test: Fix Sinatra Tests

Sinatra 4.1 now includes a stricter host authorization check by default, which caused our tests to fail.

The host authorization is not enforced in development and test mode so this PR sets the Sinatra environment to run in `test` mode.

See: sinatra/sinatra#2053

fixes #1252

Author: arielvalentin

instrumentation/sinatra/test/opentelemetry/instrumentation/sinatra_test.rb

@@ -17,6 +17,7 @@ class CustomError < StandardError; end
 
   let(:app_one) do
     Class.new(Sinatra::Application) do
+      set :raise_errors, false
       get '/endpoint' do
         '1'
       end
@@ -41,6 +42,7 @@ class CustomError < StandardError; end
 
   let(:app_two) do
     Class.new(Sinatra::Application) do
+      set :raise_errors, false
       get '/endpoint' do
         '2'
       end
@@ -165,7 +167,8 @@ class CustomError < StandardError; end
         'http.method' => 'GET',
         'http.route' => '/error',
         'http.scheme' => 'http',
-        'http.target' => '/error'
+        'http.target' => '/error',
+        'http.status_code' => 500
       )
       _(exporter.finished_spans.flat_map(&:events).map(&:name)).must_equal(['exception'])
     end

instrumentation/sinatra/test/test_helper.rb

@@ -3,6 +3,7 @@
 # Copyright The OpenTelemetry Authors
 #
 # SPDX-License-Identifier: Apache-2.0
+ENV['APP_ENV'] = 'test'
 
 require 'bundler/setup'
 Bundler.require(:default, :development, :test)