Getting exception Retrieving groups by name is not supported on this platform

[mih-kopylov]

Setup information

java version: 11
hikaku version: 2.1.0
build tool and version: maven 3.5.4
test framework: junit 4.12

Describe the bug

Running the following test

    @Test
    public void testApi() throws URISyntaxException {
        final HikakuConfig config = new HikakuConfig(Set.of(SpringConverter.IGNORE_ERROR_ENDPOINT));
        final Path path = Paths.get(getClass().getClassLoader().getResource("openapi.yml").toURI());
        new Hikaku(new OpenApiConverter(path), new SpringConverter(applicationContext), config).match();
    }

Expected behavior

API matching test result

Actual result

Exception stacktrace:

de.codecentric.hikaku.converters.EndpointConverterException: Retrieving groups by name is not supported on this platform.

	at de.codecentric.hikaku.converters.openapi.OpenApiConverter.convert(OpenApiConverter.kt:45)
	at de.codecentric.hikaku.converters.AbstractEndpointConverter$conversionResult$2.invoke(AbstractEndpointConverter.kt:11)
	at de.codecentric.hikaku.converters.AbstractEndpointConverter$conversionResult$2.invoke(AbstractEndpointConverter.kt:8)
	at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
	at de.codecentric.hikaku.converters.AbstractEndpointConverter.getConversionResult(AbstractEndpointConverter.kt)
	at de.codecentric.hikaku.Hikaku.match(Hikaku.kt:39)
	at com.example.Api_IT.testApi(Api_IT.java:30)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
	at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.UnsupportedOperationException: Retrieving groups by name is not supported on this platform.
	at kotlin.internal.jdk8.JDK8PlatformImplementations.getMatchResultNamedGroup(JDK8PlatformImplementations.kt:28)
	at kotlin.text.MatcherMatchResult$groups$1.get(Regex.kt:259)
	at kotlin.text.jdk8.RegexExtensionsJDK8Kt.get(RegexExtensions.kt:33)
	at de.codecentric.hikaku.converters.openapi.extractors.QueryParameterExtractor.extractQueryParametersFromComponents(QueryParameterExtractor.kt:32)
	at de.codecentric.hikaku.converters.openapi.extractors.QueryParameterExtractor.invoke(QueryParameterExtractor.kt:13)
	at de.codecentric.hikaku.converters.openapi.OpenApiConverter.parseOpenApi(OpenApiConverter.kt:65)
	at de.codecentric.hikaku.converters.openapi.OpenApiConverter.convert(OpenApiConverter.kt:43)
	... 36 more

[cc-jhr]

Hello @mih-kopylov,

thank you for reporting this issue.

When hikaku tries to exctract the query parameters from your OpenAPI specification it uses a regex with a named group. So calling groups.get("key") throws the exception in the stacktrace you posted.

Retrieving groups by name is not supported on this platform.

It originates from UnsupportedOperationException. The test cases for this part are successful on both jdk8 and jdk11. However the behavior seems to be similar to this issue. As far as I can see this has been resolved for kotlin 1.3.20.

So my assumption is that your classpath might contain a kotlin-stdlib-jre8 having a version < 1.3.20. Could you please verify the versions of the kotlin related dependencies in your actual classpath?

Is the described behavior the same for running the tests via CLI and IDE?

[cc-jhr]

@mih-kopylov have you been able to confirm this? Any new insights?

[cc-jhr]

I am unable to reproduce this and haven't heard from you in a month so I am closing this for now.