code: def test_render_lines(self):
      instances = self.scenario.get_instances()
      assert self.scenario.render_lines(instances) == [
          "name: simple1",
          "description: A simple scenario",
          "tags: [simple]",
          "",
          "instance 0 (4 total) |train| {",
          '  input: "4 18 2 8 3"',
          '  reference [correct]: "8"',
          '  reference []: "-1"',
          "}",
          "instance 1 (4 total) |train| {",
          '  input: "14 15 12 6 3"',
          '  reference [correct]: "6"',
          '  reference []: "-1"',
          "}",
          "instance 2 (4 total) |test| {",
          '  input: "0 12 13 19 0"',
          '  reference [correct]: "19"',
          '  reference []: "-1"',
          "}",
          "instance 3 (4 total) |test| {",
          '  input: "8 7 18 3 10"',
          '  reference [correct]: "8"',
          '  reference []: "-1"',
          "}",
      ]
  
imports: from helm.benchmark.run_specs import get_scenario_spec_tiny
  from .scenario import create_scenario, Scenario, Input, PassageQuestionInput
label_desc: Use image node_id 2 for calling the TestScenario obj's underlying member method code with example usage: obj.test_render_lines() without return types