Add test cases where a function with the second argument omitted is accepted

Author: zonuexe

tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php

@@ -903,11 +903,11 @@ public function testArrayFindCallback(): void
 			],
 			[
 				'Parameter #2 $callback of function array_find expects callable(mixed, int|string): bool, Closure(string, array): false given.',
-				49,
+				52,
 			],
 			[
 				'Parameter #2 $callback of function array_find expects callable(mixed, int|string): bool, Closure(string, int): array{} given.',
-				52,
+				55,
 			],
 		]);
 	}
@@ -929,11 +929,11 @@ public function testArrayFindKeyCallback(): void
 			],
 			[
 				'Parameter #2 $callback of function array_find_key expects callable(mixed, int|string): bool, Closure(string, array): false given.',
-				49,
+				52,
 			],
 			[
 				'Parameter #2 $callback of function array_find_key expects callable(mixed, int|string): bool, Closure(string, int): array{} given.',
-				52,
+				55,
 			],
 		]);
 	}

tests/PHPStan/Rules/Functions/data/array_find.php

@@ -45,6 +45,9 @@ function(int $value, string $key) {
 	// ok
 	array_find($array, fn (string $value, int $key) => $key === 0);
 
+	// ok
+	array_find($array, fn (string $value) => $key === 0);
+
 	// bad parameters
 	array_find($array, fn (string $item, array $key) => $key === 0);
 

tests/PHPStan/Rules/Functions/data/array_find_key.php

@@ -45,6 +45,9 @@ function(int $value, string $key) {
 	// ok
 	array_find_key($array, fn (string $value, int $key) => $key === 0);
 
+	// ok
+	array_find_key($array, fn (string $value) => $value === 'foo');
+
 	// bad parameters
 	array_find_key($array, fn (string $item, array $key) => $key === 0);