How to use FieldUtils class of org.assertj.core.util.introspection package

Best Assertj code snippet using org.assertj.core.util.introspection.FieldUtils

Source:FieldSupport.java

...18import static java.util.stream.Collectors.toList;19import static org.assertj.core.util.ArrayWrapperList.wrap;20import static org.assertj.core.util.IterableUtil.isNullOrEmpty;21import static org.assertj.core.util.Streams.stream;22import static org.assertj.core.util.introspection.FieldUtils.readField;23import java.lang.reflect.Field;24import java.util.Collections;25import java.util.List;26import org.assertj.core.configuration.ConfigurationProvider;27import org.assertj.core.util.VisibleForTesting;28/**29 * Utility methods for fields access.30 *31 * @author Joel Costigliola32 */33public enum FieldSupport {34  EXTRACTION(true), EXTRACTION_OF_PUBLIC_FIELD_ONLY(false), COMPARISON(true);35  private static final String CHAR = "char";36  private static final String BOOLEAN = "boolean";...

FieldUtils

Using AI Code Generation

1import static org.assertj.core.util.introspection.FieldUtils.*;2public class FieldUtilsExample {3  public void test() throws Exception {4    Person person = new Person("John", "Doe");5    Object firstName = readFieldValue(person, "firstName");6    assertThat(firstName).isEqualTo("John");7  }8  private static class Person {9    private String firstName;10    private String lastName;11    public Person(String firstName, String lastName) {12      this.firstName = firstName;13      this.lastName = lastName;14    }15  }16}

FieldUtils

Using AI Code Generation

1import org.assertj.core.util.introspection.FieldUtils;2import java.lang.reflect.Field;3public class FieldUtilsTest {4    public static void main(String[] args) {5        Field[] fields = FieldUtils.getAllFieldsIn(FieldUtilsTest.class);6        for (Field field : fields) {7            System.out.println(field.getName());8        }9    }10    private String a = "a";11    private String b = "b";12    private String c = "c";13    private String d = "d";14    private String e = "e";15}16import org.assertj.core.util.introspection.FieldUtils;17import java.lang.reflect.Field;18public class FieldUtilsTest {19    public static void main(String[] args) {20        FieldUtils.setField(FieldUtilsTest.class, "a", "aa");21        System.out.println(a);22    }23    private static String a = "a";24    private String b = "b";25    private String c = "c";26    private String d = "d";27    private String e = "e";28}29import org.assertj.core.util.introspection.FieldUtils;30import java.lang.reflect.Field;31public class FieldUtilsTest {32    public static void main(String[] args) {33        FieldUtils.setStaticField(FieldUtilsTest.class, "a", "aa");34        System.out.println(a);35    }36    private static String a = "a";37    private String b = "b";38    private String c = "c";

FieldUtils

Using AI Code Generation

1package org.assertj.core.util.introspection;2import java.lang.reflect.Field;3public class FieldUtils {4  public static Object readFieldValue(Object target, String fieldName) {5    Field field = getField(target.getClass(), fieldName);6    return readFieldValue(target, field);7  }8  public static Object readFieldValue(Object target, Field field) {9    try {10      return field.get(target);11    } catch (IllegalAccessException e) {12      throw new RuntimeException("Unable to read value of field " + field.getName(), e);13    }14  }15  public static Field getField(Class<?> clazz, String fieldName) {16    Field field = null;17    try {18      field = clazz.getDeclaredField(fieldName);19    } catch (NoSuchFieldException e) {20    }21    if (field != null) {22      field.setAccessible(true);23      return field;24    }25    if (clazz.getSuperclass() != null) {26      return getField(clazz.getSuperclass(), fieldName);27    }28    throw new RuntimeException("Unable to find field " + fieldName + " in " + clazz.getName());29  }30  public static void writeFieldValue(Object target, String fieldName, Object value) {31    Field field = getField(target.getClass(), fieldName);32    writeFieldValue(target, field, value);33  }34  public static void writeFieldValue(Object target, Field field, Object value) {35    try {36      field.set(target, value);37    } catch (IllegalAccessException e) {38      throw new RuntimeException("Unable to write value of field " + field.getName(), e);39    }40  }41}

FieldUtils

Using AI Code Generation

1import org.assertj.core.util.introspection.FieldUtils;2import java.lang.reflect.Field;3public class FieldUtilsDemo {4    public static void main(String[] args) throws Exception {5        FieldUtilsDemo demo = new FieldUtilsDemo();6        demo.getFieldValue();7        demo.setFieldValue();8    }9    public void getFieldValue() throws Exception {10        Class<?> clazz = Class.forName("org.assertj.core.util.introspection.FieldUtilsDemo");11        Field field = clazz.getDeclaredField("fieldValue");12        Object value = FieldUtils.readField(field, this);13        System.out.println("Value of field is: " + value);14    }15    public void setFieldValue() throws Exception {16        Class<?> clazz = Class.forName("org.assertj.core.util.introspection.FieldUtilsDemo");17        Field field = clazz.getDeclaredField("fieldValue");18        FieldUtils.writeField(field, this, "new value");19        System.out.println("Value of field is: " + fieldValue);20    }21    private String fieldValue = "old value";22}

FieldUtils

Using AI Code Generation

1public void testGetPrivateFieldValue() throws Exception {2    FieldUtils fieldUtils = new FieldUtils();3    Object fieldValue = fieldUtils.getPrivateFieldValue("value", "abc");4    assertThat(fieldValue).isEqualTo("abc");5}6public void testSetPrivateFieldValue() throws Exception {7    FieldUtils fieldUtils = new FieldUtils();8    fieldUtils.setPrivateFieldValue("value", new StringBuffer("abc"), "def");9    assertThat(new StringBuffer("abc").toString()).isEqualTo("def");10}

FieldUtils

Using AI Code Generation

1    public void shouldReadFieldValue() {2        User user = new User(1L, "John", "Doe");3        Object value = FieldUtils.readFieldValue(user, "id");4        assertThat(value).isNotNull();5        assertThat(value).isInstanceOf(Long.class);6        assertThat(((Long) value).longValue()).isEqualTo(1L);7        assertThat(value.toString()).isEqualTo("1");8    }9    public void shouldReadFieldValueWithType() {10        User user = new User(1L, "John", "Doe");11        Long value = FieldUtils.readFieldValue(user, "id", Long.class);12        assertThat(value).isEqualTo(1L);13    }14    public void shouldReadStaticFieldValue() {15        Object value = FieldUtils.readStaticFieldValue(User.class, "count");16        assertThat(value).isNotNull();17        assertThat(value).isInstanceOf(Integer.class);18        assertThat(((Integer) value).intValue()).isEqualTo(0);19        assertThat(value.toString()).isEqualTo("0");20    }21    public void shouldReadStaticFieldValueWithType() {22        Integer value = FieldUtils.readStaticFieldValue(User.class, "count", Integer.class);23        assertThat(value).isEqualTo(0);24    }25    public void shouldWriteFieldValue() {26        User user = new User(1L, "John", "D

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