| package net.onrc.onos.core.util; |
| |
| import org.junit.Test; |
| |
| import static net.onrc.onos.core.util.ImmutableClassChecker.assertThatClassIsImmutable; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.containsString; |
| import static org.hamcrest.Matchers.is; |
| |
| /** |
| * Set of unit tests to check the implementation of the immutable class |
| * checker. |
| */ |
| public class ImmutableClassCheckerTest { |
| /** |
| * Test class for non final class check. |
| */ |
| // CHECKSTYLE IGNORE FinalClass FOR NEXT 1 LINES |
| static class NonFinal { |
| private NonFinal() { } |
| } |
| |
| /** |
| * Check that a non final class correctly produces an error. |
| * @throws Exception if any of the reflection lookups fail. |
| */ |
| @Test |
| public void testNonFinalClass() throws Exception { |
| boolean gotException = false; |
| try { |
| assertThatClassIsImmutable(NonFinal.class); |
| } catch (AssertionError assertion) { |
| assertThat(assertion.getMessage(), |
| containsString("is not final")); |
| gotException = true; |
| } |
| assertThat(gotException, is(true)); |
| } |
| |
| /** |
| * Test class for non private member class check. |
| */ |
| static final class FinalProtectedMember { |
| protected final int x = 0; |
| } |
| |
| /** |
| * Check that a final class with a non-private member is properly detected. |
| * |
| * @throws Exception if any of the reflection lookups fail. |
| */ |
| @Test |
| public void testFinalProtectedMember() throws Exception { |
| boolean gotException = false; |
| try { |
| assertThatClassIsImmutable(FinalProtectedMember.class); |
| } catch (AssertionError assertion) { |
| assertThat(assertion.getMessage(), |
| containsString("a field named 'x' that is not private")); |
| gotException = true; |
| } |
| assertThat(gotException, is(true)); |
| } |
| |
| /** |
| * Test class for non private member class check. |
| */ |
| static final class NotFinalPrivateMember { |
| private int x = 0; |
| } |
| |
| /** |
| * Check that a final class with a non-final private |
| * member is properly detected. |
| * |
| * @throws Exception if any of the reflection lookups fail. |
| */ |
| @Test |
| public void testNotFinalPrivateMember() throws Exception { |
| boolean gotException = false; |
| try { |
| assertThatClassIsImmutable(NotFinalPrivateMember.class); |
| } catch (AssertionError assertion) { |
| assertThat(assertion.getMessage(), |
| containsString("a field named 'x' that is not final")); |
| gotException = true; |
| } |
| assertThat(gotException, is(true)); |
| } |
| |
| /** |
| * Test class for non private member class check. |
| */ |
| static final class ClassWithSetter { |
| private final int x = 0; |
| public void setX(int newX) { |
| } |
| } |
| |
| /** |
| * Check that a final class with a final private |
| * member that is modifyable by a setter is properly detected. |
| * |
| * @throws Exception if any of the reflection lookups fail. |
| */ |
| @Test |
| public void testClassWithSetter() throws Exception { |
| boolean gotException = false; |
| try { |
| assertThatClassIsImmutable(ClassWithSetter.class); |
| } catch (AssertionError assertion) { |
| assertThat(assertion.getMessage(), |
| containsString("a class with a setter named 'setX'")); |
| gotException = true; |
| } |
| assertThat(gotException, is(true)); |
| } |
| |
| } |
| |