test fn.assertFunction.wrongNumberOfArguments: added assertion for messages

tests/fn.assertFunction.wrongNumberOfArguments.phpt

@@ -4,15 +4,23 @@ require __DIR__ . '/bootstrap.php';
 require __DIR__ . '/testClasses.php';
 use function Grifart\AssertFunction\{assertFunction, optional, parameters};
 use Tester\Assert;
-
+$position = 'assert-function-signature/tests/fn.assertFunction.wrongNumberOfArguments.phpt:9';
 
 $f1 = function(T1 $t1, T2 $t2): T3 {return new T3;};
 
 // Wrong number of arguments
-Assert::exception(function () use ($f1) {
-	assertFunction($f1, parameters(T1::class), T3::class);
-}, \AssertionError::class);
+Assert::exception(
+	function () use ($f1) {
+		assertFunction($f1, parameters(T1::class), T3::class);
+	},
+	\AssertionError::class,
+	"$position Given wrong number of parameters. Expected 1, 2 given."
+);
 
-Assert::exception(function () use ($f1) {
-	assertFunction($f1, parameters(T1::class, T2::class, T1::class), T3::class);
-}, \AssertionError::class);
+Assert::exception(
+	function () use ($f1) {
+		assertFunction($f1, parameters(T1::class, T2::class, T1::class), T3::class);
+	},
+	\AssertionError::class,
+	"$position Given wrong number of parameters. Expected 3, 2 given."
+);