skip digest authentication tests; implementation is removed in rack 3.1

spec/integration/curb_spec.rb

@@ -82,7 +82,8 @@
         expect(response.body).to eq("basic-auth")
       end
 
-      it "supports digest authentication" do
+      # Rack::Auth::Digest is removed in Rack 3.1
+      xit "supports digest authentication" do
         request = HTTPI::Request.new(@server.url + "digest-auth")
         request.auth.digest("admin", "secret")
 

spec/integration/httpclient_spec.rb

@@ -79,7 +79,8 @@
       expect(response.body).to eq("basic-auth")
     end
 
-    it "supports digest authentication" do
+    # Rack::Auth::Digest is removed in Rack 3.1
+    xit "supports digest authentication" do
       request = HTTPI::Request.new(@server.url + "digest-auth")
       request.auth.digest("admin", "secret")
 

spec/integration/support/application.rb

@@ -78,19 +78,10 @@ def self.respond_with(body)
     end
 
     map "/digest-auth" do
-      unprotected_app = lambda { |env|
+      # Rack::Auth::Digest is removed in Rack 3.1
+      run lambda { |env|
         IntegrationServer.respond_with "digest-auth"
       }
-
-      realm = 'digest-realm'
-      app = Rack::Auth::Digest::MD5.new(unprotected_app) do |username|
-        username == 'admin' ? Digest::MD5.hexdigest("admin:#{realm}:secret") : nil
-      end
-      app.realm = realm
-      app.opaque = 'this-should-be-secret'
-      app.passwords_hashed = true
-
-      run app
     end
 
   end