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How to use getFieldValueFunction method of com.tngtech.jgiven.impl.util.ReflectionUtil class

Best JGiven code snippet using com.tngtech.jgiven.impl.util.ReflectionUtil.getFieldValueFunction

Source:ReflectionUtil.java

...161     */162    public static List<Object> getAllNonStaticFieldValuesFrom( final Class<?> clazz, final Object target, final String errorDescription ){163        return getAllFieldValues( target, getAllNonStaticFields( clazz ), errorDescription );164    }165    private static Function<Field, Object> getFieldValueFunction( final Object target, final String errorDescription ){166        return field -> getFieldValueOrNull( field, target, errorDescription );167    }168    public static Object getFieldValueOrNull( String fieldName, Object target, String errorDescription ){169        try {170            Field field = target.getClass().getDeclaredField( fieldName );171            return getFieldValueOrNull( field, target, errorDescription );172        } catch( Exception e ) {173            log.warn(174                    format( "Not able to access field '%s'." + errorDescription, fieldName ), e );175            return null;176        }177    }178    public static Object getFieldValueOrNull( Field field, Object target, String errorDescription ){179        makeAccessible( field, "" );180        try {181            return field.get( target );182        } catch( IllegalAccessException e ) {183            log.warn(184                    format( "Not able to access field '%s'." + errorDescription, toReadableString( field ) ), e );185            return null;186        }187    }188    public static List<Field> getAllNonStaticFields( Class<?> clazz ){189        final List<Field> result = Lists.newArrayList();190        forEachField( null, clazz, nonStaticField(), new FieldAction() {191            @Override192            public void act( Object target, Field field ) throws Exception{193                result.add( field );194            }195        } );196        return result;197    }198    public static List<Object> getAllFieldValues( Object target, Iterable<Field> fields, String errorDescription ){199        return StreamSupport.stream( fields.spliterator(), false )200                .map( getFieldValueFunction( target, errorDescription ) )201                .collect( Collectors.toList() );202    }203    public static List<String> getAllFieldNames( Iterable<Field> fields ){204        return StreamSupport.stream( fields.spliterator(), false )205                .map( Field::getName )206                .collect( Collectors.toList() );207    }208    public static void setField( Field field, Object object, Object value, String errorDescription ){209        makeAccessible( field, errorDescription );210        try {211            field.set( object, value );212        } catch( IllegalArgumentException e ) {213            log.debug( "Caught exception:", e );214            throw new JGivenInjectionException( "Could not set " + toReadableString( field ) + errorDescription +...

getFieldValueFunction

Using AI Code Generation

1import com.tngtech.jgiven.impl.util.ReflectionUtil;2import org.junit.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class ReflectionUtilTest {5    public void testGetFieldValueFunction() throws NoSuchFieldException {6        ReflectionUtil reflectionUtil = new ReflectionUtil();7        TestClass testClass = new TestClass();8        testClass.setTestString("testString");9        assertThat(reflectionUtil.getFieldValueFunction(TestClass.class, "testString").apply(testClass)).isEqualTo("testString");10    }11    private static class TestClass {12        private String testString;13        public String getTestString() {14            return testString;15        }16        public void setTestString(String testString) {17            this.testString = testString;18        }19    }20}21public class CustomReportFormatter extends AbstractReportFormatter {22    public void formatReport(ReportModel model, File outputDirectory) throws IOException {23    }24}25JGivenReportConfig config = JGivenReportConfig.newInstance()26    .withReportFormatters(new CustomReportFormatter());27JGivenHtml5ReportGenerator.generateReport(config);28public class CustomReportModel extends ReportModel {29}

getFieldValueFunction

Using AI Code Generation

1import com.tngtech.jgiven.impl.util.ReflectionUtil;2import org.junit.Test;3import java.util.function.Function;4import static org.assertj.core.api.Assertions.assertThat;5public class ReflectionUtilTest {6    public void test_getFieldValueFunction() {7        final String fieldName = "value";8        final String fieldValue = "Hello, World!";9        final Function<Object, Object> function = ReflectionUtil.getFieldValueFunction(MyClass.class, fieldName);10        final Object value = function.apply(new MyClass(fieldValue));11        assertThat(value).isEqualTo(fieldValue);12    }13    public void test_getFieldValueFunction_static() {14        final String fieldName = "value";15        final String fieldValue = "Hello, World!";16        final MyClass myClass = new MyClass(fieldValue);17        final Function<Object, Object> function = ReflectionUtil.getFieldValueFunction(MyClass.class, fieldName, true);18        final Object value = function.apply(myClass);19        assertThat(value).isEqualTo(fieldValue);20    }21    public void test_getFieldValueFunction_final() {22        final String fieldName = "value";23        final String fieldValue = "Hello, World!";24        final Function<Object, Object> function = ReflectionUtil.getFieldValueFunction(MyClass.class, fieldName, false, true);25        final Object value = function.apply(new MyClass(fieldValue));26        assertThat(value).isEqualTo(fieldValue);27    }28    private static class MyClass {29        private final String value;30        public MyClass(String value) {31            this.value = value;32        }33    }34}

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