public void assertValidHdfs(String data, String path) {
		validation.verifyHdfsTestContent(data, path);
	}
Verifies that the content of file on HDFS is the same as the data.

@param data The data expected in the file.
@param path The path/filename of the file on hdfs.
spring-xd-integration-test/src/test/java/org/springframework/xd/integration/test/AbstractIntegrationTest.java