OneStatementPerLineCheck.java

////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2018 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 java.util.ArrayDeque;
import java.util.Deque;

import com.puppycrawl.tools.checkstyle.FileStatefulCheck;
import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;

/**
 * Restricts the number of statements per line to one.
 * <p>
 *     Rationale: It's very difficult to read multiple statements on one line.
 * </p>
 * <p>
 *     In the Java programming language, statements are the fundamental unit of
 *     execution. All statements except blocks are terminated by a semicolon.
 *     Blocks are denoted by open and close curly braces.
 * </p>
 * <p>
 *     OneStatementPerLineCheck checks the following types of statements:
 *     variable declaration statements, empty statements, assignment statements,
 *     expression statements, increment statements, object creation statements,
 *     'for loop' statements, 'break' statements, 'continue' statements,
 *     'return' statements, import statements.
 * </p>
 * <p>
 *     The following examples will be flagged as a violation:
 * </p>
 * <pre>
 *     //Each line causes violation:
 *     int var1; int var2;
 *     var1 = 1; var2 = 2;
 *     int var1 = 1; int var2 = 2;
 *     var1++; var2++;
 *     Object obj1 = new Object(); Object obj2 = new Object();
 *     import java.io.EOFException; import java.io.BufferedReader;
 *     ;; //two empty statements on the same line.
 *
 *     //Multi-line statements:
 *     int var1 = 1
 *     ; var2 = 2; //violation here
 *     int o = 1, p = 2,
 *     r = 5; int t; //violation here
 * </pre>
 *
 * @author Alexander Jesse
 * @author Oliver Burn
 * @author Andrei Selkin
 */
@FileStatefulCheck
public final class OneStatementPerLineCheck extends AbstractCheck {

    /**
     * A key is pointing to the warning message text in "messages.properties"
     * file.
     */
    public static final String MSG_KEY = "multiple.statements.line";

    /**
     * Counts number of semicolons in nested lambdas.
     */
    private final Deque<Integer> countOfSemiInLambda = new ArrayDeque<>();

    /**
     * Hold the line-number where the last statement ended.
     */
    private int lastStatementEnd = -1;

    /**
     * Hold the line-number where the last 'for-loop' statement ended.
     */
    private int forStatementEnd = -1;

    /**
     * The for-header usually has 3 statements on one line, but THIS IS OK.
     */
    private boolean inForHeader;

    /**
     * Holds if current token is inside lambda.
     */
    private boolean isInLambda;

    /**
     * Hold the line-number where the last lambda statement ended.
     */
    private int lambdaStatementEnd = -1;

    @Override
    public int[] getDefaultTokens() {
        return getRequiredTokens();
    }

    @Override
    public int[] getAcceptableTokens() {
        return getRequiredTokens();
    }

    @Override
    public int[] getRequiredTokens() {
        return new int[] {
            TokenTypes.SEMI,
            TokenTypes.FOR_INIT,
            TokenTypes.FOR_ITERATOR,
            TokenTypes.LAMBDA,
        };
    }

    @Override
    public void beginTree(DetailAST rootAST) {
        inForHeader = false;
        lastStatementEnd = -1;
        forStatementEnd = -1;
        isInLambda = false;
    }

    @Override
    public void visitToken(DetailAST ast) {
        switch (ast.getType()) {
            case TokenTypes.SEMI:
                checkIfSemicolonIsInDifferentLineThanPrevious(ast);
                break;
            case TokenTypes.FOR_ITERATOR:
                forStatementEnd = ast.getLineNo();
                break;
            case TokenTypes.LAMBDA:
                isInLambda = true;
                countOfSemiInLambda.push(0);
                break;
            default:
                inForHeader = true;
                break;
        }
    }

    @Override
    public void leaveToken(DetailAST ast) {
        switch (ast.getType()) {
            case TokenTypes.SEMI:
                lastStatementEnd = ast.getLineNo();
                forStatementEnd = -1;
                lambdaStatementEnd = -1;
                break;
            case TokenTypes.FOR_ITERATOR:
                inForHeader = false;
                break;
            case TokenTypes.LAMBDA:
                countOfSemiInLambda.pop();
                if (countOfSemiInLambda.isEmpty()) {
                    isInLambda = false;
                }
                lambdaStatementEnd = ast.getLineNo();
                break;
            default:
                break;
        }
    }

    /**
     * Checks if given semicolon is in different line than previous.
     * @param ast semicolon to check
     */
    private void checkIfSemicolonIsInDifferentLineThanPrevious(DetailAST ast) {
        DetailAST currentStatement = ast;
        final boolean hasResourcesPrevSibling =
                currentStatement.getPreviousSibling() != null
                        && currentStatement.getPreviousSibling().getType() == TokenTypes.RESOURCES;
        if (!hasResourcesPrevSibling && isMultilineStatement(currentStatement)) {
            currentStatement = ast.getPreviousSibling();
        }
        if (isInLambda) {
            int countOfSemiInCurrentLambda = countOfSemiInLambda.pop();
            countOfSemiInCurrentLambda++;
            countOfSemiInLambda.push(countOfSemiInCurrentLambda);
            if (!inForHeader && countOfSemiInCurrentLambda > 1
                    && isOnTheSameLine(currentStatement,
                    lastStatementEnd, forStatementEnd,
                    lambdaStatementEnd)) {
                log(ast, MSG_KEY);
            }
        }
        else if (!inForHeader && isOnTheSameLine(currentStatement, lastStatementEnd,
                forStatementEnd, lambdaStatementEnd)) {
            log(ast, MSG_KEY);
        }
    }

    /**
     * Checks whether two statements are on the same line.
     * @param ast token for the current statement.
     * @param lastStatementEnd the line-number where the last statement ended.
     * @param forStatementEnd the line-number where the last 'for-loop'
     *                        statement ended.
     * @param lambdaStatementEnd the line-number where the last lambda
     *                        statement ended.
     * @return true if two statements are on the same line.
     */
    private static boolean isOnTheSameLine(DetailAST ast, int lastStatementEnd,
                                           int forStatementEnd, int lambdaStatementEnd) {
        return lastStatementEnd == ast.getLineNo() && forStatementEnd != ast.getLineNo()
                && lambdaStatementEnd != ast.getLineNo();
    }

    /**
     * Checks whether statement is multiline.
     * @param ast token for the current statement.
     * @return true if one statement is distributed over two or more lines.
     */
    private static boolean isMultilineStatement(DetailAST ast) {
        final boolean multiline;
        if (ast.getPreviousSibling() == null) {
            multiline = false;
        }
        else {
            final DetailAST prevSibling = ast.getPreviousSibling();
            multiline = prevSibling.getLineNo() != ast.getLineNo()
                    && ast.getParent() != null;
        }
        return multiline;
    }

}

























Active mutators

INCREMENTS_MUTATOR
VOID_METHOD_CALL_MUTATOR
RETURN_VALS_MUTATOR
MATH_MUTATOR
NEGATE_CONDITIONALS_MUTATOR
INVERT_NEGS_MUTATOR
CONDITIONALS_BOUNDARY_MUTATOR

Tests examined

com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testWithMultilineStatements(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) (19 ms)
com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testTokensNotNull(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) (0 ms)
com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.oneStatementNonCompilableInputTest(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) (28 ms)
com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) (19 ms)

Report generated by PIT 1.3.1

1		////////////////////////////////////////////////////////////////////////////////
2		// checkstyle: Checks Java source code for adherence to a set of rules.
3		// Copyright (C) 2001-2018 the original author or authors.
4		//
5		// This library is free software; you can redistribute it and/or
6		// modify it under the terms of the GNU Lesser General Public
7		// License as published by the Free Software Foundation; either
8		// version 2.1 of the License, or (at your option) any later version.
9		//
10		// This library is distributed in the hope that it will be useful,
11		// but WITHOUT ANY WARRANTY; without even the implied warranty of
12		// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13		// Lesser General Public License for more details.
14		//
15		// You should have received a copy of the GNU Lesser General Public
16		// License along with this library; if not, write to the Free Software
17		// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18		////////////////////////////////////////////////////////////////////////////////
19
20		package com.puppycrawl.tools.checkstyle.checks.coding;
21
22		import java.util.ArrayDeque;
23		import java.util.Deque;
24
25		import com.puppycrawl.tools.checkstyle.FileStatefulCheck;
26		import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
27		import com.puppycrawl.tools.checkstyle.api.DetailAST;
28		import com.puppycrawl.tools.checkstyle.api.TokenTypes;
29
30		/**
31		* Restricts the number of statements per line to one.
32		* <p>
33		* Rationale: It's very difficult to read multiple statements on one line.
34		* </p>
35		* <p>
36		* In the Java programming language, statements are the fundamental unit of
37		* execution. All statements except blocks are terminated by a semicolon.
38		* Blocks are denoted by open and close curly braces.
39		* </p>
40		* <p>
41		* OneStatementPerLineCheck checks the following types of statements:
42		* variable declaration statements, empty statements, assignment statements,
43		* expression statements, increment statements, object creation statements,
44		* 'for loop' statements, 'break' statements, 'continue' statements,
45		* 'return' statements, import statements.
46		* </p>
47		* <p>
48		* The following examples will be flagged as a violation:
49		* </p>
50		* <pre>
51		* //Each line causes violation:
52		* int var1; int var2;
53		* var1 = 1; var2 = 2;
54		* int var1 = 1; int var2 = 2;
55		* var1++; var2++;
56		* Object obj1 = new Object(); Object obj2 = new Object();
57		* import java.io.EOFException; import java.io.BufferedReader;
58		* ;; //two empty statements on the same line.
59		*
60		* //Multi-line statements:
61		* int var1 = 1
62		* ; var2 = 2; //violation here
63		* int o = 1, p = 2,
64		* r = 5; int t; //violation here
65		* </pre>
66		*
67		* @author Alexander Jesse
68		* @author Oliver Burn
69		* @author Andrei Selkin
70		*/
71		@FileStatefulCheck
72		public final class OneStatementPerLineCheck extends AbstractCheck {
73
74		/**
75		* A key is pointing to the warning message text in "messages.properties"
76		* file.
77		*/
78		public static final String MSG_KEY = "multiple.statements.line";
79
80		/**
81		* Counts number of semicolons in nested lambdas.
82		*/
83		private final Deque<Integer> countOfSemiInLambda = new ArrayDeque<>();
84
85		/**
86		* Hold the line-number where the last statement ended.
87		*/
88		private int lastStatementEnd = -1;
89
90		/**
91		* Hold the line-number where the last 'for-loop' statement ended.
92		*/
93		private int forStatementEnd = -1;
94
95		/**
96		* The for-header usually has 3 statements on one line, but THIS IS OK.
97		*/
98		private boolean inForHeader;
99
100		/**
101		* Holds if current token is inside lambda.
102		*/
103		private boolean isInLambda;
104
105		/**
106		* Hold the line-number where the last lambda statement ended.
107		*/
108		private int lambdaStatementEnd = -1;
109
110		@Override
111		public int[] getDefaultTokens() {
112	1 1. getDefaultTokens : mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::getDefaultTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED	return getRequiredTokens();
113		}
114
115		@Override
116		public int[] getAcceptableTokens() {
117	1 1. getAcceptableTokens : mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::getAcceptableTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED	return getRequiredTokens();
118		}
119
120		@Override
121		public int[] getRequiredTokens() {
122	1 1. getRequiredTokens : mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::getRequiredTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED	return new int[] {
123		TokenTypes.SEMI,
124		TokenTypes.FOR_INIT,
125		TokenTypes.FOR_ITERATOR,
126		TokenTypes.LAMBDA,
127		};
128		}
129
130		@Override
131		public void beginTree(DetailAST rootAST) {
132		inForHeader = false;
133		lastStatementEnd = -1;
134		forStatementEnd = -1;
135		isInLambda = false;
136		}
137
138		@Override
139		public void visitToken(DetailAST ast) {
140		switch (ast.getType()) {
141		case TokenTypes.SEMI:
142	1 1. visitToken : removed call to com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::checkIfSemicolonIsInDifferentLineThanPrevious → KILLED	checkIfSemicolonIsInDifferentLineThanPrevious(ast);
143		break;
144		case TokenTypes.FOR_ITERATOR:
145		forStatementEnd = ast.getLineNo();
146		break;
147		case TokenTypes.LAMBDA:
148		isInLambda = true;
149	1 1. visitToken : removed call to java/util/Deque::push → KILLED	countOfSemiInLambda.push(0);
150		break;
151		default:
152		inForHeader = true;
153		break;
154		}
155		}
156
157		@Override
158		public void leaveToken(DetailAST ast) {
159		switch (ast.getType()) {
160		case TokenTypes.SEMI:
161		lastStatementEnd = ast.getLineNo();
162		forStatementEnd = -1;
163		lambdaStatementEnd = -1;
164		break;
165		case TokenTypes.FOR_ITERATOR:
166		inForHeader = false;
167		break;
168		case TokenTypes.LAMBDA:
169		countOfSemiInLambda.pop();
170	1 1. leaveToken : negated conditional → KILLED	if (countOfSemiInLambda.isEmpty()) {
171		isInLambda = false;
172		}
173		lambdaStatementEnd = ast.getLineNo();
174		break;
175		default:
176		break;
177		}
178		}
179
180		/**
181		* Checks if given semicolon is in different line than previous.
182		* @param ast semicolon to check
183		*/
184		private void checkIfSemicolonIsInDifferentLineThanPrevious(DetailAST ast) {
185		DetailAST currentStatement = ast;
186		final boolean hasResourcesPrevSibling =
187	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	currentStatement.getPreviousSibling() != null
188	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	&& currentStatement.getPreviousSibling().getType() == TokenTypes.RESOURCES;
189	2 1. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED 2. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	if (!hasResourcesPrevSibling && isMultilineStatement(currentStatement)) {
190		currentStatement = ast.getPreviousSibling();
191		}
192	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	if (isInLambda) {
193		int countOfSemiInCurrentLambda = countOfSemiInLambda.pop();
194	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : Changed increment from 1 to -1 → KILLED	countOfSemiInCurrentLambda++;
195	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : removed call to java/util/Deque::push → KILLED	countOfSemiInLambda.push(countOfSemiInCurrentLambda);
196	3 1. checkIfSemicolonIsInDifferentLineThanPrevious : changed conditional boundary → KILLED 2. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED 3. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	if (!inForHeader && countOfSemiInCurrentLambda > 1
197	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	&& isOnTheSameLine(currentStatement,
198		lastStatementEnd, forStatementEnd,
199		lambdaStatementEnd)) {
200	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : removed call to com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::log → KILLED	log(ast, MSG_KEY);
201		}
202		}
203	2 1. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED 2. checkIfSemicolonIsInDifferentLineThanPrevious : negated conditional → KILLED	else if (!inForHeader && isOnTheSameLine(currentStatement, lastStatementEnd,
204		forStatementEnd, lambdaStatementEnd)) {
205	1 1. checkIfSemicolonIsInDifferentLineThanPrevious : removed call to com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::log → KILLED	log(ast, MSG_KEY);
206		}
207		}
208
209		/**
210		* Checks whether two statements are on the same line.
211		* @param ast token for the current statement.
212		* @param lastStatementEnd the line-number where the last statement ended.
213		* @param forStatementEnd the line-number where the last 'for-loop'
214		* statement ended.
215		* @param lambdaStatementEnd the line-number where the last lambda
216		* statement ended.
217		* @return true if two statements are on the same line.
218		*/
219		private static boolean isOnTheSameLine(DetailAST ast, int lastStatementEnd,
220		int forStatementEnd, int lambdaStatementEnd) {
221	3 1. isOnTheSameLine : negated conditional → KILLED 2. isOnTheSameLine : negated conditional → KILLED 3. isOnTheSameLine : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED	return lastStatementEnd == ast.getLineNo() && forStatementEnd != ast.getLineNo()
222	1 1. isOnTheSameLine : negated conditional → KILLED	&& lambdaStatementEnd != ast.getLineNo();
223		}
224
225		/**
226		* Checks whether statement is multiline.
227		* @param ast token for the current statement.
228		* @return true if one statement is distributed over two or more lines.
229		*/
230		private static boolean isMultilineStatement(DetailAST ast) {
231		final boolean multiline;
232	1 1. isMultilineStatement : negated conditional → KILLED	if (ast.getPreviousSibling() == null) {
233		multiline = false;
234		}
235		else {
236		final DetailAST prevSibling = ast.getPreviousSibling();
237	1 1. isMultilineStatement : negated conditional → KILLED	multiline = prevSibling.getLineNo() != ast.getLineNo()
238	1 1. isMultilineStatement : negated conditional → KILLED	&& ast.getParent() != null;
239		}
240	1 1. isMultilineStatement : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED	return multiline;
241		}
242
243		}
		Mutations
112		1.1 Location : getDefaultTokens Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testTokensNotNull(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::getDefaultTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED
117		1.1 Location : getAcceptableTokens Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testTokensNotNull(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::getAcceptableTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED
122		1.1 Location : getRequiredTokens Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testTokensNotNull(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::getRequiredTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED
142		1.1 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) removed call to com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::checkIfSemicolonIsInDifferentLineThanPrevious → KILLED
149		1.1 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) removed call to java/util/Deque::push → KILLED
170		1.1 Location : leaveToken Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
187		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
188		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testWithMultilineStatements(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
189		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testWithMultilineStatements(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED 2.2 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
192		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
194		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.oneStatementNonCompilableInputTest(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) Changed increment from 1 to -1 → KILLED
195		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) removed call to java/util/Deque::push → KILLED
196		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) changed conditional boundary → KILLED 2.2 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.oneStatementNonCompilableInputTest(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED 3.3 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
197		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.oneStatementNonCompilableInputTest(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
200		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.oneStatementNonCompilableInputTest(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) removed call to com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::log → KILLED
203		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED 2.2 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
205		1.1 Location : checkIfSemicolonIsInDifferentLineThanPrevious Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) removed call to com/puppycrawl/tools/checkstyle/checks/coding/OneStatementPerLineCheck::log → KILLED
221		1.1 Location : isOnTheSameLine Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED 2.2 Location : isOnTheSameLine Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED 3.3 Location : isOnTheSameLine Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
222		1.1 Location : isOnTheSameLine Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
232		1.1 Location : isMultilineStatement Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
237		1.1 Location : isMultilineStatement Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testWithMultilineStatements(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
238		1.1 Location : isMultilineStatement Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testWithMultilineStatements(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) negated conditional → KILLED
240		1.1 Location : isMultilineStatement Killed by : com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest.testMultiCaseClass(com.puppycrawl.tools.checkstyle.checks.coding.OneStatementPerLineCheckTest) replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED

OneStatementPerLineCheck.java

Mutations

Active mutators

Tests examined