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ASTSwitchStatementTest.java
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ASTSwitchStatementTest.java
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/*
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.java.ast;
import org.junit.Assert;
import org.junit.Test;
public class ASTSwitchStatementTest extends BaseParserTest {
@Test
public void exhaustiveEnumSwitchWithDefault() {
ASTSwitchStatement switchStatement = getNodes(ASTSwitchStatement.class,
"import java.nio.file.AccessMode; class Foo { void bar(AccessMode m) {"
+ "switch (m) { case READ: break; default: break; } } }")
.get(0);
Assert.assertFalse(switchStatement.isExhaustiveEnumSwitch()); // this should not throw a NPE...
Assert.assertTrue(switchStatement.hasDefaultCase());
Assert.assertTrue(switchStatement.isFallthroughSwitch());
}
@Test
public void defaultCaseWithArrowBlock() {
ASTSwitchStatement switchStatement = java.parse(
"class Foo { void bar(int x) {"
+ "switch (x) { default -> { } } } }")
.getFirstDescendantOfType(ASTSwitchStatement.class);
Assert.assertFalse(switchStatement.isExhaustiveEnumSwitch());
Assert.assertTrue(switchStatement.iterator().hasNext());
Assert.assertTrue(switchStatement.hasDefaultCase());
Assert.assertFalse(switchStatement.isFallthroughSwitch());
}
@Test
public void emptySwitch() {
ASTSwitchStatement switchStatement = java.parse(
"class Foo { void bar(int x) {"
+ "switch (x) { } } }")
.getFirstDescendantOfType(ASTSwitchStatement.class);
Assert.assertFalse(switchStatement.isExhaustiveEnumSwitch());
Assert.assertFalse(switchStatement.iterator().hasNext());
Assert.assertFalse(switchStatement.hasDefaultCase());
Assert.assertFalse(switchStatement.isFallthroughSwitch());
}
@Test
public void defaultCaseWithArrowExprs() {
ASTSwitchStatement switchStatement =
java.parse(
"import net.sourceforge.pmd.lang.java.rule.bestpractices.switchstmtsshouldhavedefault.SimpleEnum;\n"
+ "\n"
+ " public class Foo {\n"
+ " void bar(SimpleEnum x) {\n"
+ " switch (x) {\n"
+ " case FOO -> System.out.println(\"it is on\");\n"
+ " case BAR -> System.out.println(\"it is off\");\n"
+ " default -> System.out.println(\"it is neither on nor off - should not happen? maybe null?\");\n"
+ " }\n"
+ " }\n"
+ " }")
.getFirstDescendantOfType(ASTSwitchStatement.class);
Assert.assertFalse(switchStatement.isExhaustiveEnumSwitch());
Assert.assertTrue(switchStatement.iterator().hasNext());
Assert.assertFalse(switchStatement.isFallthroughSwitch());
Assert.assertTrue(switchStatement.hasDefaultCase());
}
}