[PsychoPath XPath 2.0 Processor] XPath2 fails to execute lookup for queries containing "preceding" or "following" axes #21
Description
Steps to reproduce
This is basically a clone of https://bugs.eclipse.org/bugs/show_bug.cgi?id=578021, but I have also confirmed it happening in the very recent library build.
I tried
- Add the PsychoPath XPath 2.0 Processor org.eclipse.wst.xml.xpath2.processor 2.2.0.v202409140028 downloaded from the below link to your Android project
- Write a test to verify XPath 2.0 lookup using "preceding" or "following" axes. See https://github.com/appium/appium-uiautomator2-server/blob/master/app/src/test/java/io/appium/uiautomator2/utils/XMLHelpersTests.java The test itself is super straightforward:
@Test
public void parsesComplexXpath2() {
String query = "(//android.widget.TextView[@text='some, text']/following::android.widget.ImageButton)[1]";
List<Node> nodes = findNodesUsingXpath2(XML, query, true);
assertEquals(nodes.size(), 1);
}I expected: Matching XML nodes are found
But got: The exception below
Here is some relevant log output
java.lang.ClassCastException: class java.util.ArrayList$ListItr cannot be cast to class org.eclipse.wst.xml.xpath2.processor.internal.types.NodeType (java.util.ArrayList$ListItr is in module java.base of loader 'bootstrap'; org.eclipse.wst.xml.xpath2.processor.internal.types.NodeType is in unnamed module of loader 'app')
java.lang.RuntimeException: java.lang.ClassCastException: class java.util.ArrayList$ListItr cannot be cast to class org.eclipse.wst.xml.xpath2.processor.internal.types.NodeType (java.util.ArrayList$ListItr is in module java.base of loader 'bootstrap'; org.eclipse.wst.xml.xpath2.processor.internal.types.NodeType is in unnamed module of loader 'app')
at io.appium.uiautomator2.utils.XMLHelpersTests.findNodesUsingXpath2(XMLHelpersTests.java:212)
at io.appium.uiautomator2.utils.XMLHelpersTests.parsesComplexXpath2(XMLHelpersTests.java:251)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:112)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:40)
at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:54)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:53)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:92)
at jdk.proxy1/jdk.proxy1.$Proxy4.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:183)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:132)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:103)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:63)
at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:121)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
at worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
Caused by: java.lang.ClassCastException: class java.util.ArrayList$ListItr cannot be cast to class org.eclipse.wst.xml.xpath2.processor.internal.types.NodeType (java.util.ArrayList$ListItr is in module java.base of loader 'bootstrap'; org.eclipse.wst.xml.xpath2.processor.internal.types.NodeType is in unnamed module of loader 'app')
at org.eclipse.wst.xml.xpath2.processor.internal.FollowingAxis.iterate(FollowingAxis.java:60)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:1317)
at org.eclipse.wst.xml.xpath2.processor.internal.ast.ForwardStep.accept(ForwardStep.java:147)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:2077)
at org.eclipse.wst.xml.xpath2.processor.internal.ast.AxisStep.accept(AxisStep.java:47)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.do_step(DefaultEvaluator.java:1113)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:1251)
at org.eclipse.wst.xml.xpath2.processor.internal.ast.XPathExpr.accept(XPathExpr.java:45)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.do_expr(DefaultEvaluator.java:339)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:1550)
at org.eclipse.wst.xml.xpath2.processor.internal.ast.ParExpr.accept(ParExpr.java:41)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:2110)
at org.eclipse.wst.xml.xpath2.processor.internal.ast.FilterExpr.accept(FilterExpr.java:53)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:1275)
at org.eclipse.wst.xml.xpath2.processor.internal.ast.XPathExpr.accept(XPathExpr.java:45)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.do_expr(DefaultEvaluator.java:339)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.visit(DefaultEvaluator.java:368)
at org.eclipse.wst.xml.xpath2.processor.ast.XPath.accept(XPath.java:60)
at org.eclipse.wst.xml.xpath2.processor.DefaultEvaluator.evaluate2(DefaultEvaluator.java:327)
at org.eclipse.wst.xml.xpath2.processor.ast.XPath.evaluate(XPath.java:133)
at io.appium.uiautomator2.utils.XMLHelpersTests.findNodesUsingXpath2(XMLHelpersTests.java:189)
... 40 more
Tested under this environment:
- OS & version: MacOS 26
- Eclipse IDE/Platform version (as shown in Help > About): https://download.eclipse.org/releases/2025-03/202503121000/buildInfo/archive/download.eclipse.org/releases/2025-03/202503121000/index/org.eclipse.wst.xml.xpath2.processor_2.2.0.v202409140028.html