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CallPoint.java
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CallPoint.java
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/*
* Copyright (c) 2006 Rogério Liesenfeld
* This file is subject to the terms of the MIT license (see LICENSE.txt).
*/
package mockit.coverage;
import java.io.*;
import java.lang.annotation.*;
import java.lang.reflect.*;
import java.util.*;
import javax.annotation.*;
import static java.lang.reflect.Modifier.*;
import mockit.internal.util.*;
public final class CallPoint implements Serializable
{
private static final long serialVersionUID = 362727169057343840L;
private static final Map<StackTraceElement, Boolean> steCache = new HashMap<StackTraceElement, Boolean>();
private static final Class<? extends Annotation> testAnnotation;
private static final boolean checkTestAnnotationOnClass;
private static final boolean checkIfTestCaseSubclass;
static
{
boolean checkOnClassAlso = true;
Class<?> annotation;
try {
annotation = Class.forName("org.junit.Test");
checkOnClassAlso = false;
}
catch (ClassNotFoundException ignore) {
annotation = getTestNGAnnotationIfAvailable();
}
//noinspection unchecked
testAnnotation = (Class<? extends Annotation>) annotation;
checkTestAnnotationOnClass = checkOnClassAlso;
checkIfTestCaseSubclass = checkForJUnit3Availability();
}
@Nullable
private static Class<?> getTestNGAnnotationIfAvailable()
{
try {
return Class.forName("org.testng.annotations.Test");
}
catch (ClassNotFoundException ignore) {
// For older versions of TestNG:
try {
return Class.forName("org.testng.Test");
}
catch (ClassNotFoundException ignored) {
return null;
}
}
}
private static boolean checkForJUnit3Availability()
{
try {
Class.forName("junit.framework.TestCase");
return true;
}
catch (ClassNotFoundException ignore) {
return false;
}
}
@Nonnull private final StackTraceElement ste;
private int repetitionCount;
private CallPoint(@Nonnull StackTraceElement ste) { this.ste = ste; }
@Nonnull public StackTraceElement getStackTraceElement() { return ste; }
public int getRepetitionCount() { return repetitionCount; }
public void incrementRepetitionCount() { repetitionCount++; }
public boolean isSameTestMethod(@Nonnull CallPoint other)
{
StackTraceElement thisSTE = ste;
StackTraceElement otherSTE = other.ste;
return
thisSTE == otherSTE ||
thisSTE.getClassName().equals(otherSTE.getClassName()) &&
thisSTE.getMethodName().equals(otherSTE.getMethodName());
}
public boolean isSameLineInTestCode(@Nonnull CallPoint other)
{
return isSameTestMethod(other) && ste.getLineNumber() == other.ste.getLineNumber();
}
@Nullable
static CallPoint create(@Nonnull Throwable newThrowable)
{
StackTrace st = new StackTrace(newThrowable);
int n = st.getDepth();
for (int i = 2; i < n; i++) {
StackTraceElement ste = st.getElement(i);
if (isTestMethod(ste)) {
return new CallPoint(ste);
}
}
return null;
}
private static boolean isTestMethod(@Nonnull StackTraceElement ste)
{
String className = ste.getClassName();
String methodName = ste.getMethodName();
if (className == null || methodName == null) {
return false;
}
if (steCache.containsKey(ste)){
return steCache.get(ste);
}
boolean isTestMethod = false;
if (
ste.getFileName() != null && ste.getLineNumber() >= 0 &&
!className.startsWith("java.") && !className.startsWith("javax.") && !className.startsWith("sun.") &&
!className.startsWith("org.junit.") && !className.startsWith("org.testng.") && !className.startsWith("mockit.")
) {
Class<?> aClass = loadClass(className);
if (aClass != null) {
if (checkTestAnnotationOnClass && aClass.isAnnotationPresent(testAnnotation)) {
isTestMethod = true;
}
else {
Method method = findMethod(aClass, methodName);
if (method != null) {
isTestMethod =
containsATestFrameworkAnnotation(method.getDeclaredAnnotations()) ||
checkIfTestCaseSubclass && isJUnit3xTestMethod(aClass, method);
}
}
}
}
steCache.put(ste, isTestMethod);
return isTestMethod;
}
@Nullable
private static Class<?> loadClass(@Nonnull String className)
{
try {
return Class.forName(className);
}
catch (ClassNotFoundException ignore) { return null; }
catch (LinkageError ignore) { return null; }
}
@Nullable
private static Method findMethod(@Nonnull Class<?> aClass, @Nonnull String name)
{
try {
for (Method method : aClass.getDeclaredMethods()) {
if (method.getReturnType() == void.class && name.equals(method.getName())) {
return method;
}
}
}
catch (NoClassDefFoundError ignore) {}
return null;
}
private static boolean containsATestFrameworkAnnotation(@Nonnull Annotation[] methodAnnotations)
{
for (Annotation annotation : methodAnnotations) {
String annotationName = annotation.annotationType().getName();
if (annotationName.startsWith("org.junit.") || annotationName.startsWith("org.testng.")) {
return true;
}
}
return false;
}
private static boolean isJUnit3xTestMethod(@Nonnull Class<?> aClass, @Nonnull Method method)
{
if (!isPublic(method.getModifiers()) || !method.getName().startsWith("test")) {
return false;
}
Class<?> superClass = aClass.getSuperclass();
while (superClass != Object.class) {
if ("junit.framework.TestCase".equals(superClass.getName())) {
return true;
}
superClass = superClass.getSuperclass();
}
return false;
}
}