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1   ///////////////////////////////////////////////////////////////////////////////////////////////
2   // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
3   // Copyright (C) 2001-2026 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 static com.google.common.truth.Truth.assertWithMessage;
23  import static com.puppycrawl.tools.checkstyle.checks.coding.ExpressionOverBlockLambdaCheck.MSG_KEY;
24  
25  import org.junit.jupiter.api.Test;
26  
27  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
28  import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
29  
30  public class ExpressionOverBlockLambdaCheckTest
31      extends AbstractModuleTestSupport {
32  
33      @Override
34      public String getPackageLocation() {
35          return "com/puppycrawl/tools/checkstyle/checks/coding/expressionoverblocklambda";
36      }
37  
38      @Test
39      public void testSingleLineBlockLambdas() throws Exception {
40          final String[] expected = {
41              "22:25: " + getCheckMessage(MSG_KEY),
42              "30:42: " + getCheckMessage(MSG_KEY),
43              "39:20: " + getCheckMessage(MSG_KEY),
44              "47:33: " + getCheckMessage(MSG_KEY),
45              "56:23: " + getCheckMessage(MSG_KEY),
46              "58:24: " + getCheckMessage(MSG_KEY),
47          };
48          verifyWithInlineConfigParser(
49                  getPath("InputExpressionOverBlockLambdaInvalid.java"), expected);
50      }
51  
52      @Test
53      public void testValidLambdas() throws Exception {
54          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
55          verifyWithInlineConfigParser(
56                  getPath("InputExpressionOverBlockLambdaValid.java"), expected);
57      }
58  
59      @Test
60      public void testValidLambdas2() throws Exception {
61          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
62          verifyWithInlineConfigParser(
63                  getPath("InputExpressionOverBlockLambdaValid2.java"),
64                  expected);
65      }
66  
67      @Test
68      public void testTokensNotNull() {
69          final ExpressionOverBlockLambdaCheck check =
70                  new ExpressionOverBlockLambdaCheck();
71          assertWithMessage("Acceptable tokens should not be null")
72                  .that(check.getAcceptableTokens())
73                  .isNotNull();
74          assertWithMessage("Default tokens should not be null")
75                  .that(check.getDefaultTokens())
76                  .isNotNull();
77          assertWithMessage("Required tokens should not be null")
78                  .that(check.getRequiredTokens())
79                  .isNotNull();
80      }
81  
82  }