jdk/test/langtools/tools/javac/preview/PreviewTest.java
Archie Cobbs 3e60ab51fe 8348611: Eliminate DeferredLintHandler and emit warnings after attribution
8224228: No way to locally suppress lint warnings in parser/tokenizer or preview features
8353758: Missing calls to Log.useSource() in JavacTrees

Reviewed-by: mcimadamore, vromero, jlahoda
2025-08-20 15:04:48 +00:00

987 lines
44 KiB
Java

/*
* Copyright (c) 2022, 2025, 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 8282823 8343540
* @library /tools/lib
* @modules
* jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* @build toolbox.ToolBox toolbox.JavacTask
* @run main PreviewTest
*/
import java.lang.classfile.ClassModel;
import java.lang.classfile.ClassFile;
import java.io.InputStream;
import java.nio.file.Files;
import toolbox.JavacTask;
import toolbox.Task;
import toolbox.TestRunner;
import toolbox.ToolBox;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
public class PreviewTest extends TestRunner {
protected ToolBox tb;
PreviewTest() {
super(System.err);
tb = new ToolBox();
}
public static void main(String... args) throws Exception {
PreviewTest t = new PreviewTest();
t.runTests();
}
protected void runTests() throws Exception {
runTests(m -> new Object[] { Paths.get(m.getName()) });
}
@Test
public void previewAPI(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
public class OuterClass {
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public void test() {}
}
""",
"""
package preview.api;
public interface OuterIntf {
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public void test();
}
""",
"""
package preview.api;
public interface OuterIntfDef {
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public default void test() {};
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("-XDrawDiagnostics",
"--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.OuterClass;
public class UseClass1 extends OuterClass {
}
""",
"""
package test;
public class UseSubClass11 extends UseClass1 {
}
""",
"""
package test;
public class UseSubClass12P extends UseClass1 {
public void test() {}
}
""",
"""
package test;
import preview.api.OuterClass;
public class UseClass2P extends OuterClass {
public void test() {}
}
""",
"""
package test;
public class UseSubClass21 extends UseClass2P {
}
""",
"""
package test;
public class UseSubClass22 extends UseClass2P {
public void test() {}
}
""",
"""
package test;
import preview.api.OuterIntf;
public class UseIntf2P implements OuterIntf {
public void test() {}
}
""",
"""
package test;
public class UseSubIntf21 extends UseIntf2P {
}
""",
"""
package test;
public class UseSubIntf22 extends UseIntf2P {
public void test() {}
}
""",
"""
package test;
import preview.api.OuterIntfDef;
public class UseIntfDef1 implements OuterIntfDef {
}
""",
"""
package test;
public class UseSubIntfDef11 extends UseIntfDef1 {
}
""",
"""
package test;
public class UseSubIntfDef12P extends UseIntfDef1 {
public void test() {}
}
""",
"""
package test;
import preview.api.OuterIntfDef;
public class UseIntfDef2P implements OuterIntfDef {
public void test() {}
}
""",
"""
package test;
public class UseSubIntfDef21 extends UseIntfDef2P {
}
""",
"""
package test;
public class UseSubIntfDef22 extends UseIntfDef2P {
public void test() {}
}
""",
"""
package test;
import preview.api.OuterIntf;
public interface IUseIntf1 extends OuterIntf {
}
""",
"""
package test;
import preview.api.OuterIntf;
public interface IUseIntf2P extends OuterIntf {
public default void test() {}
}
""",
"""
package test;
import preview.api.OuterIntfDef;
public interface IUseIntfDef1 extends OuterIntfDef {
}
""",
"""
package test;
import preview.api.OuterIntfDef;
public interface IUseIntfDef2P extends OuterIntfDef {
public default void test() {}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.FAIL)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("IUseIntf2P.java:4:25: compiler.err.is.preview: test()",
"IUseIntfDef2P.java:4:25: compiler.err.is.preview: test()",
"UseClass2P.java:4:17: compiler.err.is.preview: test()",
"UseIntf2P.java:4:17: compiler.err.is.preview: test()",
"UseIntfDef2P.java:4:17: compiler.err.is.preview: test()",
"UseSubClass12P.java:3:17: compiler.err.is.preview: test()",
"UseSubIntfDef12P.java:3:17: compiler.err.is.preview: test()",
"7 errors");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
Path[] sources = tb.findJavaFiles(testSrc);
log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"--enable-preview",
"-Xlint:preview",
"-source", String.valueOf(Runtime.version().feature()),
"-XDrawDiagnostics")
.files(sources)
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
expected =
List.of("IUseIntf2P.java:4:25: compiler.warn.is.preview: test()",
"IUseIntfDef2P.java:4:25: compiler.warn.is.preview: test()",
"UseClass2P.java:4:17: compiler.warn.is.preview: test()",
"UseIntf2P.java:4:17: compiler.warn.is.preview: test()",
"UseIntfDef2P.java:4:17: compiler.warn.is.preview: test()",
"UseSubClass12P.java:3:17: compiler.warn.is.preview: test()",
"UseSubIntfDef12P.java:3:17: compiler.warn.is.preview: test()",
"7 warnings");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
int classfileCount = verifyPreviewClassfiles(testClasses);
if (sources.length != classfileCount) {
throw new IllegalStateException("Unexpected number of classfiles: " + classfileCount + ", number of source files: " + sources.length);
}
for (Path source : sources) {
log = new JavacTask(tb, Task.Mode.CMDLINE)
.classpath(testClasses)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"--enable-preview",
"-Xlint:preview",
"-source", String.valueOf(Runtime.version().feature()),
"-XDrawDiagnostics")
.files(source)
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
boolean preview = source.getFileName().toString().contains("P.");
boolean hasWarning = false;
for (String line : log) {
hasWarning |= line.contains(source.getFileName().toString()) &&
line.contains("compiler.warn.is.preview: test()");
}
if (preview != hasWarning)
throw new Exception("expected " + (preview ? "preview" : "not preview") +
"but got " + (hasWarning ? "warning" : "no warning") +
"in: " + log);
classfileCount = verifyPreviewClassfiles(testClasses);
if (sources.length != classfileCount) {
throw new IllegalStateException("Unexpected number of classfiles: " + classfileCount + ", number of source files: " + sources.length);
}
}
}
@Test
public void previewAPIAbstractReAbstract(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
public class Concrete {
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public void test() {}
}
""",
"""
package preview.api;
public abstract class Abstract {
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public abstract void test();
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("-XDrawDiagnostics", "-doe",
"--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.Concrete;
public abstract class ReabstractP extends Concrete {
public abstract void test();
}
""",
"""
package test;
public abstract class ReabstractSubclass1 extends ReabstractP {
public abstract void test();
}
""",
"""
package test;
public class ReabstractSubclass2 extends ReabstractP {
public void test() {}
}
""",
"""
package test;
import preview.api.Abstract;
public abstract class AbstractP extends Abstract {
public abstract void test();
}
""",
"""
package test;
public abstract class AbstractSubclass1 extends AbstractP {
public abstract void test();
}
""",
"""
package test;
public class AbstractSubclass2 extends AbstractP {
public void test() {}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.FAIL)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("AbstractP.java:4:26: compiler.err.is.preview: test()",
"ReabstractP.java:4:26: compiler.err.is.preview: test()",
"2 errors");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
Path[] sources = tb.findJavaFiles(testSrc);
log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"--enable-preview",
"-Xlint:preview",
"-source", String.valueOf(Runtime.version().feature()),
"-XDrawDiagnostics")
.files(sources)
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
expected =
List.of("AbstractP.java:4:26: compiler.warn.is.preview: test()",
"ReabstractP.java:4:26: compiler.warn.is.preview: test()",
"2 warnings");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
int classfileCount = verifyPreviewClassfiles(testClasses);
if (sources.length != classfileCount) {
throw new IllegalStateException("Unexpected number of classfiles: " + classfileCount + ", number of source files: " + sources.length);
}
for (Path source : sources) {
log = new JavacTask(tb, Task.Mode.CMDLINE)
.classpath(testClasses)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"--enable-preview",
"-Xlint:preview",
"-source", String.valueOf(Runtime.version().feature()),
"-XDrawDiagnostics")
.files(source)
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
boolean preview = source.getFileName().toString().contains("P.");
boolean hasWarning = false;
for (String line : log) {
hasWarning |= line.contains(source.getFileName().toString()) &&
line.contains("compiler.warn.is.preview: test()");
}
if (preview != hasWarning)
throw new Exception("expected " + (preview ? "preview" : "not preview") +
"but got " + (hasWarning ? "warning" : "no warning") +
"in: " + log);
classfileCount = verifyPreviewClassfiles(testClasses);
if (sources.length != classfileCount) {
throw new IllegalStateException("Unexpected number of classfiles: " + classfileCount + ", number of source files: " + sources.length);
}
}
}
@Test //JDK-8343540:
public void nonPreviewImplementsPreview(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public interface Preview {
public static final int FIELD = 0;
public default void test() {}
}
""",
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST,
reflective=true)
public interface ReflectivePreview {
public default void test() {}
}
""",
"""
package preview.api;
public interface NonPreviewIntf extends Preview {
}
""",
"""
package preview.api;
public class NonPreview implements Preview {
}
""",
"""
package preview.api;
public class ReflectiveNonPreview implements ReflectivePreview {
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.NonPreview;
import preview.api.NonPreviewIntf;
import preview.api.Preview;
import preview.api.ReflectiveNonPreview;
public class Test {
public void test(NonPreview np,
Produce<? extends NonPreview> prod) {
np.test();
acceptRunnable(np::test);
accept(NonPreview::test);
prod.produce().test();
acceptRunnable(prod.produce()::test);
int i = np.FIELD;
}
public <T1 extends NonPreview,
T2 extends Test & NonPreviewIntf,
T3 extends T2> void test(T1 t1, T2 t2, T3 t3) {
t1.test();
t2.test();
t3.test();
}
public void test(ReflectiveNonPreview np) {
np.test();
}
public void test(Preview p) {
p.test();
acceptRunnable(p::test);
accept(Preview::test);
}
private static class ExtendsNonPreview extends NonPreview {
public void test() {} //error/warning here:
}
private static class ImplementsPreview implements Preview {
//no error/warning (already was on Preview after implements)
public void test() {}
}
private static class ImplicitReceiver extends NonPreview {
public void g() {
test(); //implicit this - error/warning
int i = FIELD; //implicit this - error/warning
}
}
private void acceptRunnable(Runnable r) {}
private void accept(Accept<NonPreview> accept) {}
interface Accept<T> {
public void accept(T t);
}
interface Produce<T> {
public T produce();
}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.FAIL)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("Test.java:4:19: compiler.err.is.preview: preview.api.Preview",
"Test.java:26:22: compiler.err.is.preview: preview.api.Preview",
"Test.java:34:55: compiler.err.is.preview: preview.api.Preview",
"Test.java:9:11: compiler.err.is.preview: test()",
"Test.java:10:24: compiler.err.is.preview: test()",
"Test.java:11:16: compiler.err.is.preview: test()",
"Test.java:12:23: compiler.err.is.preview: test()",
"Test.java:13:24: compiler.err.is.preview: test()",
"Test.java:14:19: compiler.err.is.preview: FIELD",
"Test.java:19:11: compiler.err.is.preview: test()",
"Test.java:20:11: compiler.err.is.preview: test()",
"Test.java:21:11: compiler.err.is.preview: test()",
"Test.java:29:16: compiler.err.is.preview: preview.api.Preview",
"Test.java:32:21: compiler.err.is.preview: test()",
"Test.java:36:21: compiler.err.is.preview: test()",
"Test.java:40:13: compiler.err.is.preview: test()",
"Test.java:41:21: compiler.err.is.preview: FIELD",
"Test.java:24:11: compiler.warn.is.preview.reflective: test()",
"17 errors",
"1 warning");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
}
@Test //JDK-8343540:
public void nonPreviewImplementsPreview2(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public interface Preview {
public default void test() {}
}
""",
"""
package preview.api;
public interface NonPreviewIntf extends Preview {
public default void test() {}
}
""",
"""
package preview.api;
public class NonPreview implements Preview {
public void test() {}
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.NonPreview;
import preview.api.NonPreviewIntf;
public class Test {
public void test(NonPreview np1,
NonPreviewIntf np2) {
np1.test();
np2.test();
}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
}
@Test //JDK-8343540:
public void nonPreviewImplementsPreview3(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public class Preview {
public int field;
public static void test() {}
}
""",
"""
package preview.api;
public class NonPreview extends Preview {
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.NonPreview;
import preview.api.Preview;
public class Test {
public void test(NonPreview np, Preview p) {
NonPreview.test();
Preview.test();
int i1 = np.field;
int i2 = p.field;
}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.FAIL)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("Test.java:3:19: compiler.err.is.preview: preview.api.Preview",
"Test.java:5:37: compiler.err.is.preview: preview.api.Preview",
"Test.java:6:19: compiler.err.is.preview: test()",
"Test.java:7:9: compiler.err.is.preview: preview.api.Preview",
"Test.java:8:20: compiler.err.is.preview: field",
"5 errors");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
}
@Test //JDK-8343540:
public void nonPreviewImplementsPreview4(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public class Preview {
public int field;
public static void test() {}
}
""",
"""
package preview.api;
public class NonPreview extends Preview {
public int field;
public static void test() {}
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.NonPreview;
import preview.api.Preview;
public class Test {
public void test(NonPreview np, Preview p) {
NonPreview.test();
Preview.test();
int i1 = np.field;
int i2 = p.field;
}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.FAIL)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("Test.java:3:19: compiler.err.is.preview: preview.api.Preview",
"Test.java:5:37: compiler.err.is.preview: preview.api.Preview",
"Test.java:7:9: compiler.err.is.preview: preview.api.Preview",
"3 errors");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
}
@Test //JDK-8224228:
public void testSuppressWarnings(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public class Preview {
public static int test() {
return 0;
}
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.Preview;
public class Test {
public static class Example1 {
public void method() {
Preview.test(); // SHOULD get a warning here
}
}
@SuppressWarnings("preview")
public static class Example2 {
public void method() {
Preview.test(); // SHOULD NOT get a warning here
}
}
public static class Example3 {
@SuppressWarnings("preview")
public void method() {
Preview.test(); // SHOULD NOT get a warning here
}
}
public static class Example4 {
{
Preview.test(); // SHOULD get a warning here
}
}
@SuppressWarnings("preview")
public static class Example5 {
{
Preview.test(); // SHOULD NOT get a warning here
}
}
public static class Example6 {
@SuppressWarnings("preview")
int x = Preview.test(); // SHOULD NOT get a warning here
}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"--enable-preview",
"-Xlint:preview",
"-source", String.valueOf(Runtime.version().feature()),
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("Test.java:7:11: compiler.warn.is.preview: preview.api.Preview",
"Test.java:27:11: compiler.warn.is.preview: preview.api.Preview",
"2 warnings");
if (!log.equals(expected))
throw new Exception("expected output not found: " + log);
}
@Test //JDK-8343540:
public void nonPreviewImplementsPreview5(Path base) throws Exception {
Path apiSrc = base.resolve("api-src");
tb.writeJavaFiles(apiSrc,
"""
package preview.api;
@jdk.internal.javac.PreviewFeature(feature=jdk.internal.javac.PreviewFeature.Feature.TEST)
public interface Preview {
public static final int CONST1 = 0;
public static final int CONST2 = 0;
}
""",
"""
package preview.api;
public interface NonPreviewIntf extends Preview {
public static final int CONST2 = 0;
}
""",
"""
package preview.api;
public class NonPreview implements Preview {
public static final int CONST2 = 0;
}
""");
Path apiClasses = base.resolve("api-classes");
new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(apiClasses)
.options("--patch-module", "java.base=" + apiSrc.toString(),
"-Werror")
.files(tb.findJavaFiles(apiSrc))
.run()
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
Path testSrc = base.resolve("test-src");
tb.writeJavaFiles(testSrc,
"""
package test;
import preview.api.NonPreview;
import preview.api.NonPreviewIntf;
import preview.api.Preview;
public class Test {
public void test() {
int i1 = NonPreview.CONST1;
int i2 = NonPreviewIntf.CONST1;
int i3 = Preview.CONST1;
int i4 = NonPreview.CONST2;
int i5 = NonPreviewIntf.CONST2;
int i6 = Preview.CONST2;
}
}
""");
Path testClasses = base.resolve("test-classes");
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.outdir(testClasses)
.options("--patch-module", "java.base=" + apiClasses.toString(),
"--add-exports", "java.base/preview.api=ALL-UNNAMED",
"-XDrawDiagnostics")
.files(tb.findJavaFiles(testSrc))
.run(Task.Expect.FAIL)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
List<String> expected =
List.of("Test.java:4:19: compiler.err.is.preview: preview.api.Preview",
"Test.java:7:28: compiler.err.is.preview: CONST1",
"Test.java:8:32: compiler.err.is.preview: CONST1",
"Test.java:9:18: compiler.err.is.preview: preview.api.Preview",
"Test.java:12:18: compiler.err.is.preview: preview.api.Preview",
"5 errors");
if (!log.equals(expected))
throw new Exception("expected output not found" + log);
}
private int verifyPreviewClassfiles(Path directory) throws Exception {
Path[] classfiles = tb.findFiles("class", directory);
for (Path classfile : classfiles) {
boolean preview = classfile.getFileName().toString().contains("P.");
checkPreviewClassfile(classfile, preview);
}
return classfiles.length;
}
private void checkPreviewClassfile(Path p, boolean preview) throws Exception {
try (InputStream in = Files.newInputStream(p)) {
ClassModel cf = ClassFile.of().parse(in.readAllBytes());
if (preview && cf.minorVersion() != 65535) {
throw new IllegalStateException("Expected preview class, but got: " + cf.minorVersion() + " for: " + p.toString());
} else if (!preview && cf.minorVersion() != 0) {
throw new IllegalStateException("Expected minor version == 0 but got: " + cf.minorVersion() + " for: " + p.toString());
}
}
}
}