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1 package test.net.sourceforge.pmd.rules.design; 2 3 import net.sourceforge.pmd.PMD; 4 import net.sourceforge.pmd.rules.design.OnlyOneReturnRule; 5 import test.net.sourceforge.pmd.rules.RuleTst; 6 7 public class OnlyOneReturnRuleTest extends RuleTst { 8 9 private static final String TEST1 = 10 "public class OnlyOneReturn1 {" + PMD.EOL + 11 " public String foo(int x) { " + PMD.EOL + 12 " if (x > 0) {" + PMD.EOL + 13 " return \"hey\";" + PMD.EOL + 14 " }" + PMD.EOL + 15 " return \"hi\";" + PMD.EOL + 16 " }" + PMD.EOL + 17 "}"; 18 19 20 private static final String TEST2 = 21 "public class OnlyOneReturn2 {" + PMD.EOL + 22 " public String foo(int x) { " + PMD.EOL + 23 " return \"hi\";" + PMD.EOL + 24 " }" + PMD.EOL + 25 "}"; 26 27 private static final String TEST3 = 28 "public class OnlyOneReturn3 {" + PMD.EOL + 29 " public void foo(int x) { " + PMD.EOL + 30 " int y =2;" + PMD.EOL + 31 " }" + PMD.EOL + 32 "}"; 33 34 private static final String TEST4 = 35 "public class OnlyOneReturn4 {" + PMD.EOL + 36 " public void foo(int x) { " + PMD.EOL + 37 " if (x>2) {" + PMD.EOL + 38 " return;" + PMD.EOL + 39 " }" + PMD.EOL + 40 " int y =2;" + PMD.EOL + 41 " }" + PMD.EOL + 42 "}"; 43 44 private static final String TEST5 = 45 "public class OnlyOneReturn5 {" + PMD.EOL + 46 " public int foo(int x) {" + PMD.EOL + 47 " try {" + PMD.EOL + 48 " x += 2;" + PMD.EOL + 49 " return x;" + PMD.EOL + 50 " } finally {" + PMD.EOL + 51 " System.err.println(\"WunderBuggy!\");" + PMD.EOL + 52 " }" + PMD.EOL + 53 " }" + PMD.EOL + 54 "}"; 55 56 private static final String TEST6 = 57 "public class OnlyOneReturn6 {" + PMD.EOL + 58 " public int foo() {" + PMD.EOL + 59 " FileFilter f = new FileFilter() {" + PMD.EOL + 60 " public boolean accept(File file) {" + PMD.EOL + 61 " return false;" + PMD.EOL + 62 " }" + PMD.EOL + 63 " };" + PMD.EOL + 64 " return 2;" + PMD.EOL + 65 " }" + PMD.EOL + 66 "}"; 67 68 69 70 public void testTwoReturns() throws Throwable { 71 runTestFromString(TEST1, 1, new OnlyOneReturnRule()); 72 } 73 public void testOneReturn() throws Throwable { 74 runTestFromString(TEST2, 0, new OnlyOneReturnRule()); 75 } 76 public void testNoReturns() throws Throwable { 77 runTestFromString(TEST3, 0, new OnlyOneReturnRule()); 78 } 79 public void testVoidRtn() throws Throwable { 80 runTestFromString(TEST4, 0, new OnlyOneReturnRule()); 81 } 82 public void testFinally() throws Throwable { 83 runTestFromString(TEST5, 0, new OnlyOneReturnRule()); 84 } 85 public void testReturnInsideAnonymousInnerClass() throws Throwable { 86 runTestFromString(TEST6, 0, new OnlyOneReturnRule()); 87 } 88 }

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