LambdaBodyLengthCheck.java

///////////////////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code and other text files for adherence to a set of rules.
// Copyright (C) 2001-2022 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.sizes;

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

/**
 * <p>
 * Checks lambda body length.
 * </p>
 * <p>
 * Rationale: Similar to anonymous inner classes, if lambda body becomes very long
 * it is hard to understand and to see the flow of the method
 * where the lambda is defined. Therefore, long lambda body
 * should usually be extracted to method.
 * </p>
 * <ul>
 * <li>
 * Property {@code max} - Specify the maximum number of lines allowed.
 * Type is {@code int}.
 * Default value is {@code 10}.
 * </li>
 * </ul>
 * <p>
 * To configure the check to accept lambda bodies with up to 10 lines:
 * </p>
 * <pre>
 * &lt;module name="LambdaBodyLength"/&gt;
 * </pre>
 * <p>
 * Example:
 * </p>
 * <pre>
 * class Test {
 *   Runnable r = () -&gt; { // violation, 11 lines
 *       System.out.println(2); // line 2 of lambda
 *       System.out.println(3);
 *       System.out.println(4);
 *       System.out.println(5);
 *       System.out.println(6);
 *       System.out.println(7);
 *       System.out.println(8);
 *       System.out.println(9);
 *       System.out.println(10);
 *   }; // line 11
 *
 *   Runnable r2 = () -&gt; // violation, 11 lines
 *       "someString".concat("1") // line 1 of lambda
 *                   .concat("2")
 *                   .concat("3")
 *                   .concat("4")
 *                   .concat("5")
 *                   .concat("6")
 *                   .concat("7")
 *                   .concat("8")
 *                   .concat("9")
 *                   .concat("10")
 *                   .concat("11"); // line 11
 *
 *   Runnable r3 = () -&gt; { // ok, 10 lines
 *       System.out.println(2); // line 2 of lambda
 *       System.out.println(3);
 *       System.out.println(4);
 *       System.out.println(5);
 *       System.out.println(6);
 *       System.out.println(7);
 *       System.out.println(8);
 *       System.out.println(9);
 *   }; // line 10
 * }
 * </pre>
 * <p>
 * To configure the check to accept lambda bodies with max 5 lines:
 * </p>
 * <pre>
 * &lt;module name="LambdaBodyLength"&gt;
 *   &lt;property name="max" value="5"/&gt;
 * &lt;/module&gt;
 * </pre>
 * <p>
 * Example:
 * </p>
 * <pre>
 * class Test {
 *   Runnable r = () -&gt; { // violation, 6 lines
 *       System.out.println(2); // line 2 of lambda
 *       System.out.println(3);
 *       System.out.println(4);
 *       System.out.println(5);
 *   };
 *
 *   Runnable r2 = () -&gt; // violation, 6 lines
 *       "someString".concat("1")
 *                   .concat("2")
 *                   .concat("3")
 *                   .concat("4")
 *                   .concat("5")
 *                   .concat("6");
 *
 *   Runnable r3 = () -&gt; { // ok, 5 lines
 *       System.out.println(2);
 *       System.out.println(3);
 *       System.out.println(4);
 *   };
 * }
 * </pre>
 * <p>
 * Parent is {@code com.puppycrawl.tools.checkstyle.TreeWalker}
 * </p>
 * <p>
 * Violation Message Keys:
 * </p>
 * <ul>
 * <li>
 * {@code maxLen.lambdaBody}
 * </li>
 * </ul>
 *
 * @since 8.37
 */
@StatelessCheck
public class LambdaBodyLengthCheck extends AbstractCheck {

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

    /** Default maximum number of lines. */
    private static final int DEFAULT_MAX = 10;

    /** Specify the maximum number of lines allowed. */
    private int max = DEFAULT_MAX;

    /**
     * Setter to specify the maximum number of lines allowed.
     *
     * @param length the maximum length of lambda body.
     */
    public void setMax(int length) {
        max = length;
    }

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

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

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

    @Override
    public void visitToken(DetailAST ast) {
        if (ast.getParent().getType() != TokenTypes.SWITCH_RULE) {
            final int length = getLength(ast);
            if (length > max) {
                log(ast, MSG_KEY, length, max);
            }
        }
    }

    /**
     * Get length of lambda body.
     *
     * @param ast lambda body node.
     * @return length of lambda body.
     */
    private static int getLength(DetailAST ast) {
        final DetailAST lambdaBody = ast.getLastChild();
        final int length;
        if (lambdaBody.getType() == TokenTypes.SLIST) {
            length = lambdaBody.getLastChild().getLineNo() - lambdaBody.getLineNo();
        }
        else {
            length = getLastNodeLineNumber(lambdaBody) - getFirstNodeLineNumber(lambdaBody);
        }
        return length + 1;
    }

    /**
     * Get last child node in the tree line number.
     *
     * @param lambdaBody lambda body node.
     * @return last child node in the tree line number.
     */
    private static int getLastNodeLineNumber(DetailAST lambdaBody) {
        DetailAST node = lambdaBody;
        int result;
        do {
            result = node.getLineNo();
            node = node.getLastChild();
        } while (node != null);
        return result;
    }

    /**
     * Get first child node in the tree line number.
     *
     * @param lambdaBody lambda body node.
     * @return first child node in the tree line number.
     */
    private static int getFirstNodeLineNumber(DetailAST lambdaBody) {
        DetailAST node = lambdaBody;
        int result;
        do {
            result = node.getLineNo();
            node = node.getFirstChild();
        } while (node != null);
        return result;
    }

}
















Active mutators

CONDITIONALS_BOUNDARY
CONSTRUCTOR_CALLS
FALSE_RETURNS
INCREMENTS
INVERT_NEGS
MATH
NEGATE_CONDITIONALS
REMOVE_CONDITIONALS_EQUAL_ELSE
REMOVE_CONDITIONALS_EQUAL_IF
REMOVE_CONDITIONALS_ORDER_ELSE
REMOVE_CONDITIONALS_ORDER_IF
RETURN_VALS
TRUE_RETURNS
VOID_METHOD_CALLS

Tests examined

com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testGetAcceptableTokens()] (4 ms)
com.puppycrawl.tools.checkstyle.checks.sizes.AnonInnerLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.AnonInnerLengthCheckTest]/[method:testDefault()] (38 ms)
com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testGetRequiredTokens()] (4 ms)
com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] (21 ms)
com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] (10 ms)
com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefault()] (43 ms)

Report generated by PIT 1.8.0

1		///////////////////////////////////////////////////////////////////////////////////////////////
2		// checkstyle: Checks Java source code and other text files for adherence to a set of rules.
3		// Copyright (C) 2001-2022 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.sizes;
21
22		import com.puppycrawl.tools.checkstyle.StatelessCheck;
23		import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
24		import com.puppycrawl.tools.checkstyle.api.DetailAST;
25		import com.puppycrawl.tools.checkstyle.api.TokenTypes;
26
27		/**
28		* <p>
29		* Checks lambda body length.
30		* </p>
31		* <p>
32		* Rationale: Similar to anonymous inner classes, if lambda body becomes very long
33		* it is hard to understand and to see the flow of the method
34		* where the lambda is defined. Therefore, long lambda body
35		* should usually be extracted to method.
36		* </p>
37		* <ul>
38		* <li>
39		* Property {@code max} - Specify the maximum number of lines allowed.
40		* Type is {@code int}.
41		* Default value is {@code 10}.
42		* </li>
43		* </ul>
44		* <p>
45		* To configure the check to accept lambda bodies with up to 10 lines:
46		* </p>
47		* <pre>
48		* <module name="LambdaBodyLength"/>
49		* </pre>
50		* <p>
51		* Example:
52		* </p>
53		* <pre>
54		* class Test {
55		* Runnable r = () -> { // violation, 11 lines
56		* System.out.println(2); // line 2 of lambda
57		* System.out.println(3);
58		* System.out.println(4);
59		* System.out.println(5);
60		* System.out.println(6);
61		* System.out.println(7);
62		* System.out.println(8);
63		* System.out.println(9);
64		* System.out.println(10);
65		* }; // line 11
66		*
67		* Runnable r2 = () -> // violation, 11 lines
68		* "someString".concat("1") // line 1 of lambda
69		* .concat("2")
70		* .concat("3")
71		* .concat("4")
72		* .concat("5")
73		* .concat("6")
74		* .concat("7")
75		* .concat("8")
76		* .concat("9")
77		* .concat("10")
78		* .concat("11"); // line 11
79		*
80		* Runnable r3 = () -> { // ok, 10 lines
81		* System.out.println(2); // line 2 of lambda
82		* System.out.println(3);
83		* System.out.println(4);
84		* System.out.println(5);
85		* System.out.println(6);
86		* System.out.println(7);
87		* System.out.println(8);
88		* System.out.println(9);
89		* }; // line 10
90		* }
91		* </pre>
92		* <p>
93		* To configure the check to accept lambda bodies with max 5 lines:
94		* </p>
95		* <pre>
96		* <module name="LambdaBodyLength">
97		* <property name="max" value="5"/>
98		* </module>
99		* </pre>
100		* <p>
101		* Example:
102		* </p>
103		* <pre>
104		* class Test {
105		* Runnable r = () -> { // violation, 6 lines
106		* System.out.println(2); // line 2 of lambda
107		* System.out.println(3);
108		* System.out.println(4);
109		* System.out.println(5);
110		* };
111		*
112		* Runnable r2 = () -> // violation, 6 lines
113		* "someString".concat("1")
114		* .concat("2")
115		* .concat("3")
116		* .concat("4")
117		* .concat("5")
118		* .concat("6");
119		*
120		* Runnable r3 = () -> { // ok, 5 lines
121		* System.out.println(2);
122		* System.out.println(3);
123		* System.out.println(4);
124		* };
125		* }
126		* </pre>
127		* <p>
128		* Parent is {@code com.puppycrawl.tools.checkstyle.TreeWalker}
129		* </p>
130		* <p>
131		* Violation Message Keys:
132		* </p>
133		* <ul>
134		* <li>
135		* {@code maxLen.lambdaBody}
136		* </li>
137		* </ul>
138		*
139		* @since 8.37
140		*/
141		@StatelessCheck
142		public class LambdaBodyLengthCheck extends AbstractCheck {
143
144		/**
145		* A key is pointing to the warning message text in "messages.properties"
146		* file.
147		*/
148		public static final String MSG_KEY = "maxLen.lambdaBody";
149
150		/** Default maximum number of lines. */
151		private static final int DEFAULT_MAX = 10;
152
153		/** Specify the maximum number of lines allowed. */
154		private int max = DEFAULT_MAX;
155
156		/**
157		* Setter to specify the maximum number of lines allowed.
158		*
159		* @param length the maximum length of lambda body.
160		*/
161		public void setMax(int length) {
162		max = length;
163		}
164
165		@Override
166		public int[] getDefaultTokens() {
167	1 1. getDefaultTokens : mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::getDefaultTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED	return getRequiredTokens();
168		}
169
170		@Override
171		public int[] getAcceptableTokens() {
172	1 1. getAcceptableTokens : mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::getAcceptableTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED	return getRequiredTokens();
173		}
174
175		@Override
176		public int[] getRequiredTokens() {
177	1 1. getRequiredTokens : mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::getRequiredTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED	return new int[] {TokenTypes.LAMBDA};
178		}
179
180		@Override
181		public void visitToken(DetailAST ast) {
182	3 1. visitToken : negated conditional → KILLED 2. visitToken : removed conditional - replaced equality check with false → KILLED 3. visitToken : removed conditional - replaced equality check with true → KILLED	if (ast.getParent().getType() != TokenTypes.SWITCH_RULE) {
183		final int length = getLength(ast);
184	4 1. visitToken : changed conditional boundary → KILLED 2. visitToken : negated conditional → KILLED 3. visitToken : removed conditional - replaced comparison check with false → KILLED 4. visitToken : removed conditional - replaced comparison check with true → KILLED	if (length > max) {
185	1 1. visitToken : removed call to com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::log → KILLED	log(ast, MSG_KEY, length, max);
186		}
187		}
188		}
189
190		/**
191		* Get length of lambda body.
192		*
193		* @param ast lambda body node.
194		* @return length of lambda body.
195		*/
196		private static int getLength(DetailAST ast) {
197		final DetailAST lambdaBody = ast.getLastChild();
198		final int length;
199	3 1. getLength : negated conditional → KILLED 2. getLength : removed conditional - replaced equality check with false → KILLED 3. getLength : removed conditional - replaced equality check with true → KILLED	if (lambdaBody.getType() == TokenTypes.SLIST) {
200	1 1. getLength : Replaced integer subtraction with addition → KILLED	length = lambdaBody.getLastChild().getLineNo() - lambdaBody.getLineNo();
201		}
202		else {
203	1 1. getLength : Replaced integer subtraction with addition → KILLED	length = getLastNodeLineNumber(lambdaBody) - getFirstNodeLineNumber(lambdaBody);
204		}
205	2 1. getLength : Replaced integer addition with subtraction → KILLED 2. getLength : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED	return length + 1;
206		}
207
208		/**
209		* Get last child node in the tree line number.
210		*
211		* @param lambdaBody lambda body node.
212		* @return last child node in the tree line number.
213		*/
214		private static int getLastNodeLineNumber(DetailAST lambdaBody) {
215		DetailAST node = lambdaBody;
216		int result;
217		do {
218		result = node.getLineNo();
219		node = node.getLastChild();
220	3 1. getLastNodeLineNumber : negated conditional → KILLED 2. getLastNodeLineNumber : removed conditional - replaced equality check with false → KILLED 3. getLastNodeLineNumber : removed conditional - replaced equality check with true → KILLED	} while (node != null);
221	1 1. getLastNodeLineNumber : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED	return result;
222		}
223
224		/**
225		* Get first child node in the tree line number.
226		*
227		* @param lambdaBody lambda body node.
228		* @return first child node in the tree line number.
229		*/
230		private static int getFirstNodeLineNumber(DetailAST lambdaBody) {
231		DetailAST node = lambdaBody;
232		int result;
233		do {
234		result = node.getLineNo();
235		node = node.getFirstChild();
236	3 1. getFirstNodeLineNumber : negated conditional → KILLED 2. getFirstNodeLineNumber : removed conditional - replaced equality check with false → KILLED 3. getFirstNodeLineNumber : removed conditional - replaced equality check with true → KILLED	} while (node != null);
237	1 1. getFirstNodeLineNumber : replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED	return result;
238		}
239
240		}
		Mutations
167		1.1 Location : getDefaultTokens Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::getDefaultTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED
172		1.1 Location : getAcceptableTokens Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testGetAcceptableTokens()] mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::getAcceptableTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED
177		1.1 Location : getRequiredTokens Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testGetAcceptableTokens()] mutated return of Object value for com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::getRequiredTokens to ( if (x != null) null else throw new RuntimeException ) → KILLED
182		1.1 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] negated conditional → KILLED 2.2 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed conditional - replaced equality check with false → KILLED 3.3 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] removed conditional - replaced equality check with true → KILLED
184		1.1 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] changed conditional boundary → KILLED 2.2 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] negated conditional → KILLED 3.3 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed conditional - replaced comparison check with false → KILLED 4.4 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] removed conditional - replaced comparison check with true → KILLED
185		1.1 Location : visitToken Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed call to com/puppycrawl/tools/checkstyle/checks/sizes/LambdaBodyLengthCheck::log → KILLED
199		1.1 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] negated conditional → KILLED 2.2 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed conditional - replaced equality check with false → KILLED 3.3 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed conditional - replaced equality check with true → KILLED
200		1.1 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] Replaced integer subtraction with addition → KILLED
203		1.1 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] Replaced integer subtraction with addition → KILLED
205		1.1 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] Replaced integer addition with subtraction → KILLED 2.2 Location : getLength Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
220		1.1 Location : getLastNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] negated conditional → KILLED 2.2 Location : getLastNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] removed conditional - replaced equality check with false → KILLED 3.3 Location : getLastNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed conditional - replaced equality check with true → KILLED
221		1.1 Location : getLastNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED
236		1.1 Location : getFirstNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] negated conditional → KILLED 2.2 Location : getFirstNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] removed conditional - replaced equality check with false → KILLED 3.3 Location : getFirstNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testMaxLimitIsDifferent()] removed conditional - replaced equality check with true → KILLED
237		1.1 Location : getFirstNodeLineNumber Killed by : com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest.[engine:junit-jupiter]/[class:com.puppycrawl.tools.checkstyle.checks.sizes.LambdaBodyLengthCheckTest]/[method:testDefaultSwitchExpressions()] replaced return of integer sized value with (x == 0 ? 1 : 0) → KILLED

LambdaBodyLengthCheck.java

Mutations

Active mutators

Tests examined