/*
* Copyright 2017 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.errorprone.bugpatterns.argumentselectiondefects;
import com.google.common.collect.ImmutableSet;
import com.google.errorprone.BugPattern;
import com.google.errorprone.BugPattern.Category;
import com.google.errorprone.BugPattern.SeverityLevel;
import com.google.errorprone.CompilationTestHelper;
import com.google.errorprone.VisitorState;
import com.google.errorprone.bugpatterns.BugChecker;
import com.google.errorprone.bugpatterns.BugChecker.MethodInvocationTreeMatcher;
import com.google.errorprone.matchers.Description;
import com.google.errorprone.util.ASTHelpers;
import com.sun.source.tree.MethodInvocationTree;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for EnclosedByReverseHeuristic
*
* @author andrewrice@google.com (Andrew Rice)
*/
@RunWith(JUnit4.class)
public class EnclosedByReverseHeuristicTest {
/** A {@link BugChecker} which runs the EnclosedByReverseHeuristic and prints the result */
@BugPattern(
name = "EnclosedByReverseHeuristic",
category = Category.ONE_OFF,
severity = SeverityLevel.ERROR,
summary = "Run the EnclosedByReverseHeuristic and print result"
)
public static class EnclosedByReverseHeuristicChecker extends BugChecker
implements MethodInvocationTreeMatcher {
@Override
public Description matchMethodInvocation(MethodInvocationTree tree, VisitorState state) {
boolean result =
!new EnclosedByReverseHeuristic(ImmutableSet.of("reverse"))
.isAcceptableChange(Changes.empty(), tree, ASTHelpers.getSymbol(tree), state);
return buildDescription(tree).setMessage(String.valueOf(result)).build();
}
}
@Test
public void enclosedByReverse_returnsFalse_whenNotInReverse() {
CompilationTestHelper.newInstance(EnclosedByReverseHeuristicChecker.class, getClass())
.addSourceLines(
"Test.java",
"abstract class Test {",
" abstract void target(Object first, Object second);",
" void test(Object first, Object second) {",
" // BUG: Diagnostic contains: false",
" target(second, first);",
" }",
"}")
.doTest();
}
@Test
public void enclosedByReverse_returnsTrue_withinReverseMethod() {
CompilationTestHelper.newInstance(EnclosedByReverseHeuristicChecker.class, getClass())
.addSourceLines(
"Test.java",
"abstract class Test {",
" abstract void target(Object first, Object second);",
" void reverse(Object first, Object second) {",
" // BUG: Diagnostic contains: true",
" target(second, first);",
" }",
"}")
.doTest();
}
@Test
public void enclosedByReverse_returnsTrue_nestedInReverseClass() {
CompilationTestHelper.newInstance(EnclosedByReverseHeuristicChecker.class, getClass())
.addSourceLines(
"Test.java",
"abstract class Reverse {",
" abstract void target(Object first, Object second);",
" void test(Object first, Object second) {",
" // BUG: Diagnostic contains: true",
" target(second, first);",
" }",
"}")
.doTest();
}
}