def test_changed_values_step(self):
"""Tests if values changed at specified steps in step().
Note, in m.step() CurrStep is logically tested one step later.
"""
m = BirthDeathModel( 0.1, 0.2, 0.3,ChangedBirthProb=0.6,\
ChangedBirthStep=3,ChangedDeathProb=0.3,ChangedDeathStep=4,\
MaxStep=5)
# all values should be as initialized
m.step()
assert m.CurrStep == 1
assert m.BirthProb == 0.1
assert m.DeathProb == 0.2
assert m.CurrBirthProb == 0.1
assert m.CurrDeathProb == 0.2
# continue 2 steps
m.step()
m.step()
# when logically evaluated CurrBirthProb should change
# from 0.1 to 0.6
m.step()
assert m.CurrStep == 4
assert m.BirthProb == 0.1
assert m.DeathProb == 0.2
assert m.CurrBirthProb == 0.6
assert m.CurrDeathProb == 0.2
# All values other than CurrStep should be as above
# except that CurrDeathProb should change from 0.2 to 0.3
m.step()
assert m.CurrStep == 5
assert m.BirthProb == 0.1
assert m.DeathProb == 0.2
assert m.CurrBirthProb == 0.6
assert m.CurrDeathProb == 0.3
def test_changed_values_step(self):
"""Tests if values changed at specified steps in step().
Note, in m.step() CurrStep is logically tested one step later.
"""
m = BirthDeathModel( 0.1, 0.2, 0.3,ChangedBirthProb=0.6,\
ChangedBirthStep=3,ChangedDeathProb=0.3,ChangedDeathStep=4,\
MaxStep=5)
# all values should be as initialized
m.step()
assert m.CurrStep == 1
assert m.BirthProb == 0.1
assert m.DeathProb == 0.2
assert m.CurrBirthProb == 0.1
assert m.CurrDeathProb == 0.2
# continue 2 steps
m.step()
m.step()
# when logically evaluated CurrBirthProb should change
# from 0.1 to 0.6
m.step()
assert m.CurrStep == 4
assert m.BirthProb == 0.1
assert m.DeathProb == 0.2
assert m.CurrBirthProb == 0.6
assert m.CurrDeathProb == 0.2
# All values other than CurrStep should be as above
# except that CurrDeathProb should change from 0.2 to 0.3
m.step()
assert m.CurrStep == 5
assert m.BirthProb == 0.1
assert m.DeathProb == 0.2
assert m.CurrBirthProb == 0.6
assert m.CurrDeathProb == 0.3
def test_timeOk(self):
"""BirthDeathModel TimeOk should return True if time not exceeded"""
b = BirthDeathModel(0.1, 0.2, 0.3, MaxStep=5)
assert b.timeOk()
b.CurrStep = 4
assert b.timeOk()
b.CurrStep = 5
assert not b.timeOk()
b.CurrStep = 1000
assert not b.timeOk()
b.MaxStep = None
assert b.timeOk()
b.MaxStep = 1001
assert b.timeOk()
b.step()
assert not b.timeOk()
def test_timeOk(self):
"""BirthDeathModel TimeOk should return True if time not exceeded"""
b = BirthDeathModel(0.1, 0.2, 0.3, MaxStep=5)
assert b.timeOk()
b.CurrStep = 4
assert b.timeOk()
b.CurrStep = 5
assert not b.timeOk()
b.CurrStep = 1000
assert not b.timeOk()
b.MaxStep = None
assert b.timeOk()
b.MaxStep = 1001
assert b.timeOk()
b.step()
assert not b.timeOk()
def test_step(self):
"""BirthDeathModel step should match hand-calculated results"""
m = BirthDeathModel(BirthProb=0.1, DeathProb=0.2, TimePerStep=1)
born_and_died = FakeRandom([0], True)
born_only = FakeRandom([1, 0], True)
died_only = FakeRandom([0, 1], True)
neither = FakeRandom([1], True)
kill_alternate = FakeRandom([0, 1, 1, 1], True)
born_alternate = FakeRandom([1, 1, 1, 0], True)
#check that with neither birth nor death, we just continue
m.step(neither)
self.assertEqual(len(m.Tree.Children), 0)
#check that with born_only we get a duplication
m.step(born_only)
self.assertEqual(len(m.Tree.Children), 2)
assert m.Tree not in m.CurrTaxa
for i in m.CurrTaxa:
assert i.Parent is m.Tree
self.assertEqual(i.Length, 1)
#check that with a second round of born_only we duplicate again
m.step(born_only)
self.assertEqual(len(m.Tree.Children), 2)
self.assertEqual(len(list(m.Tree.traverse())), 4)
for i in m.Tree.traverse():
self.assertEqual(i.Length, 1)
for i in m.Tree.Children:
self.assertEqual(i.Length, 1)
#check that branch lengths add correctly
for i in range(4):
m.step(neither)
self.assertEqual(len(m.CurrTaxa), 4)
self.assertEqual(len(m.Tree.Children), 2)
self.assertEqual(len(list(m.Tree.traverse())), 4)
for i in m.Tree.traverse():
self.assertEqual(i.Length, 5)
for i in m.Tree.Children:
self.assertEqual(i.Length, 1)
#check that we can kill offspring correctly
m.step(kill_alternate)
self.assertEqual(len(m.CurrTaxa), 2)
#make sure we killed the right children
m.Tree.assignIds()
for i in m.Tree.Children:
#note that killing a child doesn't remove it, just stops it changing
self.assertEqual(len(i.Children), 2)
self.assertEqual(i.Children[0].Length, 5)
self.assertEqual(i.Children[1].Length, 6)
self.assertEqual([i.Length for i in m.Tree.traverse()], \
[5,6,5,6])
#make sure that born_and_died does the same thing as neither
m.step(born_and_died)
self.assertEqual([i.Length for i in m.Tree.traverse()], \
[5,7,5,7])
m.step(neither)
self.assertEqual([i.Length for i in m.Tree.traverse()], \
[5,8,5,8])
#check that only CurrTaxa are brought forward
self.assertEqual([i.Length for i in m.CurrTaxa], [8, 8])
#check that we can duplicate a particular taxon
m.step(born_alternate)
self.assertEqual([i.Length for i in m.CurrTaxa], [9, 1, 1])
self.assertEqual(m.CurrTaxa[1].Parent.Length, 8)
#check that we can kill 'em all
m.step(died_only)
self.assertEqual(len(m.CurrTaxa), 0)
def test_taxaOk(self):
"""BirthDeathModel TaxaOk should return True if taxa not exceeded"""
b = BirthDeathModel(0.1, 0.2, 0.3, MaxTaxa=5)
born_alternate = FakeRandom([1, 1, 1, 0], True)
born_only = FakeRandom([1, 0], True)
kill_only = FakeRandom([0, 1, 0, 1], True)
#start off with single taxon
assert b.taxaOk()
#taxa are OK if there are a few
b.step(born_only) #now 2 taxa
assert b.taxaOk()
b.step(born_only) #now 4 taxa
assert b.taxaOk()
b.step(born_only) #now 8 taxa
assert not b.taxaOk()
b.MaxTaxa = 8
assert not b.taxaOk()
b.MaxTaxa = 9
assert b.taxaOk()
b.MaxTaxa = 17
assert b.taxaOk()
b.step(born_only)
assert b.taxaOk()
b.step(born_only)
assert not b.taxaOk()
#ok if no maximum
b.MaxTaxa = None
assert b.taxaOk()
#not ok if there are no taxa left
b.step(kill_only)
assert not b.taxaOk()
#still not OK if not MaxTaxa
b.MaxTaxa = None
assert not b.taxaOk()
def test_step(self):
"""BirthDeathModel step should match hand-calculated results"""
m = BirthDeathModel(BirthProb=0.1, DeathProb=0.2, TimePerStep=1)
born_and_died = FakeRandom([0],True)
born_only = FakeRandom([1,0],True)
died_only = FakeRandom([0,1],True)
neither = FakeRandom([1],True)
kill_alternate = FakeRandom([0,1,1,1], True)
born_alternate = FakeRandom([1,1,1,0], True)
#check that with neither birth nor death, we just continue
m.step(neither)
self.assertEqual(len(m.Tree.Children), 0)
#check that with born_only we get a duplication
m.step(born_only)
self.assertEqual(len(m.Tree.Children), 2)
assert m.Tree not in m.CurrTaxa
for i in m.CurrTaxa:
assert i.Parent is m.Tree
self.assertEqual(i.Length, 1)
#check that with a second round of born_only we duplicate again
m.step(born_only)
self.assertEqual(len(m.Tree.Children), 2)
self.assertEqual(len(list(m.Tree.traverse())), 4)
for i in m.Tree.traverse():
self.assertEqual(i.Length, 1)
for i in m.Tree.Children:
self.assertEqual(i.Length, 1)
#check that branch lengths add correctly
for i in range(4):
m.step(neither)
self.assertEqual(len(m.CurrTaxa), 4)
self.assertEqual(len(m.Tree.Children), 2)
self.assertEqual(len(list(m.Tree.traverse())), 4)
for i in m.Tree.traverse():
self.assertEqual(i.Length, 5)
for i in m.Tree.Children:
self.assertEqual(i.Length, 1)
#check that we can kill offspring correctly
m.step(kill_alternate)
self.assertEqual(len(m.CurrTaxa), 2)
#make sure we killed the right children
m.Tree.assignIds()
for i in m.Tree.Children:
#note that killing a child doesn't remove it, just stops it changing
self.assertEqual(len(i.Children), 2)
self.assertEqual(i.Children[0].Length, 5)
self.assertEqual(i.Children[1].Length, 6)
self.assertEqual([i.Length for i in m.Tree.traverse()], \
[5,6,5,6])
#make sure that born_and_died does the same thing as neither
m.step(born_and_died)
self.assertEqual([i.Length for i in m.Tree.traverse()], \
[5,7,5,7])
m.step(neither)
self.assertEqual([i.Length for i in m.Tree.traverse()], \
[5,8,5,8])
#check that only CurrTaxa are brought forward
self.assertEqual([i.Length for i in m.CurrTaxa], [8,8])
#check that we can duplicate a particular taxon
m.step(born_alternate)
self.assertEqual([i.Length for i in m.CurrTaxa], [9,1,1])
self.assertEqual(m.CurrTaxa[1].Parent.Length, 8)
#check that we can kill 'em all
m.step(died_only)
self.assertEqual(len(m.CurrTaxa), 0)
def test_taxaOk(self):
"""BirthDeathModel TaxaOk should return True if taxa not exceeded"""
b = BirthDeathModel(0.1, 0.2, 0.3, MaxTaxa=5)
born_alternate = FakeRandom([1,1,1,0], True)
born_only = FakeRandom([1,0],True)
kill_only = FakeRandom([0,1,0,1], True)
#start off with single taxon
assert b.taxaOk()
#taxa are OK if there are a few
b.step(born_only) #now 2 taxa
assert b.taxaOk()
b.step(born_only) #now 4 taxa
assert b.taxaOk()
b.step(born_only) #now 8 taxa
assert not b.taxaOk()
b.MaxTaxa = 8
assert not b.taxaOk()
b.MaxTaxa = 9
assert b.taxaOk()
b.MaxTaxa = 17
assert b.taxaOk()
b.step(born_only)
assert b.taxaOk()
b.step(born_only)
assert not b.taxaOk()
#ok if no maximum
b.MaxTaxa = None
assert b.taxaOk()
#not ok if there are no taxa left
b.step(kill_only)
assert not b.taxaOk()
#still not OK if not MaxTaxa
b.MaxTaxa = None
assert not b.taxaOk()