName) {155    return fieldName.contains(SEPARATOR) && !fieldName.startsWith(SEPARATOR) && !fieldName.endsWith(SEPARATOR);156  }157  /**158   * Return the value of field from a target object. The field must not be static or synthetic (since 3.19.0).159   * <p>160   * Return null if field is nested and one of the nested value is null, ex :161   * <pre><code class='java'> fieldValue(race.name, String.class, frodo); // will return null if frodo.race is null</code></pre>162   *163   * @param <T> the type of the extracted value.164   * @param fieldName the name of the field. It may be a nested field. It is left to the clients to validate for165   *          {@code null} or empty.166   * @param target the given object167   * @param fieldClass type of field168   * @return the value of the given field name169   * @throws IntrospectionError if the given target does not have a field with a matching name.170   */171  public <T> T fieldValue(String fieldName, Class<T> fieldClass, Object target) {172    if (target == null) return null;173    if (isNestedField(fieldName)) {174      String outerFieldName = popFieldNameFrom(fieldName);175      Object outerFieldValue = readSimpleField(outerFieldName, Object.class, target);176      // extract next sub-field values until reaching the last sub-field177      return fieldValue(nextFieldNameFrom(fieldName), fieldClass, outerFieldValue);178    }179    return readSimpleField(fieldName, fieldClass, target);180  }181  @SuppressWarnings("unchecked")182  private <T> T readSimpleField(String fieldName, Class<T> clazz, Object target) {183    try {184      Object fieldValue = readField(target, fieldName, allowUsingPrivateFields);185      if (clazz.isPrimitive()) {186        switch (clazz.getSimpleName()) {187        case BYTE:188          Byte byteValue = (byte) fieldValue;189          return (T) byteValue;190        case SHORT:191          Short shortValue = (short) fieldValue;...

nextFieldNameFrom

Using AI Code Generation

1import org.assertj.core.util.introspection.FieldSupport;2import java.util.HashMap;3import java.util.Map;4public class FieldSupportTest {5    public static void main(String[] args) {6        Map<String, Object> map = new HashMap<>();7        map.put("key1", "value1");8        map.put("key2", "value2");9        map.put("key3", "value3");10        map.put("key4", "value4");11        map.put("key5", "value5");12        map.put("key6", "value6");13        map.put("key7", "value7");14        map.put("key8", "value8");15        map.put("key9", "value9");16        map.put("key10", "value10");17        map.put("key11", "value11");18        map.put("key12", "value12");19        map.put("key13", "value13");20        map.put("key14", "value14");21        map.put("key15", "value15");22        map.put("key16", "value16");23        map.put("key17", "value17");24        map.put("key18", "value18");25        map.put("key19", "value19");26        map.put("key20", "value20");27        map.put("key21", "value21");28        map.put("key22", "value22");29        map.put("key23", "value23");30        map.put("key24", "value24");31        map.put("key25", "value25");32        map.put("key26", "value26");33        map.put("key27", "value27");34        map.put("key28", "value28");35        map.put("key29", "value29");36        map.put("key30", "value30");37        map.put("key31", "value31");38        map.put("key32", "value32");39        map.put("key33", "value33");40        map.put("key34", "value34");41        map.put("key35", "value35");42        map.put("key36", "value36");43        map.put("key37", "value37");44        map.put("key38", "value38");45        map.put("key39", "value39");46        map.put("key40", "value40");47        map.put("key41", "value41

nextFieldNameFrom

Using AI Code Generation

1import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;2import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;3import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;4import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;5import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;6import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;7import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;8import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;9import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;10import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;11import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;12import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;13import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;14import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;15import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;16import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;17import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;18import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;19import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;20import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;21import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;22import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;23import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;24import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;25import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;26import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;27import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;28import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;29import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;30import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;31import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;32import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;33import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;34import static org

nextFieldNameFrom

Using AI Code Generation

1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.util.introspection.FieldSupport.nextFieldNameFrom;3public class FieldSupportTest {4    public void testNextFieldNameFrom() {5        String fieldName = "name";6        assertThat(nextFieldNameFrom("get", fieldName)).isEqualTo("getName");7        assertThat(nextFieldNameFrom("is", fieldName)).isEqualTo("isName");8    }9}10[INFO] --- maven-clean-plugin:3.1.0:clean (default-clean) @ assertj-core ---11[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ assertj-core ---12[INFO] --- maven-compiler-plugin:3.8.0:compile (default-compile) @ assertj-core ---13[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ assertj-core ---14[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ assertj-core ---15[INFO] --- maven-surefire-plugin:2.22.1:test (default-test) @ assertj-core ---

nextFieldNameFrom

Using AI Code Generation

1import org.assertj.core.util.introspection.FieldSupport;2public class NextFieldFromObject {3    public static void main(String[] args) {4        FieldSupport fs = new FieldSupport();5        String fieldName = fs.nextFieldNameFrom(new Person("John", "Doe", 30));6        System.out.println(fieldName);7    }8}9class Person {10    private String firstName;11    private String lastName;12    private int age;13    public Person(String firstName, String lastName, int age) {14        this.firstName = firstName;15        this.lastName = lastName;16        this.age = age;

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