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How to use PotentialAssignment class of org.junit.experimental.theories package
Best junit code snippet using org.junit.experimental.theories.PotentialAssignment
Source:AllMembersSupplier.java 
...10import org.junit.experimental.theories.DataPoint;11import org.junit.experimental.theories.DataPoints;12import org.junit.experimental.theories.ParameterSignature;13import org.junit.experimental.theories.ParameterSupplier;14import org.junit.experimental.theories.PotentialAssignment;15import org.junit.runners.model.FrameworkMethod;16import org.junit.runners.model.TestClass;17/**18 * Supplies Theory parameters based on all public members of the target class.19 */20public class AllMembersSupplier extends ParameterSupplier {21 static class MethodParameterValue extends PotentialAssignment {22 private final FrameworkMethod fMethod;23 private MethodParameterValue(FrameworkMethod dataPointMethod) {24 fMethod= dataPointMethod;25 }26 @Override27 public Object getValue() throws CouldNotGenerateValueException {28 try {29 return fMethod.invokeExplosively(null);30 } catch (IllegalArgumentException e) {31 throw new RuntimeException(32 "unexpected: argument length is checked");33 } catch (IllegalAccessException e) {34 throw new RuntimeException(35 "unexpected: getMethods returned an inaccessible method");36 } catch (Throwable e) {37 throw new CouldNotGenerateValueException();38 // do nothing, just look for more values39 }40 }41 @Override42 public String getDescription() throws CouldNotGenerateValueException {43 return fMethod.getName();44 }45 }46 private final TestClass fClass;47 /**48 * Constructs a new supplier for {@code type}49 */50 public AllMembersSupplier(TestClass type) {51 fClass= type;52 }53 @Override54 public List<PotentialAssignment> getValueSources(ParameterSignature sig) {55 List<PotentialAssignment> list= new ArrayList<PotentialAssignment>();56 addFields(sig, list);57 addSinglePointMethods(sig, list);58 addMultiPointMethods(list);59 return list;60 }61 private void addMultiPointMethods(List<PotentialAssignment> list) {62 for (FrameworkMethod dataPointsMethod : fClass63 .getAnnotatedMethods(DataPoints.class))64 try {65 addArrayValues(dataPointsMethod.getName(), list, dataPointsMethod.invokeExplosively(null));66 } catch (Throwable e) {67 // ignore and move on68 }69 }70 @SuppressWarnings("deprecation")71 private void addSinglePointMethods(ParameterSignature sig,72 List<PotentialAssignment> list) {73 for (FrameworkMethod dataPointMethod : fClass74 .getAnnotatedMethods(DataPoint.class)) {75 Class<?> type= sig.getType();76 if ((dataPointMethod.producesType(type)))77 list.add(new MethodParameterValue(dataPointMethod));78 }79 }80 private void addFields(ParameterSignature sig,81 List<PotentialAssignment> list) {82 for (final Field field : fClass.getJavaClass().getFields()) {83 if (Modifier.isStatic(field.getModifiers())) {84 Class<?> type= field.getType();85 if (sig.canAcceptArrayType(type)86 && field.getAnnotation(DataPoints.class) != null) {87 addArrayValues(field.getName(), list, getStaticFieldValue(field));88 } else if (sig.canAcceptType(type)89 && field.getAnnotation(DataPoint.class) != null) {90 list.add(PotentialAssignment91 .forValue(field.getName(), getStaticFieldValue(field)));92 }93 }94 }95 }96 private void addArrayValues(String name, List<PotentialAssignment> list, Object array) {97 for (int i= 0; i < Array.getLength(array); i++)98 list.add(PotentialAssignment.forValue(name + "[" + i + "]", Array.get(array, i)));99 }100 private Object getStaticFieldValue(final Field field) {101 try {102 return field.get(null);103 } catch (IllegalArgumentException e) {104 throw new RuntimeException(105 "unexpected: field from getClass doesn't exist on object");106 } catch (IllegalAccessException e) {107 throw new RuntimeException(108 "unexpected: getFields returned an inaccessible field");109 }110 }111}...
Source:CustomSuplierTests.java
...11import java.util.List;12import org.junit.experimental.theories.ParameterSignature;13import org.junit.experimental.theories.ParameterSupplier;14import org.junit.experimental.theories.ParametersSuppliedBy;15import org.junit.experimental.theories.PotentialAssignment;16import org.junit.experimental.theories.Theories;17import org.junit.experimental.theories.Theory;18import org.junit.runner.RunWith;19import org.slf4j.Logger;20import org.slf4j.LoggerFactory;21// https://github.com/junit-team/junit4/wiki/Theories22@RunWith(Theories.class)23public class CustomSuplierTests {24 25 private static final Logger LOG = LoggerFactory.getLogger(CustomSuplierTests.class); 26 @Retention(RetentionPolicy.RUNTIME)27 @ParametersSuppliedBy(PrimeNumberSupplier.class)28 public @interface PrimeNumber {29 30 int start();31 32 int count();33 }34 35 public static class PrimeNumberSupplier extends ParameterSupplier {36 @Override37 public List<PotentialAssignment> getValueSources(ParameterSignature sig) throws Throwable {38 PrimeNumber annotation = (PrimeNumber) sig.getAnnotation(PrimeNumber.class);39 List<PotentialAssignment> list = new ArrayList<>();40 int nextValue = annotation.start();41 // check the first possible value42 nextValue = nextValue < 3 ? 3 : nextValue - 1;43 int count = annotation.count();44 // generate desired number of prime values45 while (count > 0) {46 nextValue++;47 if (!isPrime(nextValue)) {48 LOG.debug("Skipped number {}", nextValue);49 continue;50 }51 LOG.info("Adding prime number {}", nextValue);52 list.add(PotentialAssignment.forValue("ints", nextValue));53 count--;54 }55 return list;56 }57 58 /**59 * Checks to see if the requested value is prime.60 * @see http://stackoverflow.com/questions/24006143/generating-a-random-prime-number-in-java61 */62 public static boolean isPrime(int inputNum){63 if (inputNum <= 3 || inputNum % 2 == 0) 64 return inputNum == 2 || inputNum == 3; //this returns false if number is <=1 & true if number = 2 or 365 int divisor = 3;66 while ((divisor <= Math.sqrt(inputNum)) && (inputNum % divisor != 0)) ...
Source:WebDriverSuppliers.java
1package amazon.framework.core;2import org.junit.experimental.theories.ParameterSignature;3import org.junit.experimental.theories.ParameterSupplier;4import org.junit.experimental.theories.ParametersSuppliedBy;5import org.junit.experimental.theories.PotentialAssignment;6import java.lang.annotation.Retention;7import java.lang.annotation.RetentionPolicy;8import java.util.ArrayList;9import java.util.List;10public class WebDriverSuppliers {11 /**12 * Execute the test with multiple browsers while using the JUnit Theories runtime13 *14 * @author Nicolas Rémond (nre)15 */16 @Retention(RetentionPolicy.RUNTIME)17 @ParametersSuppliedBy(AllWebDriversSupplier.class)18 public @interface AllWebDrivers {19 }20 public static class AllWebDriversSupplier extends ParameterSupplier {21 @Override22 public List<PotentialAssignment> getValueSources(final ParameterSignature sig) {23 final List<PotentialAssignment> assignments = new ArrayList<PotentialAssignment>();24 assignments.add(PotentialAssignment.forValue(AbstractWebDriverTestCase.WebDriverKind.Chrome.toString(), AbstractWebDriverTestCase.WebDriverKind.Chrome));25 return assignments;26 }27 }28 @Retention(RetentionPolicy.RUNTIME)29 @ParametersSuppliedBy(SingleWebDriverSupplier.class)30 public @interface SingleWebDriver {31 }32 public static class SingleWebDriverSupplier extends ParameterSupplier {33 @Override34 public List<PotentialAssignment> getValueSources(final ParameterSignature sig) {35 final List<PotentialAssignment> assignments = new ArrayList<PotentialAssignment>();36 assignments.add(PotentialAssignment.forValue(AbstractWebDriverTestCase.WebDriverKind.Chrome.toString(), AbstractWebDriverTestCase.WebDriverKind.Chrome));37 return assignments;38 }39 }40}...
Source:ParameterSupplier.java
...19 * }20 *21 * public static class BetweenSupplier extends <b>ParameterSupplier</b> {22 * @Override23 * public List<<b>PotentialAssignment</b>> getValueSources(<b>ParameterSignature</b> sig) {24 * List<<b>PotentialAssignment</b>> list = new ArrayList<PotentialAssignment>();25 * Between annotation = (Between) sig.getSupplierAnnotation();26 *27 * for (int i = annotation.first(); i <= annotation.last(); i++)28 * list.add(<b>PotentialAssignment</b>.forValue("ints", i));29 * return list;30 * }31 * }32 * </pre>33 * </p>34 *35 * @see org.junit.experimental.theories.ParametersSuppliedBy36 * @see org.junit.experimental.theories.Theories37 * @see org.junit.experimental.theories.FromDataPoints38 */39public abstract class ParameterSupplier {40 public abstract List<PotentialAssignment> getValueSources(ParameterSignature sig) throws Throwable;41}...
Source:TestedOnSupplier.java
2import java.util.ArrayList;3import java.util.List;4import org.junit.experimental.theories.ParameterSignature;5import org.junit.experimental.theories.ParameterSupplier;6import org.junit.experimental.theories.PotentialAssignment;7/**8 * @see org.junit.experimental.theories.suppliers.TestedOn9 * @see org.junit.experimental.theories.ParameterSupplier10 */11public class TestedOnSupplier extends ParameterSupplier {12 @Override13 public List<PotentialAssignment> getValueSources(ParameterSignature sig) {14 List<PotentialAssignment> list = new ArrayList<PotentialAssignment>();15 TestedOn testedOn = sig.getAnnotation(TestedOn.class);16 int[] ints = testedOn.ints();17 for (final int i : ints) {18 list.add(PotentialAssignment.forValue("ints", i));19 }20 return list;21 }22}...
Source:NumberSupplier.java
1package com.packtpub.junit.recap;2import org.junit.experimental.theories.ParameterSignature;3import org.junit.experimental.theories.ParameterSupplier;4import org.junit.experimental.theories.PotentialAssignment;5import java.util.ArrayList;6import java.util.List;7public class NumberSupplier extends ParameterSupplier {8 @Override9 public List<PotentialAssignment>10 getValueSources(ParameterSignature sig) {11 List<PotentialAssignment> list = new ArrayList<PotentialAssignment>();12 list.add(PotentialAssignment.forValue("long", 2L));13 list.add(PotentialAssignment.forValue("float", 5.00f));14 list.add(PotentialAssignment.forValue("double", 89d));15 return list;16 }17};...
Source:StringSupplier.java
1package learn.mutumju.ch01recall;2import org.junit.experimental.theories.ParameterSignature;3import org.junit.experimental.theories.ParameterSupplier;4import org.junit.experimental.theories.PotentialAssignment;5import java.util.ArrayList;6import java.util.List;7public class StringSupplier extends ParameterSupplier {8 @Override9 public List<PotentialAssignment> getValueSources(ParameterSignature sig) {10 List<PotentialAssignment> list = new ArrayList<>();11 list.add(PotentialAssignment.forValue("name1", "one"));12 list.add(PotentialAssignment.forValue("name2", "two"));13 list.add(PotentialAssignment.forValue("name3", "three"));14 return list;15 }16}...
Source:TestedOnBoolSupplier.java
1package org.wikipedia.test.theories;2import org.junit.experimental.theories.ParameterSignature;3import org.junit.experimental.theories.ParameterSupplier;4import org.junit.experimental.theories.PotentialAssignment;5import java.util.Arrays;6import java.util.List;7public class TestedOnBoolSupplier extends ParameterSupplier {8 private static final String NAME = "bools";9 @Override public List<PotentialAssignment> getValueSources(ParameterSignature sig) {10 return Arrays.asList(PotentialAssignment.forValue(NAME, false),11 PotentialAssignment.forValue(NAME, true));12 }13}...
PotentialAssignment
Using AI Code Generation
1import org.junit.experimental.theories.*;2import org.junit.experimental.theories.PotentialAssignment;3import org.junit.experimental.theories.ParameterSignature;4import org.junit.experimental.theories.ParameterSupplier;5import org.junit.experimental.theories.Theories;6import org.junit.experimental.theories.Theory;7import org.junit.runner.RunWith;8import java.util.ArrayList;9import java.util.List;10@RunWith(Theories.class)11public class TestTheory {12 public void testTheory(String s, String t) {13 System.out.println("s="+s+", t="+t);14 }15 public static String[] dataPoints = {"a", "b", "c"};16 public static List<String> dataPoints2 = new ArrayList<String>() {{17 add("d");18 add("e");19 add("f");20 }};21 public static PotentialAssignment[] dataPoints3 = {22 PotentialAssignment.forValue("g", "g"),23 PotentialAssignment.forValue("h", "h"),24 PotentialAssignment.forValue("i", "i"),25 };26 public static ParameterSupplier dataPoints4 = new ParameterSupplier() {27 public List<PotentialAssignment> getValueSources(ParameterSignature sig) {28 List<PotentialAssignment> list = new ArrayList<>();29 list.add(PotentialAssignment.forValue("j", "j"));30 list.add(PotentialAssignment.forValue("k", "k"));31 list.add(PotentialAssignment.forValue("l", "l"));32 return list;33 }34 };35}
PotentialAssignment
Using AI Code Generation
1import java.util.ArrayList;2import java.util.List;3import org.junit.experimental.theories.PotentialAssignment;4public class MyDataPoints {5 public static List<PotentialAssignment> getMyDataPoints() {6 List<PotentialAssignment> list = new ArrayList<PotentialAssignment>();7 list.add(PotentialAssignment.forValue("a", 1));8 list.add(PotentialAssignment.forValue("a", 2));9 list.add(PotentialAssignment.forValue("a", 3));10 return list;11 }12}13import org.junit.experimental.theories.DataPoint;14import org.junit.experimental.theories.Theory;15public class MyTheoryTest {16 public static int x = 1;17 public static int y = 2;18 public static int z = 3;19 public void test(int a) {20 System.out.println(a);21 }22}23import org.junit.experimental.theories.DataPoints;24import org.junit.experimental.theories.Theory;25public class MyTheoryTest2 {26 public static int[] data = new int[] { 1, 2, 3 };27 public void test(int a) {28 System.out.println(a);29 }30}31import org.junit.experimental.theories.DataPoint;32import org.junit.experimental.theories.Theory;33import org.junit.experimental.theories.suppliers.TestedOn;34public class MyTheoryTest3 {35 public static int x = 1;36 public static int y = 2;37 public static int z = 3;38 public void test(@TestedOn(ints = { 1, 2, 3 }) int a) {39 System.out.println(a);40 }41}42import org.junit.experimental.theories.DataPoint;43import org.junit.experimental.theories.Theory;44import org.junit.experimental.theories.suppliers.TestedOn;45public class MyTheoryTest4 {
PotentialAssignment
Using AI Code Generation
1import org.junit.experimental.theories.PotentialAssignment;2import org.junit.experimental.theories.internal.Assignments;3public static PotentialAssignment forInt() {4}5import org.junit.experimental.theories.PotentialAssignment;6import org.junit.experimental.theories.internal.Assignments;7public static PotentialAssignment forInt() {8}9import org.junit.experimental.theories.PotentialAssignment;10import org.junit.experimental.theories.internal.Assignments;11public static PotentialAssignment forInt() {12}13import org.junit.experimental.theories.PotentialAssignment;14import org.junit.experimental.theories.internal.Assignments;15public static PotentialAssignment forInt() {16}17import org.junit.experimental.theories.PotentialAssignment;18import org.junit.experimental.theories.internal.Assignments;19public static PotentialAssignment forInt() {20}21import org.junit.experimental.theories.PotentialAssignment;22import org.junit.experimental.theories.internal.Assignments;23public static PotentialAssignment forInt() {24}25import org.junit.experimental.theories.PotentialAssignment;26import org.junit.experimental
PotentialAssignment
Using AI Code Generation
1public class PotentialAssignmentGenerator implements TestGenerator {2 private static final Logger LOGGER = Logger.getLogger(PotentialAssignmentGenerator.class.getName());3 public List<TestMethod> generateTestMethods(TestClass testClass) {4 List<TestMethod> testMethods = new ArrayList<>();5 for (FrameworkMethod frameworkMethod : testClass.getAnnotatedMethods(Test.class)) {6 List<List<PotentialAssignment>> potentialAssignments = getPotentialAssignments(frameworkMethod);7 for (List<PotentialAssignment> assignments : potentialAssignments) {8 TestMethod testMethod = new TestMethod(frameworkMethod, testClass);9 for (PotentialAssignment assignment : assignments) {10 testMethod.addParameter(assignment.getValue());11 }12 testMethods.add(testMethod);13 }14 }15 return testMethods;16 }17 private List<List<PotentialAssignment>> getPotentialAssignments(FrameworkMethod frameworkMethod) {18 List<ParameterSource> parameterSources = getParameterSources(frameworkMethod);19 List<List<PotentialAssignment>> potentialAssignments = parameterSources.stream()20 .map(ParameterSource::getValueSources)21 .collect(Collectors.toList());22 return Lists.cartesianProduct(potentialAssignments);23 }24 private List<ParameterSource> getParameterSources(FrameworkMethod frameworkMethod) {25 List<ParameterSource> parameterSources = new ArrayList<>();26 for (Annotation[] parameterAnnotations : frameworkMethod.getMethod().getParameterAnnotations()) {27 for (Annotation annotation : parameterAnnotations) {28 ParameterSource parameterSource = getParameterSource(annotation);29 if (parameterSource != null) {30 parameterSources.add(parameterSource);31 }32 }33 }34 return parameterSources;35 }36 private ParameterSource getParameterSource(Annotation annotation) {37 if (annotation instanceof DataPoint) {38 return new DataPointParameterSource((DataPoint) annotation);39 } else if (annotation instanceof DataPoints) {40 return new DataPointsParameterSource((DataPoints) annotation);41 } else if (annotation instanceof FromDataPoints) {
PotentialAssignment
Using AI Code Generation
1import java.util.ArrayList;2import java.util.List;3import org.junit.experimental.theories.PotentialAssignment;4public class TestClass {5 public void testTheory(int x, int y, int z) {6 System.out.println("x = " + x + ", y = " + y + ", z = " + z);7 }8 public static List<PotentialAssignment> x() {9 List<PotentialAssignment> list = new ArrayList<PotentialAssignment>();10 list.add(PotentialAssignment.forValue("x", 1));11 list.add(PotentialAssignment.forValue("x", 2));12 list.add(PotentialAssignment.forValue("x", 3));13 return list;14 }15 public static List<PotentialAssignment> y() {16 List<PotentialAssignment> list = new ArrayList<PotentialAssignment>();17 list.add(PotentialAssignment.forValue("y", 4));18 list.add(PotentialAssignment.forValue("y", 5));19 list.add(PotentialAssignment.forValue("y", 6));20 return list;21 }22 public static List<PotentialAssignment> z() {23 List<PotentialAssignment> list = new ArrayList<PotentialAssignment>();24 list.add(PotentialAssignment.forValue("z", 7));25 list.add(PotentialAssignment.forValue("z", 8));26 list.add(PotentialAssignment.forValue("z", 9));27 return list;28 }29}
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