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How to use JGivenInjectionException class of com.tngtech.jgiven.exception package

Best JGiven code snippet using com.tngtech.jgiven.exception.JGivenInjectionException

...5import com.tngtech.jgiven.annotation.ProvidedScenarioState;6import com.tngtech.jgiven.annotation.ScenarioState;7import com.tngtech.jgiven.annotation.ScenarioState.Resolution;8import com.tngtech.jgiven.exception.AmbiguousResolutionException;9import com.tngtech.jgiven.exception.JGivenInjectionException;10import com.tngtech.jgiven.exception.JGivenMissingGuaranteedScenarioStateException;11import com.tngtech.jgiven.exception.JGivenMissingRequiredScenarioStateException;12import com.tngtech.jgiven.impl.util.FieldCache;13import java.lang.reflect.Field;14import java.util.List;15import java.util.Map;16import java.util.concurrent.ConcurrentHashMap;17import org.slf4j.Logger;18import org.slf4j.LoggerFactory;19/**20 * Used by Scenario to inject and read values from objects.21 */22public class ValueInjector {23    private static final Logger log = LoggerFactory.getLogger(ValueInjector.class);24    /**25     * Caches all classes that have been already validated for ambiguous resolution.26     * This avoids duplicate validations of the same class.27     */28    private static final ConcurrentHashMap<Class<?>, Boolean> validatedClasses = new ConcurrentHashMap<>();29    private final ValueInjectorState state = new ValueInjectorState();30    /**31     * @throws AmbiguousResolutionException when multiple fields with the same resolution exist in the given object32     */33    @SuppressWarnings("unchecked")34    public void validateFields(Object object) {35        if (validatedClasses.get(object.getClass()) == Boolean.TRUE) {36            return;37        }38        Map<Object, Field> resolvedFields = Maps.newHashMap();39        for (ScenarioStateField field : getScenarioFields(object)) {40            field.getField().setAccessible(true);41            Resolution resolution = field.getResolution();42            Object key = null;43            if (resolution == Resolution.NAME) {44                key = field.getField().getName();45            } else {46                key = field.getField().getType();47            }48            if (resolvedFields.containsKey(key)) {49                Field existingField = resolvedFields.get(key);50                throw new AmbiguousResolutionException("Ambiguous fields with same " + resolution + " detected. Field 1: "51                        + existingField + ", field 2: " + field.getField());52            }53            resolvedFields.put(key, field.getField());54        }55        validatedClasses.put(object.getClass(), Boolean.TRUE);56    }57    private List<ScenarioStateField> getScenarioFields(Object object) {58        @SuppressWarnings("unchecked")59        List<Field> scenarioFields = FieldCache60                .get(object.getClass())61                .getFieldsWithAnnotation(ScenarioState.class, ProvidedScenarioState.class, ExpectedScenarioState.class);62        return scenarioFields.stream()63                .map(ScenarioStateField.fromField)64                .collect(toList());65    }66    /**67     * @throws JGivenMissingGuaranteedScenarioStateException in case a field is guaranteed68     *                                                     and is not initialized by the finishing stage69     */70    @SuppressWarnings("unchecked")71    public void readValues(Object object) {72        validateFields(object);73        checkGuaranteedStatesAreInitialized(object);74        for (ScenarioStateField field : getScenarioFields(object)) {75            try {76                Object value = field.getField().get(object);77                updateValue(field, value);78                log.debug("Reading value {} from field {}", value, field.getField());79            } catch (IllegalAccessException e) {80                throw new RuntimeException("Error while reading field " + field.getField(), e);81            }82        }83    }84    /**85     * @throws JGivenMissingRequiredScenarioStateException in case a field requires86     *                                                     a value and the value is not present87     */88    @SuppressWarnings("unchecked")89    public void updateValues(Object object) {90        validateFields(object);91        for (ScenarioStateField field : getScenarioFields(object)) {92            Object value = getValue(field);93            if (value != null) {94                try {95                    field.getField().set(object, value);96                } catch (IllegalAccessException e) {97                    throw new RuntimeException("Error while updating field " + field.getField(), e);98                }99                log.debug("Setting field {} to value {}", field.getField(), value);100            } else if (field.isRequired()) {101                throw new JGivenMissingRequiredScenarioStateException(field.getField());102            }103        }104    }105    public <T> void injectValueByType(Class<T> clazz, T value) {106        state.updateValueByType(clazz, value);107    }108    public <T> void injectValueByName(String name, T value) {109        state.updateValueByName(name, value);110    }111    private void updateValue(ScenarioStateField field, Object value) {112        if (field.getResolution() == Resolution.NAME) {113            state.updateValueByName(field.getField().getName(), value);114        } else {115            state.updateValueByType(field.getField().getType(), value);116        }117    }118    private Object getValue(ScenarioStateField field) {119        if (field.getResolution() == Resolution.NAME) {120            return state.getValueByName(field.getField().getName());121        }122        return state.getValueByType(field.getField().getType());123    }124    private void checkGuaranteedStatesAreInitialized(Object instance) {125        for (Field field: FieldCache.get(instance.getClass())126                .getFieldsWithAnnotation(ProvidedScenarioState.class, ScenarioState.class)) {127            if (field.isAnnotationPresent(ProvidedScenarioState.class)) {128                if (field.getAnnotation(ProvidedScenarioState.class).guaranteed()) {129                    checkInitialized(instance, field);130                }131            }132            if (field.isAnnotationPresent(ScenarioState.class)) {133                if (field.getAnnotation(ScenarioState.class).guaranteed()) {134                    checkInitialized(instance, field);135                }136            }137        }138    }139    private void checkInitialized(Object instance, Field field) {140        Object value = null;141        try {142            value = field.get(instance);143        } catch (IllegalAccessException e) {144            throw new JGivenInjectionException("The guaranteed field inside the scenario state cannot be accessed",145                                                e);146        }147        if (value == null) {148            throw new JGivenMissingGuaranteedScenarioStateException(field);149        }150    }151}...

Source: ReflectionUtilTest.java

...3import org.junit.Rule;4import org.junit.Test;5import org.junit.rules.ExpectedException;6import com.tngtech.jgiven.exception.JGivenExecutionException;7import com.tngtech.jgiven.exception.JGivenInjectionException;8public class ReflectionUtilTest {9    @Rule10    public final ExpectedException expectedException = ExpectedException.none();11    static class TestClass {12        private String testField;13        private void testMethod( Integer someArg ) {}14    }15    @Test16    public void injection_exception_is_thrown_if_field_cannot_be_set() throws Exception {17        expectedException.expect( JGivenInjectionException.class );18        ReflectionUtil.setField( TestClass.class.getDeclaredField( "testField" ), new TestClass(), 5, "test description" );19    }20    @Test21    public void makeAccessible_does_not_throw_execptions() throws Exception {22        AccessibleObject stub = new AccessibleObject() {23            @Override24            public void setAccessible( boolean flag ) throws SecurityException {25                throw new SecurityException();26            }27        };28        ReflectionUtil.makeAccessible( stub, "test" );29    }30    @Test31    public void execution_exception_is_thrown_if_method_cannot_be_invoked() throws Exception {...

Source: JGivenInjectionException.java

1package com.tngtech.jgiven.exception;2public class JGivenInjectionException extends RuntimeException {3    private static final long serialVersionUID = 1L;4    public JGivenInjectionException( String message, Exception e ) {5        super( message, e );6    }7}...

JGivenInjectionException

Using AI Code Generation

1import com.tngtech.jgiven.exception.JGivenInjectionException;2public class JGivenInjectionExceptionDemo {3   public static void main(String args[]) {4      JGivenInjectionException obj = new JGivenInjectionException("Exception");5      System.out.println("Exception: " + obj.getMessage());6   }7}

JGivenInjectionException

Using AI Code Generation

1import com.tngtech.jgiven.exception.JGivenInjectionException;2public class JGivenInjectionExceptionDemo {3    public static void main(String[] args) {4        JGivenInjectionException jGivenInjectionException = new JGivenInjectionException("JGivenInjectionException");5        System.out.println(jGivenInjectionException);6    }7}

JGivenInjectionException

Using AI Code Generation

1import com.tngtech.jgiven.exception.JGivenInjectionException;2public class JGivenInjectionExceptionDemo {3   public static void main(String[] args) {4      try {5         throw new JGivenInjectionException("An error occurred");6      } catch (JGivenInjectionException e) {7         System.out.println("JGivenInjectionException caught");8      }9   }10}

JGivenInjectionException

Using AI Code Generation

1import com.tngtech.jgiven.exception.JGivenInjectionException;2public class JGivenInjectionExceptionDemo {3    public static void main(String[] args) {4        try {5            throw new JGivenInjectionException("JGivenInjectionException is thrown");6        } catch (JGivenInjectionException e) {7            System.out.println(e);8        }9    }10}11    at JGivenInjectionExceptionDemo.main(1.java:8)

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