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/*
* Copyright (c) 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 8348410
* @summary Ensure --enable-preview is required for primitive switch on a boxed expression
* @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 PrimitivePatternsSwitchRequirePreview
*/
import java.nio.file.Path;
import java.util.List;
import java.util.Objects;
import toolbox.JavacTask;
import toolbox.Task.Expect;
import toolbox.Task.OutputKind;
import toolbox.TestRunner;
import toolbox.ToolBox;
public class PrimitivePatternsSwitchRequirePreview extends TestRunner {
ToolBox tb;
public PrimitivePatternsSwitchRequirePreview() {
super(System.err);
tb = new ToolBox();
}
public static void main(String[] args) throws Exception {
PrimitivePatternsSwitchRequirePreview t = new PrimitivePatternsSwitchRequirePreview();
t.runTests();
}
@Test
public void testBoolean() throws Exception {
String code = """
class C {
public static void testBoolean(Boolean value) {
switch (value) {
case true -> System.out.println("true");
default -> System.out.println("false");
}
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev", "-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:4:16: compiler.err.preview.feature.disabled.plural: (compiler.misc.feature.primitive.patterns)",
"1 error"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test
public void testLong() throws Exception {
String code = """
class C {
public static void testLong(Long value) {
switch (value) {
case 0L -> System.out.println("zero");
default -> System.out.println("non-zero");
}
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev", "-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:4:17: compiler.err.preview.feature.disabled.plural: (compiler.misc.feature.primitive.patterns)",
"1 error"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test
public void testFloat() throws Exception {
String code = """
class C {
public static void testFloat(Float value) {
switch (value) {
case 0f -> System.out.println("zero");
default -> System.out.println("non-zero");
}
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev", "-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:4:15: compiler.err.preview.feature.disabled.plural: (compiler.misc.feature.primitive.patterns)",
"1 error"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
@Test
public void testDouble() throws Exception {
String code = """
class C {
public static void testDouble(Long value) {
switch (value) {
case 0L -> System.out.println("zero");
default -> System.out.println("non-zero");
}
}
}
""";
Path curPath = Path.of(".");
List<String> actual = new JavacTask(tb)
.options("-XDrawDiagnostics", "-XDdev", "-XDshould-stop.at=FLOW")
.sources(code)
.outdir(curPath)
.run(Expect.FAIL)
.getOutputLines(OutputKind.DIRECT);
List<String> expected = List.of(
"C.java:4:16: compiler.err.preview.feature.disabled.plural: (compiler.misc.feature.primitive.patterns)",
"1 error"
);
if (!Objects.equals(actual, expected)) {
error("Expected: " + expected + ", but got: " + actual);
}
}
}
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