code: def testPipelineCompile(self):
      # Invalid DSL path
      pipeline_path = os.path.join(
          self._testdata_dir, "non_existing.py"
      )
      result = self.runner.invoke(
          cli_group,
          [
              "pipeline",
              "compile",
              "--engine",
              "airflow",
              "--pipeline_path",
              pipeline_path,
          ],
      )
      self.assertIn("Compiling pipeline", result.output)
      self.assertIn(
          "Invalid pipeline path: {}".format(pipeline_path),
          result.output,
      )
  
      # Wrong Runner.
      pipeline_path = os.path.join(self.tmp_dir, "empty_file.py")
      io_utils.write_string_file(pipeline_path, "")
      result = self.runner.invoke(
          cli_group,
          [
              "pipeline",
              "compile",
              "--engine",
              "airflow",
              "--pipeline_path",
              pipeline_path,
          ],
      )
      self.assertIn("Compiling pipeline", result.output)
      self.assertIn("Cannot find AirflowDagRunner.run()", result.output)
  
      # Successful compilation.
      result = self.runner.invoke(
          cli_group,
          [
              "pipeline",
              "compile",
              "--engine",
              "airflow",
              "--pipeline_path",
              self._pipeline_path,
          ],
      )
      self.assertIn("Compiling pipeline", result.output)
      self.assertIn("Pipeline compiled successfully", result.output)
  
imports: import codecs
  import locale
  import os
  import subprocess
  import sys
  import time
  import absl
  from click import testing
  import tensorflow
  from tfx.dsl.io import fileio
  from tfx.orchestration.airflow import test_utils
  from tfx.tools.cli import labels
  from tfx.tools.cli import pip_utils
  from tfx.tools.cli.cli_main import cli_group
  from tfx.tools.cli.e2e import test_utils
  from tfx.utils import io_utils
  from tfx.utils import retry
  from tfx.utils import test_case_utils
label_desc: Use image node_id 11 for calling the CliAirflowEndToEndTest obj's underlying member method code with example usage: obj.testPipelineCompile() without return types