define all dataProvider as static

Author: Art4

tests/Fixtures/HelperTrait.php

@@ -33,7 +33,7 @@ trait HelperTrait
      *
      * @see http://json.org/
      */
-    public function jsonValuesProvider()
+    public static function jsonValuesProvider(): array
     {
         return [
             [new \stdClass()],
@@ -53,9 +53,9 @@ public function jsonValuesProvider()
      *
      * @see http://json.org/
      */
-    public function jsonValuesProviderWithoutObject()
+    public static function jsonValuesProviderWithoutObject(): array
     {
-        $data = $this->jsonValuesProvider();
+        $data = static::jsonValuesProvider();
 
         unset($data[0]);
 
@@ -67,9 +67,9 @@ public function jsonValuesProviderWithoutObject()
      *
      * @see http://json.org/
      */
-    public function jsonValuesProviderWithoutArray()
+    public static function jsonValuesProviderWithoutArray(): array
     {
-        $data = $this->jsonValuesProvider();
+        $data = static::jsonValuesProvider();
 
         unset($data[1]);
 
@@ -81,9 +81,9 @@ public function jsonValuesProviderWithoutArray()
      *
      * @see http://json.org/
      */
-    public function jsonValuesProviderWithoutString()
+    public static function jsonValuesProviderWithoutString(): array
     {
-        $data = $this->jsonValuesProvider();
+        $data = static::jsonValuesProvider();
 
         unset($data[2]);
 
@@ -95,9 +95,9 @@ public function jsonValuesProviderWithoutString()
      *
      * @see http://json.org/
      */
-    public function jsonValuesProviderWithoutObjectAndString()
+    public static function jsonValuesProviderWithoutObjectAndString(): array
     {
-        $data = $this->jsonValuesProvider();
+        $data = static::jsonValuesProvider();
 
         unset($data[0]);
         unset($data[2]);
@@ -110,7 +110,7 @@ public function jsonValuesProviderWithoutObjectAndString()
      *
      * @see http://json.org/
      */
-    public function jsonValuesAsStringProvider()
+    public static function jsonValuesAsStringProvider(): array
     {
         return [
             ['{}'],
@@ -130,9 +130,9 @@ public function jsonValuesAsStringProvider()
      *
      * @see http://json.org/
      */
-    public function jsonValuesAsStringProviderWithoutObject()
+    public static function jsonValuesAsStringProviderWithoutObject(): array
     {
-        $data = $this->jsonValuesAsStringProvider();
+        $data = static::jsonValuesAsStringProvider();
 
         unset($data[0]);
 

tests/Functional/ParsingTest.php

@@ -34,7 +34,7 @@ class ParsingTest extends \Art4\JsonApiClient\Tests\Fixtures\TestCase
     /**
      * Provide Parser
      */
-    public function createParserProvider()
+    public static function createParserProvider(): array
     {
         $errorAbortManagerParser = function ($string) {
             $manager = new ErrorAbortManager(new Factory());

tests/Functional/SerializerTest.php

@@ -34,7 +34,7 @@ class SerializerTest extends TestCase
     /**
      * Provide JSON API data
      */
-    public function jsonapiDataProvider()
+    public static function jsonapiDataProvider(): array
     {
         $path = str_replace('/', \DIRECTORY_SEPARATOR, __DIR__ . '/../files/');
         $files = [];