ORC-1643: Add test for `scan` command
### What changes were proposed in this pull request?
Add unit test for `scan` command of `orc-tools`.
### Why are the changes needed?
Improve code test coverage and avoid regressions.
### How was this patch tested?
Add UT
### Was this patch authored or co-authored using generative AI tooling?
No
Closes #1833 from cxzl25/ORC-1643.
Authored-by: sychen <sychen@ctrip.com>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>
diff --git a/java/tools/src/test/org/apache/orc/tools/TesScanData.java b/java/tools/src/test/org/apache/orc/tools/TesScanData.java
new file mode 100644
index 0000000..df73abc
--- /dev/null
+++ b/java/tools/src/test/org/apache/orc/tools/TesScanData.java
@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.orc.tools;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector;
+import org.apache.hadoop.hive.ql.exec.vector.LongColumnVector;
+import org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch;
+import org.apache.orc.OrcFile;
+import org.apache.orc.TypeDescription;
+import org.apache.orc.Writer;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.nio.charset.StandardCharsets;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class TesScanData {
+ private Path workDir = new Path(System.getProperty("test.tmp.dir"));
+ private Configuration conf;
+ private FileSystem fs;
+ private Path testFilePath;
+
+ @BeforeEach
+ public void openFileSystem() throws Exception {
+ conf = new Configuration();
+ fs = FileSystem.getLocal(conf);
+ fs.setWorkingDirectory(workDir);
+ testFilePath = new Path("TesScanData.testScan.orc");
+ fs.delete(testFilePath, false);
+ }
+
+ @Test
+ public void testScan() throws Exception {
+ TypeDescription schema = TypeDescription.fromString("struct<x:int,y:string>");
+ Writer writer = OrcFile.createWriter(testFilePath,
+ OrcFile.writerOptions(conf)
+ .setSchema(schema));
+ VectorizedRowBatch batch = schema.createRowBatch();
+ LongColumnVector x = (LongColumnVector) batch.cols[0];
+ BytesColumnVector y = (BytesColumnVector) batch.cols[1];
+ for (int r = 0; r < 10000; ++r) {
+ int row = batch.size++;
+ x.vector[row] = r;
+ byte[] buffer = ("byte-" + r).getBytes();
+ y.setRef(row, buffer, 0, buffer.length);
+ if (batch.size == batch.getMaxSize()) {
+ writer.addRowBatch(batch);
+ batch.reset();
+ }
+ }
+ if (batch.size != 0) {
+ writer.addRowBatch(batch);
+ }
+ writer.close();
+
+ PrintStream origOut = System.out;
+ ByteArrayOutputStream myOut = new ByteArrayOutputStream();
+ // replace stdout and run command
+ System.setOut(new PrintStream(myOut, false, StandardCharsets.UTF_8));
+ ScanData.main(conf, new String[]{"--schema", testFilePath.toString()});
+ System.out.flush();
+ System.setOut(origOut);
+ String output = myOut.toString(StandardCharsets.UTF_8);
+ assertTrue(output.contains("{\"category\": \"struct\", \"id\": 0, \"max\": 2, \"fields\": [\n" +
+ "{ \"x\": {\"category\": \"int\", \"id\": 1, \"max\": 1}},\n" +
+ "{ \"y\": {\"category\": \"string\", \"id\": 2, \"max\": 2}}]}"));
+ assertTrue(output.contains("File: TesScanData.testScan.orc, bad batches: 0, rows: 10000/10000"));
+ }
+}
