use strict; use warnings; use Test::More; my $want = 0; my $got = 0; cmp_ok($got, 'eq', $want, "Passes on correct comparison"); my ($res, @ok, @diag, @warn); { no warnings 'redefine'; local *Test::Builder::ok = sub { my ($tb, $ok, $name) = @_; push @ok => $ok; return $ok; }; local *Test::Builder::diag = sub { my ($tb, @d) = @_; push @diag => @d; }; local $SIG{__WARN__} = sub { push @warn => @_; }; $res = cmp_ok($got, '#eq', $want, "You shall not pass!"); } ok(!$res, "Did not pass"); is(@ok, 1, "1 result"); ok(!$ok[0], "result is false"); # We only care that it mentions a syntax error. like(join("\n" => @diag), qr/syntax error at \(eval in cmp_ok\)/, "Syntax error"); # We are not going to inspect the warning because it is not super predictable, # and changes with eval specifics. ok(@warn, "We got warnings"); done_testing;