DisabledGlobalNetwork - allow disabling global network (with errors)

src/Exceptions/DisabledGlobalNetworkException.php

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+<?php
+
+namespace BitWasp\Bitcoin\Exceptions;
+
+class DisabledGlobalNetworkException extends \Exception
+{
+
+}

src/Network/DisabledGlobalNetwork.php

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+<?php
+
+namespace BitWasp\Bitcoin\Network;
+
+use BitWasp\Bitcoin\Exceptions\DisabledGlobalNetworkException;
+
+class DisabledGlobalNetwork implements NetworkInterface
+{
+    public function getAddressByte()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getHDPrivByte()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getHDPubByte()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getNetMagicBytes()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getP2shByte()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getPrivByte()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getSegwitBech32Prefix()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+    public function getSignedMessageMagic()
+    {
+        throw new DisabledGlobalNetworkException();
+    }
+}

tests/Network/DisabledGlobalNetworkTest.php

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+<?php
+
+namespace BitWasp\Bitcoin\Tests\Network;
+
+use BitWasp\Bitcoin\Network\DisabledGlobalNetwork;
+use BitWasp\Bitcoin\Network\NetworkInterface;
+use BitWasp\Bitcoin\Tests\AbstractTestCase;
+
+class DisabledGlobalNetworkTest extends AbstractTestCase
+{
+    public function getMethods()
+    {
+        $methods = [];
+        foreach (get_class_methods(NetworkInterface::class) as $method) {
+            $methods[] = [$method];
+        }
+        return $methods;
+    }
+
+    /**
+     * @expectedException \BitWasp\Bitcoin\Exceptions\DisabledGlobalNetworkException
+     * @dataProvider getMethods
+     * @param string $method
+     */
+    public function testThrows($method)
+    {
+        $network = new DisabledGlobalNetwork();
+        $network->{$method}();
+    }
+}