home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Java example source code file (BaseSchemeTest.java)

This example Java source code file (BaseSchemeTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, baseschemetest, before, classpathresource, collection, exception, net, network, recordreader, recordwriter, scheme, test, util

The BaseSchemeTest.java Java example source code

 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    Licensed 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.deeplearning4j.cli.schemes;

import org.canova.api.records.reader.RecordReader;
import org.canova.api.records.writer.RecordWriter;
import org.canova.api.writable.Writable;
import org.deeplearning4j.cli.api.schemes.Scheme;
import org.junit.Before;
import org.junit.Test;
import org.nd4j.linalg.io.ClassPathResource;

import java.net.URI;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import static org.junit.Assert.*;

 * Tests scheme for creating record writers and readers
 * Initializes scheme
 * Creates a new record reader for a test data set
 * Asserts number of columns in reader
 * Uses a record writer to write to file
 * Creates another record reader to assert columns
 * and confirm that data was written to file
 *  @author sonali
public abstract class BaseSchemeTest {
  protected Scheme scheme;

  public void before() {

   * Initializes the appropriate scheme for testing
   * @return scheme
  public  Scheme getScheme() {
    return scheme;

  public abstract void initScheme();

  public void testScheme() throws Exception {
    Scheme scheme = getScheme();
    RecordReader recordReader = scheme.createReader(new ClassPathResource("iris.txt").getURI());

    while (recordReader.hasNext()) {
      Collection<Writable> record = recordReader.next();
      assertEquals(1, record.size());

    recordReader = scheme.createReader(new ClassPathResource("iris.txt").getURI());

    List<Collection records = new ArrayList<>();
    int count = 0;
    RecordWriter writer = scheme.createWriter(URI.create("test_out.txt"));

    for (Collection<Writable> record : records) {
      assertEquals(1, record.size());

    recordReader = scheme.createReader(URI.create("test_out.txt"));

    while (recordReader.hasNext()) {
      Collection<Writable> record = recordReader.next();
      assertEquals(1, record.size());

    assertEquals(1, count);


Other Java examples (source code examples)

Here is a short list of links related to this Java BaseSchemeTest.java source code file:

my book on functional programming


new blog posts


Copyright 1998-2019 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.