Support Rack 3 and fix tests on Rack 3

Most changes are to the tests to avoid uppercase characters in header
keys, which are no longer allowed in rack 3 (to allow for O(1) access).

This also changes a few places where an array of headers was used to
switch to a hash, as a hash is requierd in Rack 3.

Newer versions of curl use a 000 http_code for invalid http codes,
so switch from "42 -eq" to "500 -ne" in the test, as Rack::Lint will
always raise a 500 error.

There is one test that fails on OpenBSD when opening a fifo.  This is
unrelated to unicorn as far as I can see, so skip the remaining part
of the test in that case on OpenBSD.

Tests still pass on Rack 2, and presumably Rack 1 as well, though
I didn't test Rack 1.

Co-authored-by: Eric Wong <bofh@yhbt.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/test/unit/test_ccc.rb b/test/unit/test_ccc.rb
index 0dc72e8..f518230 100644
--- a/test/unit/test_ccc.rb
+++ b/test/unit/test_ccc.rb
@@ -29,7 +29,7 @@ class TestCccTCPI < Test::Unit::TestCase
         # will wake up when writer closes
         sleep_pipe[0].read if env['PATH_INFO'] == '/sleep'
 
-        [ 200, [ %w(Content-Length 0),  %w(Content-Type text/plain) ], [] ]
+        [ 200, {'content-length'=>'0', 'content-type'=>'text/plain'}, [] ]
       end
       ENV['UNICORN_FD'] = srv.fileno.to_s
       opts = {