@@ -22,7 +22,7 @@ public function testTupleArity(array $values, int $arity): void
2222 self ::assertEquals ($ arity , Tuple::of (...$ values )->arity ());
2323 }
2424
25- public function arityTestData (): array
25+ public static function arityTestData (): array
2626 {
2727 return [
2828 [['a ' , 'b ' , 'c ' , 'd ' , 'e ' , 'f ' , 'g ' , 'h ' ], 8 ],
@@ -69,7 +69,7 @@ public function testTupleToArray(array $values): void
6969 self ::assertEquals ($ values , Tuple::of (...$ values )->toArray ());
7070 }
7171
72- public function toArrayTestData (): array
72+ public static function toArrayTestData (): array
7373 {
7474 return [
7575 [['a ' , 'b ' , 'c ' , 'd ' , 'e ' , 'f ' , 'g ' , 'h ' ]],
@@ -97,7 +97,7 @@ public function testTupleConcat(array $firstValues, array $secondValues, string
9797 self ::assertEquals ($ result , $ newTuple ->toArray ());
9898 }
9999
100- public function concatTestData (): array
100+ public static function concatTestData (): array
101101 {
102102 return TupleConcatTestHelper::concatTestData ();
103103 }
@@ -119,7 +119,7 @@ public function testTupleAppend(array $expected, array $values, string $appendVa
119119 self ::assertEquals ($ expected , Tuple::of (...$ values )->append ($ appendValue )->toArray ());
120120 }
121121
122- public function appendTestData (): array
122+ public static function appendTestData (): array
123123 {
124124 return [
125125 [['a ' , 'b ' , 'c ' , 'd ' , 'e ' , 'f ' , 'g ' , 'h ' ], ['a ' , 'b ' , 'c ' , 'd ' , 'e ' , 'f ' , 'g ' ], 'h ' ],
@@ -141,7 +141,7 @@ public function testTuplePrepend(array $expected, array $values, string $appendV
141141 self ::assertEquals ($ expected , Tuple::of (...$ values )->prepend ($ appendValue )->toArray ());
142142 }
143143
144- public function prependTestData (): array
144+ public static function prependTestData (): array
145145 {
146146 return [
147147 [['h ' , 'a ' , 'b ' , 'c ' , 'd ' , 'e ' , 'f ' , 'g ' ], ['a ' , 'b ' , 'c ' , 'd ' , 'e ' , 'f ' , 'g ' ], 'h ' ],
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