diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..2f0f4a0
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,20 @@
+language: php
+
+sudo: false
+
+cache:
+    directories:
+        - $HOME/.composer/cache
+
+php:
+    - 5.6
+    - 7.0
+
+before_install:
+    - travis_retry composer self-update
+
+install:
+    - travis_retry composer update --no-interaction
+
+script:
+    - composer test-ci
\ No newline at end of file
diff --git a/README.md b/README.md
index f478cd8..1c522f0 100644
--- a/README.md
+++ b/README.md
@@ -2,12 +2,12 @@
 
 Implementation of the basic functionality of the Modbus TCP and UDP based protocol using PHP. 
 
-**NOTE: This is a fork to fix & update the library code (and code alone). Notably, the tests are probably all broken.**
+**NOTE: This is a fork to fix & update the library code (and code alone).**
 
-> **What's new**
-> 
-> This fork adds a namespace and fixes issues encountered when porting to PHP 7
+##What's new
 
+* This fork adds a namespace and fixes issues encountered when porting to PHP 7
+* Fixes/replaces old MS Windows specific tests
 
 ## Implemented features
 
@@ -26,6 +26,7 @@ Implementation of the basic functionality of the Modbus TCP and UDP based protoc
 ## Requirements
 
  * The PHP extension php_sockets.dll should be enabled (server php.ini file)
+ * PHP 5.3.2 (5.6 for tests)
 
  
 ## Example
@@ -53,6 +54,19 @@ Use the `setTimeout($seconds)` and `setSocketTimeout($read_timeout_sec, $write_t
 
 Most of the code is (to some extent) commented and documented with PhpDoc. You should get useful tooltips in your IDE.
 
+## Tests
+
+To run the test suite, you need install the dependencies via composer, then
+run PHPUnit. 
+
+NB: PHP 5.6+ is required for tests
+
+    composer install
+    composer test # or under Windows vendor\bin\phunit.bat
+    
+To report test coverage (created inside ./report/html):
+
+    composer test-coverage
 
 ## GoogleCode legacy docs & downloads
 
diff --git a/composer.json b/composer.json
index d52d076..9adf523 100644
--- a/composer.json
+++ b/composer.json
@@ -32,5 +32,10 @@
     "psr-4": {
       "Tests\\": "tests/"
     }
+  },
+  "scripts": {
+    "test": "vendor/bin/phpunit",
+    "test-ci": "vendor/bin/phpunit --coverage-clover report/coverage.xml",
+    "test-coverage": "vendor/bin/phpunit --coverage-html report/html"
   }
 }
diff --git a/examples/example_750841_Mmemory.php b/examples/example_750841_Mmemory.php
index 6fa8f90..4cb5f03 100644
--- a/examples/example_750841_Mmemory.php
+++ b/examples/example_750841_Mmemory.php
@@ -1,12 +1,10 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
 
 use PHPModbus\ModbusMaster;
 use PHPModbus\PhpType;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$quantity = ((int)$_GET['quantity']) ?: 6;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMaster($ip, 'UDP');
 
@@ -52,9 +50,9 @@ try {
     for ($i = 0, $max = count($recData); $i < $max; $i += 2) {
         ?>
         <tr>
-            <td><?php echo $reference+($i/2) ?></td>
-            <td><?php echo PhpType::bytes2signedInt([$recData[$i], $recData[$i+1]]) ?></td>
-            <td><?php echo PhpType::bytes2unsignedInt([$recData[$i], $recData[$i+1]]) ?></td>
+            <td><?php echo $reference + ($i / 2) ?></td>
+            <td><?php echo PhpType::bytes2signedInt([$recData[$i], $recData[$i + 1]]) ?></td>
+            <td><?php echo PhpType::bytes2unsignedInt([$recData[$i], $recData[$i + 1]]) ?></td>
             <td><?php echo $recData[$i] ?></td>
             <td><?php echo $recData[$i + 1] ?></td>
             <td><?php echo sprintf("%08d", decbin($recData[$i])) ?></td>
diff --git a/examples/example_datatype.php b/examples/example_datatype.php
index aeb0a7b..402bdf9 100644
--- a/examples/example_datatype.php
+++ b/examples/example_datatype.php
@@ -1,12 +1,10 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMaster;
 use PHPModbus\PhpType;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$quantity = ((int)$_GET['quantity']) ?: 10;
-
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 $modbus = new ModbusMaster($ip, 'UDP');
 
 try {
diff --git a/examples/example_fc1.php b/examples/example_fc1.php
index 34d7e12..b24382c 100644
--- a/examples/example_fc1.php
+++ b/examples/example_fc1.php
@@ -1,11 +1,9 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
 
 use PHPModbus\ModbusMaster;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$quantity = ((int)$_GET['quantity']) ?: 12;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMaster($ip, 'UDP');
 
diff --git a/examples/example_fc15.php b/examples/example_fc15.php
index ced94a6..0d58a45 100644
--- a/examples/example_fc15.php
+++ b/examples/example_fc15.php
@@ -1,9 +1,9 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMasterUdp;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 0;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMasterUdp($ip);
 
diff --git a/examples/example_fc16.php b/examples/example_fc16.php
index 1cd8e49..1802466 100644
--- a/examples/example_fc16.php
+++ b/examples/example_fc16.php
@@ -1,9 +1,9 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMasterUdp;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMasterUdp($ip);
 
diff --git a/examples/example_fc2.php b/examples/example_fc2.php
index d91c550..9e76ed4 100644
--- a/examples/example_fc2.php
+++ b/examples/example_fc2.php
@@ -2,10 +2,7 @@
 
 use PHPModbus\ModbusMaster;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 0;
-$quantity = ((int)$_GET['quantity']) ?: 2;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMaster($ip, 'UDP');
 
diff --git a/examples/example_fc22.php b/examples/example_fc22.php
index 28ca792..0dc935e 100644
--- a/examples/example_fc22.php
+++ b/examples/example_fc22.php
@@ -1,9 +1,9 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMasterUdp;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMasterUdp($ip);
 
diff --git a/examples/example_fc23.php b/examples/example_fc23.php
index a21aea4..45ab065 100644
--- a/examples/example_fc23.php
+++ b/examples/example_fc23.php
@@ -1,11 +1,9 @@
 <?php
-use PHPModbus\ModbusMasterUdp;
+require __DIR__ . '/../vendor/autoload.php';
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$quantity = ((int)$_GET['quantity']) ?: 6;
+use PHPModbus\ModbusMasterUdp;
 
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 $modbus = new ModbusMasterUdp($ip);
 
 // Data to be writen
diff --git a/examples/example_fc3.php b/examples/example_fc3.php
index d3d12bd..31f8ec9 100644
--- a/examples/example_fc3.php
+++ b/examples/example_fc3.php
@@ -1,11 +1,9 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
 
 use PHPModbus\ModbusMaster;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$quantity = ((int)$_GET['quantity']) ?: 6;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMaster($ip, 'UDP');
 
diff --git a/examples/example_fc4.php b/examples/example_fc4.php
index eefa528..bf2e320 100644
--- a/examples/example_fc4.php
+++ b/examples/example_fc4.php
@@ -1,10 +1,9 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMasterUdp;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 0;
-$quantity = ((int)$_GET['quantity']) ?: 2;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
 
 $modbus = new ModbusMasterUdp($ip);
 
diff --git a/examples/example_fc5.php b/examples/example_fc5.php
index 151aa4e..1dfe897 100644
--- a/examples/example_fc5.php
+++ b/examples/example_fc5.php
@@ -1,10 +1,10 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMasterUdp;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$value = ((bool)$_GET['value']) ?: false;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
+$value = isset($_GET['value']) ? ((bool)$_GET['value']) : false;
 
 $modbus = new ModbusMasterUdp($ip);
 
diff --git a/examples/example_fc6.php b/examples/example_fc6.php
index 50e5985..6cbf022 100644
--- a/examples/example_fc6.php
+++ b/examples/example_fc6.php
@@ -1,10 +1,10 @@
 <?php
+require __DIR__ . '/../vendor/autoload.php';
+
 use PHPModbus\ModbusMasterUdp;
 
-$ip = filter_var($_GET['ip'], FILTER_VALIDATE_IP) ? $_GET['ip'] : '192.192.15.51';
-$unitId = ((int)$_GET['unitid']) ?: 0;
-$reference = ((int)$_GET['reference']) ?: 12288;
-$value = ((int)$_GET['value']) ?: -1000;
+require_once __DIR__ . '/request_input_data.php'; // 'ip', 'unitid','reference','quantity' are read from $_GET
+$value = isset($_GET['value']) ? ((int)$_GET['value']) : -1000;
 
 $modbus = new ModbusMasterUdp($ip);
 
diff --git a/examples/request_input_data.php b/examples/request_input_data.php
new file mode 100644
index 0000000..39686d4
--- /dev/null
+++ b/examples/request_input_data.php
@@ -0,0 +1,12 @@
+<?php
+
+$ipPrefix = '192.192.15.'; // change to '' if you want to allow request to be sent to every possible ip
+
+$ip = '192.192.15.51';
+if (isset($_GET['ip']) && filter_var($ipPrefix . $_GET['ip'], FILTER_VALIDATE_IP)) {
+    $ip = $ipPrefix . $_GET['ip'];
+}
+
+$unitId = isset($_GET['unitid']) ? (int)$_GET['unitid'] : 0;
+$reference = isset($_GET['reference']) ? (int)$_GET['reference'] : 12288;
+$quantity = isset($_GET['quantity']) ? (int)$_GET['quantity'] : 6;
\ No newline at end of file
diff --git a/phpunit.xml b/phpunit.xml.dist
similarity index 71%
rename from phpunit.xml
rename to phpunit.xml.dist
index fb3d442..891c4ea 100644
--- a/phpunit.xml
+++ b/phpunit.xml.dist
@@ -15,17 +15,6 @@
         <directory suffix="Test.php">./tests/*</directory>
     </testsuite>
 
-    <logging>
-        <log type="coverage-html"
-             target="report/coverage"
-             charset="UTF-8"
-             yui="true"
-             highlight="true"
-             lowUpperBound="35"
-             highLowerBound="70"/>
-        <log type="junit" target="report/junit.xml" logIncompleteSkipped="false"/>
-    </logging>
-
     <filter>
         <whitelist processUncoveredFilesFromWhitelist="true">
             <directory suffix=".php">src</directory>
diff --git a/tests/ModbusMaster/Fc15WriteMultipleCoilsTest.php b/tests/ModbusMaster/Fc15WriteMultipleCoilsTest.php
index bc59828..2d7a178 100644
--- a/tests/ModbusMaster/Fc15WriteMultipleCoilsTest.php
+++ b/tests/ModbusMaster/Fc15WriteMultipleCoilsTest.php
@@ -18,4 +18,24 @@ class Fc15WriteMultipleCoilsTest extends MockServerTestCase
         $packetWithoutTransactionId = substr($clientData[0], 4);
         $this->assertEquals('00000008000f300000030105', $packetWithoutTransactionId);
     }
+
+    public function testFc15WriteMultipleCoilsWithMultiWordPacket()
+    {
+        $mockResponse = 'a51100000006000f00000020';
+        $clientData = static::executeWithMockServer($mockResponse, function ($port) {
+            $modbus = new ModbusMaster('127.0.0.1', 'TCP');
+            $modbus->port = $port;
+
+            $this->assertTrue($modbus->fc15(0, 0,
+                [
+                    1, 0, 1, 1, 0, 1, 1, 1,
+                    1, 1, 1, 1, 0, 0, 0, 0,
+                    0, 0, 0, 0, 1, 1, 1, 1,
+                    1, 1, 1, 1, 1, 1, 1, 1,
+                ]));
+        });
+
+        $packetWithoutTransactionId = substr($clientData[0], 4);
+        $this->assertEquals('0000000b000f0000002004ed0ff0ff', $packetWithoutTransactionId);
+    }
 }
\ No newline at end of file
diff --git a/tests/ModbusMaster/MockServerTestCase.php b/tests/ModbusMaster/MockServerTestCase.php
index b6e93fd..ba80b51 100644
--- a/tests/ModbusMaster/MockServerTestCase.php
+++ b/tests/ModbusMaster/MockServerTestCase.php
@@ -23,6 +23,11 @@ abstract class MockServerTestCase extends TestCase
                 $clientData[] = $output;
             });
 
+            if (strpos(PHP_OS, 'WIN') === false || getenv('MOCKSERVER_TIMEOUT_USEC') !== false) {
+                // wait to spin up. needed for linux. unnessecary on Windows 10.
+                // Ugly but even with 150ms sleep test run faster on Linux
+                usleep(getenv('MOCKSERVER_TIMEOUT_USEC') ?: 150000);
+            }
             $closure($port);
         });
 
diff --git a/tests/ModbusMaster/ModbusExceptionTest.php b/tests/ModbusMaster/ModbusExceptionTest.php
index 0d31651..aa1c6df 100644
--- a/tests/ModbusMaster/ModbusExceptionTest.php
+++ b/tests/ModbusMaster/ModbusExceptionTest.php
@@ -1,38 +1,42 @@
 <?php
 namespace Tests\ModbusMaster;
 
+use InvalidArgumentException;
 use PHPModbus\ModbusMaster;
 use PHPModbus\ModbusMasterTcp;
 
 class ModbusExceptionTest extends MockServerTestCase
 {
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage Unknown socket protocol, should be 'TCP' or 'UDP'
+     */
     public function testThrowProtocolMismatchException()
     {
-        $this->expectException(\Exception::class);
-        $this->expectExceptionMessage("Unknown socket protocol, should be 'TCP' or 'UDP'");
-
         $modbus = new ModbusMaster('127.0.0.1', 'Mismatch');
         $modbus->readCoils(0, 256, 1);
     }
 
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage socket_connect() failed. Reason: ()No connection could be made because the target machine actively refused it
+     */
     public function testPortClosedException()
     {
-        $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('socket_connect() failed. Reason: ()No connection could be made because the target machine actively refused it.');
-
         $modbus = new ModbusMasterTcp('127.0.0.1');
         $modbus->setSocketTimeout(0.2, 0.2);
         $modbus->readCoils(0, 256, 1);
     }
 
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessageRegExp /Watchdog time expired \[ 0\.5 sec \]!!! Connection to 127\.0\.0\.1:.* is not established/
+     */
     public function testTimeoutException()
     {
-        $this->expectException(\Exception::class);
 
         $mockResponse = '89130000000400010101'; // respond with 1 byte (00000001 bits set) [1]
         static::executeWithMockServer($mockResponse, function ($port) {
-            $this->expectExceptionMessage("Watchdog time expired [ 0.5 sec ]!!! Connection to 127.0.0.1:{$port} is not established.");
-
             $modbus = new ModbusMaster('127.0.0.1', 'UDP');
             $modbus->port = $port;
             $modbus->setTimeout(0.5);
@@ -42,12 +46,12 @@ class ModbusExceptionTest extends MockServerTestCase
         }, 'UDP', 1);
     }
 
-
+    /**
+     * @expectedException \Exception
+     * @expectedExceptionMessage Modbus response error code: 3 (ILLEGAL DATA VALUE)
+     */
     public function testThrowIllegalDataValueException()
     {
-        $this->expectException(\Exception::class);
-        $this->expectExceptionMessage('Modbus response error code: 3 (ILLEGAL DATA VALUE)');
-
         $mockResponse = 'da8700000003008303'; // respond with 1 WORD (2 bytes) [0, 3]
         $clientData = static::executeWithMockServer($mockResponse, function ($port) {
             $modbus = new ModbusMaster('127.0.0.1', 'TCP');
diff --git a/tests/ModbusMaster/UdpFc1ReadCoilsTest.php b/tests/ModbusMaster/UdpFc1ReadCoilsTest.php
index 78a6e34..a2d563e 100644
--- a/tests/ModbusMaster/UdpFc1ReadCoilsTest.php
+++ b/tests/ModbusMaster/UdpFc1ReadCoilsTest.php
@@ -13,7 +13,7 @@ class UdpFc1ReadCoilsTest extends MockServerTestCase
             $modbus = new ModbusMasterUdp('127.0.0.1');
             $modbus->port = $port;
 
-            usleep(50000); // no idea how to fix this. wait for server to "warm" up or modbus UDP socket will timeout. does not occur with TCP
+            usleep(150000); // no idea how to fix this. wait for server to "warm" up or modbus UDP socket will timeout. does not occur with TCP
             $this->assertEquals([1], $modbus->readCoils(0, 256, 1));
         }, 'UDP');
 
diff --git a/tests/PhpType/Bytes2MixedTest.php b/tests/PhpType/Bytes2MixedTest.php
index fcaa25b..3692910 100644
--- a/tests/PhpType/Bytes2MixedTest.php
+++ b/tests/PhpType/Bytes2MixedTest.php
@@ -6,7 +6,7 @@ use PHPUnit\Framework\TestCase;
 
 class PhpTypeBytes2Mixed extends TestCase
 {
-    const DATA = [
+    private $data = [
         "0" => 125, // 32098 (DINT)
         "1" => 98,
         "2" => 0,
@@ -31,15 +31,15 @@ class PhpTypeBytes2Mixed extends TestCase
 
     public function testUnsignedInt()
     {
-        $this->assertEquals(32098, PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 4)));
+        $this->assertEquals(32098, PhpType::bytes2unsignedInt(array_slice($this->data, 0, 4)));
     }
 
     public function testSignedInt()
     {
-        $this->assertEquals(0, PhpType::bytes2signedInt(array_slice(self::DATA, 4, 4)));
-        $this->assertEquals(0, PhpType::bytes2signedInt(array_slice(self::DATA, 8, 4)));
-        $this->assertEquals(-1, PhpType::bytes2signedInt(array_slice(self::DATA, 12, 4)));
-        $this->assertEquals(-25000, PhpType::bytes2signedInt(array_slice(self::DATA, 16, 2)));
-        $this->assertEquals(25000, PhpType::bytes2signedInt(array_slice(self::DATA, 18, 2)));
+        $this->assertEquals(0, PhpType::bytes2signedInt(array_slice($this->data, 4, 4)));
+        $this->assertEquals(0, PhpType::bytes2signedInt(array_slice($this->data, 8, 4)));
+        $this->assertEquals(-1, PhpType::bytes2signedInt(array_slice($this->data, 12, 4)));
+        $this->assertEquals(-25000, PhpType::bytes2signedInt(array_slice($this->data, 16, 2)));
+        $this->assertEquals(25000, PhpType::bytes2signedInt(array_slice($this->data, 18, 2)));
     }
 }
diff --git a/tests/PhpType/Bytes2RealTest.php b/tests/PhpType/Bytes2RealTest.php
index 2fd7b80..1bb7458 100644
--- a/tests/PhpType/Bytes2RealTest.php
+++ b/tests/PhpType/Bytes2RealTest.php
@@ -7,7 +7,7 @@ use PHPUnit_Framework_TestCase;
 
 class Bytes2Real extends PHPUnit_Framework_TestCase
 {
-    const DATA = [
+    private $data = [
         0 => 0,
         1 => 0,
         2 => 68,
@@ -24,8 +24,8 @@ class Bytes2Real extends PHPUnit_Framework_TestCase
 
     public function testByte2Real()
     {
-        $this->assertEquals(1000, PhpType::bytes2float(array_slice(self::DATA, 0, 4)));
-        $this->assertEquals(2000, PhpType::bytes2float(array_slice(self::DATA, 4, 4)));
-        $this->assertEquals(1.25, PhpType::bytes2float(array_slice(self::DATA, 8, 4)));
+        $this->assertEquals(1000, PhpType::bytes2float(array_slice($this->data, 0, 4)));
+        $this->assertEquals(2000, PhpType::bytes2float(array_slice($this->data, 4, 4)));
+        $this->assertEquals(1.25, PhpType::bytes2float(array_slice($this->data, 8, 4)));
     }
 }
diff --git a/tests/PhpType/Bytes2SignedIntTest.php b/tests/PhpType/Bytes2SignedIntTest.php
index 362a30d..dcf4467 100644
--- a/tests/PhpType/Bytes2SignedIntTest.php
+++ b/tests/PhpType/Bytes2SignedIntTest.php
@@ -6,7 +6,7 @@ use PHPUnit\Framework\TestCase;
 
 class Bytes2SignedInt extends TestCase
 {
-    const DATA = [
+    private $data = [
         0xFF, // -1
         0xFF,
         0xFF,
@@ -31,12 +31,12 @@ class Bytes2SignedInt extends TestCase
 
     public function testByte2SignedInt()
     {
-        $this->assertEquals(-1, PhpType::bytes2signedInt(array_slice(self::DATA, 0, 2)));
-        $this->assertEquals(-1, PhpType::bytes2signedInt(array_slice(self::DATA, 0, 4)));
+        $this->assertEquals(-1, PhpType::bytes2signedInt(array_slice($this->data, 0, 2)));
+        $this->assertEquals(-1, PhpType::bytes2signedInt(array_slice($this->data, 0, 4)));
 
-        $this->assertEquals(0, PhpType::bytes2signedInt(array_slice(self::DATA, 4, 4)));
-        $this->assertEquals(1, PhpType::bytes2signedInt(array_slice(self::DATA, 8, 4)));
-        $this->assertEquals(-2147483648, PhpType::bytes2signedInt(array_slice(self::DATA, 12, 4)));
-        $this->assertEquals(2147483647, PhpType::bytes2signedInt(array_slice(self::DATA, 16, 4)));
+        $this->assertEquals(0, PhpType::bytes2signedInt(array_slice($this->data, 4, 4)));
+        $this->assertEquals(1, PhpType::bytes2signedInt(array_slice($this->data, 8, 4)));
+        $this->assertEquals(-2147483648, PhpType::bytes2signedInt(array_slice($this->data, 12, 4)));
+        $this->assertEquals(2147483647, PhpType::bytes2signedInt(array_slice($this->data, 16, 4)));
     }
 }
diff --git a/tests/PhpType/Bytes2StringTest.php b/tests/PhpType/Bytes2StringTest.php
index 8b5d788..851c331 100644
--- a/tests/PhpType/Bytes2StringTest.php
+++ b/tests/PhpType/Bytes2StringTest.php
@@ -6,7 +6,7 @@ use PHPUnit\Framework\TestCase;
 
 class Bytes2String extends TestCase
 {
-    const DATA = [ // String "Hello word!"
+    private $data = [ // String "Hello word!"
         0x48, //H
         0x65, //e
         0x6c, //l
@@ -26,7 +26,7 @@ class Bytes2String extends TestCase
 
     public function testBytesToString()
     {
-        $this->assertEquals('eHll oowlr!da', PhpType::bytes2string(self::DATA));
-        $this->assertEquals('Hello world!', PhpType::bytes2string(self::DATA, true));
+        $this->assertEquals('eHll oowlr!da', PhpType::bytes2string($this->data));
+        $this->assertEquals('Hello world!', PhpType::bytes2string($this->data, true));
     }
 }
diff --git a/tests/PhpType/Bytes2UnSignedIntTest.php b/tests/PhpType/Bytes2UnSignedIntTest.php
index 2c424fc..14e2698 100644
--- a/tests/PhpType/Bytes2UnSignedIntTest.php
+++ b/tests/PhpType/Bytes2UnSignedIntTest.php
@@ -6,7 +6,7 @@ use PHPUnit\Framework\TestCase;
 
 class Bytes2UnSignedIntTest extends TestCase
 {
-    const DATA = [
+    private $data = [
         0xFF, // -1
         0xFF,
         0xFF,
@@ -31,12 +31,12 @@ class Bytes2UnSignedIntTest extends TestCase
 
     public function testByte2SignedInt()
     {
-        $this->assertEquals(65535, PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 2)));
-        $this->assertEquals(4294967295, PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 4)));
+        $this->assertEquals(65535, PhpType::bytes2unsignedInt(array_slice($this->data, 0, 2)));
+        $this->assertEquals(4294967295, PhpType::bytes2unsignedInt(array_slice($this->data, 0, 4)));
 
-        $this->assertEquals(0, PhpType::bytes2unsignedInt(array_slice(self::DATA, 4, 4)));
-        $this->assertEquals(1, PhpType::bytes2unsignedInt(array_slice(self::DATA, 8, 4)));
-        $this->assertEquals(2147483648, PhpType::bytes2unsignedInt(array_slice(self::DATA, 12, 4)));
-        $this->assertEquals(2147483647, PhpType::bytes2unsignedInt(array_slice(self::DATA, 16, 4)));
+        $this->assertEquals(0, PhpType::bytes2unsignedInt(array_slice($this->data, 4, 4)));
+        $this->assertEquals(1, PhpType::bytes2unsignedInt(array_slice($this->data, 8, 4)));
+        $this->assertEquals(2147483648, PhpType::bytes2unsignedInt(array_slice($this->data, 12, 4)));
+        $this->assertEquals(2147483647, PhpType::bytes2unsignedInt(array_slice($this->data, 16, 4)));
     }
 }
diff --git a/tests/PhpType/PhpTypeArrayExceptionWithTextArrayTest.php b/tests/PhpType/PhpTypeArrayExceptionWithTextArrayTest.php
index 0565a13..62efe58 100644
--- a/tests/PhpType/PhpTypeArrayExceptionWithTextArrayTest.php
+++ b/tests/PhpType/PhpTypeArrayExceptionWithTextArrayTest.php
@@ -6,22 +6,26 @@ use PHPUnit\Framework\TestCase;
 
 class PhpTypeArrayExceptionWithTextArrayTest extends TestCase
 {
-    const DATA = [
+    private $data = [
         "0" => 100, // 32098 (DINT)
         "1" => "e",
         "2" => 0,
         "3" => 0
     ];
 
+    /**
+     * @expectedException \Exception
+     */
     public function testExceptionWhenSize2ContainsString()
     {
-        $this->expectException(\Exception::class);
-        PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 2));
+        PhpType::bytes2unsignedInt(array_slice($this->data, 0, 2));
     }
 
+    /**
+     * @expectedException \Exception
+     */
     public function testExceptionWhenSize4ContainsString()
     {
-        $this->expectException(\Exception::class);
-        PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 4));
+        PhpType::bytes2unsignedInt(array_slice($this->data, 0, 4));
     }
 }
diff --git a/tests/PhpType/PhpTypeArraySizeExceptionsTest.php b/tests/PhpType/PhpTypeArraySizeExceptionsTest.php
index 6003ad4..1782fc2 100644
--- a/tests/PhpType/PhpTypeArraySizeExceptionsTest.php
+++ b/tests/PhpType/PhpTypeArraySizeExceptionsTest.php
@@ -6,7 +6,7 @@ use PHPUnit\Framework\TestCase;
 
 class PhpTypeArraySizeExceptionsTest extends TestCase
 {
-    const DATA = [
+    private $data = [
         "0" => 100, // 32098 (DINT)
         "1" => 2,
         "2" => 0,
@@ -15,32 +15,38 @@ class PhpTypeArraySizeExceptionsTest extends TestCase
         "5" => 2
     ];
 
+    /**
+     * @expectedException \Exception
+     */
     public function testExceptionWhenSizeShort()
     {
-        $this->expectException(\Exception::class);
-        PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 1));
+        PhpType::bytes2unsignedInt(array_slice($this->data, 0, 1));
     }
 
+    /**
+     * @expectedException \Exception
+     */
     public function testExceptionWhenSizeShort3()
     {
-        $this->expectException(\Exception::class);
-        PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 3));
+        PhpType::bytes2unsignedInt(array_slice($this->data, 0, 3));
     }
 
+    /**
+     * @expectedException \Exception
+     */
     public function testExceptionWhenSizeLong()
     {
-        $this->expectException(\Exception::class);
-        PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 5));
+        PhpType::bytes2unsignedInt(array_slice($this->data, 0, 5));
     }
 
     public function testNoExceptionWhenSize2()
     {
-        $this->assertEquals(25602, PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 2)));
+        $this->assertEquals(25602, PhpType::bytes2unsignedInt(array_slice($this->data, 0, 2)));
     }
 
     public function testNoExceptionWhenSize4()
     {
-        $this->assertEquals(25602, PhpType::bytes2unsignedInt(array_slice(self::DATA, 0, 4)));
+        $this->assertEquals(25602, PhpType::bytes2unsignedInt(array_slice($this->data, 0, 4)));
     }
 
 }
\ No newline at end of file