When I instrument a class with Jacoco, do nested classes also get instrumented
as well?
My approach for instrumentation is based on the CoreTutorial example, finding
classes based on class name.
```
final byte[] instrumented;
final String resource = '/' + className.replace('.', '/') + ".class";
InputStream original = getClass().getResourceAsStream(resource);
if (original == null) {
System.err.println("No resource with name: " + resource + " found!");
continue;
}
try {
// Instrument the class to prepare for coverage collection later.
instrumented = instrumenter.instrument(original, className);
original.close();
} catch (IOException e) {
e.printStackTrace();
continue;
}
```
After instrumenting a class which contains a nested class, I load the class
with the MemoryClassLoader (based on the example) and then I call:
Class<?>[] result = c.getDeclaredClasses();
where c is of type Class<?>, and is the instrumented class.
However, I'm facing an IllegalAccessError of the form:
Throwable thrown while handling command: java.lang.IllegalAccessError:
org/apache/commons/collections4/CollectionUtils$EquatorWrapper
java.lang.IllegalAccessError:
org/apache/commons/collections4/CollectionUtils$EquatorWrapper
at java.lang.Class.getDeclaredClasses0(Native Method)
at java.lang.Class.getDeclaredClasses(Class.java:1867)
at randoop.reflection.ClassUtil.getDeclaredClasses(ClassUtil.java:60)
at
randoop.reflection.ReflectionManager.apply(ReflectionManager.java:156)
at
randoop.reflection.OperationModel.addOperationsFromClasses(OperationModel.java:584)
at
randoop.reflection.OperationModel.createModel(OperationModel.java:163)
at randoop.main.GenTests.handle(GenTests.java:275)
at randoop.main.Main.nonStaticMain(Main.java:65)
at randoop.main.Main.main(Main.java:29)
The stacktrace indicates that the illegal access occurred when the outer class
attempted to get the nested class.
After reading the documentation on IllegalAccessError, it appears that such an
error occurs if a class's definition changes "incompatibly".
I'm wondering if this is somehow related to if a nested class gets instrumented
or not.
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