Adjust function signatures for newer PHPUnit versions

Will make an update to PHPUnit 8 or 9 easier.

tests/methods/DataRowCountTest.php

@@ -17,13 +17,7 @@ class DataRowCountTest extends TestCase {
      */
     protected $csv;
 
-    /**
-     * Setup
-     * Setup our test environment objects
-     *
-     * @access public
-     */
-    public function setUp() {
+    protected function setUp(): void {
         $this->csv = new Csv();
     }
 

tests/methods/OldRequireTest.php

@@ -11,11 +11,11 @@ use PHPUnit\Framework\TestCase;
  */
 class OldRequireTest extends TestCase {
 
-    protected function setUp() {
+    protected function setUp(): void {
         rename('vendor/autoload.php', '__autoload');
     }
 
-    protected function tearDown() {
+    protected function tearDown(): void {
         rename('__autoload', 'vendor/autoload.php');
     }
 

tests/methods/ParseTest.php

@@ -19,7 +19,7 @@ class ParseTest extends TestCase {
      *
      * @access public
      */
-    public function setUp() {
+    protected function setUp(): void {
         $this->csv = new Csv();
     }
 

tests/methods/SaveTest.php

@@ -15,7 +15,7 @@ class SaveTest extends TestCase {
     /**
      * Setup our test environment objects; will be called before each test.
      */
-    public function setUp() {
+    protected function setUp(): void {
         $this->csv = new Csv();
         $this->csv->auto(__DIR__ . '/../example_files/single_column.csv');
 

tests/methods/StreamTest.php

@@ -11,7 +11,7 @@ use PHPUnit\Framework\TestCase;
  */
 class StreamTest extends TestCase {
 
-    public function setUp() {
+    protected function setUp(): void {
         static $done;
         if ($done) {
             // Make sure we register the stream just once - or PHP will scream.

tests/methods/UnparseTest.php

@@ -14,7 +14,7 @@ class UnparseTest extends Testcase {
     /**
      * Setup our test environment objects; will be called before each test.
      */
-    public function setUp() {
+    protected function setUp(): void {
         $this->csv = new Csv();
         $this->csv->auto(__DIR__ . '/fixtures/auto-double-enclosure.csv');
     }