--- /dev/null
+#!perl
+
+use strict;
+use warnings FATAL => 'all';
+
+use Test::More;
+
+use Function::Parameters qw(:strict);
+
+fun no_sig { return @_ }
+fun no_args() { return @_ }
+fun one_arg($foo) { return $foo }
+fun two_args($foo, $bar) { return ($foo, $bar) }
+fun array_at_end($foo, @stuff) { return ($foo, @stuff) }
+fun one_named(:$foo) { return $foo; }
+fun one_named_one_positional($bar, :$foo) { return($foo, $bar) }
+
+note "too many arguments"; {
+ is_deeply [no_sig(42)], [42];
+
+ ok !eval { no_args(42); 1 }, "no args";
+ like $@, qr{Too many arguments};
+
+ ok !eval { one_arg(23, 42); 1 }, "one arg";
+ like $@, qr{Too many arguments};
+
+ ok !eval { two_args(23, 42, 99); 1 }, "two args";
+ like $@, qr{Too many arguments};
+
+ is_deeply [array_at_end(23, 42, 99)], [23, 42, 99], "array at end";
+}
+
+
+note "with positionals"; {
+ is one_named(foo => 42), 42;
+ is one_named(foo => 23, foo => 42), 42;
+
+
+ is_deeply [one_named_one_positional(23, foo => 42)], [42, 23];
+ is_deeply [one_named_one_positional(23, foo => 42, foo => 23)], [23, 23];
+}
+
+
+done_testing;