Junit5 @ParameterizedTest How to pass array as one of parameter

Junit5 @ParameterizedTest How to pass array as one of parameter

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Junit5 @ParameterizedTest How to pass array as one of parameter
Tag : java , By : Cesar Sanz
Date : November 28 2020, 03:01 PM

help you fix your problem I have a test in which I want to pass three parameters: , Small correction, in
return ((String) source).split("\\s*,\\s*");
@CsvSource("abc, 123, foo; bar")
import org.junit.jupiter.params.converter.ArgumentConversionException;
import org.junit.jupiter.params.converter.SimpleArgumentConverter;

public class StringArrayConverter extends SimpleArgumentConverter {

    protected Object convert(Object source, Class<?> targetType) throws ArgumentConversionException {
        if (source instanceof String && String[].class.isAssignableFrom(targetType)) {
            return ((String) source).split("\\s*;\\s*");
        } else {
            throw new IllegalArgumentException("Conversion from " + source.getClass() + " to "
                                               + targetType + " not supported.");

@CsvSource("abc, 123, foo; bar")
void test(String column1, int column2, @ConvertWith(StringArrayConverter.class) String[] column3) {
    assertEquals(column1, "abc");
    assertEquals(column2, 123);
    assertEquals(column3[0], "foo");
    assertEquals(column3[1], "bar");

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How to pass a list as a JUnit5's parameterized test parameter?

Tag : java , By : Praetoriansentry
Date : March 29 2020, 07:55 AM
To fix this issue I want to parameterize my JUnit5 tests using three parameters: string, string and list. , There is no reason to use a hack as suggested by StefanE.
void shouldGetDataBit(int first, String second, List<String> third) {

static Stream<Arguments> generateData() {
    return Stream.of(
        Arguments.of(1, "foo", Arrays.asList("a", "b", "c")),
        Arguments.of(2, "bar", Arrays.asList("x", "y", "z"))

Junit5 Error. You must provide at least one argument for this @ParameterizedTest

Tag : java , By : enginecrew
Date : March 29 2020, 07:55 AM
With these it helps I'm trying to develop a parameterized test in JUnit 5, as in the example below. , TL;DR
Make ArgClassProvider static or a top-level class.

Java Exception No Tests Found Matching when Junit5 ParameterizedTest Attempt

Tag : java , By : Ryuken
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further From your stack trace it looks like you are attempting to start a JUnit 5 test with org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader. That's unlikely to work, same problem as reported in this question.
Try running the test using Maven from the command line as explained in Running a Single Test docs:
mvn -Dtest=PostingCommonUtilsTest test

Why ArrayList.toArray method pass an array parameter instead of an array class parameter?

Tag : java , By : Tigre
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further Because the method pre-dates generics.
Back in Java 1.2 when the method was created, it was declared as:
public Object[] toArray(Object[] a)
public <T> T[] toArray(T[] a)

JUnit5 (Vintage) initializationError while using @ParameterizedTest and @RunWith(Parameterized.class)

Tag : development , By : user98986
Date : March 29 2020, 07:55 AM
With these it helps You are mixing JUnit 4 and 5 in the same class.
Remove @RunWith(Parameterized.class), you do not need it. Remove all other code that comes from junit 4 packages, if there is such.
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