diff --git a/src/PhpSpreadsheet/Worksheet/AutoFilter.php b/src/PhpSpreadsheet/Worksheet/AutoFilter.php
index e705c9e3..a6b470c1 100644
--- a/src/PhpSpreadsheet/Worksheet/AutoFilter.php
+++ b/src/PhpSpreadsheet/Worksheet/AutoFilter.php
@@ -947,7 +947,7 @@ class AutoFilter
                         $ruleValue = 500;
                     }
 
-                    $maxVal = $this->calculateTopTenValue($columnID, $rangeStart[1] + 1, $rangeEnd[1], $toptenRuleType, $ruleValue);
+                    $maxVal = $this->calculateTopTenValue($columnID, $rangeStart[1] + 1, (int) $rangeEnd[1], $toptenRuleType, $ruleValue);
 
                     $operator = ($toptenRuleType == Rule::AUTOFILTER_COLUMN_RULE_TOPTEN_TOP)
                         ? Rule::AUTOFILTER_COLUMN_RULE_GREATERTHANOREQUAL
diff --git a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterAverageTop10Test.php b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterAverageTop10Test.php
index 33eca40b..79358823 100644
--- a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterAverageTop10Test.php
+++ b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterAverageTop10Test.php
@@ -160,7 +160,6 @@ class AutoFilterAverageTop10Test extends SetupTeardown
             )
             ->setRuleType(Rule::AUTOFILTER_RULETYPE_TOPTENFILTER);
 
-        $visible = $this->getVisible();
         self::assertCount(500, $this->getVisible(), 'Top10 Filter limited to 500 items plus ties');
     }
 }
diff --git a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterWeekTest.php b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterWeekTest.php
index f9a51870..6784d226 100644
--- a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterWeekTest.php
+++ b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/AutoFilterWeekTest.php
@@ -5,7 +5,6 @@ namespace PhpOffice\PhpSpreadsheetTests\Worksheet\AutoFilter;
 use DateTimeImmutable;
 use PhpOffice\PhpSpreadsheet\Worksheet\AutoFilter\Column;
 use PhpOffice\PhpSpreadsheet\Worksheet\AutoFilter\Column\Rule;
-use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
 
 class AutoFilterWeekTest extends SetupTeardown
 {
@@ -18,7 +17,7 @@ class AutoFilterWeekTest extends SetupTeardown
         ];
     }
 
-    private function setCells(Worksheet $sheet): void
+    private function setCells(): void
     {
         $sheet = $this->getSheet();
         $sheet->getCell('A1')->setValue('Date');
@@ -45,7 +44,7 @@ class AutoFilterWeekTest extends SetupTeardown
             $sheet = $this->getSheet();
             $dtStart = new DateTimeImmutable();
             $startDay = (int) $dtStart->format('d');
-            self::setCells($sheet);
+            $this->setCells();
 
             $maxRow = $this->maxRow;
             $autoFilter = $sheet->getAutoFilter();
diff --git a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/ColumnTest.php b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/ColumnTest.php
index 65fefb2f..c94cb3a4 100644
--- a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/ColumnTest.php
+++ b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/ColumnTest.php
@@ -37,7 +37,6 @@ class ColumnTest extends SetupTeardown
                 Rule::AUTOFILTER_COLUMN_RULE_EQUAL,
                 3
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         $result = $columnFilter->getColumnIndex();
         self::assertEquals('H', $result);
     }
@@ -47,7 +46,7 @@ class ColumnTest extends SetupTeardown
         $this->expectException(PhpSpreadsheetException::class);
         $this->expectExceptionMessage('Column is outside of current autofilter range.');
         $sheet = $this->initSheet();
-        $columnFilter = $sheet->getAutoFilter()->getColumn('B');
+        $sheet->getAutoFilter()->getColumn('B');
     }
 
     public function testSetColumnIndex(): void
@@ -60,7 +59,6 @@ class ColumnTest extends SetupTeardown
                 Rule::AUTOFILTER_COLUMN_RULE_EQUAL,
                 3
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         $expectedResult = 'G';
 
         $result = $columnFilter->setColumnIndex($expectedResult);
@@ -89,7 +87,6 @@ class ColumnTest extends SetupTeardown
                 Rule::AUTOFILTER_COLUMN_RULE_EQUAL,
                 3
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
 
         $result = $columnFilter->setFilterType(Column::AUTOFILTER_FILTERTYPE_DYNAMICFILTER);
         self::assertInstanceOf(Column::class, $result);
@@ -202,10 +199,11 @@ class ColumnTest extends SetupTeardown
             'maxVal' => 200,
         ];
 
-        $result = $columnFilter->setAttributes($attributeSet);
+        $columnFilter->setAttributes($attributeSet);
 
         foreach ($attributeSet as $attributeName => $attributeValue) {
             $result = $columnFilter->getAttribute($attributeName);
+            self::assertSame($attributeValue, $result);
         }
         $result = $columnFilter->getAttribute('nonExistentAttribute');
         self::assertNull($result);
diff --git a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/DateGroupTest.php b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/DateGroupTest.php
index 6d62ed1a..a89ebd5b 100644
--- a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/DateGroupTest.php
+++ b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/DateGroupTest.php
@@ -49,7 +49,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([6], $this->getVisible());
     }
 
@@ -74,7 +73,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         $sheet->getCell('C5')->setValue(''); // make an empty cell in range
         self::assertEquals([6], $this->getVisible());
     }
@@ -100,7 +98,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([], $this->getVisible());
     }
 
@@ -122,7 +119,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([6], $this->getVisible());
     }
 
@@ -141,7 +137,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([], $this->getVisible());
     }
 
@@ -161,7 +156,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([14, 38, 62], $this->getVisible());
     }
 
@@ -182,7 +176,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([38], $this->getVisible());
     }
 
@@ -204,7 +197,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([38], $this->getVisible());
     }
 
@@ -226,7 +218,6 @@ class DateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([], $this->getVisible());
     }
 }
diff --git a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleCustomTest.php b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleCustomTest.php
index 39103463..9f6b48bb 100644
--- a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleCustomTest.php
+++ b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleCustomTest.php
@@ -40,7 +40,6 @@ class RuleCustomTest extends SetupTeardown
                 3
             )
             ->setRuleType(Rule::AUTOFILTER_RULETYPE_CUSTOMFILTER);
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals($expectedResult, $this->getVisible());
     }
 
diff --git a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleDateGroupTest.php b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleDateGroupTest.php
index 24e33797..3a32a9eb 100644
--- a/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleDateGroupTest.php
+++ b/tests/PhpSpreadsheetTests/Worksheet/AutoFilter/RuleDateGroupTest.php
@@ -48,7 +48,6 @@ class RuleDateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([3, 5, 6, 7], $this->getVisible());
     }
 
@@ -68,7 +67,6 @@ class RuleDateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([3, 5, 6, 7], $this->getVisible());
     }
 
@@ -90,7 +88,6 @@ class RuleDateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([3, 5, 6, 7], $this->getVisible());
     }
 
@@ -111,7 +108,6 @@ class RuleDateGroupTest extends SetupTeardown
             ->setRuleType(
                 'xyz'
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([3, 5, 6, 7], $this->getVisible());
     }
 
@@ -131,7 +127,6 @@ class RuleDateGroupTest extends SetupTeardown
             ->setRuleType(
                 Rule::AUTOFILTER_RULETYPE_DATEGROUP
             );
-        $autoFilterRuleObject = new Rule($columnFilter);
         self::assertEquals([3, 6], $this->getVisible());
     }
 }