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

Fixes #208

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}
+}