public virtual void TestConcatFileOnFile() { byte[] block = ContractTestUtils.Dataset(TestFileLen, 0, 255); ContractTestUtils.CreateFile(GetFileSystem(), target, false, block); GetFileSystem().Concat(target, new Path[] { srcFile }); ContractTestUtils.AssertFileHasLength(GetFileSystem(), target, TestFileLen * 2); ContractTestUtils.ValidateFileContent(ContractTestUtils.ReadDataset(GetFileSystem (), target, TestFileLen * 2), new byte[][] { block, block }); }