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/*
* Copyright (c) 2020, 2023, 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 8231461
* @summary static/instance overload leads to 'unexpected static method found in unbound lookup' when resolving method reference
* @library /lib/combo /tools/lib /tools/javac/lib
* @modules
* jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.util
* @run junit BoundUnboundSearchTest
*/
import java.util.function.*;
import javax.tools.Diagnostic;
import com.sun.tools.javac.api.ClientCodeWrapper.DiagnosticSourceUnwrapper;
import com.sun.tools.javac.util.Assert;
import com.sun.tools.javac.util.JCDiagnostic;
import org.junit.jupiter.api.Test;
import tools.javac.combo.CompilationTestCase;
class BoundUnboundSearchTest extends CompilationTestCase {
static final String TEMPLATE =
"""
import java.util.function.*;
class Test {
#CANDIDATES
void m() {
Function<String, String> f = Test::foo;
}
}
""";
BoundUnboundSearchTest() {
setDefaultFilename("Test.java");
setCompileOptions(new String[]{"--debug=dumpMethodReferenceSearchResults"});
}
private Consumer<Diagnostic<?>> getDiagConsumer(final int boundCandidate, final int unboundCandidate) {
return diagWrapper -> {
JCDiagnostic diagnostic = ((DiagnosticSourceUnwrapper)diagWrapper).d;
Object[] args = diagnostic.getArgs();
if (args[0].toString().equals("bound")) {
Assert.check(args[2].equals(boundCandidate));
} else if (args[0].toString().equals("unbound")) {
Assert.check(args[2].equals(unboundCandidate));
}
};
}
@Test
void test() {
assertOK(
getDiagConsumer(0, -1),
TEMPLATE.replaceFirst("#CANDIDATES",
"""
public String foo(Object o) { return "foo"; } // candidate 0
public static String foo(String o) { return "bar"; } // candidate 1
"""
)
);
assertOK(
getDiagConsumer(0, -1),
TEMPLATE.replaceFirst("#CANDIDATES",
"""
public static String foo(Object o) { return "foo"; } // candidate 0
public static String foo(String o) { return "bar"; } // candidate 0
"""
)
);
assertFail("compiler.err.prob.found.req",
getDiagConsumer(0, -1),
TEMPLATE.replaceFirst("#CANDIDATES",
"""
public static String foo(Object o) { return "foo"; } // candidate 0
public String foo(String o) { return "bar"; } // candidate 1
"""
)
);
assertFail("compiler.err.prob.found.req",
getDiagConsumer(0, -1),
TEMPLATE.replaceFirst("#CANDIDATES",
"""
public String foo(Object o) { return "foo"; } // candidate 0
public String foo(String o) { return "bar"; } // candidate 1
"""
)
);
assertFail("compiler.err.invalid.mref",
getDiagConsumer(-1, -1),
"""
import java.util.function.*;
public class Test {
public String foo(Object o) { return "foo"; }
public static String foo(String o) { return "bar"; }
public void test() {
// method bar doesn't exist
Function<String, String> f = Test::bar;
}
}
"""
);
assertOK(
getDiagConsumer(0, -1),
"""
import java.util.function.*;
interface Intf {
Object apply(String... args);
}
public class Test {
public static Object foo(Object o) { return "bar"; }
public final Object foo(Object... o) { return "foo"; }
public void test() {
Intf f = this::foo;
}
}
"""
);
}
}
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