Fix TinyServer races.jk/tinyserver-race

1. Wait for the start callback rather than the do block, as it happens
   later. This prevents us from getting into many conditions where the
   start returns before the server is fully initialized, where if stop()
   is called too soon after start returns, it would cause exceptions.
2. Wait for the thread to finish completely
3. Use Thread.current.abort_on_exception` to show the actual listen errors,
   so that problems like this can be diagnosed.
4. Use :each to start and stop TinyServer so that race conditions like this
   are exposed earlier and more often (this will let us rid ourselves of them
   more quickly).
5. Use WEBrick::HTTPServer directly, which gets rid of the need for the
   complicated trap workaround (rack is the one that traps).

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/integration/client/client_spec.rb b/spec/integration/client/client_spec.rb
index 4d406ea495..da3a2b98e4 100644
--- a/spec/integration/client/client_spec.rb
+++ b/spec/integration/client/client_spec.rb
@@ -476,11 +476,11 @@ end
 
   # Fails on appveyor, but works locally on windows and on windows hosts in Ci.
   context "when using recipe-url", :skip_appveyor do
-    before(:all) do
+    before(:each) do
       start_tiny_server
     end
 
-    after(:all) do
+    after(:each) do
       stop_tiny_server
     end