old_contents: import requests
  from indra.sources.omnipath import OmniPathModificationProcessor,\
      OmniPathLiganReceptorProcessor
  from indra.sources.omnipath.api import op_url
  from indra.statements import Agent, Phosphorylation, Complex
  from indra.preassembler.grounding_mapper import GroundingMapper
  
  BRAF_UPID = 'P15056'
  JAK2_UPID = 'O60674'
  BRAF_AG = Agent(None, db_refs={'UP': BRAF_UPID})
  GroundingMapper.standardize_agent_name(BRAF_AG)
  JAK2_AG = Agent(None, db_refs={'UP': JAK2_UPID})
  GroundingMapper.standardize_agent_name(JAK2_AG)
  
  
  def test_omnipath_web_api():
      query_url = '%s/queries'
      res = requests.get(query_url)
      assert res.status_code == 200
  
  
  def test_mods_from_web():
      params = {'format': 'json', 'substrates': JAK2_UPID,
                'fields': ['sources', 'references']}
      ptm_url = '%s/ptms' % op_url
      res = requests.get(ptm_url, params=params)
      assert res.status_code == 200
      assert res.text
      ptm_json = res.json()
      assert ptm_json[0]['substrate'] == JAK2_UPID, ptm_json[0]['substrate']
      stmts = OmniPathModificationProcessor(ptm_json).statements
      assert JAK2_AG.name in [a.name for a in stmts[0].agent_list()],\
          stmts[0].agent_list()
      assert 'omnipath' == stmts[0].evidence[0].source_api,\
          stmts[0].evidence[0].source_api
  
  
  def test_pypath_import():
      try:
          import pypath
      except ImportError:
          pypath = None
      assert pypath, 'PyPath is not avaialble'
  
  
  def test_lr_pypath_network():
      from pypath import main as pypath_main, data_formats
      pa = pypath_main.PyPath()
      pa.init_network({
          'cellphonedb': data_formats.ligand_receptor['cellphonedb']
      })
      stmts = OmniPathLiganReceptorProcessor(pa).statements
      assert isinstance(stmts[0], Complex)
      assert 'omnipath' == stmts[0].evidence[0].source_api, \
          stmts[0].evidence[0].source_api
  
new_contents: import requests
  from indra.sources.omnipath import OmniPathModificationProcessor,\
      OmniPathLiganReceptorProcessor
  from indra.sources.omnipath.api import op_url
  from indra.statements import Agent, Phosphorylation, Complex
  from indra.preassembler.grounding_mapper import GroundingMapper
  
  BRAF_UPID = 'P15056'
  JAK2_UPID = 'O60674'
  BRAF_AG = Agent(None, db_refs={'UP': BRAF_UPID})
  GroundingMapper.standardize_agent_name(BRAF_AG)
  JAK2_AG = Agent(None, db_refs={'UP': JAK2_UPID})
  GroundingMapper.standardize_agent_name(JAK2_AG)
  
  
  def test_omnipath_web_api():
      query_url = '%s/queries'
      res = requests.get(query_url)
      assert res.status_code == 200
  
  
  def test_mods_from_web():
      params = {'format': 'json', 'substrates': JAK2_UPID,
                'fields': ['sources', 'references']}
      ptm_url = '%s/ptms' % op_url
      res = requests.get(ptm_url, params=params)
      assert res.status_code == 200
      assert res.text
      ptm_json = res.json()
      assert ptm_json[0]['substrate'] == JAK2_UPID, ptm_json[0]['substrate']
      stmts = OmniPathModificationProcessor(ptm_json).statements
      assert JAK2_AG.name in [a.name for a in stmts[0].agent_list()],\
          stmts[0].agent_list()
      assert 'omnipath' == stmts[0].evidence[0].source_api,\
          stmts[0].evidence[0].source_api
  
  
  def test_pypath_import():
      try:
          import pypath
      except ImportError:
          pypath = None
      assert pypath, 'PyPath is not avaialble'
  
  
  def test_lr_pypath_network():
      from pypath import main as pypath_main, data_formats
      pa = pypath_main.PyPath()
      pa.init_network({
          'cellphonedb': data_formats.ligand_receptor['cellphonedb']
      })
      stmts = OmniPathLiganReceptorProcessor(pa).statements
      stmt = stmts[0]
      assert isinstance(stmt, Complex)
      ev = stmt.evidence[0]
      assert 'omnipath' == ev.source_api, ev.source_api
      assert ev.pmid or ev.text_refs, 'pmid=%s, ev.text_refs=%s' % \
                                      (ev.pmid, ev.text_refs)
      assert 'source_sub_id' in ev.annotations, print(ev.annotations.keys())
      assert 'cellphonedb' == ev.annotations['source_sub_id'].lower(), \
          ev.annotations['source_sub_id']
  
subject: Add more tests for ligand-receptor