text: import os
  import subprocess
  import unittest
  
  import pandas as pd
  import numpy as np
  
  import tempfile
  
  from .mixins import FileMixins
  from . import config
  
  
  class TestTargeted(FileMixins, unittest.TestCase):
      def setUp(self):
          super(TestTargeted, self).setUp()
          self.output = os.path.join(self.out_dir, "targeted")
  
      def test_pyquant_trypsin(self):
          # This searches for the y1 ions of arginine. It also is a check that the label-scheme parameter works.
          f = tempfile.NamedTemporaryFile("w")
          f.write("\t".join(["0", "R", "10.008269", "R10"]) + "\n")
          f.write("\t".join(["1", "R", "0", "Light"]) + "\n")
          f.seek(0)
          com = [
              self.executable,
              "--scan-file",
              self.ecoli_mzml,
              "-p",
              str(config.CORES),
              "-o",
              self.output,
              "--msn-ion",
              "175",
              "--html",
              "--label-scheme",
              f.name,
          ]
          subprocess.call(com)
          pyquant = pd.read_table(self.output)
          label = "R10"
          pq_sel = "{}/Light".format(label)
          pyquant[pq_sel] = np.log2(pyquant[pq_sel] + 0.000001)
          r10_med = pyquant[pq_sel].median()
          self.assertNotAlmostEqual(r10_med, -2.0, places=2)
  
  
  if __name__ == "__main__":
      unittest.main()
  