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ModifiedControlVariableCheckTest.java
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ModifiedControlVariableCheckTest.java
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///////////////////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code and other text files for adherence to a set of rules.
// Copyright (C) 2001-2023 the original author or authors.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///////////////////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.checks.coding;
import static com.google.common.truth.Truth.assertWithMessage;
import static com.puppycrawl.tools.checkstyle.checks.coding.ModifiedControlVariableCheck.MSG_KEY;
import java.io.File;
import java.util.Collection;
import java.util.Optional;
import java.util.Set;
import org.junit.jupiter.api.Test;
import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
import com.puppycrawl.tools.checkstyle.DetailAstImpl;
import com.puppycrawl.tools.checkstyle.JavaParser;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
import com.puppycrawl.tools.checkstyle.internal.utils.TestUtil;
import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
public class ModifiedControlVariableCheckTest
extends AbstractModuleTestSupport {
@Override
protected String getPackageLocation() {
return "com/puppycrawl/tools/checkstyle/checks/coding/modifiedcontrolvariable";
}
@Test
public void testModifiedControlVariable() throws Exception {
final String[] expected = {
"17:14: " + getCheckMessage(MSG_KEY, "i"),
"20:15: " + getCheckMessage(MSG_KEY, "i"),
"23:37: " + getCheckMessage(MSG_KEY, "i"),
"24:17: " + getCheckMessage(MSG_KEY, "i"),
"52:15: " + getCheckMessage(MSG_KEY, "s"),
"59:14: " + getCheckMessage(MSG_KEY, "m"),
"70:15: " + getCheckMessage(MSG_KEY, "i"),
"71:15: " + getCheckMessage(MSG_KEY, "k"),
"81:15: " + getCheckMessage(MSG_KEY, "v"),
};
verifyWithInlineConfigParser(
getPath("InputModifiedControlVariableBothForLoops.java"), expected);
}
@Test
public void testEnhancedForLoopVariableTrue() throws Exception {
final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
verifyWithInlineConfigParser(
getPath("InputModifiedControlVariableEnhancedForLoopVariable.java"),
expected);
}
@Test
public void testEnhancedForLoopVariableFalse() throws Exception {
final String[] expected = {
"16:18: " + getCheckMessage(MSG_KEY, "line"),
};
verifyWithInlineConfigParser(
getPath("InputModifiedControlVariableEnhancedForLoopVariable3.java"),
expected);
}
@Test
public void testEnhancedForLoopVariable2() throws Exception {
final String[] expected = {
"21:18: " + getCheckMessage(MSG_KEY, "i"),
};
verifyWithInlineConfigParser(
getPath("InputModifiedControlVariableEnhancedForLoopVariable2.java"),
expected);
}
@Test
public void testTokensNotNull() {
final ModifiedControlVariableCheck check = new ModifiedControlVariableCheck();
assertWithMessage("Acceptable tokens should not be null")
.that(check.getAcceptableTokens())
.isNotNull();
assertWithMessage("Default tokens should not be null")
.that(check.getDefaultTokens())
.isNotNull();
assertWithMessage("Required tokens should not be null")
.that(check.getRequiredTokens())
.isNotNull();
}
@Test
public void testImproperToken() {
final ModifiedControlVariableCheck check = new ModifiedControlVariableCheck();
final DetailAstImpl classDefAst = new DetailAstImpl();
classDefAst.setType(TokenTypes.CLASS_DEF);
try {
check.visitToken(classDefAst);
assertWithMessage("IllegalStateException is expected").fail();
}
catch (IllegalStateException ex) {
// it is OK
}
try {
check.leaveToken(classDefAst);
assertWithMessage("IllegalStateException is expected").fail();
}
catch (IllegalStateException ex) {
// it is OK
}
}
@Test
public void testVariousAssignments() throws Exception {
final String[] expected = {
"14:15: " + getCheckMessage(MSG_KEY, "i"),
"15:15: " + getCheckMessage(MSG_KEY, "k"),
"21:15: " + getCheckMessage(MSG_KEY, "i"),
"22:15: " + getCheckMessage(MSG_KEY, "k"),
"28:15: " + getCheckMessage(MSG_KEY, "i"),
"29:15: " + getCheckMessage(MSG_KEY, "k"),
"35:15: " + getCheckMessage(MSG_KEY, "i"),
"36:15: " + getCheckMessage(MSG_KEY, "k"),
"42:15: " + getCheckMessage(MSG_KEY, "i"),
"43:15: " + getCheckMessage(MSG_KEY, "k"),
"48:15: " + getCheckMessage(MSG_KEY, "i"),
"49:15: " + getCheckMessage(MSG_KEY, "k"),
"55:15: " + getCheckMessage(MSG_KEY, "i"),
"56:15: " + getCheckMessage(MSG_KEY, "k"),
"62:15: " + getCheckMessage(MSG_KEY, "i"),
"63:15: " + getCheckMessage(MSG_KEY, "k"),
"69:15: " + getCheckMessage(MSG_KEY, "i"),
"70:15: " + getCheckMessage(MSG_KEY, "k"),
"76:15: " + getCheckMessage(MSG_KEY, "i"),
"77:15: " + getCheckMessage(MSG_KEY, "k"),
"83:14: " + getCheckMessage(MSG_KEY, "i"),
"84:14: " + getCheckMessage(MSG_KEY, "k"),
};
verifyWithInlineConfigParser(
getPath("InputModifiedControlVariableTestVariousAssignments.java"),
expected);
}
/**
* We cannot reproduce situation when visitToken is called and leaveToken is not.
* So, we have to use reflection to be sure that even in such situation
* state of the field will be cleared.
*
* @throws Exception when code tested throws exception
*/
@Test
@SuppressWarnings("unchecked")
public void testClearState() throws Exception {
final ModifiedControlVariableCheck check = new ModifiedControlVariableCheck();
final Optional<DetailAST> methodDef = TestUtil.findTokenInAstByPredicate(
JavaParser.parseFile(
new File(getPath("InputModifiedControlVariableEnhancedForLoopVariable.java")),
JavaParser.Options.WITHOUT_COMMENTS),
ast -> ast.getType() == TokenTypes.OBJBLOCK);
assertWithMessage("Ast should contain METHOD_DEF")
.that(methodDef.isPresent())
.isTrue();
assertWithMessage("State is not cleared on beginTree")
.that(TestUtil.isStatefulFieldClearedDuringBeginTree(check, methodDef.get(),
"variableStack",
variableStack -> ((Collection<Set<String>>) variableStack).isEmpty()))
.isTrue();
}
}