def test_parse_extended_diagonal_crossing():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(11, 7))
c = Node("c", Pos(11, 1))
d = Node("d", Pos(4, 7))
assert (
parse(
r"""
(a) (c)
\ /
\ --
X
/ --
/ \
(d) (b)
"""
)
== Graph(
nodes=(a, b, c, d),
edges=(
Edge(a, "\\\\X--\\", b),
Edge(b, "\\--X\\\\", a),
Edge(c, "/--X//", d),
Edge(d, "//X--/", c),
),
)
)
def test_parse_extended_vertical_crossing():
a = Node("a", Pos(7, 1))
b = Node("b", Pos(7, 6))
c = Node("c", Pos(4, 3))
d = Node("d", Pos(11, 3))
assert (
parse(
"""
(a)
|
(c)-+--(d)
|
|
(b)
"""
)
== Graph(
nodes=(a, b, c, d),
edges=(
Edge(a, "|+||", b),
Edge(b, "||+|", a),
Edge(c, "-+--", d),
Edge(d, "--+-", c),
),
)
)
def test_parse_multiple_planes():
a = Node("a", Pos(0, 0, 0))
b = Node("b", Pos(5, 0, 0))
c = Node("c", Pos(5, 0, 1))
assert parse("(a)->(b)", "(a)->(c)") == Graph(
nodes=(a, b, c), edges=(Edge(a, "->", b), Edge(a, "->", c))
)
def parse(*planes):
node_tokens, edge_tokens = tokenize(*planes)
nodes_by_symbol = _get_nodes_by_symbol(node_tokens)
return Graph(
nodes_by_symbol.values(),
_generate_edges(edge_tokens, {t.pos: t
for t in node_tokens}, nodes_by_symbol),
)
def test_parse_single_downward_bar():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(6, 3))
assert (
parse(
r"""
(a)
\
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "\\", b), Edge(b, "\\", a)))
)
def test_parse_single_down_arrow():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(4, 3))
assert (
parse(
"""
(a)
v
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "v", b),))
)
def test_parse_single_up_arrow():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(4, 3))
assert (
parse(
"""
(a)
^
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(b, "^", a),))
)
def test_parse_single_upward_bar():
a = Node("a", Pos(6, 1))
b = Node("b", Pos(4, 3))
assert (
parse(
"""
(a)
/
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "/", b), Edge(b, "/", a)))
)
def test_parse_single_vertical_bar():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(4, 3))
assert (
parse(
"""
(a)
|
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "|", b), Edge(b, "|", a)))
)
def test_parse_extended_upward_bar():
a = Node("a", Pos(5, 1))
b = Node("b", Pos(4, 4))
assert (
parse(
"""
(a)
/
/
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "//", b), Edge(b, "//", a)))
)
def test_parse_extended_up_arrow():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(4, 4))
assert (
parse(
"""
(a)
^
|
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(b, "|^", a),))
)
def test_parse_extended_down_arrow():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(4, 4))
assert (
parse(
"""
(a)
|
v
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "|v", b),))
)
def test_parse_extended_vertical(__):
a = Node("a", Pos(4, 1))
b = Node("b", Pos(4, 4))
assert (
parse(
f"""
(a)
{__[0]}
{__[1:]}
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, __, b), Edge(b, __[::-1], a)))
)
def test_parse_extended_downward_bar():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(5, 4))
assert (
parse(
r"""
(a)
\
\
(b)
"""
)
== Graph(nodes=(a, b), edges=(Edge(a, "\\\\", b), Edge(b, "\\\\", a)))
)
def test_parse_single_vertical_crossing():
a = Node("a", Pos(6, 1))
b = Node("b", Pos(6, 3))
c = Node("c", Pos(4, 2))
d = Node("d", Pos(8, 2))
assert (
parse(
"""
(a)
(c)+(d)
(b)
"""
)
== Graph(
nodes=(a, b, c, d),
edges=(Edge(a, "+", b), Edge(b, "+", a), Edge(c, "+", d), Edge(d, "+", c)),
)
)
def test_parse_single_diagonal_crossing():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(8, 3))
c = Node("c", Pos(8, 1))
d = Node("d", Pos(4, 3))
assert (
parse(
"""
(a) (c)
X
(d) (b)
"""
)
== Graph(
nodes=(a, b, c, d),
edges=(Edge(a, "X", b), Edge(b, "X", a), Edge(c, "X", d), Edge(d, "X", c)),
)
)
def test_parse_bundle():
a = Node("a", Pos(8, 1))
b = Node("b", Pos(11, 1))
c = Node("c", Pos(14, 1))
d = Node("d", Pos(11, 3))
e = Node("e", Pos(8, 8))
f = Node("f", Pos(11, 8))
g = Node("g", Pos(14, 8))
assert (
parse(
r"""
(a)(b)(c)
\ | /
(d)
^^^
/ | \
/ | \
v v v
(e)(f)(g)
"""
)
== Graph(
nodes=(a, b, c, d, e, f, g),
edges=(
Edge(a, "\\", d),
Edge(b, "|", d),
Edge(c, "/", d),
Edge(d, "/", c),
Edge(d, "\\", a),
Edge(d, "^//v", e),
Edge(d, "^\\\\v", g),
Edge(d, "^||v", f),
Edge(d, "|", b),
Edge(e, "v//^", d),
Edge(f, "v||^", d),
Edge(g, "v\\\\^", d),
),
)
)
def test_parse_spiral():
a = Node("a", Pos(4, 1))
b = Node("b", Pos(8, 5))
assert (
parse(
r"""
(a)----
- \
/ \ |
| \ |
| (b) |
\ /
-----
"""
)
== Graph(
nodes=(a, b),
edges=(
Edge(a, "----\\|||/-----\\||/-\\\\", b),
Edge(b, "\\\\-/||\\-----/|||\\----", a),
),
)
)
def test_parse_single_horizontal_bar():
a = Node("a", Pos(0, 0))
b = Node("b", Pos(4, 0))
assert parse("(a)-(b)") == Graph(
nodes=(a, b), edges=(Edge(a, "-", b), Edge(b, "-", a))
)
def test_parse_single_left_arrow():
a = Node("a", Pos(0, 0))
b = Node("b", Pos(4, 0))
assert parse("(a)<(b)") == Graph(nodes=(a, b), edges=(Edge(b, "<", a),))
def test_parse_urban_grid():
_1 = Node("1", Pos(4, 1))
_2 = Node("2", Pos(11, 1))
_3 = Node("3", Pos(19, 1))
_4 = Node("4", Pos(28, 1))
_5 = Node("5", Pos(36, 1))
_6 = Node("6", Pos(44, 1))
_7 = Node("7", Pos(4, 5))
_8 = Node("8", Pos(44, 5))
_9 = Node("9", Pos(4, 9))
_10 = Node("10", Pos(10, 9))
_11 = Node("11", Pos(18, 9))
_12 = Node("12", Pos(27, 9))
_13 = Node("13", Pos(35, 9))
_14 = Node("14", Pos(43, 9))
assert (
parse(
"""
(1)----(2)-----(3)------(4)-----(5)-----(6)
^ | | | ^ |
| | | | | |
| | | | | |
(7)-----+-------+--------+-------+------(8)
| | | | | |
| | | | | |
| | | | | |
(9)---(10)----(11)<----(12)----(13)----(14)
"""
)
== Graph(
nodes=(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14),
edges=(
Edge(_1, "----", _2),
Edge(_2, "----", _1),
Edge(_2, "-----", _3),
Edge(_2, "|||+|||", _10),
Edge(_3, "-----", _2),
Edge(_3, "------", _4),
Edge(_3, "|||+|||", _11),
Edge(_4, "-----", _5),
Edge(_4, "------", _3),
Edge(_4, "|||+|||", _12),
Edge(_5, "-----", _4),
Edge(_5, "-----", _6),
Edge(_6, "-----", _5),
Edge(_6, "|||", _8),
Edge(_7, "-----+-------+--------+-------+------", _8),
Edge(_7, "||^", _1),
Edge(_7, "|||", _9),
Edge(_8, "------+-------+--------+-------+-----", _7),
Edge(_8, "|||", _14),
Edge(_8, "|||", _6),
Edge(_9, "---", _10),
Edge(_9, "|||", _7),
Edge(_10, "---", _9),
Edge(_10, "----", _11),
Edge(_10, "|||+|||", _2),
Edge(_11, "----", _10),
Edge(_11, "|||+|||", _3),
Edge(_12, "----", _13),
Edge(_12, "----<", _11),
Edge(_12, "|||+|||", _4),
Edge(_13, "----", _12),
Edge(_13, "----", _14),
Edge(_13, "|||+||^", _5),
Edge(_14, "----", _13),
Edge(_14, "|||", _8),
),
)
)
def test_parse_extended_left_arrow():
a = Node("a", Pos(0, 0))
b = Node("b", Pos(5, 0))
assert parse("(a)<-(b)") == Graph(nodes=(a, b), edges=(Edge(b, "-<", a),))
def test_parse_single_right_arrow():
a = Node("a", Pos(0, 0))
b = Node("b", Pos(4, 0))
assert parse("(a)>(b)") == Graph(nodes=(a, b), edges=(Edge(a, ">", b),))
def test_parse_extended_horizontal(__):
a = Node("a", Pos(0, 0))
b = Node("b", Pos(5, 0))
assert parse(f"(a){__}(b)") == Graph(
nodes=(a, b), edges=(Edge(a, __, b), Edge(b, __[::-1], a))
)
def test_parse_extended_right_arrow():
a = Node("a", Pos(0, 0))
b = Node("b", Pos(5, 0))
assert parse("(a)->(b)") == Graph(nodes=(a, b), edges=(Edge(a, "->", b),))