Call assertions via "$this" everywhere

Author: SvenRtbg

tests/Array_PHP74_Test.php

@@ -21,7 +21,7 @@ public function testJsonMapper()
         $json = json_decode('{"files": ["test.txt"]}');
         $jsonMapper = new \JsonMapper();
         $array = $jsonMapper->map($json, new JsonMapperTest_PHP74Array());
-        self::assertCount(1, $array->files);
+        $this->assertCount(1, $array->files);
     }
 
     public function testMapArrayValueToStringProperty()

tests/Array_PHP80_Test.php

@@ -22,7 +22,7 @@ public function testJsonMapper()
         $jsonMapper = new \JsonMapper();
         $jsonMapper->bIgnoreVisibility = true;
         $array = $jsonMapper->map($json, JsonMapperTest_PHP80Array::class);
-        self::assertCount(1, $array->getFiles());
-        self::assertInstanceOf(JsonMapperTest_ArrayValueForStringProperty::class, $array->getFiles()[0]);
+        $this->assertCount(1, $array->getFiles());
+        $this->assertInstanceOf(JsonMapperTest_ArrayValueForStringProperty::class, $array->getFiles()[0]);
     }
 }

tests/NameMappingTest.php

@@ -27,7 +27,7 @@ public function testItSetKeysIfReturnedByUndefinedPropertyHandler(): void
             new JsonMapperTest_Simple()
         );
 
-        self::assertSame('abc', $sn->hyphenValue);
+        $this->assertSame('abc', $sn->hyphenValue);
     }
 
     public function testItDoesNotMapKeyIfUndefinedPropertyHandlerDoesNotReturnValue(): void
@@ -45,6 +45,6 @@ public function testItDoesNotMapKeyIfUndefinedPropertyHandlerDoesNotReturnValue(
             new JsonMapperTest_Simple()
         );
 
-        self::assertNull($sn->hyphenValue);
+        $this->assertNull($sn->hyphenValue);
     }
 }