fix(java-junit): parse StackTraceElement with custom classloader

Fixes #208

__tests__/java-stack-trace-element-parser.test.ts

@@ -27,11 +27,37 @@ describe('parseStackTraceLine tests', () => {
     })
 
     it('starts with whitespaces', async () => {
-      const line = " \tat org.apache.pulsar.AddMissingPatchVersionTest.testVersionStrings(AddMissingPatchVersionTest.java:29)"
+      const line =
+        ' \tat org.apache.pulsar.AddMissingPatchVersionTest.testVersionStrings(AddMissingPatchVersionTest.java:29)'
       expect(parseStackTraceElement(line)).toEqual({
-        tracePath: "org.apache.pulsar.AddMissingPatchVersionTest.testVersionStrings",
-        fileName: "AddMissingPatchVersionTest.java",
-        lineStr: "29"
+        tracePath: 'org.apache.pulsar.AddMissingPatchVersionTest.testVersionStrings',
+        fileName: 'AddMissingPatchVersionTest.java',
+        lineStr: '29'
+      })
+    })
+
+    describe('since Java 9', () => {
+      it('with classloader and module', async () => {
+        // Based on Java 9 StackTraceElement.toString() Doc: https://docs.oracle.com/javase/9/docs/api/java/lang/StackTraceElement.html#toString--
+        const line = 'at com.foo.loader/foo@9.0/com.foo.Main.run(Main.java:101)'
+        expect(parseStackTraceElement(line)).toEqual({
+          classLoader: 'com.foo.loader',
+          moduleNameAndVersion: 'foo@9.0',
+          tracePath: 'com.foo.Main.run',
+          fileName: 'Main.java',
+          lineStr: '101'
+        })
+      })
+
+      it('with classloader', async () => {
+        const line = 'at com.foo.loader//com.foo.Main.run(Main.java:101)'
+        expect(parseStackTraceElement(line)).toEqual({
+          classLoader: 'com.foo.loader',
+          moduleNameAndVersion: undefined,
+          tracePath: 'com.foo.Main.run',
+          fileName: 'Main.java',
+          lineStr: '101'
+        })
       })
     })
   })

src/parsers/java-junit/java-stack-trace-element-parser.ts

@@ -1,18 +1,24 @@
 export interface StackTraceElement {
+  classLoader: string | undefined
+  moduleNameAndVersion: string | undefined
   tracePath: string
   fileName: string
   lineStr: string
 }
 
-// simple format:
-// at <FULLY_QUALIFIED_METHOD_NAME>(<FILE_NAME>:<LINE_NUMBER>)
-const re = /^\s*at (.*)\((.*):(\d+)\)$/
+// classloader and module name are optional:
+// at <CLASSLOADER>/<MODULE_NAME_AND_VERSION>/<FULLY_QUALIFIED_METHOD_NAME>(<FILE_NAME>:<LINE_NUMBER>)
+// https://github.com/eclipse-openj9/openj9/issues/11452#issuecomment-754946992
+const re = /^\s*at (\S+\/\S*\/)?(.*)\((.*):(\d+)\)$/
 
 export function parseStackTraceElement(stackTraceLine: string): StackTraceElement | undefined {
   const match = stackTraceLine.match(re)
   if (match !== null) {
-    const [_, tracePath, fileName, lineStr] = match
+    const [_, maybeClassLoaderAndModuleNameAndVersion, tracePath, fileName, lineStr] = match
+    const {classLoader, moduleNameAndVersion} = parseClassLoaderAndModule(maybeClassLoaderAndModuleNameAndVersion)
     return {
+      classLoader,
+      moduleNameAndVersion,
       tracePath,
       fileName,
       lineStr
@@ -20,3 +26,19 @@ export function parseStackTraceElement(stackTraceLine: string): StackTraceElemen
   }
   return undefined
 }
+
+function parseClassLoaderAndModule(maybeClassLoaderAndModuleNameAndVersion?: string): {
+  classLoader?: string
+  moduleNameAndVersion?: string
+} {
+  if (maybeClassLoaderAndModuleNameAndVersion) {
+    const res = maybeClassLoaderAndModuleNameAndVersion.split('/')
+    const classLoader = res[0]
+    let moduleNameAndVersion: string | undefined = res[1]
+    if (moduleNameAndVersion === '') {
+      moduleNameAndVersion = undefined
+    }
+    return {classLoader, moduleNameAndVersion}
+  }
+  return {classLoader: undefined, moduleNameAndVersion: undefined}
+}