Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use signatures method of org.junit.experimental.theories.ParameterSignature class

Best junit code snippet using org.junit.experimental.theories.ParameterSignature.signatures

Source:Assignments.java

...27     * assigned.28     */29    public static Assignments allUnassigned(Method testMethod,30            TestClass testClass) throws Exception {31        List<ParameterSignature> signatures;32        signatures = ParameterSignature.signatures(testClass33                .getOnlyConstructor());34        signatures.addAll(ParameterSignature.signatures(testMethod));35        return new Assignments(new ArrayList<PotentialAssignment>(),36                signatures, testClass);37    }38    public boolean isComplete() {39        return fUnassigned.size() == 0;40    }41    public ParameterSignature nextUnassigned() {42        return fUnassigned.get(0);43    }44    public Assignments assignNext(PotentialAssignment source) {45        List<PotentialAssignment> assigned = new ArrayList<PotentialAssignment>(46                fAssigned);47        assigned.add(source);48        return new Assignments(assigned, fUnassigned.subList(1, fUnassigned49                .size()), fClass);50    }51    public Object[] getActualValues(int start, int stop, boolean nullsOk)52            throws CouldNotGenerateValueException {53        Object[] values = new Object[stop - start];54        for (int i = start; i < stop; i++) {55            Object value = fAssigned.get(i).getValue();56            if (value == null && !nullsOk) {57                throw new CouldNotGenerateValueException();58            }59            values[i - start] = value;60        }61        return values;62    }63    public List<PotentialAssignment> potentialsForNextUnassigned()64            throws InstantiationException, IllegalAccessException {65        ParameterSignature unassigned = nextUnassigned();66        return getSupplier(unassigned).getValueSources(unassigned);67    }68    public ParameterSupplier getSupplier(ParameterSignature unassigned)69            throws InstantiationException, IllegalAccessException {70        ParameterSupplier supplier = getAnnotatedSupplier(unassigned);71        if (supplier != null) {72            return supplier;73        }74        return new AllMembersSupplier(fClass);75    }76    public ParameterSupplier getAnnotatedSupplier(ParameterSignature unassigned)77            throws InstantiationException, IllegalAccessException {78        ParametersSuppliedBy annotation = unassigned79                .findDeepAnnotation(ParametersSuppliedBy.class);80        if (annotation == null) {81            return null;82        }83        return annotation.value().newInstance();84    }85    public Object[] getConstructorArguments(boolean nullsOk)86            throws CouldNotGenerateValueException {87        return getActualValues(0, getConstructorParameterCount(), nullsOk);88    }89    public Object[] getMethodArguments(boolean nullsOk)90            throws CouldNotGenerateValueException {91        return getActualValues(getConstructorParameterCount(),92                fAssigned.size(), nullsOk);93    }94    public Object[] getAllArguments(boolean nullsOk)95            throws CouldNotGenerateValueException {96        return getActualValues(0, fAssigned.size(), nullsOk);97    }98    private int getConstructorParameterCount() {99        List<ParameterSignature> signatures = ParameterSignature100                .signatures(fClass.getOnlyConstructor());101        int constructorParameterCount = signatures.size();102        return constructorParameterCount;103    }104    public Object[] getArgumentStrings(boolean nullsOk)105            throws CouldNotGenerateValueException {106        Object[] values = new Object[fAssigned.size()];107        for (int i = 0; i < values.length; i++) {108            values[i] = fAssigned.get(i).getDescription();109        }110        return values;111    }112}...

Source:ParameterSignatureTest.java

...30    @Theory31    public void getType(Method method, int index) {32        assumeTrue(index < method.getParameterTypes().length);33        assertEquals(method.getParameterTypes()[index], ParameterSignature34                .signatures(method).get(index).getType());35    }36    public void foo(@TestedOn(ints = {1, 2, 3}) int x) {37    }38    @Test39    public void getAnnotations() throws SecurityException,40            NoSuchMethodException {41        Method method = getClass().getMethod("foo", int.class);42        List<Annotation> annotations = ParameterSignature.signatures(method)43                .get(0).getAnnotations();44        assertThat(annotations,45                CoreMatchers.<TestedOn>hasItem(isA(TestedOn.class)));46    }47    48    public void intMethod(int param) {49    }50    51    public void integerMethod(Integer param) {52    }53    54    public void numberMethod(Number param) {55    }56    @Test57    public void primitiveTypesShouldBeAcceptedAsWrapperTypes() throws Exception {58        List<ParameterSignature> signatures = ParameterSignature59                .signatures(getClass().getMethod("integerMethod", Integer.class));60        ParameterSignature integerSignature = signatures.get(0);61        assertTrue(integerSignature.canAcceptType(int.class));62    }63    64    @Test65    public void primitiveTypesShouldBeAcceptedAsWrapperTypeAssignables() throws Exception {66        List<ParameterSignature> signatures = ParameterSignature67                .signatures(getClass().getMethod("numberMethod", Number.class));68        ParameterSignature numberSignature = signatures.get(0);69        assertTrue(numberSignature.canAcceptType(int.class));70    }71    72    @Test73    public void wrapperTypesShouldBeAcceptedAsPrimitiveTypes() throws Exception {74        List<ParameterSignature> signatures = ParameterSignature75                .signatures(getClass().getMethod("intMethod", int.class));76        ParameterSignature intSignature = signatures.get(0);77        assertTrue(intSignature.canAcceptType(Integer.class));78    }79}...

signatures

Using AI Code Generation

1import org.junit.experimental.theories.DataPoint;2import org.junit.experimental.theories.ParameterSignature;3import org.junit.experimental.theories.ParameterSupplier;4import org.junit.experimental.theories.Theories;5import org.junit.experimental.theories.Theory;6import org.junit.runner.RunWith;7import java.util.ArrayList;8import java.util.List;9@RunWith(Theories.class)10public class ParameterSupplierTest {11    public static int[] intArray = {1, 2, 3, 4, 5};12    public static String[] stringArray = {"A", "B", "C", "D", "E"};13    public static Integer[] integerArray = {1, 2, 3, 4, 5};14    public static Character[] characterArray = {'A', 'B', 'C', 'D', 'E'};15    public static List<String> stringList = new ArrayList<String>() {{16        add("A");17        add("B");18        add("C");19        add("D");20        add("E");21    }};22    public static List<Integer> integerList = new ArrayList<Integer>() {{23        add(1);24        add(2);25        add(3);26        add(4);27        add(5);28    }};29    public static List<Character> characterList = new ArrayList<Character>() {{30        add('A');31        add('B');32        add('C');33        add('D');34        add('E');35    }};36    public void testTheory(ParameterSignature signature) {37        System.out.println(signature);38    }39    public static class MyParameterSupplier extends ParameterSupplier {40        public List getValues(ParameterSignature sig) {41            return null;42        }43    }44}

signatures

Using AI Code Generation

1package org.junit.experimental.theories;2import org.junit.Test;3import org.junit.experimental.theories.DataPoint;4import org.junit.experimental.theories.DataPoints;5import org.junit.experimental.theories.ParameterSignature;6import org.junit.experimental.theories.Theories;7import org.junit.experimental.theories.Theory;8import org.junit.runner.RunWith;9import java.lang.reflect.Method;10import java.util.Arrays;11import java.util.List;12import static org.junit.Assert.assertEquals;13import static org.junit.Assert.assertTrue;14@RunWith(Theories.class)15public class TheoriesTest {16    public static int INT = 5;17    public static String STRING = "Five";18    public static int[] INTS = { 1, 2, 3 };19    public static String[] STRINGS = { "one", "two", "three" };20    public void testInts(@FromDataPoints("ints") int i) {21        assertTrue(i > 0);22        assertTrue(i < 4);23    }24    public void testStrings(@FromDataPoints("strings") String s) {25        assertTrue(s.length() > 0);26        assertTrue(s.length() < 5);27    }28    public void testIntAndString(@FromDataPoints("ints") int i, @FromDataPoints("strings") String s) {29        assertEquals(i, s.length());30    }31    public void testIntAndStringWithExplicitName(@FromDataPoints("ints") int i,32            @FromDataPoints("strings") String s) {33        assertEquals(i, s.length());34    }

signatures

Using AI Code Generation

1import org.junit.experimental.theories.ParameterSignature;2import org.junit.experimental.theories.ParameterSupplier;3import org.junit.experimental.theories.Theories;4import org.junit.experimental.theories.Theory;5import org.junit.runner.RunWith;6import java.lang.reflect.Method;7import java.util.ArrayList;8import java.util.List;9@RunWith(Theories.class)10public class ParameterSupplierTest {11    public void test(@Param String param1, @Param String param2) {12        System.out.println(param1 + " " + param2);13    }14    public static class Param extends ParameterSupplier {15        public List<Object> getValueSources(ParameterSignature sig) {16            List<Object> params = new ArrayList<>();17            try {18                Method method = sig.getDeclaringType().getMethod(sig.getMethod().getName());19                Param annotation = method.getAnnotation(Param.class);20                if (annotation != null) {21                    for (String value : annotation.value()) {22                        params.add(value);23                    }24                }25            } catch (NoSuchMethodException e) {26                e.printStackTrace();27            }28            return params;29        }30    }31}

signatures

Using AI Code Generation

1public class ParameterSignatureTest {2    public void testParameterSignature(@FromDataPoints("data") int i) {3        System.out.println(i);4    }5    public static int[] data = {1, 2, 3, 4, 5};6}7import org.junit.experimental.theories.ParameterSignature;8import org.junit.experimental.theories.ParameterSupplier;9import org.junit.experimental.theories.PotentialAssignment;10import org.junit.experimental.theories.Theories;11import org.junit.experimental.theories.Theory;12import org.junit.runner.RunWith;13import java.util.ArrayList;14import java.util.List;15@RunWith(Theories.class)16public class ParameterSignatureTest {17    public void testParameterSignature(@FromDataPoints("data") int i) {18        System.out.println(i);19    }20    public static int[] data = {1, 2, 3, 4, 5};21}22public class ParameterSupplier extends org.junit.experimental.theories.ParameterSupplier {23    public List<PotentialAssignment> getValueSources(ParameterSignature sig) {24        List<PotentialAssignment> list = new ArrayList<>();25        list.add(PotentialAssignment.forValue("i", 1));26        list.add(PotentialAssignment.forValue("i", 2));27        list.add(PotentialAssignment.forValue("i", 3));28        list.add(PotentialAssignment.forValue("i", 4));29        list.add(PotentialAssignment.forValue("i", 5));30        return list;31    }32}33import org.junit.experimental.theories.ParameterSignature;34import org.junit.experimental.theories.ParameterSupplier;35import org.junit.experimental.theories.PotentialAssignment;36import org.junit.experimental.theories.Theories;37import org.junit.experimental.theories.Theory;38import org.junit.runner.RunWith;39import java.util.ArrayList;

signatures

Using AI Code Generation

1public class ParameterSignatureTest {2   public static int INT_VALUE = 5;3   public static String STRING_VALUE = "Hello";4   public static int[] INT_ARRAY_VALUE = { 1, 2, 3 };5   public void testParameterSignature(6     @FromDataPoints("INT_VALUE") int intValue,7     @FromDataPoints("STRING_VALUE") String stringValue,8     @FromDataPoints("INT_ARRAY_VALUE") int[] intArrayValue) {9      System.out.println("intValue=" + intValue + ", stringValue=" + stringValue10        + ", intArrayValue=" + Arrays.toString(intArrayValue));11   }12}13public void testParameterSignature(14  @FromDataPoints("INT_VALUE") int intValue,15  @FromDataPoints("STRING_VALUE") String stringValue,16  @FromDataPoints("INT_ARRAY_VALUE") int[] intArrayValue) {17   System.out.println("intValue=" + intValue + ", stringValue=" + stringValue18     + ", intArrayValue=" + Arrays.toString(intArrayValue));19}20public void testParameterSignature(21  @FromDataPoints("INT_VALUE") int intValue,22  @FromDataPoints("STRING_VALUE") String stringValue,23  @FromDataPoints("INT_ARRAY_VALUE") int[] intArrayValue) {24   System.out.println("intValue=" + intValue + ", stringValue=" + stringValue25     + ", intArrayValue=" + Arrays.toString(intArrayValue));26}27public void testParameterSignature(28  @FromDataPoints("INT_VALUE") int intValue,29  @FromDataPoints("STRING_VALUE") String stringValue,

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.