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8222430: Add tests for ElementKind predicates

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Reviewed-by: jjg
This commit is contained in:
Joe Darcy 2019-04-15 16:05:46 -07:00
parent 7d29dd2172
commit 4a9f7612be
1 changed files with 74 additions and 0 deletions
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test/langtools/tools/javac/processing/model/element/TestElementKindPredicates.java Normal file
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/*
* Copyright (c) 2019, 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 8222430
* @summary Test various predicates of ElementKind.
*/
import java.util.Set;
import java.util.function.Predicate;
import javax.lang.model.element.ElementKind;
/**
* Test the isClass, isField, and isInterface predicates of ElementKind.
*/
public class TestElementKindPredicates {
public static void main(String... args) {
Set<ElementKind> ALL_KINDS = Set.of(ElementKind.values());
// isClass: Returns true if this is a kind of class: either CLASS or ENUM.
test(ALL_KINDS,
(ElementKind k) -> Set.of(ElementKind.CLASS,
ElementKind.ENUM).contains(k),
(ElementKind k) -> k.isClass(), "isClass");
// isField: Returns true if this is a kind of field: either FIELD or ENUM_CONSTANT.
test(ALL_KINDS,
(ElementKind k) -> Set.of(ElementKind.FIELD,
ElementKind.ENUM_CONSTANT).contains(k),
(ElementKind k) -> k.isField(), "isField");
// isInterface: Returns true if this is a kind of interface: either INTERFACE or ANNOTATION_TYPE.
test(ALL_KINDS,
(ElementKind k) -> Set.of(ElementKind.INTERFACE,
ElementKind.ANNOTATION_TYPE).contains(k),
(ElementKind k) -> k.isInterface(), "isInterface");
}
private static void test(Set<ElementKind> kinds,
Predicate<ElementKind> expectedPred,
Predicate<ElementKind> actualPred,
String errorMessage) {
for(ElementKind kind : kinds) {
boolean expected = expectedPred.test(kind);
boolean actual = actualPred.test(kind);
if (expected != actual) {
throw new RuntimeException("Error testing ElementKind." + errorMessage + "(" + kind +
"):\texpected " + expected + "\tgot " + actual);
}
}
}
}