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The TwrTests.java Java example source code
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 6911256 6964740
* @summary Tests of generated TWR code.
*/
import java.util.List;
import java.util.ArrayList;
public class TwrTests {
public static void main(String[] args) {
testCreateFailure1();
testCreateFailure2();
testCreateFailure2Nested();
testCreateFailure3();
testCreateFailure3Nested();
testCreateFailure4();
testCreateFailure4Nested();
testCreateFailure5();
testCreateFailure5Nested();
testCreateSuccess1();
testCreateSuccess2();
testCreateSuccess2Nested();
testCreateSuccess3();
testCreateSuccess3Nested();
testCreateSuccess4();
testCreateSuccess4Nested();
testCreateSuccess5();
testCreateSuccess5Nested();
}
/*
* The following tests simulate a creation failure of every possible
* resource in an TWR block, and check to make sure that the failure
* prevents creation of subsequent resources, and that all created
* resources are properly closed, even if one or more of the close
* attempts fails.
*/
public static void testCreateFailure1() {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList(0);
try (Resource r0 = createResource(0, 0, 0, closedList)) {
throw new AssertionError("Resource creation succeeded");
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
if (e.resourceId() != 0) {
throw new AssertionError("Wrong resource creation "
+ e.resourceId() + " failed");
}
} catch (Resource.CloseFailException e) {
throw new AssertionError("Unexpected CloseFailException: " + e.resourceId());
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, 0);
}
public static void testCreateFailure2() {
for (int createFailureId = 0; createFailureId < 2; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList);
Resource r1 = createResource(1, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed");
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure2Nested() {
for (int createFailureId = 0; createFailureId < 2; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList)) {
try(Resource r1 = createResource(1, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
}
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed");
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure3() {
for (int createFailureId = 0; createFailureId < 3; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList);
Resource r1 = createResource(1, createFailureId, bitMap, closedList);
Resource r2 = createResource(2, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed:" + e);
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure3Nested() {
for (int createFailureId = 0; createFailureId < 3; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList)) {
try (Resource r1 = createResource(1, createFailureId, bitMap, closedList)) {
try (Resource r2 = createResource(2, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
}
}
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed:" + e);
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure4() {
for (int createFailureId = 0; createFailureId < 4; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList);
Resource r1 = createResource(1, createFailureId, bitMap, closedList);
Resource r2 = createResource(2, createFailureId, bitMap, closedList);
Resource r3 = createResource(3, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed:" + e);
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure4Nested() {
for (int createFailureId = 0; createFailureId < 4; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList)) {
try (Resource r1 = createResource(1, createFailureId, bitMap, closedList)) {
try (Resource r2 = createResource(2, createFailureId, bitMap, closedList)) {
try (Resource r3 = createResource(3, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
}
}
}
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed:" + e);
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure5() {
for (int createFailureId = 0; createFailureId < 5; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList);
Resource r1 = createResource(1, createFailureId, bitMap, closedList);
Resource r2 = createResource(2, createFailureId, bitMap, closedList);
Resource r3 = createResource(3, createFailureId, bitMap, closedList);
Resource r4 = createResource(4, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed:" + e);
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
public static void testCreateFailure5Nested() {
for (int createFailureId = 0; createFailureId < 5; createFailureId++) {
for (int bitMap = 0, n = 1 << createFailureId; bitMap < n; bitMap++) {
int creationFailuresDetected = 0;
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, createFailureId, bitMap, closedList)) {
try (Resource r1 = createResource(1, createFailureId, bitMap, closedList)) {
try (Resource r2 = createResource(2, createFailureId, bitMap, closedList)) {
try (Resource r3 = createResource(3, createFailureId, bitMap, closedList)) {
try (Resource r4 = createResource(4, createFailureId, bitMap, closedList)) {
throw new AssertionError("Entire resource creation succeeded");
}
}
}
}
} catch (Resource.CreateFailException e) {
creationFailuresDetected++;
checkCreateFailureId(e.resourceId(), createFailureId);
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
throw new AssertionError("Secondary exception suppression failed:" + e);
}
checkForSingleCreationFailure(creationFailuresDetected);
checkClosedList(closedList, createFailureId);
}
}
}
/**
* Create a resource with the specified ID. The ID must be less than createFailureId.
* A subsequent attempt to close the resource will fail iff the corresponding bit
* is set in closeFailureBitMap. When an attempt is made to close this resource,
* its ID will be added to closedList, regardless of whether the attempt succeeds.
*
* @param id the ID of this resource
* @param createFailureId the ID of the resource whose creation will fail
* @param closeFailureBitMap a bit vector describing which resources should throw an
* exception when close is attempted
* @param closedList a list on which to record resource close attempts
* @throws AssertionError if no attempt should be made to create this resource
*/
private static Resource createResource(int id,
int createFailureId,
int closeFailureBitMap,
List<Integer> closedList) throws Resource.CreateFailException {
if (id > createFailureId)
throw new AssertionError("Resource " + id + " shouldn't be created");
boolean createSucceeds = id != createFailureId;
boolean closeSucceeds = (closeFailureBitMap & (1 << id)) == 0;
return new Resource(id, createSucceeds, closeSucceeds, closedList);
}
/**
* Check that an observed creation failure has the expected resource ID.
*
* @param foundId the ID of the resource whose creation failed
* @param expectedId the ID of the resource whose creation should have failed
*/
private static void checkCreateFailureId(int foundId, int expectedId) {
if (foundId != expectedId)
throw new AssertionError("Wrong resource creation failed. Found ID "
+ foundId + " expected " + expectedId);
}
/**
* Check for proper suppressed exceptions in proper order.
*
* @param suppressedExceptions the suppressed exceptions array returned by
* getSuppressed()
* @bitmap a bitmap indicating which suppressed exceptions are expected.
* Bit i is set iff id should throw a CloseFailException.
*/
private static void checkSuppressedExceptions(Throwable[] suppressedExceptions, int bitMap) {
if (suppressedExceptions.length != Integer.bitCount(bitMap))
throw new AssertionError("Expected " + Integer.bitCount(bitMap)
+ " suppressed exceptions, got " + suppressedExceptions.length);
int prevCloseFailExceptionId = Integer.MAX_VALUE;
for (Throwable t : suppressedExceptions) {
int id = ((Resource.CloseFailException) t).resourceId();
if ((1 << id & bitMap) == 0)
throw new AssertionError("Unexpected suppressed CloseFailException: " + id);
if (id > prevCloseFailExceptionId)
throw new AssertionError("Suppressed CloseFailException" + id
+ " followed " + prevCloseFailExceptionId);
}
}
/**
* Check that exactly one resource creation failed.
*
* @param numCreationFailuresDetected the number of creation failures detected
*/
private static void checkForSingleCreationFailure(int numCreationFailuresDetected) {
if (numCreationFailuresDetected != 1)
throw new AssertionError("Wrong number of creation failures: "
+ numCreationFailuresDetected);
}
/**
* Check that a close was attempted on every resourced that was successfully opened,
* and that the close attempts occurred in the proper order.
*
* @param closedList the resource IDs of the close attempts, in the order they occurred
* @param the ID of the resource whose creation failed. Close attempts should occur
* for all previous resources, in reverse order.
*/
private static void checkClosedList(List<Integer> closedList, int createFailureId) {
List<Integer> expectedList = new ArrayList(createFailureId);
for (int i = createFailureId - 1; i >= 0; i--)
expectedList.add(i);
if (!closedList.equals(expectedList))
throw new AssertionError("Closing sequence " + closedList + " != " + expectedList);
}
/*
* The following tests simulate the creation of several resources, followed
* by success or failure of forward processing. They test that all resources
* are properly closed, even if one or more of the close attempts fails.
*/
public static void testCreateSuccess1() {
for (int bitMap = 0, n = 1 << 1; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 1);
}
}
}
public static void testCreateSuccess2() {
for (int bitMap = 0, n = 1 << 2; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList);
Resource r1 = createResource(1, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 2);
}
}
}
public static void testCreateSuccess2Nested() {
for (int bitMap = 0, n = 1 << 2; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList)) {
try (Resource r1 = createResource(1, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
}
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 2);
}
}
}
public static void testCreateSuccess3() {
for (int bitMap = 0, n = 1 << 3; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList);
Resource r1 = createResource(1, bitMap, closedList);
Resource r2 = createResource(2, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 3);
}
}
}
public static void testCreateSuccess3Nested() {
for (int bitMap = 0, n = 1 << 3; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList)) {
try (Resource r1 = createResource(1, bitMap, closedList)) {
try (Resource r2 = createResource(2, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
}
}
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 3);
}
}
}
public static void testCreateSuccess4() {
for (int bitMap = 0, n = 1 << 4; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList);
Resource r1 = createResource(1, bitMap, closedList);
Resource r2 = createResource(2, bitMap, closedList);
Resource r3 = createResource(3, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 4);
}
}
}
public static void testCreateSuccess4Nested() {
for (int bitMap = 0, n = 1 << 4; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList)) {
try (Resource r1 = createResource(1, bitMap, closedList)) {
try (Resource r2 = createResource(2, bitMap, closedList)) {
try (Resource r3 = createResource(3, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
}
}
}
} catch (Resource.CreateFailException e) {
throw new AssertionError(
"Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 4);
}
}
}
public static void testCreateSuccess5() {
for (int bitMap = 0, n = 1 << 5; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList);
Resource r1 = createResource(1, bitMap, closedList);
Resource r2 = createResource(2, bitMap, closedList);
Resource r3 = createResource(3, bitMap, closedList);
Resource r4 = createResource(4, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
} catch (Resource.CreateFailException e) {
throw new AssertionError("Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 5);
}
}
}
public static void testCreateSuccess5Nested() {
for (int bitMap = 0, n = 1 << 5; bitMap < n; bitMap++) {
for (int failure = 0; failure < 2; failure++) {
List<Integer> closedList = new ArrayList();
try (Resource r0 = createResource(0, bitMap, closedList)) {
try (Resource r1 = createResource(1, bitMap, closedList)) {
try (Resource r2 = createResource(2, bitMap, closedList)) {
try (Resource r3 = createResource(3, bitMap, closedList)) {
try (Resource r4 = createResource(4, bitMap, closedList)) {
if (failure != 0)
throw new MyKindOfException();
}
}
}
}
} catch (Resource.CreateFailException e) {
throw new AssertionError("Resource creation failed: " + e.resourceId());
} catch (MyKindOfException e) {
if (failure == 0)
throw new AssertionError("Unexpected MyKindOfException");
checkSuppressedExceptions(e.getSuppressed(), bitMap);
} catch (Resource.CloseFailException e) {
if (failure == 1)
throw new AssertionError("Secondary exception suppression failed");
int id = e.resourceId();
if (bitMap == 0)
throw new AssertionError("Unexpected CloseFailException: " + id);
int highestCloseFailBit = Integer.highestOneBit(bitMap);
if (1 << id != highestCloseFailBit) {
throw new AssertionError("CloseFailException: got id " + id
+ ", expected lg(" + highestCloseFailBit +")");
}
checkSuppressedExceptions(e.getSuppressed(), bitMap & ~highestCloseFailBit);
}
checkClosedList(closedList, 5);
}
}
}
private static Resource createResource(int id,
int closeFailureBitMap,
List<Integer> closedList) throws Resource.CreateFailException {
boolean closeSucceeds = (closeFailureBitMap & (1 << id)) == 0;
return new Resource(id, true, closeSucceeds, closedList);
}
private static class MyKindOfException extends Exception {
}
}
class Resource implements AutoCloseable {
/** A number identifying this resource */
private final int resourceId;
/** Whether the close call on this resource should succeed or fail */
private final boolean closeSucceeds;
/** When resource is closed, it records its ID in this list */
private final List<Integer> closedList;
Resource(int resourceId, boolean createSucceeds, boolean closeSucceeds,
List<Integer> closedList) throws CreateFailException {
if (!createSucceeds)
throw new CreateFailException(resourceId);
this.resourceId = resourceId;
this.closeSucceeds = closeSucceeds;
this.closedList = closedList;
}
public void close() throws CloseFailException {
closedList.add(resourceId);
if (!closeSucceeds)
throw new CloseFailException(resourceId);
}
public static class ResourceException extends RuntimeException {
private final int resourceId;
public ResourceException(int resourceId) {
super("Resource ID = " + resourceId);
this.resourceId = resourceId;
}
public int resourceId() {
return resourceId;
}
}
public static class CreateFailException extends ResourceException {
public CreateFailException(int resourceId) {
super(resourceId);
}
}
public static class CloseFailException extends ResourceException {
public CloseFailException(int resourceId) {
super(resourceId);
}
}
}
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