text: import pytest
  from lute.graph import Graph
  from lute.node import Variable
  from lute.node.fn import node_fn
  from lute.node.search.constraint import ConstraintSearch
  from lute.node.search.generic import Canonicalize, ExpansionSearch, ListSearch
  
  
  def test_expansion():
      exp = {
          "hello": ["hola", "hello", "hey"],
          "world": ["planet earth", "world", "universe"]
      }
  
      x = Variable()
      e = ExpansionSearch(["hello", "world"], exp)(x)
      g = Graph(x, e)
  
      assert g.run("Hello world") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 5)
      }, {
          "type": "expansion",
          "value": "world",
          "range": (6, 11)
      }]
      assert g.run("hola planet earth") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 4)
      }, {
          "type": "expansion",
          "value": "world",
          "range": (5, 17)
      }]
      assert g.run("hola planet mars") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 4)
      }]
      assert g.run("lol planet mars") == []
  
  
  def test_expansion_hi():
      exp = {
          "account": ["सैलरी अकाउंट", "सेविंग्स अकाउंट"],
          "card": ["कार्ड", "कॉर्ड"],
          "lost": ["खो", "गुम", "गायब", "लुप्त"]
      }
  
      x = Variable()
      g = Graph(x, x >> ExpansionSearch(["account", "card", "lost"], exp, lang="hi"))
  
      assert g.run("कार्ड खो गया है") == [{
          "type": "expansion",
          "value": "card",
          "range": (0, 5)
      }, {
          "type": "expansion",
          "value": "lost",
          "range": (6, 8)
      }]
      assert g.run("सैलरी अकाउंट चाहिए") == [{
          "type": "expansion",
          "value": "account",
          "range": (0, 12)
      }]
  
  
  def test_expansion_regex():
      exp = {
          "hello": ["hola", "hell?o", "hey!?( there)?"],
          "world": ["planet( earth| venus| kek)+", "world", "universe"]
      }
  
      x = Variable()
      e = ExpansionSearch(["hello", "world"], exp)(x)
      g = Graph(x, e)
  
      assert g.run("Helo world") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 4)
      }, {
          "type": "expansion",
          "value": "world",
          "range": (5, 10)
      }]
      assert g.run("hey there, thank you!") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 9)
      }]
      assert g.run("hola planet") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 4)
      }]
      assert g.run("hola planet mars") == [{
          "type": "expansion",
          "value": "hello",
          "range": (0, 4)
      }]
      assert g.run("lol planet kek") == [{
          "type": "expansion",
          "value": "world",
          "range": (4, 14)
      }]
  
  
  def test_expansion_regex_hi():
      exp = {
          "account": ["(सैलरी |सेविंग्स )?अकाउंट"],
          "card": ["कार्ड", "कॉर्ड"],
          "lost": ["खो(या|ये|ए)?", "गु(म|मा)", "गायब", "लुप्त"]
      }
  
      x = Variable()
      g = Graph(x, x >> ExpansionSearch(["account", "card", "lost"], exp, lang="hi"))
  
      assert g.run("कार्ड खोया था") == [{
          "type": "expansion",
          "value": "card",
          "range": (0, 5)
      }, {
          "type": "expansion",
          "value": "lost",
          "range": (6, 10)
      }]
      assert g.run("सैलरी अकाउंट चाहिए") == [{
          "type": "expansion",
          "value": "account",
          "range": (0, 12)
      }]
      assert g.run("अकाउंट चाहिए") == [{
          "type": "expansion",
          "value": "account",
          "range": (0, 6)
      }]
  
  
  def test_canonicalization():
      exp = {
          "hello": ["hola", "hello", "hey"],
          "world": ["earth", "planet earth", "world", "universe"]
      }
  
      terms = ["hello", "world"]
  
      x = Variable()
      c = Canonicalize()(x, x >> ExpansionSearch(terms, exp))
      g = Graph(x, c)
  
      assert g.run("hola universe") == "hello world"
      assert g.run("hey planet earth") == "hello world"
  
  
  def test_canonicalization_dup():
      exp = {
          "hello": ["hola", "hello", "hey"],
          "world": ["earth", "planet earth", "world", "universe"]
      }
  
      terms = ["hello", "world"]
  
      x = Variable()
      es = ExpansionSearch(terms, exp)(x)
  
      c_dup = Canonicalize(remove_duplicates=False)(x, es)
      g_dup = Graph(x, c_dup)
  
      c = Canonicalize(remove_duplicates=True)(x, es)
      g = Graph(x, c)
  
      assert g_dup.run("hey planet earth universe world") == "hello world world world"
      assert g.run("hey planet earth universe world") == "hello world"
  
  
  def test_list():
      terms = [
          "Blue moon",
          "venus",
          "divider"
      ]
  
      x = Variable()
      e = ListSearch(terms)(x)
      g = Graph(x, e)
  
      assert g.run("Hello world") == []
      assert g.run("hola planet venus") == [{"type": "list", "value": "venus", "range": (12, 17)}]
      assert g.run("What is a blue moon?") == [{"type": "list", "value": "Blue moon", "range": (10, 19)}]
  
  
  def test_list_regex():
      terms = [
          "Hello - world",
          "f*ck"
      ]
  
      fn = node_fn(ListSearch(terms))
  
      assert fn("Hello world, how art thou?") == []
      assert fn("Hello - world, how art thou?") == [{"type": "list", "value": terms[0], "range": (0, 13)}]
      assert fn("what the f*ck!") == [{"type": "list", "value": terms[1], "range": (9, 13)}]
  
  
  def test_constraints_partial():
      constraints = [
          {"name": "1", "items": {"first": "moon", "second": "moon"}},
          {"name": "2", "items": {"second": "kek"}},
          {"name": "3", "items": {"first": "lol", "second": "kek"}}
      ]
  
      x1 = Variable()
      x2 = Variable()
      c = ConstraintSearch(constraints, partial=True)({"first": x1, "second": x2})
  
      g = Graph([x1, x2], c)
  
      assert g.run(values_dict={x1: [], x2: []}) == []
      assert g.run(values_dict={x1: [], x2: [{"type": "search_type", "value": "kek"}]}) == [
          {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0},
          {"type": "constraint", "name": "3", "constraint": {"first": "lol", "second": "kek"}, "missing": ["first"], "score": 0.5}
      ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "moon"}],
                                x2: [{"type": "search_type", "value": "moon"},
                                     {"type": "search_type", "value": "kek"}]}) == [
                 {"type": "constraint", "name": "1", "constraint": {"first": "moon", "second": "moon"}, "missing": [], "score": 1.0},
                 {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0},
                 {"type": "constraint", "name": "3", "constraint": {"first": "lol", "second": "kek"}, "missing": ["first"], "score": 0.5}
             ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "moon"}],
                                x2: [{"type": "search_type", "value": "kek"}]}) == [
                 {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0},
                 {"type": "constraint", "name": "1", "constraint": {"first": "moon", "second": "moon"}, "missing": ["second"], "score": 0.5},
                 {"type": "constraint", "name": "3", "constraint": {"first": "lol", "second": "kek"}, "missing": ["first"], "score": 0.5}
             ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "lol"}],
                                x2: [{"type": "search_type", "value": "kek"}]}) == [
                 {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0},
                 {"type": "constraint", "name": "3", "constraint": {"first": "lol", "second": "kek"}, "missing": [], "score": 1.0}
             ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "lol"}],
                                x2: [{"type": "search_type", "value": "lel"}]}) == [
                 {"type": "constraint", "name": "3", "constraint": {"first": "lol", "second": "kek"}, "missing": ["second"], "score": 0.5}
             ]
  
  
  def test_constraints_complete():
      constraints = [
          {"name": "1", "items": {"first": "moon", "second": "moon"}},
          {"name": "2", "items": {"second": "kek"}},
          {"name": "3", "items": {"first": "lol", "second": "kek"}}
      ]
  
      x1 = Variable()
      x2 = Variable()
      c = ConstraintSearch(constraints, partial=False)({"first": x1, "second": x2})
  
      g = Graph([x1, x2], c)
  
      assert g.run(values_dict={x1: [], x2: []}) == []
      assert g.run(values_dict={x1: [], x2: [{"type": "search_type", "value": "kek"}]}) == [
          {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0},
      ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "moon"}],
                                x2: [{"type": "search_type", "value": "moon"},
                                     {"type": "search_type", "value": "kek"}]}) == [
                 {"type": "constraint", "name": "1", "constraint": {"first": "moon", "second": "moon"}, "missing": [], "score": 1.0},
                 {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0}
             ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "moon"}],
                                x2: [{"type": "search_type", "value": "kek"}]}) == [
                 {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0}
             ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "lol"}],
                                x2: [{"type": "search_type", "value": "kek"}]}) == [
                 {"type": "constraint", "name": "2", "constraint": {"second": "kek"}, "missing": [], "score": 1.0},
                 {"type": "constraint", "name": "3", "constraint": {"first": "lol", "second": "kek"}, "missing": [], "score": 1.0}
             ]
      assert g.run(values_dict={x1: [{"type": "search_type", "value": "lol"}],
                                x2: [{"type": "search_type", "value": "lel"}]}) == []
  