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test/hotspot/jtreg/runtime/LoaderConstraints/vtableLdrConstraint/Test.java
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*** 33,98 ****
* @run main/othervm Test
*/
public class Test {
! // Break expected error messages into 2 parts since the loader name includes its identity
// hash which is unique and can't be compared against.
! static String expectedErrorMessage1_part1 =
! "loader constraint violation for class test.Task: " +
! "when selecting overriding method test.Task.m()Ltest/Foo; " +
! "the class loader PreemptingClassLoader @";
! static String expectedErrorMessage1_part2 =
! " (instance of PreemptingClassLoader, " +
! "child of 'app' jdk.internal.loader.ClassLoaders$AppClassLoader) " +
! "of the selected method's type test.Task, " +
! "and the class loader 'app' (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " +
! "for its super type test.J " +
! "have different Class objects for the type test.Foo used in the signature";
!
! static String expectedErrorMessage2_part1 =
! "loader constraint violation for class test.Task: " +
! "when selecting overriding method test.Task.m()Ltest/Foo; " +
! "the class loader 'VtableLdrCnstrnt_Test_Loader' @";
! static String expectedErrorMessage2_part2 =
! " (instance of PreemptingClassLoader, " +
! "child of 'app' jdk.internal.loader.ClassLoaders$AppClassLoader) " +
! "of the selected method's type test.Task, " +
! "and the class loader 'app' (instance of jdk.internal.loader.ClassLoaders$AppClassLoader) " +
! "for its super type test.J " +
! "have different Class objects for the type test.Foo used in the signature";
// Test that the error message is correct when a loader constraint error is
// detected during vtable creation.
//
// In this test, during vtable creation for class Task, method "Task.m()LFoo;"
// overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo
// are different. So, a LinkageError exception should be thrown because the
// loader constraint check will fail.
public static void test(String loaderName,
String expectedErrorMessage_part1,
! String expectedErrorMessage_part2) throws Exception {
Class<?> c = test.Foo.class; // Forces standard class loader to load Foo.
String[] classNames = {"test.Task", "test.Foo", "test.I"};
ClassLoader l = new PreemptingClassLoader(loaderName, classNames);
l.loadClass("test.Foo");
try {
l.loadClass("test.Task").newInstance();
throw new RuntimeException("Expected LinkageError exception not thrown");
} catch (LinkageError e) {
String errorMsg = e.getMessage();
if (!errorMsg.contains(expectedErrorMessage_part1) ||
! !errorMsg.contains(expectedErrorMessage_part2)) {
System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" +
"but got: " + errorMsg);
throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg);
}
System.out.println("Passed with message: " + errorMsg);
}
}
public static void main(String args[]) throws Exception {
! test(null, expectedErrorMessage1_part1, expectedErrorMessage1_part2);
! test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1, expectedErrorMessage2_part2);
}
}
-
--- 33,95 ----
* @run main/othervm Test
*/
public class Test {
! // Break expected error messages into 3 parts since the loader name includes its identity
// hash which is unique and can't be compared against.
! static String expectedErrorMessage1_part1 = "loader constraint violation for class test.Task: when " +
! "selecting overriding method test.Task.m()Ltest/Foo; the " +
! "class loader PreemptingClassLoader @";
! static String expectedErrorMessage1_part2 = " of the selected method's type test.Task, and the class " +
! "loader 'app' for its super type test.J have different Class objects " +
! "for the type test.Foo used in the signature (test.Task is in unnamed " +
! "module of loader PreemptingClassLoader @";
! static String expectedErrorMessage1_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')";
!
! static String expectedErrorMessage2_part1 = "loader constraint violation for class test.Task: when " +
! "selecting overriding method test.Task.m()Ltest/Foo; the " +
! "class loader 'VtableLdrCnstrnt_Test_Loader' @";
! static String expectedErrorMessage2_part2 = " of the selected method's type test.Task, and the class " +
! "loader 'app' for its super type test.J have different Class objects " +
! "for the type test.Foo used in the signature (test.Task is in unnamed " +
! "module of loader 'VtableLdrCnstrnt_Test_Loader' @";
! static String expectedErrorMessage2_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')";
// Test that the error message is correct when a loader constraint error is
// detected during vtable creation.
//
// In this test, during vtable creation for class Task, method "Task.m()LFoo;"
// overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo
// are different. So, a LinkageError exception should be thrown because the
// loader constraint check will fail.
public static void test(String loaderName,
String expectedErrorMessage_part1,
! String expectedErrorMessage_part2,
! String expectedErrorMessage_part3) throws Exception {
Class<?> c = test.Foo.class; // Forces standard class loader to load Foo.
String[] classNames = {"test.Task", "test.Foo", "test.I"};
ClassLoader l = new PreemptingClassLoader(loaderName, classNames);
l.loadClass("test.Foo");
try {
l.loadClass("test.Task").newInstance();
throw new RuntimeException("Expected LinkageError exception not thrown");
} catch (LinkageError e) {
String errorMsg = e.getMessage();
if (!errorMsg.contains(expectedErrorMessage_part1) ||
! !errorMsg.contains(expectedErrorMessage_part2) ||
! !errorMsg.contains(expectedErrorMessage_part3)) {
System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" +
"but got: " + errorMsg);
throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg);
}
System.out.println("Passed with message: " + errorMsg);
}
}
public static void main(String args[]) throws Exception {
! test(null, expectedErrorMessage1_part1,
! expectedErrorMessage1_part2, expectedErrorMessage1_part3);
! test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1,
! expectedErrorMessage2_part2, expectedErrorMessage2_part3);
}
}
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