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package org.python.expose.generate;
import junit.framework.TestCase;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.commons.EmptyVisitor;
import org.python.expose.ExposedMethod;
import org.python.expose.ExposedNew;
public class ExposeMethodFinderTest extends TestCase implements Opcodes, PyTypes {
private ExposedMethodFinder makeFinder(int access, String descriptor, String methodName) {
return new ExposedMethodFinder("simpleexposed",
Type.getType(SimpleExposed.class),
access,
methodName,
descriptor,
null,
new EmptyVisitor()) {
@Override
public void handleResult(InstanceMethodExposer exposer) {
resultantMethExp = exposer;
}
@Override
public void handleNewExposer(Exposer exposer) {
resultantNewExp = exposer;
}
@Override
public void exposeAsDeleteDescriptor(String descName) {
deleteName = descName;
}
@Override
public void exposeAsGetDescriptor(String descName, String doc) {
getName = descName;
}
@Override
public void exposeAsSetDescriptor(String descName) {
setName = descName;
}
@Override
public void handleResult(ClassMethodExposer exposer) {}
};
}
private void checkSet(String typeThatShouldBeSet) {
checkSet(METHOD, typeThatShouldBeSet, resultantMethExp);
checkSet(NEW, typeThatShouldBeSet, resultantNewExp);
checkSet(GET, typeThatShouldBeSet, getName);
checkSet(SET, typeThatShouldBeSet, setName);
checkSet(DELETE, typeThatShouldBeSet, deleteName);
}
private void checkSet(String type, String typeThatShouldBeSet, Object actualValue) {
if(type.equals(typeThatShouldBeSet)) {
assertNotNull(type + " should've been set after these operations", actualValue);
} else {
assertNull(type + " shouldn't have been set by these operations", actualValue);
}
}
public void testExposedNew() {
ExposedMethodFinder visitor = makeFinder(Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
NewExposer.NEW_DESCRIPTOR, "new_");
visitor.visitAnnotation(EXPOSED_NEW.getDescriptor(), true);
visitor.visitEnd();
checkSet(NEW);
}
public void testSimpleExposedMethod() {
makeAndVisit(EXPOSED_METHOD, METHOD, null);
assertEquals(1, resultantMethExp.getNames().length);
assertEquals("simpleMethod", resultantMethExp.getNames()[0]);
}
private void makeAndVisit(Type annotationToVisit,
String typeThatShouldBeSet,
String arrayToVisit,
String... vals) {
ExposedMethodFinder visitor = makeFinder(Opcodes.ACC_PRIVATE, "()V", "simpleMethod");
AnnotationVisitor methVisitor = visitor.visitAnnotation(annotationToVisit.getDescriptor(),
true);
if(arrayToVisit != null) {
AnnotationVisitor arrayVisitor = methVisitor.visitArray(arrayToVisit);
for(String val : vals) {
arrayVisitor.visit("doesn't matter in asm", val);
}
arrayVisitor.visitEnd();
methVisitor.visitEnd();
}
visitor.visitEnd();
checkSet(typeThatShouldBeSet);
}
public void testNamesExposedMethod() {
makeAndVisit(EXPOSED_METHOD, METHOD, "names", "first", "second");
assertEquals(0, resultantMethExp.defaults.length);
assertEquals(2, resultantMethExp.getNames().length);
assertEquals("first", resultantMethExp.getNames()[0]);
assertEquals("second", resultantMethExp.getNames()[1]);
}
public void testDefaultsExposedMethod() {
makeAndVisit(EXPOSED_METHOD, METHOD, "defaults", "Py.None");
assertEquals(1, resultantMethExp.defaults.length);
assertEquals("Py.None", resultantMethExp.defaults[0]);
}
public void testDelDescriptor() {
makeAndVisitDescr("simpleMethod", EXPOSED_DELETE, DELETE);
assertEquals("simpleMethod", deleteName);
}
public void testSetDescriptor() {
makeAndVisitDescr("simpleMethod", EXPOSED_SET, SET);
assertEquals("simpleMethod", setName);
}
public void testGetDescriptor() {
makeAndVisitDescr("getVal", EXPOSED_GET, GET);
assertEquals("getVal", getName);
}
public void testNamedGetDescriptor() {
makeAndVisitDescr("getVal", EXPOSED_GET, GET, "val");
assertEquals("val", getName);
}
public void testNamedSetDescriptor() {
makeAndVisitDescr("setVal", EXPOSED_SET, SET, "val");
assertEquals("val", setName);
}
public void testNamedDelDescriptor() {
makeAndVisitDescr("delVal", EXPOSED_DELETE, DELETE, "val");
assertEquals("val", deleteName);
}
private void makeAndVisitDescr(String methodName, Type annotationToVisit, String typeThatShouldBeSet) {
makeAndVisitDescr(methodName, annotationToVisit, typeThatShouldBeSet, null);
}
private void makeAndVisitDescr(String methodName, Type annotationToVisit, String typeThatShouldBeSet, String name) {
ExposedMethodFinder visitor = makeFinder(Opcodes.ACC_PRIVATE, "()V", methodName);
AnnotationVisitor methVisitor = visitor.visitAnnotation(annotationToVisit.getDescriptor(),
true);
if(name != null) {
methVisitor.visit("name", name);
}
methVisitor.visitEnd();
visitor.visitEnd();
checkSet(typeThatShouldBeSet);
}
private static final String METHOD = "method";
private static final String NEW = "new";
private static final String GET = "get";
private static final String SET = "set";
private static final String DELETE = "del";
private InstanceMethodExposer resultantMethExp;
private Exposer resultantNewExp;
private String deleteName, getName, setName;
}
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