Added LiteLLM to the stack

Development/litellm/tests/pass_through_tests/ruby_passthrough_tests/Gemfile

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+source 'https://rubygems.org'
+
+gem 'rspec'
+gem 'ruby-openai'

Development/litellm/tests/pass_through_tests/ruby_passthrough_tests/Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    base64 (0.2.0)
+    diff-lcs (1.6.0)
+    event_stream_parser (1.0.0)
+    faraday (2.8.1)
+      base64
+      faraday-net_http (>= 2.0, < 3.1)
+      ruby2_keywords (>= 0.0.4)
+    faraday-multipart (1.1.0)
+      multipart-post (~> 2.0)
+    faraday-net_http (3.0.2)
+    multipart-post (2.4.1)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.3)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.2)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
+    ruby-openai (7.4.0)
+      event_stream_parser (>= 0.3.0, < 2.0.0)
+      faraday (>= 1)
+      faraday-multipart (>= 1)
+    ruby2_keywords (0.0.5)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  rspec
+  ruby-openai
+
+BUNDLED WITH
+   2.6.5

Development/litellm/tests/pass_through_tests/ruby_passthrough_tests/spec/openai_assistants_passthrough_spec.rb

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+require 'openai'
+require 'rspec'
+
+RSpec.describe 'OpenAI Assistants Passthrough' do
+  let(:client) do
+    OpenAI::Client.new(
+      access_token: "sk-1234",
+      uri_base: "http://0.0.0.0:4000/openai"
+    )
+  end
+
+
+  it 'performs basic assistant operations' do
+    assistant = client.assistants.create(
+      parameters: {
+        name: "Math Tutor",
+        instructions: "You are a personal math tutor. Write and run code to answer math questions.",
+        tools: [{ type: "code_interpreter" }],
+        model: "gpt-4o"
+      }
+    )
+    expect(assistant).to include('id')
+    expect(assistant['name']).to eq("Math Tutor")
+
+    assistants_list = client.assistants.list
+    expect(assistants_list['data']).to be_an(Array)
+    expect(assistants_list['data']).to include(include('id' => assistant['id']))
+
+    retrieved_assistant = client.assistants.retrieve(id: assistant['id'])
+    expect(retrieved_assistant).to eq(assistant)
+
+    deleted_assistant = client.assistants.delete(id: assistant['id'])
+    expect(deleted_assistant['deleted']).to be true
+    expect(deleted_assistant['id']).to eq(assistant['id'])
+  end
+
+  it 'performs streaming assistant operations' do
+    puts "\n=== Starting Streaming Assistant Test ==="
+    
+    assistant = client.assistants.create(
+      parameters: {
+        name: "Math Tutor",
+        instructions: "You are a personal math tutor. Write and run code to answer math questions.",
+        tools: [{ type: "code_interpreter" }],
+        model: "gpt-4o"
+      }
+    )
+    puts "Created assistant: #{assistant['id']}"
+    expect(assistant).to include('id')
+
+    thread = client.threads.create
+    puts "Created thread: #{thread['id']}"
+    expect(thread).to include('id')
+
+    message = client.messages.create(
+      thread_id: thread['id'],
+      parameters: {
+        role: "user",
+        content: "I need to solve the equation `3x + 11 = 14`. Can you help me?"
+      }
+    )
+    puts "Created message: #{message['id']}"
+    puts "User question: #{message['content']}"
+    expect(message).to include('id')
+    expect(message['role']).to eq('user')
+
+    puts "\nStarting streaming response:"
+    puts "------------------------"
+    run = client.runs.create(
+      thread_id: thread['id'],
+      parameters: {
+        assistant_id: assistant['id'],
+        max_prompt_tokens: 256,
+        max_completion_tokens: 16,
+        stream: proc do |chunk, _bytesize|
+          puts "Received chunk: #{chunk.inspect}"  # Debug: Print raw chunk
+          if chunk["object"] == "thread.message.delta"
+            content = chunk.dig("delta", "content")
+            puts "Content: #{content.inspect}"  # Debug: Print content structure
+            if content && content[0] && content[0]["text"]
+              print content[0]["text"]["value"]
+              $stdout.flush  # Ensure output is printed immediately
+            end
+          end
+        end
+      }
+    )
+    puts "\n------------------------"
+    puts "Run completed: #{run['id']}"
+    expect(run).not_to be_nil
+  ensure
+    client.assistants.delete(id: assistant['id']) if assistant && assistant['id']
+    client.threads.delete(id: thread['id']) if thread && thread['id']
+  end
+end