author | Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
Thu, 30 Oct 2014 21:30:10 +0100 | |
changeset 409 | 40cabcdcd2be |
parent 64 | 7b26c64804c2 |
permissions | -rw-r--r-- |
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package org.apidesign.delegatingwriter; |
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import java.io.BufferedWriter; |
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import java.io.IOException; |
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import java.io.StringWriter; |
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import org.junit.Before; |
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import org.junit.Test; |
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import static org.junit.Assert.*; |
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/** |
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* |
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* @author Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
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*/ |
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public class BufferedWriterThrowingExceptionTest { |
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private StringWriter writer; |
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public BufferedWriterThrowingExceptionTest() { |
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} |
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@Before |
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public void setUp() { |
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writer = new StringWriter(); |
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} |
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@Test |
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public void testBehaviourOfRealBufferInJDK() throws IOException { |
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BufferedWriter bufferedWriter = new BufferedWriter(writer); |
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doAppendHello(bufferedWriter, "Hello!"); |
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bufferedWriter.flush(); |
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assertEquals("Hello!", writer.toString()); |
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} |
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@Test |
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public void testBehaviourOfBufferThatThrowsExceptionWhenAppendIsCalled() throws IOException { |
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BufferedWriter bufferedWriter = new AltBufferedWriter(writer, AltBufferedWriter.Behaviour.THROW_EXCEPTION); |
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doAppendHello(bufferedWriter, "Hello!"); |
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bufferedWriter.flush(); |
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assertEquals("Hello!", writer.toString()); |
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} |
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@Test |
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public void testBehaviourWhenDelegatingConditionallyIsOK() throws IOException { |
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BufferedWriter bufferedWriter = new AltBufferedWriter(writer, AltBufferedWriter.Behaviour.DELEGATE_CONDITIONALLY); |
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doAppendHello(bufferedWriter, "Hello!"); |
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bufferedWriter.flush(); |
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assertEquals("Hello!", writer.toString()); |
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} |
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private void doAppendHello(BufferedWriter bufferedWriter, CharSequence what) throws IOException { |
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// BEGIN: writer.throw.client |
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try { |
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bufferedWriter.append(what); |
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} catch (UnsupportedOperationException ex) { |
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bufferedWriter.write(what.toString()); |
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} |
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// END: writer.throw.client |
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} |
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} |