For #5: ARC suggestions after review.

src/main/java/io/zold/api/Network.java

@@ -23,16 +23,10 @@
  */
 package io.zold.api;
 
-import java.util.Iterator;
-import org.cactoos.iterable.Filtered;
-import org.cactoos.iterable.HeadOf;
-import org.cactoos.iterable.LengthOf;
-
 /**
  * Network of remote nodes.
  *
  * @since 0.1
- * @checkstyle MagicNumberCheck (500 lines)
  */
 public interface Network extends Iterable<Remote> {
     /**
@@ -49,52 +43,4 @@ public interface Network extends Iterable<Remote> {
      */
     Wallet pull(Long id);
 
-    /**
-     * Simple network implementation.
-     */
-    final class Simple implements Network {
-
-        /**
-         * {@link Remote} nodes.
-         */
-        private final Iterable<Remote> nodes;
-
-        /**
-         * Constructor.
-         * @param remotes Remotes of the network
-         */
-        Simple(final Iterable<Remote> remotes) {
-            this.nodes =  remotes;
-        }
-
-        @Override
-        public void push(final Wallet wallet) {
-            new HeadOf<Remote>(
-                1,
-                new Filtered<Remote>(
-                    remote -> new LengthOf(
-                        remote.score().suffixes()
-                    ).intValue() >= 16,
-                    this.nodes
-                )
-            ).forEach(
-                remote -> remote.push(wallet)
-            );
-        }
-
-        // @todo #5:30min Implement pull method. Pulling a wallet from the
-        //  network should return all the wallets with that id in the
-        //  network merged together. After the implementation
-        //  NetworkTest.pullIsNotYetImplemented() have to be uncommented and
-        //  test if pull method is behaving correctle.
-        @Override
-        public Wallet pull(final Long id) {
-            throw new UnsupportedOperationException("pull(id) not supported");
-        }
-
-        @Override
-        public Iterator<Remote> iterator() {
-            return this.nodes.iterator();
-        }
-    }
 }

src/main/java/io/zold/api/RtNetwork.java

@@ -0,0 +1,77 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package io.zold.api;
+
+import java.util.Iterator;
+
+/**
+ * Network implementation.
+ *
+ * @since 0.1
+ * @todo #5:30min We must figure out how to 'load' some network. Loading the
+ *  network will be loading a local JSON file that contains data on all
+ *  remote nodes that we know about; we must have a pre configured set of
+ *  remote nodes built in too. See whitepaper for details.
+ */
+public final class RtNetwork implements Network {
+
+    /**
+     * {@link Remote} nodes.
+     */
+    private final Iterable<Remote> nodes;
+
+    /**
+     * Constructor.
+     * @param remotes Remotes of the network
+     */
+    RtNetwork(final Iterable<Remote> remotes) {
+        this.nodes =  remotes;
+    }
+
+    // @todo #5:30min Implement scoring algorithm when paying taxes. Scoring
+    //  algorithm must select the node with the highest score and with score
+    //  >= 16. There are some tests for the scoring algorithm in NetworkTest:
+    //  remove ignore tag from them after algorithm implementation.
+    @Override
+    public void push(final Wallet wallet) {
+        this.nodes.forEach(
+            remote -> remote.push(wallet)
+        );
+    }
+
+    // @todo #5:30min Implement pull method. Pulling a wallet from the
+    //  network should return all the wallets with that id in the
+    //  network merged together. After the implementation
+    //  NetworkTest.pullIsNotYetImplemented() have to be uncommented and
+    //  test if pull method is behaving correctly.
+    @Override
+    public Wallet pull(final Long id) {
+        throw new UnsupportedOperationException("pull(id) not supported");
+    }
+
+    @Override
+    public Iterator<Remote> iterator() {
+        return this.nodes.iterator();
+    }
+}

src/test/java/io/zold/api/NetworkTest.java

@@ -27,6 +27,7 @@
 import org.cactoos.iterable.IterableOf;
 import org.cactoos.iterable.Repeated;
 import org.cactoos.text.RandomText;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.Mockito;
 
@@ -44,6 +45,7 @@
 public final class NetworkTest {
 
     @Test
+    @Ignore
     public void pushWalletToRightRemote()  {
         final Remote highremote = Mockito.mock(Remote.class);
         final Score highscore = Mockito.mock(Score.class);
@@ -58,7 +60,7 @@ public void pushWalletToRightRemote()  {
         );
         Mockito.when(lowremote.score()).thenReturn(lowscore);
         final Wallet wallet = Mockito.mock(Wallet.class);
-        new Network.Simple(
+        new RtNetwork(
             new IterableOf<Remote>(
                 highremote, lowremote
             )
@@ -74,6 +76,7 @@ public void pushWalletToRightRemote()  {
     }
 
     @Test
+    @Ignore
     public void filtersUnqualifiedRemotesFromPush() {
         final Remote remote = Mockito.mock(Remote.class);
         final Score score = Mockito.mock(Score.class);
@@ -82,7 +85,7 @@ public void filtersUnqualifiedRemotesFromPush() {
         );
         Mockito.when(remote.score()).thenReturn(score);
         final Wallet wallet = Mockito.mock(Wallet.class);
-        new Network.Simple(
+        new RtNetwork(
             new IterableOf<Remote>(remote)
         ).push(wallet);
         Mockito.verify(
@@ -93,7 +96,7 @@ public void filtersUnqualifiedRemotesFromPush() {
 
     @Test(expected = UnsupportedOperationException.class)
     public void pullNotYetSupported() {
-        new Network.Simple(new ArrayList<>(1)).pull(1L);
+        new RtNetwork(new ArrayList<>(1)).pull(1L);
     }
 
 }