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How to use JGivenMissingRequiredScenarioStateException method of com.tngtech.jgiven.exception.JGivenMissingRequiredScenarioStateException class

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

Source:ValueInjector.java

...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);...

Source:ValueInjectorTest.java

...3import com.tngtech.jgiven.annotation.ExpectedScenarioState;4import com.tngtech.jgiven.annotation.ProvidedScenarioState;5import com.tngtech.jgiven.annotation.ScenarioState;6import com.tngtech.jgiven.exception.JGivenMissingGuaranteedScenarioStateException;7import com.tngtech.jgiven.exception.JGivenMissingRequiredScenarioStateException;8import org.junit.Test;9public class ValueInjectorTest {10    private ValueInjector injector = new ValueInjector();11    @Test(expected = JGivenMissingGuaranteedScenarioStateException.class)12    public void null_provided_field_throws_exception() {13        FakeStage stageObject = new FakeStage(null, null, "");14        injector.readValues(stageObject);15    }16    @Test(expected = JGivenMissingGuaranteedScenarioStateException.class)17    public void null_state_field_throws_exception() throws Throwable {18        FakeStage stageObject = new FakeStage("", null, null);19        injector.readValues(stageObject);20    }21    @Test22    public void initialized_fields_do_not_interrupt_execution() {23        FakeStage stageObject = new FakeStage("", null, "");24        injector.readValues(stageObject);25    }26    @Test(expected = JGivenMissingRequiredScenarioStateException.class)27    public void null_expected_field_throws_exception() {28        FakeStage stageObject = new FakeStage(null, null, "");29        injector.updateValues(stageObject);30    }31    @Test(expected = JGivenMissingRequiredScenarioStateException.class)32    public void null_expected_state_field_throws_exception() {33        FakeStage stageObject = new FakeStage("", "", null);34        injector.updateValues(stageObject);35    }36    @Test37    public void initialized_expected_fields_do_not_interrupt_execution() {38        FakeStage stageObject = new FakeStage("", "", "");39        injector.readValues(stageObject); //update field value in cache40        injector.injectValueByName("providedExpectedString", "Test");41        injector.updateValues(stageObject);42        assertThat(stageObject.providedExpectedString).isEqualTo("Test");43    }44    private class FakeStage {45        @ProvidedScenarioState(guaranteed = true)...

Source:RequiredScenarioStateTest.java

...4import com.tngtech.java.junit.dataprovider.DataProviderRunner;5import com.tngtech.jgiven.annotation.ExpectedScenarioState;6import com.tngtech.jgiven.annotation.JGivenConfiguration;7import com.tngtech.jgiven.annotation.ScenarioState;8import com.tngtech.jgiven.exception.JGivenMissingRequiredScenarioStateException;9import com.tngtech.jgiven.junit.test.BeforeAfterTestStage;10import com.tngtech.jgiven.junit.test.ThenTestStep;11import com.tngtech.jgiven.junit.test.WhenTestStep;12@RunWith( DataProviderRunner.class )13@JGivenConfiguration( TestConfiguration.class )14public class RequiredScenarioStateTest extends ScenarioTest<BeforeAfterTestStage, WhenTestStep, ThenTestStep> {15    static class StageWithMissingScenarioState {16        @ScenarioState( required = true )17        Boolean state;18        public void something() {}19    }20    @Test( expected = JGivenMissingRequiredScenarioStateException.class )21    public void required_states_must_be_present() throws Throwable {22        StageWithMissingScenarioState stage = addStage( StageWithMissingScenarioState.class );23        stage.something();24    }25    static class StageWithMissingExpectedScenarioState {26        @ExpectedScenarioState( required = true )27        Boolean state;28        public void something() {}29    }30    @Test( expected = JGivenMissingRequiredScenarioStateException.class )31    public void required__expected_states_must_be_present() throws Throwable {32        StageWithMissingExpectedScenarioState stage = addStage( StageWithMissingExpectedScenarioState.class );33        stage.something();34    }35    static class ProviderStage {36        @ScenarioState37        Boolean state;38        public void provide() {39            this.state = true;40        }41    }42    @Test43    public void scenarios_pass_if_required_state_is_provided_by_another_stage() throws Throwable {44        ProviderStage stage = addStage( ProviderStage.class );...

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