test: improve few assertions

Author: simPod

tests/Utils/AstGetOperationAstTest.php

@@ -38,7 +38,7 @@ public function testGetsAnOperationFromADcoumentWithNamedOpSubscription(): void
     public function testDoesNotGetMissingOperation(): void
     {
         $doc = Parser::parse('type Foo { field: String }');
-        self::assertEquals(AST::getOperationAST($doc), null);
+        self::assertNull(AST::getOperationAST($doc));
     }
 
     /** @see it('Does not get ambiguous unnamed operation') */
@@ -49,7 +49,7 @@ public function testDoesNotGetAmbiguousUnnamedOperation(): void
           mutation Test { field }
           subscription TestSub { field }
         ');
-        self::assertEquals(AST::getOperationAST($doc), null);
+        self::assertNull(AST::getOperationAST($doc));
     }
 
     /** @see it('Does not get ambiguous named operation') */
@@ -60,7 +60,7 @@ public function testDoesNotGetAmbiguousNamedOperation(): void
           mutation TestM { field }
           subscription TestS { field }
         ');
-        self::assertEquals(AST::getOperationAST($doc), null);
+        self::assertNull(AST::getOperationAST($doc));
     }
 
     /** @see it('Does not get misnamed operation') */
@@ -72,7 +72,7 @@ public function testDoesNotGetMisnamedOperation(): void
           mutation TestM { field }
           subscription TestS { field }
         ');
-        self::assertEquals(AST::getOperationAST($doc, 'Unknown'), null);
+        self::assertNull(AST::getOperationAST($doc, 'Unknown'));
     }
 
     /** @see it('Gets named operation') */

tests/Utils/MixedStoreTest.php

@@ -83,7 +83,7 @@ private function assertProvidesArrayAccess($key, $value): void
         self::assertFalse(isset($this->mixedStore[$key]), $err);
         $this->mixedStore[$key] = $value;
         self::assertTrue(isset($this->mixedStore[$key]), $err);
-        self::assertEquals((bool) $value, (bool) $this->mixedStore[$key], $err);
+        self::assertSame((bool) $value, (bool) $this->mixedStore[$key], $err);
         self::assertSame($value, $this->mixedStore[$key], $err);
         unset($this->mixedStore[$key]);
         self::assertFalse(isset($this->mixedStore[$key]), $err);