def test_members_can_specify_relative_positions_using_base_schemas(self):
from cocktail.schema import Schema, Member
b1 = Member("b1")
b2 = Member("b2")
b3 = Member("b3")
b = Schema()
b.members_order = ["b2", "b3"]
b.add_member(b1)
b.add_member(b2)
b.add_member(b3)
d1 = Member("d1")
d2 = Member("d2", before_member="b2")
d3 = Member("d3", after_member="b1")
d = Schema()
d.inherit(b)
d.add_member(d1)
d.add_member(d2)
d.add_member(d3)
ordered_members = d.ordered_members()
assert ordered_members == [d2, b2, b3, b1, d3, d1]
def test_layers_members_from_derived_schemas(self):
from cocktail.schema import Schema, Member
b1 = Member("b1")
b2 = Member("b2")
b3 = Member("b3")
b4 = Member("b4")
b = Schema()
b.members_order = ["b4", "b3"]
b.add_member(b1)
b.add_member(b2)
b.add_member(b3)
b.add_member(b4)
d1 = Member("d1")
d2 = Member("d2")
d3 = Member("d3")
d4 = Member("d4")
d = Schema()
d.inherit(b)
d.members_order = ["d4", "d3"]
d.add_member(d1)
d.add_member(d2)
d.add_member(d3)
d.add_member(d4)
mlist = b.ordered_members()
assert len(mlist) == 4
assert mlist[:2] == [b4, b3]
assert set(mlist[2:]) == set([b1, b2])
mlist = d.ordered_members(False)
assert len(mlist) == 4
assert mlist[:2] == [d4, d3]
assert set(mlist[2:]) == set([d1, d2])
mlist = d.ordered_members()
assert len(mlist) == 8
assert mlist[:2] == [b4, b3]
assert set(mlist[2:4]) == set([b1, b2])
assert mlist[4:6] == [d4, d3]
assert set(mlist[6:]) == set([d1, d2])
def test_ignores_missing_anchors(self):
from cocktail.schema import Schema, Member
m1 = Member("m1", after_member="m3")
m2 = Member("m2")
schema = Schema()
schema.members_order = ["m2"]
schema.add_member(m1)
schema.add_member(m2)
assert schema.ordered_members() == [m2, m1]
def test_follows_explicit_ordering(self):
from cocktail.schema import Schema, Member
m1 = Member("m1")
m2 = Member("m2")
m3 = Member("m3")
m4 = Member("m4")
schema = Schema()
schema.members_order = ["m1", "m4", "m3", "m2"]
schema.add_member(m1)
schema.add_member(m2)
schema.add_member(m3)
schema.add_member(m4)
assert schema.ordered_members() == [m1, m4, m3, m2]
def test_implicitly_includes_unspecified_members(self):
from cocktail.schema import Schema, Member
m1 = Member("m1")
m2 = Member("m2")
m3 = Member("m3")
m4 = Member("m4")
schema = Schema()
schema.members_order = ["m3", "m2"]
schema.add_member(m1)
schema.add_member(m2)
schema.add_member(m3)
schema.add_member(m4)
ordered_members = schema.ordered_members()
assert len(ordered_members) == 4
assert ordered_members[:2] == [m3, m2]
assert set(ordered_members[2:]) == set([m1, m4])
def test_members_can_specify_relative_positions(self):
from cocktail.schema import Schema, Member
m1 = Member("m1")
m2 = Member("m2")
m3 = Member("m3")
m4 = Member("m4", after_member="m5")
m5 = Member("m5", before_member="m1")
m6 = Member("m6", before_member="m3")
schema = Schema()
schema.members_order = ["m3", "m2"]
schema.add_member(m1)
schema.add_member(m2)
schema.add_member(m3)
schema.add_member(m4)
schema.add_member(m5)
schema.add_member(m6)
ordered_members = schema.ordered_members()
assert ordered_members == [m6, m3, m2, m5, m4, m1]