forgot to add this file

t/Plack-Middleware/lint.t

@@ -0,0 +1,24 @@
+use strict;
+use Plack::Test;
+use Test::More;
+use HTTP::Request::Common;
+
+use Plack::Middleware::Lint;
+
+my @bad = map { Plack::Middleware::Lint->wrap($_) } (
+    sub { return {} },
+    sub { return [ 200, [], [], [] ] },
+    sub { return [ 200, {}, [] ] },
+    sub { return [ 0, [], "Hello World" ] },
+    sub { return [ 200, [], [ "\x{ffff}" ] ] },
+);
+
+for my $app (@bad) {
+    test_psgi $app, sub {
+        my $cb = shift;
+        my $res = $cb->(GET "/");
+        is $res->code, 500, $res->content;
+    };
+}
+
+done_testing;