[SR] Map enum with mapstruct (#16163)
* Added enums for week day, its mapper and test. * Added enums, mapping and tests for case transformation. * Changed test names to follow BDD style. * Renamed test class. * Removed enum, mapper and test for weekdays. Added same for traffic signal. * Moved the source code and tests under its own package. * Added link to article. * Fixed readme * Fixed readme --------- Co-authored-by: sraverkar.encora <sraverkar.encora@centricsoftware.com>
This commit is contained in:
Sachin Raverkar
GitHub
parent
8ac5afda83
commit
6719beae86
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package com.baeldung.mapstruct.enums.mapper;
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import com.baeldung.mapstruct.enums.model.*;
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import org.mapstruct.*;
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import org.mapstruct.factory.Mappers;
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/**
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* The Traffic signal mapper.
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*/
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@Mapper
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public interface TrafficSignalMapper {
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/**
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* The constant INSTANCE.
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*/
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TrafficSignalMapper INSTANCE = Mappers.getMapper(TrafficSignalMapper.class);
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/**
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* Convert traffic signal to integer.
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*
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* @param source the source
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* @return the integer
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*/
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default Integer convertTrafficSignalToInteger(TrafficSignal source) {
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Integer result = null;
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switch (source) {
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case Off:
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result = 0;
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break;
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case Stop:
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result = 1;
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break;
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case Go:
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result = 2;
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break;
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}
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return result;
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}
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/**
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* Maps road sign to traffic signal.
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*
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* @param source the source
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* @return the traffic signal
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*/
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@ValueMapping(target = "Off", source = "Off")
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@ValueMapping(target = "Go", source = "Move")
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@ValueMapping(target = "Stop", source = "Halt")
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TrafficSignal toTrafficSignal(RoadSign source);
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/**
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* Maps string to traffic signal.
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*
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* @param source the source
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* @return the traffic signal
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*/
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@ValueMapping(target = "Off", source = "Off")
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@ValueMapping(target = "Go", source = "Move")
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@ValueMapping(target = "Stop", source = "Halt")
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TrafficSignal stringToTrafficSignal(String source);
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/**
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* Maps a traffic signal to string.
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*
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* @param source the source
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* @return the traffic signal
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*/
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@ValueMapping(target = "Off", source = "Off")
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@ValueMapping(target = "Go", source = "Go")
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@ValueMapping(target = "Stop", source = "Stop")
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String trafficSignalToString(TrafficSignal source);
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/**
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* Maps a traffic signal to number.
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*
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* @param source the source
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* @return the traffic signal number
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*/
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@Mapping(target = "number", source = ".")
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TrafficSignalNumber trafficSignalToTrafficSignalNumber(TrafficSignal source);
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/**
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* Maps traffic signal to simple traffic signal.
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*
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* @param source the source
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* @return the simple traffic signal
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*/
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@ValueMapping(target = "Off", source = "Off")
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@ValueMapping(target = "On", source = "Go")
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@ValueMapping(target = "Off", source = "Stop")
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SimpleTrafficSignal toSimpleTrafficSignal(TrafficSignal source);
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/**
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* Maps traffic signal to simple traffic signal.
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*
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* @param source the source
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* @return the simple traffic signal
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*/
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@ValueMapping(target = "On", source = "Go")
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@ValueMapping(target = "Off", source = MappingConstants.ANY_REMAINING)
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SimpleTrafficSignal toSimpleTrafficSignalWithRemaining(TrafficSignal source);
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/**
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* Maps traffic signal to simple traffic signal.
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*
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* @param source the source
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* @return the simple traffic signal
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*/
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@ValueMapping(target = "On", source = "Go")
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@ValueMapping(target = "Off", source = MappingConstants.ANY_UNMAPPED)
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SimpleTrafficSignal toSimpleTrafficSignalWithUnmapped(TrafficSignal source);
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/**
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* Maps traffic signal with null handling.
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*
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* @param source the source
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* @return the work day
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*/
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@ValueMapping(target = "Off", source = MappingConstants.NULL)
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@ValueMapping(target = "On", source = "Go")
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@ValueMapping(target = MappingConstants.NULL, source = MappingConstants.ANY_UNMAPPED)
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SimpleTrafficSignal toSimpleTrafficSignalWithNullHandling(TrafficSignal source);
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/**
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* Maps simple traffic signal to traffic signal with exception handling.
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*
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* @param source the source
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* @return the work day
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* @throws IllegalArgumentException if {@code source} is {@code Sat} or {@code Sun}.
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*/
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@ValueMapping(target = "On", source = "Go")
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@ValueMapping(target = MappingConstants.THROW_EXCEPTION, source = MappingConstants.NULL)
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@ValueMapping(target = MappingConstants.THROW_EXCEPTION, source = MappingConstants.ANY_UNMAPPED)
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SimpleTrafficSignal toSimpleTrafficSignalWithExceptionHandling(TrafficSignal source);
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/**
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* Apply suffix.
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*
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* @param source the source
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* @return traffic signal suffixed
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.SUFFIX_TRANSFORMATION, configuration = "_Value")
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TrafficSignalSuffixed applySuffix(TrafficSignal source);
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/**
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* Apply prefix.
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*
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* @param source the source
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* @return the traffic signal prefixed
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.PREFIX_TRANSFORMATION, configuration = "Value_")
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TrafficSignalPrefixed applyPrefix(TrafficSignal source);
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/**
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* Strip suffix.
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*
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* @param source the source
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* @return the traffic signal
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.STRIP_SUFFIX_TRANSFORMATION, configuration = "_Value")
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TrafficSignal stripSuffix(TrafficSignalSuffixed source);
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/**
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* Strip prefix.
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*
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* @param source the source
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* @return the traffic signal
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.STRIP_PREFIX_TRANSFORMATION, configuration = "Value_")
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TrafficSignal stripPrefix(TrafficSignalPrefixed source);
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/**
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* Apply lowercase to traffic signal.
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*
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* @param source the source
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* @return the traffic signal lowercase
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.CASE_TRANSFORMATION, configuration = "lower")
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TrafficSignalLowercase applyLowercase(TrafficSignal source);
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/**
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* Apply uppercase to traffic signal.
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*
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* @param source the source
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* @return the traffic signal uppercase
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.CASE_TRANSFORMATION, configuration = "upper")
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TrafficSignalUppercase applyUppercase(TrafficSignal source);
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/**
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* Underscore to string in capital case.
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*
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* @param source the source
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* @return the string
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.CASE_TRANSFORMATION, configuration = "capital")
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String underscoreToCapital(TrafficSignalUnderscore source);
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/**
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* Lowercase to capital traffic signal.
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*
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* @param source the source
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* @return traffic signal
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*/
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@EnumMapping(nameTransformationStrategy = MappingConstants.CASE_TRANSFORMATION, configuration = "capital")
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TrafficSignal lowercaseToCapital(TrafficSignalLowercase source);
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum road signal.
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*/
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public enum RoadSign {
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/**
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* Off signal.
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*/
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Off,
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/**
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* Stop signal.
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*/
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Halt,
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/**
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* Go signal.
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*/
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Move
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum two-state Traffic Signal.
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*/
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public enum SimpleTrafficSignal {
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/**
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* Off signal.
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*/
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Off,
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/**
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* Stop signal.
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*/
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On
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum Traffic Signal.
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*/
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public enum TrafficSignal {
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/**
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* Off signal.
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*/
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Off,
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/**
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* Stop signal.
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*/
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Stop,
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/**
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* Go signal.
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*/
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Go
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum Traffic Signal with lowercase.
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*/
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public enum TrafficSignalLowercase {
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/**
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* Off signal.
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*/
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off,
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/**
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* Stop signal.
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*/
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stop,
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/**
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* Go signal.
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*/
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go
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The traffic signal number.
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*/
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public class TrafficSignalNumber {
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private Integer number;
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/**
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* Gets number.
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*
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* @return the number
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*/
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public Integer getNumber() {
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return number;
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}
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/**
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* Sets number.
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*
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* @param number the number
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*/
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public void setNumber(Integer number) {
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this.number = number;
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}
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum Traffic Signal with prefix.
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*/
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public enum TrafficSignalPrefixed {
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/**
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* Off signal.
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*/
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Value_Off,
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/**
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* Stop signal.
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*/
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Value_Stop,
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/**
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* Go signal.
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*/
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Value_Go
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum Traffic Signal with suffix.
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*/
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public enum TrafficSignalSuffixed {
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/**
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* Off signal.
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*/
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Off_Value,
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/**
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* Stop signal.
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*/
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Stop_Value,
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/**
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* Go signal.
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*/
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Go_Value
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum Traffic Signal with uppercase.
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*/
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public enum TrafficSignalUnderscore {
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/**
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* Off signal.
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*/
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OFF_VALUE,
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/**
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* Stop signal.
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*/
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STOP_VALUE,
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/**
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* Go signal.
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*/
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GO_VALUE
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}
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package com.baeldung.mapstruct.enums.model;
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/**
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* The enum Traffic Signal with uppercase.
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*/
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public enum TrafficSignalUppercase {
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/**
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* Off signal.
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*/
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OFF,
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/**
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* Stop signal.
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*/
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STOP,
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/**
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* Go signal.
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*/
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GO
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}
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package com.baeldung.mapstruct.enums;
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import com.baeldung.mapstruct.enums.mapper.TrafficSignalMapper;
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import com.baeldung.mapstruct.enums.model.*;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.CsvSource;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertThrows;
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/**
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* The traffic signal mapper test.
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*/
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class TrafficSignalMapperUnitTest {
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/**
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* To traffic signal.
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*/
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@Test
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void whenRoadSignIsMapped_thenGetTrafficSignal() {
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RoadSign source = RoadSign.Move;
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TrafficSignal target = TrafficSignalMapper.INSTANCE.toTrafficSignal(source);
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assertEquals(TrafficSignal.Go, target);
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}
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/**
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* String to traffic signal.
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*/
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@Test
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void whenStringIsMapped_thenGetTrafficSignal() {
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String source = RoadSign.Move.name();
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TrafficSignal target = TrafficSignalMapper.INSTANCE.stringToTrafficSignal(source);
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assertEquals(TrafficSignal.Go, target);
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}
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/**
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* String to unmapped traffic signal.
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*/
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@Test
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void whenStringIsUnmapped_thenGetException() {
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String source = "Proceed";
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Exception exception = assertThrows(IllegalArgumentException.class, () -> {
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TrafficSignalMapper.INSTANCE.stringToTrafficSignal(source);
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});
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assertEquals("Unexpected enum constant: " + source, exception.getMessage());
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}
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/**
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* Traffic signal to string.
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*/
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@Test
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void whenTrafficSignalIsMapped_thenGetString() {
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TrafficSignal source = TrafficSignal.Go;
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String targetTrafficSignalStr = TrafficSignalMapper.INSTANCE.trafficSignalToString(source);
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assertEquals("Go", targetTrafficSignalStr);
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}
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/**
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* Traffic signal to int.
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*
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* @param source the traffic signal
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* @param expected the expected traffic signal number
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*/
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@ParameterizedTest
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@CsvSource({"Off,0", "Stop,1"})
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void whenTrafficSignalIsMapped_thenGetInt(TrafficSignal source, int expected) {
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Integer targetTrafficSignalInt = TrafficSignalMapper.INSTANCE.convertTrafficSignalToInteger(source);
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TrafficSignalNumber targetTrafficSignalNumber = TrafficSignalMapper.INSTANCE.trafficSignalToTrafficSignalNumber(source);
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assertEquals(expected, targetTrafficSignalInt.intValue());
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assertEquals(expected, targetTrafficSignalNumber.getNumber().intValue());
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}
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/**
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* Traffic signal to simple traffic signal.
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*
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* @param source the traffic signal
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* @param expected the expected traffic signal
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*/
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@ParameterizedTest
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@CsvSource({"Off,Off", "Go,On", "Stop,Off"})
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void whenTrafficSignalIsMapped_thenGetSimpleTrafficSignal(TrafficSignal source, SimpleTrafficSignal expected) {
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SimpleTrafficSignal target = TrafficSignalMapper.INSTANCE.toSimpleTrafficSignal(source);
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assertEquals(expected, target);
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}
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/**
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* Traffic signal to working day.
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*
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* @param source the traffic signal
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* @param expected the expected traffic signal
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*/
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@ParameterizedTest
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@CsvSource({"Off,Off", "Go,On", "Stop,Off"})
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void whenTrafficSignalIsMappedWithRemaining_thenGetTrafficSignal(TrafficSignal source, SimpleTrafficSignal expected) {
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SimpleTrafficSignal targetTrafficSignal = TrafficSignalMapper.INSTANCE.toSimpleTrafficSignalWithRemaining(source);
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assertEquals(expected, targetTrafficSignal);
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}
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/**
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* Traffic signal to working day.
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*
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* @param source the traffic signal
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* @param expected the expected traffic signal
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*/
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@ParameterizedTest
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@CsvSource({"Off,Off", "Go,On", "Stop,Off"})
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void whenTrafficSignalIsMappedWithUnmapped_thenGetTrafficSignal(TrafficSignal source, SimpleTrafficSignal expected) {
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SimpleTrafficSignal target = TrafficSignalMapper.INSTANCE.toSimpleTrafficSignalWithUnmapped(source);
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assertEquals(expected, target);
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}
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/**
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* Traffic signal to simple traffic signal with null handling.
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*
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* @param source the traffic signal
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* @param expected the expected traffic signal
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*/
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@ParameterizedTest
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@CsvSource({",Off", "Go,On", "Stop,"})
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void whenTrafficSignalIsMappedWithNull_thenGetTrafficSignal(TrafficSignal source, SimpleTrafficSignal expected) {
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SimpleTrafficSignal targetTrafficSignal = TrafficSignalMapper.INSTANCE.toSimpleTrafficSignalWithNullHandling(source);
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assertEquals(expected, targetTrafficSignal);
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}
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/**
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* Traffic signal to traffic signal with exception handling.
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*
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* @param source the traffic signal
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* @param expected the expected traffic signal
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*/
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@ParameterizedTest
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@CsvSource({",", "Go,On", "Stop,"})
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void whenTrafficSignalIsMappedWithException_thenGetTrafficSignal(TrafficSignal source, SimpleTrafficSignal expected) {
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if (source == TrafficSignal.Go) {
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SimpleTrafficSignal targetTrafficSignal = TrafficSignalMapper.INSTANCE.toSimpleTrafficSignalWithExceptionHandling(source);
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assertEquals(expected, targetTrafficSignal);
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} else {
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Exception exception = assertThrows(IllegalArgumentException.class, () -> {
|
||||
TrafficSignalMapper.INSTANCE.toSimpleTrafficSignalWithExceptionHandling(source);
|
||||
});
|
||||
assertEquals("Unexpected enum constant: " + source, exception.getMessage());
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply suffix.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"Off,Off_Value", "Go,Go_Value"})
|
||||
void whenTrafficSignalIsMappedWithSuffix_thenGetTrafficSignalSuffixed(TrafficSignal source, TrafficSignalSuffixed expected) {
|
||||
TrafficSignalSuffixed result = TrafficSignalMapper.INSTANCE.applySuffix(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply prefix.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"Off,Value_Off", "Go,Value_Go"})
|
||||
void whenTrafficSignalIsMappedWithPrefix_thenGetTrafficSignalPrefixed(TrafficSignal source, TrafficSignalPrefixed expected) {
|
||||
TrafficSignalPrefixed result = TrafficSignalMapper.INSTANCE.applyPrefix(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip suffix.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"Off_Value,Off", "Go_Value,Go"})
|
||||
void whenTrafficSignalSuffixedMappedWithStripped_thenGetTrafficSignal(TrafficSignalSuffixed source, TrafficSignal expected) {
|
||||
TrafficSignal result = TrafficSignalMapper.INSTANCE.stripSuffix(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Strip prefix.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"Value_Off,Off", "Value_Stop,Stop"})
|
||||
void whenTrafficSignalPrefixedMappedWithStripped_thenGetTrafficSignal(TrafficSignalPrefixed source, TrafficSignal expected) {
|
||||
TrafficSignal result = TrafficSignalMapper.INSTANCE.stripPrefix(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply lowercase.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"Off,off", "Go,go"})
|
||||
void whenTrafficSignalMappedWithLower_thenGetTrafficSignalLowercase(TrafficSignal source, TrafficSignalLowercase expected) {
|
||||
TrafficSignalLowercase result = TrafficSignalMapper.INSTANCE.applyLowercase(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Apply uppercase.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"Off,OFF", "Go,GO"})
|
||||
void whenTrafficSignalMappedWithUpper_thenGetTrafficSignalUppercase(TrafficSignal source, TrafficSignalUppercase expected) {
|
||||
TrafficSignalUppercase result = TrafficSignalMapper.INSTANCE.applyUppercase(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Underscore to capital.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"OFF_VALUE,Off_Value", "GO_VALUE,Go_Value"})
|
||||
void whenTrafficSignalUnderscoreMappedWithCapital_thenGetStringCapital(TrafficSignalUnderscore source, String expected) {
|
||||
String result = TrafficSignalMapper.INSTANCE.underscoreToCapital(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
|
||||
/**
|
||||
* Lowercase to capital.
|
||||
*
|
||||
* @param source the traffic signal
|
||||
* @param expected the expected result
|
||||
*/
|
||||
@ParameterizedTest
|
||||
@CsvSource({"off,Off", "go,Go"})
|
||||
void whenTrafficSignalLowercaseMappedWithCapital_thenGetTrafficSignal(TrafficSignalLowercase source, TrafficSignal expected) {
|
||||
TrafficSignal result = TrafficSignalMapper.INSTANCE.lowercaseToCapital(source);
|
||||
assertEquals(expected, result);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue