381 lines
13 KiB
Ruby
381 lines
13 KiB
Ruby
# frozen_string_literal: true
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require_relative "endpoint_compliance"
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class GeminiMock < EndpointMock
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def response(content, tool_call: false)
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{
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candidates: [
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{
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content: {
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parts: [(tool_call ? content : { text: content })],
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role: "model",
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},
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finishReason: "STOP",
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index: 0,
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safetyRatings: [
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{ category: "HARM_CATEGORY_SEXUALLY_EXPLICIT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HATE_SPEECH", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HARASSMENT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_DANGEROUS_CONTENT", probability: "NEGLIGIBLE" },
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],
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},
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],
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promptFeedback: {
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safetyRatings: [
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{ category: "HARM_CATEGORY_SEXUALLY_EXPLICIT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HATE_SPEECH", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HARASSMENT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_DANGEROUS_CONTENT", probability: "NEGLIGIBLE" },
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],
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},
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}
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end
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def stub_response(prompt, response_text, tool_call: false)
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WebMock
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.stub_request(
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:post,
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"https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:generateContent?key=#{SiteSetting.ai_gemini_api_key}",
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)
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.with(body: request_body(prompt, tool_call))
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.to_return(status: 200, body: JSON.dump(response(response_text, tool_call: tool_call)))
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end
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def stream_line(delta, finish_reason: nil, tool_call: false)
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{
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candidates: [
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{
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content: {
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parts: [(tool_call ? delta : { text: delta })],
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role: "model",
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},
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finishReason: finish_reason,
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index: 0,
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safetyRatings: [
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{ category: "HARM_CATEGORY_SEXUALLY_EXPLICIT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HATE_SPEECH", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HARASSMENT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_DANGEROUS_CONTENT", probability: "NEGLIGIBLE" },
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],
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},
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],
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}.to_json
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end
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def stub_streamed_response(prompt, deltas, tool_call: false)
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chunks =
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deltas.each_with_index.map do |_, index|
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if index == (deltas.length - 1)
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stream_line(deltas[index], finish_reason: "STOP", tool_call: tool_call)
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else
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stream_line(deltas[index], tool_call: tool_call)
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end
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end
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chunks = chunks.join("\n,\n").prepend("[\n").concat("\n]").split("")
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WebMock
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.stub_request(
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:post,
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"https://generativelanguage.googleapis.com/v1beta/models/gemini-pro:streamGenerateContent?key=#{SiteSetting.ai_gemini_api_key}",
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)
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.with(body: request_body(prompt, tool_call))
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.to_return(status: 200, body: chunks)
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end
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def tool_payload
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{
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name: "get_weather",
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description: "Get the weather in a city",
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parameters: {
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type: "object",
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required: %w[location unit],
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properties: {
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"location" => {
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type: "string",
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description: "the city name",
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},
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"unit" => {
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type: "string",
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description: "the unit of measurement celcius c or fahrenheit f",
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enum: %w[c f],
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},
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},
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},
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}
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end
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def request_body(prompt, tool_call)
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model
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.default_options
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.merge(contents: prompt)
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.tap { |b| b[:tools] = [{ function_declarations: [tool_payload] }] if tool_call }
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.to_json
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end
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def tool_deltas
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[
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{ "functionCall" => { name: "get_weather", args: {} } },
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{ "functionCall" => { name: "get_weather", args: { location: "" } } },
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{ "functionCall" => { name: "get_weather", args: { location: "Sydney", unit: "c" } } },
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]
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end
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def tool_response
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{ "functionCall" => { name: "get_weather", args: { location: "Sydney", unit: "c" } } }
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end
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end
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RSpec.describe DiscourseAi::Completions::Endpoints::Gemini do
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subject(:endpoint) { described_class.new(model) }
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fab!(:model) { Fabricate(:gemini_model, vision_enabled: true) }
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fab!(:user)
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let(:image100x100) { plugin_file_from_fixtures("100x100.jpg") }
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let(:upload100x100) do
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UploadCreator.new(image100x100, "image.jpg").create_for(Discourse.system_user.id)
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end
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let(:gemini_mock) { GeminiMock.new(endpoint) }
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let(:compliance) do
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EndpointsCompliance.new(self, endpoint, DiscourseAi::Completions::Dialects::Gemini, user)
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end
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let(:echo_tool) do
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{
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name: "echo",
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description: "echo something",
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parameters: [{ name: "text", type: "string", description: "text to echo", required: true }],
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}
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end
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# by default gemini is meant to use AUTO mode, however new experimental models
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# appear to require this to be explicitly set
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it "Explicitly specifies tool config" do
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prompt = DiscourseAi::Completions::Prompt.new("Hello", tools: [echo_tool])
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response = gemini_mock.response("World").to_json
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req_body = nil
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llm = DiscourseAi::Completions::Llm.proxy("custom:#{model.id}")
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url = "#{model.url}:generateContent?key=123"
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stub_request(:post, url).with(
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body:
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proc do |_req_body|
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req_body = _req_body
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true
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end,
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).to_return(status: 200, body: response)
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response = llm.generate(prompt, user: user)
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expect(response).to eq("World")
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parsed = JSON.parse(req_body, symbolize_names: true)
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expect(parsed[:tool_config]).to eq({ function_calling_config: { mode: "AUTO" } })
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end
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it "properly encodes tool calls" do
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prompt = DiscourseAi::Completions::Prompt.new("Hello", tools: [echo_tool])
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llm = DiscourseAi::Completions::Llm.proxy("custom:#{model.id}")
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url = "#{model.url}:generateContent?key=123"
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response_json = { "functionCall" => { name: "echo", args: { text: "<S>ydney" } } }
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response = gemini_mock.response(response_json, tool_call: true).to_json
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stub_request(:post, url).to_return(status: 200, body: response)
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response = llm.generate(prompt, user: user)
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tool =
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DiscourseAi::Completions::ToolCall.new(
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id: "tool_0",
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name: "echo",
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parameters: {
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text: "<S>ydney",
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},
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)
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expect(response).to eq(tool)
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end
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it "Supports Vision API" do
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prompt =
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DiscourseAi::Completions::Prompt.new(
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"You are image bot",
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messages: [type: :user, id: "user1", content: "hello", upload_ids: [upload100x100.id]],
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)
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encoded = prompt.encoded_uploads(prompt.messages.last)
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response = gemini_mock.response("World").to_json
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req_body = nil
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llm = DiscourseAi::Completions::Llm.proxy("custom:#{model.id}")
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url = "#{model.url}:generateContent?key=123"
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stub_request(:post, url).with(
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body:
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proc do |_req_body|
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req_body = _req_body
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true
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end,
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).to_return(status: 200, body: response)
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response = llm.generate(prompt, user: user)
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expect(response).to eq("World")
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expected_prompt = {
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"generationConfig" => {
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},
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"safetySettings" => [
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{ "category" => "HARM_CATEGORY_HARASSMENT", "threshold" => "BLOCK_NONE" },
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{ "category" => "HARM_CATEGORY_SEXUALLY_EXPLICIT", "threshold" => "BLOCK_NONE" },
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{ "category" => "HARM_CATEGORY_HATE_SPEECH", "threshold" => "BLOCK_NONE" },
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{ "category" => "HARM_CATEGORY_DANGEROUS_CONTENT", "threshold" => "BLOCK_NONE" },
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],
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"contents" => [
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{
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"role" => "user",
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"parts" => [
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{ "text" => "hello" },
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{ "inlineData" => { "mimeType" => "image/jpeg", "data" => encoded[0][:base64] } },
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],
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},
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],
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"systemInstruction" => {
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"role" => "system",
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"parts" => [{ "text" => "You are image bot" }],
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},
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}
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expect(JSON.parse(req_body)).to eq(expected_prompt)
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end
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it "Can stream tool calls correctly" do
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rows = [
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{
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candidates: [
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{
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content: {
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parts: [{ functionCall: { name: "echo", args: { text: "sam<>wh!s" } } }],
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role: "model",
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},
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safetyRatings: [
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{ category: "HARM_CATEGORY_HATE_SPEECH", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_DANGEROUS_CONTENT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_HARASSMENT", probability: "NEGLIGIBLE" },
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{ category: "HARM_CATEGORY_SEXUALLY_EXPLICIT", probability: "NEGLIGIBLE" },
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],
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},
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],
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usageMetadata: {
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promptTokenCount: 625,
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totalTokenCount: 625,
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},
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modelVersion: "gemini-1.5-pro-002",
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},
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{
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candidates: [{ content: { parts: [{ text: "" }], role: "model" }, finishReason: "STOP" }],
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usageMetadata: {
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promptTokenCount: 625,
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candidatesTokenCount: 4,
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totalTokenCount: 629,
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},
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modelVersion: "gemini-1.5-pro-002",
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},
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]
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payload = rows.map { |r| "data: #{r.to_json}\n\n" }.join
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llm = DiscourseAi::Completions::Llm.proxy("custom:#{model.id}")
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url = "#{model.url}:streamGenerateContent?alt=sse&key=123"
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prompt = DiscourseAi::Completions::Prompt.new("Hello", tools: [echo_tool])
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output = []
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stub_request(:post, url).to_return(status: 200, body: payload)
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llm.generate(prompt, user: user) { |partial| output << partial }
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tool_call =
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DiscourseAi::Completions::ToolCall.new(
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id: "tool_0",
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name: "echo",
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parameters: {
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text: "sam<>wh!s",
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},
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)
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expect(output).to eq([tool_call])
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log = AiApiAuditLog.order(:id).last
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expect(log.request_tokens).to eq(625)
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expect(log.response_tokens).to eq(4)
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end
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it "Can correctly handle malformed responses" do
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response = <<~TEXT
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data: {"candidates": [{"content": {"parts": [{"text": "Certainly"}],"role": "model"}}],"usageMetadata": {"promptTokenCount": 399,"totalTokenCount": 399},"modelVersion": "gemini-1.5-pro-002"}
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data: {"candidates": [{"content": {"parts": [{"text": "! I'll create a simple \\"Hello, World!\\" page where each letter"}],"role": "model"},"safetyRatings": [{"category": "HARM_CATEGORY_HATE_SPEECH","probability": "NEGLIGIBLE"},{"category": "HARM_CATEGORY_DANGEROUS_CONTENT","probability": "NEGLIGIBLE"},{"category": "HARM_CATEGORY_HARASSMENT","probability": "NEGLIGIBLE"},{"category": "HARM_CATEGORY_SEXUALLY_EXPLICIT","probability": "NEGLIGIBLE"}]}],"usageMetadata": {"promptTokenCount": 399,"totalTokenCount": 399},"modelVersion": "gemini-1.5-pro-002"}
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data: {"candidates": [{"content": {"parts": [{"text": " has a different color using inline styles for simplicity. Each letter will be wrapped"}],"role": "model"},"safetyRatings": [{"category": "HARM_CATEGORY_HATE_SPEECH","probability": "NEGLIGIBLE"},{"category": "HARM_CATEGORY_DANGEROUS_CONTENT","probability": "NEGLIGIBLE"},{"category": "HARM_CATEGORY_HARASSMENT","probability": "NEGLIGIBLE"},{"category": "HARM_CATEGORY_SEXUALLY_EXPLICIT","probability": "NEGLIGIBLE"}]}],"usageMetadata": {"promptTokenCount": 399,"totalTokenCount": 399},"modelVersion": "gemini-1.5-pro-002"}
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data: {"candidates": [{"content": {"parts": [{"text": ""}],"role": "model"},"finishReason": "STOP"}],"usageMetadata": {"promptTokenCount": 399,"candidatesTokenCount": 191,"totalTokenCount": 590},"modelVersion": "gemini-1.5-pro-002"}
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data: {"candidates": [{"finishReason": "MALFORMED_FUNCTION_CALL"}],"usageMetadata": {"promptTokenCount": 399,"candidatesTokenCount": 191,"totalTokenCount": 590},"modelVersion": "gemini-1.5-pro-002"}
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TEXT
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llm = DiscourseAi::Completions::Llm.proxy("custom:#{model.id}")
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url = "#{model.url}:streamGenerateContent?alt=sse&key=123"
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output = []
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stub_request(:post, url).to_return(status: 200, body: response)
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llm.generate("Hello", user: user) { |partial| output << partial }
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expect(output).to eq(
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[
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"Certainly",
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"! I'll create a simple \"Hello, World!\" page where each letter",
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" has a different color using inline styles for simplicity. Each letter will be wrapped",
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],
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)
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end
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it "Can correctly handle streamed responses even if they are chunked badly" do
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data = +""
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data << "da|ta: |"
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data << gemini_mock.response("Hello").to_json
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data << "\r\n\r\ndata: "
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data << gemini_mock.response(" |World").to_json
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data << "\r\n\r\ndata: "
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data << gemini_mock.response(" Sam").to_json
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split = data.split("|")
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llm = DiscourseAi::Completions::Llm.proxy("custom:#{model.id}")
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url = "#{model.url}:streamGenerateContent?alt=sse&key=123"
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output = []
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gemini_mock.with_chunk_array_support do
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stub_request(:post, url).to_return(status: 200, body: split)
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llm.generate("Hello", user: user) { |partial| output << partial }
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end
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expect(output.join).to eq("Hello World Sam")
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end
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end
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