Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1485#discussion_r150263213
--- Diff:
core/src/test/java/org/apache/carbondata/core/carbon/datastorage/filesystem/store/impl/FileFactoryImplUnitTest.java
---
@@ -147,5 +149,39 @@ public static void tearDown() {
FileFactory.getDataOutputStream(filePath, FileFactory.FileType.VIEWFS);
assertNotNull(FileFactory.getCarbonFile(filePath,
FileFactory.FileType.HDFS));
}
+
+ @Test public void testTruncateFile() {
+ FileWriter writer = null;
+ try {
+ // generate a file
+ String path = new File("truncatFile").getCanonicalPath();
+ writer = new FileWriter(path);
+ for (int i = 0; i < 4000; i++) {
+ writer.write("test truncate file method");
+ }
+ writer.close();
+ CarbonFile file = FileFactory.getCarbonFile(path);
+ assertTrue(file.getSize() == 100000L);
+
+ // truncate file to 4000 bytes
+ FileFactory.truncateFile(
+ path,
+ FileFactory.getFileType(path),
+ 4000);
+ file = FileFactory.getCarbonFile(path);
+ assertTrue(file.getSize() == 4000L);
--- End diff --
better to use assertEquals so that it will print the size
---
