Prohlížeč zdrojového kódu

require "rails_helper"

RSpec.describe ScenarioRunner do
  let(:fixture_path) { Rails.root.join("spec/fixtures/examples") }

  describe ".run" do
    it "executes example code and returns success result" do
      result = ScenarioRunner.run(
        source_file: fixture_path.join("test_example/test_example.rb").to_s,
        entry_class: "TestExample",
        entry_method: "greet",
        inputs: { name: "Alice" }
      )

      expect(result).to be_success
      expect(result.output).to eq("Hello, Alice!")
      expect(result.duration).to be_a(Float)
    end

    it "returns error result for exceptions" do
      result = ScenarioRunner.run(
        source_file: fixture_path.join("test_example/test_example.rb").to_s,
        entry_class: "TestExample",
        entry_method: "nonexistent"
      )

      expect(result).not_to be_success
      expect(result.error).to include("NoMethodError")
    end

    it "times out long-running code" do
      stub_const("ScenarioRunner::TIMEOUT_SECONDS", 0.1)

      result = ScenarioRunner.run(
        source_file: fixture_path.join("slow_example/slow_example.rb").to_s,
        entry_class: "SlowExample",
        entry_method: "run"
      )

      expect(result).not_to be_success
      expect(result.error).to include("časový limit")
    end

    it "isolates code in anonymous module" do
      ScenarioRunner.run(
        source_file: fixture_path.join("test_example/test_example.rb").to_s,
        entry_class: "TestExample",
        entry_method: "greet",
        inputs: { name: "Bob" }
      )

      # The class should not leak into the top-level namespace
      expect(Object.const_defined?(:TestExample)).to be false
    end

    it "works without inputs" do
      result = ScenarioRunner.run(
        source_file: fixture_path.join("slow_example/slow_example.rb").to_s,
        entry_class: "SlowExample",
        entry_method: "run"
      )

      # Will timeout since no inputs needed but code sleeps
      # Just checking it doesn't blow up on empty inputs
      expect(result).to be_a(ScenarioRunner::Result)
    end
  end
end