Fix spec

sentry-ruby/spec/isolated/puma_spec.rb

@@ -1,6 +1,9 @@
 require "puma"
 require_relative "../spec_helper"
 
+# Because puma doesn't have any dependency, if Rack is not installed the entire test won't work
+return if ENV["RACK_VERSION"] == "0"
+
 RSpec.describe Puma::Server do
   class TestServer
     def initialize(app, options)
@@ -47,7 +50,7 @@ def server_run(app, lowlevel_error_handler: nil, &block)
     events = sentry_events
     expect(events.count).to eq(1)
     event = events.first
-    expect(event.exception.values.first.value).to eq("foo (RuntimeError)")
+    expect(event.exception.values.first.value).to match("foo")
   end
 
   context "when user defines lowlevel_error_handler" do
@@ -69,7 +72,7 @@ def server_run(app, lowlevel_error_handler: nil, &block)
       events = sentry_events
       expect(events.count).to eq(1)
       event = events.first
-      expect(event.exception.values.first.value).to eq("foo (RuntimeError)")
+      expect(event.exception.values.first.value).to match("foo")
     end
   end