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1 /*** 2 * BSD-style license; for more info see http://pmd.sourceforge.net/license.html 3 */ 4 package test.net.sourceforge.pmd.rules; 5 6 import net.sourceforge.pmd.PMD; 7 import net.sourceforge.pmd.Rule; 8 import net.sourceforge.pmd.rules.XPathRule; 9 import test.net.sourceforge.pmd.testframework.SimpleAggregatorTst; 10 import test.net.sourceforge.pmd.testframework.TestDescriptor; 11 12 public class StringInstantiationRuleTest extends SimpleAggregatorTst { 13 14 private Rule rule; 15 16 public void setUp() { 17 rule = new XPathRule(); 18 rule.addProperty("xpath", "//AllocationExpression[Name/@Image='String'][count(.//Expression) < 2][not(ArrayDimsAndInits)]"); 19 } 20 21 public void testAll() { 22 runTests(new TestDescriptor[] { 23 new TestDescriptor(TEST1, "new 'new String's", 2, rule), 24 new TestDescriptor(TEST2, "new String array", 0, rule), 25 new TestDescriptor(TEST3, "using multiple parameter constructor", 0, rule), 26 new TestDescriptor(TEST4, "using 4 parameter constructor", 0, rule) 27 }); 28 } 29 30 private static final String TEST1 = 31 "public class StringInstantiation1 {" + PMD.EOL + 32 " private String bar = new String(\"bar\");" + PMD.EOL + 33 " private String baz = new String();" + PMD.EOL + 34 "}"; 35 36 private static final String TEST2 = 37 "public class StringInstantiation2 {" + PMD.EOL + 38 " private String[] bar = new String[5];" + PMD.EOL + 39 "}"; 40 41 private static final String TEST3 = 42 "public class StringInstantiation3 {" + PMD.EOL + 43 " public void foo() {" + PMD.EOL + 44 " byte[] bytes = new byte[50];" + PMD.EOL + 45 " String bar = new String(bytes, 0, bytes.length);" + PMD.EOL + 46 " }" + PMD.EOL + 47 "}"; 48 49 private static final String TEST4 = 50 "public class StringInstantiation4 {" + PMD.EOL + 51 " public void foo() {" + PMD.EOL + 52 " byte[] bytes = new byte[50];" + PMD.EOL + 53 " String bar = new String(bytes, 0, bytes.length, \"some-encoding\");" + PMD.EOL + 54 " }" + PMD.EOL + 55 "}"; 56 57 58 }

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