Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/2612#discussion_r82594969 --- Diff: flink-batch-connectors/flink-avro/src/test/java/org/apache/flink/api/java/io/AvroOutputFormatTest.java --- @@ -0,0 +1,106 @@ +package org.apache.flink.api.java.io; + +import static org.junit.Assert.assertTrue; +import static org.junit.Assert.fail; + +import java.io.IOException; +import java.net.URISyntaxException; +import java.nio.file.Files; +import java.nio.file.Paths; + +import org.apache.avro.file.CodecFactory; +import org.apache.flink.configuration.Configuration; +import org.apache.flink.core.fs.FileSystem; +import org.apache.flink.core.fs.Path; +import org.junit.Test; + +/** + * Tests for {@link AvroOutputFormat} + */ +public class AvroOutputFormatTest { + + @Test + public void testSetCodecFactory() throws Exception { + // given + final AvroOutputFormat<DummyAvroType> outputFormat = new AvroOutputFormat<>(DummyAvroType.class); + + // when + try { + outputFormat.setCodecFactory(CodecFactory.snappyCodec()); + } catch (Exception ex) { + // then + fail("unexpected exception"); + } + } + + @Test + public void testSetCodecFactoryError() throws Exception { + // given + boolean error = false; + final AvroOutputFormat<DummyAvroType> outputFormat = new AvroOutputFormat<>(DummyAvroType.class); + + // when + try { + outputFormat.setCodecFactory(null); + } catch (Exception ex) { + error = true; + } + + // then + assertTrue(error); + } + + @Test + public void testCompression() throws Exception { + // given + final Path outputPath = path("avro-output-file.avro"); + final AvroOutputFormat<DummyAvroType> outputFormat = new AvroOutputFormat<>(outputPath, DummyAvroType.class); + outputFormat.setWriteMode(FileSystem.WriteMode.OVERWRITE); + + final Path compressedOutputPath = path("avro-output-file-compressed.avro"); + final AvroOutputFormat<DummyAvroType> compressedOutputFormat = new AvroOutputFormat<>(compressedOutputPath, DummyAvroType.class); + compressedOutputFormat.setWriteMode(FileSystem.WriteMode.OVERWRITE); + compressedOutputFormat.setCodecFactory(CodecFactory.snappyCodec()); + + // when + output(outputFormat); + output(compressedOutputFormat); + + // then + assertTrue(fileSize(outputPath) > fileSize(compressedOutputPath)); + } + + private long fileSize(Path path) throws IOException { + return Files.size(Paths.get(path.getPath())); + } + + private void output(final AvroOutputFormat<DummyAvroType> outputFormat) throws IOException { + outputFormat.configure(new Configuration()); + outputFormat.open(1,1); + for (int i = 0; i < 100; i++) { + outputFormat.writeRecord(new DummyAvroType(1)); + } + outputFormat.close(); + } + + private Path path(final String virtualPath) throws URISyntaxException { + return new Path(Paths.get(getClass().getResource("/").toURI()).toString() + "/" + virtualPath); --- End diff -- Please use `File.createTempFile()` to create a file in the default temp space.
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