| package org.junit.internal; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.fail; |
| import static org.junit.internal.Checks.notNull; |
| import org.junit.Test; |
| |
| /** Tests for {@link Checks}. */ |
| public class ChecksTest { |
| |
| @Test |
| public void notNullShouldReturnNonNullValues() { |
| Double value = Double.valueOf(3.14); |
| |
| Double result = notNull(value); |
| |
| assertSame(value, result); |
| } |
| |
| @Test |
| public void notNullShouldThrowOnNullValues() { |
| try { |
| notNull(null); |
| fail("NullPointerException expected"); |
| } catch (NullPointerException e) { |
| assertNull("message should be null", e.getMessage()); |
| } |
| } |
| |
| @Test |
| public void notNullWithMessageShouldReturnNonNullValues() { |
| Float value = Float.valueOf(3.14f); |
| |
| Float result = notNull(value, "woops"); |
| |
| assertSame(value, result); |
| } |
| |
| @Test |
| public void notNullWithMessageShouldThrowOnNullValues() { |
| try { |
| notNull(null, "woops"); |
| fail("NullPointerException expected"); |
| } catch (NullPointerException e) { |
| assertEquals("message does not match", "woops", e.getMessage()); |
| } |
| } |
| |
| @Test |
| public void notNullWithNullMessageShouldThrowOnNullValues() { |
| try { |
| notNull(null, null); |
| fail("NullPointerException expected"); |
| } catch (NullPointerException e) { |
| assertNull("message should be null", e.getMessage()); |
| } |
| } |
| } |