reswqa commented on code in PR #19946: URL: https://github.com/apache/flink/pull/19946#discussion_r896430817
########## flink-core/src/test/java/org/apache/flink/api/common/io/BinaryInputFormatTest.java: ########## @@ -154,17 +170,60 @@ public void testGetStatisticsMultiplePaths() throws IOException { inputFormat.setBlockSize(blockSize); BaseStatistics stats = inputFormat.getStatistics(null); - Assert.assertEquals( - "The file size statistics is wrong", - blockSize * (numBlocks1 + numBlocks2), - stats.getTotalInputSize()); + + assertThat(stats.getTotalInputSize()) + .as("The file size statistics is wrong") + .isEqualTo(blockSize * (numBlocks1 + numBlocks2)); + } + + @Test + public void testCreateInputSplitsWithEmptySplit() throws IOException { + final int blockInfoSize = new BlockInfo().getInfoSize(); + final int blockSize = blockInfoSize + 8; + final int numBlocks = 3; + final int minNumSplits = 5; + + // create temporary file with 3 blocks + final File tempFile = + createBinaryInputFile( + "test_create_input_splits_with_empty_split", blockSize, numBlocks); + + final Configuration config = new Configuration(); + config.setLong("input.block_size", blockSize + 10); + + final BinaryInputFormat<Record> inputFormat = new MyBinaryInputFormat(); + inputFormat.setFilePath(tempFile.toURI().toString()); + inputFormat.setBlockSize(blockSize); + + inputFormat.configure(config); + + FileInputSplit[] inputSplits = inputFormat.createInputSplits(minNumSplits); + + assertThat(inputSplits.length) + .as("Returns requested numbers of splits.") + .isEqualTo(minNumSplits); + + assertThat(inputSplits[0].getLength()) + .as("1. split has block size length.") Review Comment: IMO, `as` is used to add description when this assert is not pass. The error message will be displayed in the following format: org.opentest4j.AssertionFailedError: [description in as()] So I think the `as` description in these tests should be more accurate, such as "1. split should/must has block size length." -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org