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"""Tests for models (Grid, entities, state)."""
import pytest
from app.models.grid import Grid, Segment
from app.models.entities import Store, Destination, Tunnel
from app.models.state import SearchState, PathResult, SearchStep
class TestSegment:
"""Tests for Segment model."""
def test_segment_creation(self):
"""Test basic segment creation."""
segment = Segment(src=(0, 0), dst=(1, 0), traffic=2)
assert segment.src == (0, 0)
assert segment.dst == (1, 0)
assert segment.traffic == 2
def test_segment_normalization(self):
"""Test that segment normalizes direction (src < dst)."""
segment = Segment(src=(1, 0), dst=(0, 0), traffic=1)
assert segment.src == (0, 0)
assert segment.dst == (1, 0)
def test_segment_is_blocked(self):
"""Test blocked segment detection."""
blocked = Segment(src=(0, 0), dst=(1, 0), traffic=0)
passable = Segment(src=(0, 0), dst=(1, 0), traffic=1)
assert blocked.is_blocked is True
assert passable.is_blocked is False
def test_segment_get_key(self):
"""Test segment key generation."""
segment = Segment(src=(0, 0), dst=(1, 0), traffic=1)
assert segment.get_key() == ((0, 0), (1, 0))
class TestGrid:
"""Tests for Grid model."""
def test_grid_creation(self):
"""Test basic grid creation."""
grid = Grid(width=5, height=5)
assert grid.width == 5
assert grid.height == 5
assert len(grid.segments) == 0
def test_add_segment(self):
"""Test adding segments to grid."""
grid = Grid(width=3, height=3)
grid.add_segment((0, 0), (1, 0), 2)
assert len(grid.segments) == 1
segment = grid.get_segment((0, 0), (1, 0))
assert segment is not None
assert segment.traffic == 2
def test_add_segment_reversed(self):
"""Test adding segment with reversed coordinates."""
grid = Grid(width=3, height=3)
grid.add_segment((1, 0), (0, 0), 2)
# Should still be accessible both ways
segment = grid.get_segment((0, 0), (1, 0))
assert segment is not None
assert segment.traffic == 2
def test_get_traffic(self):
"""Test getting traffic level."""
grid = Grid(width=3, height=3)
grid.add_segment((0, 0), (1, 0), 3)
assert grid.get_traffic((0, 0), (1, 0)) == 3
assert grid.get_traffic((1, 0), (0, 0)) == 3 # Reversed
assert grid.get_traffic((0, 0), (0, 1)) == 0 # Non-existent
def test_is_blocked(self):
"""Test blocked segment detection."""
grid = Grid(width=3, height=3)
grid.add_segment((0, 0), (1, 0), 0)
grid.add_segment((0, 0), (0, 1), 1)
assert grid.is_blocked((0, 0), (1, 0)) is True
assert grid.is_blocked((0, 0), (0, 1)) is False
assert grid.is_blocked((1, 1), (2, 1)) is True # Non-existent = blocked
def test_is_valid_position(self):
"""Test position validation."""
grid = Grid(width=3, height=3)
assert grid.is_valid_position((0, 0)) is True
assert grid.is_valid_position((2, 2)) is True
assert grid.is_valid_position((3, 0)) is False
assert grid.is_valid_position((0, 3)) is False
assert grid.is_valid_position((-1, 0)) is False
def test_get_neighbors(self, simple_grid):
"""Test getting neighbors."""
# Corner (0,0) has 2 neighbors
neighbors = simple_grid.get_neighbors((0, 0))
assert len(neighbors) == 2
assert (1, 0) in neighbors
assert (0, 1) in neighbors
# Center (1,1) has 4 neighbors
neighbors = simple_grid.get_neighbors((1, 1))
assert len(neighbors) == 4
def test_get_neighbors_with_blocked(self, grid_with_blocked):
"""Test neighbors exclude blocked paths."""
# (1,1) normally has 4 neighbors but one path is blocked
neighbors = grid_with_blocked.get_neighbors((1, 1))
assert (2, 1) not in neighbors # Blocked
assert (0, 1) in neighbors
assert (1, 0) in neighbors
assert (1, 2) in neighbors
def test_to_dict(self, simple_grid):
"""Test grid serialization."""
result = simple_grid.to_dict()
assert result["width"] == 3
assert result["height"] == 3
assert "segments" in result
assert len(result["segments"]) > 0
class TestStore:
"""Tests for Store entity."""
def test_store_creation(self):
"""Test store creation."""
store = Store(id=1, position=(5, 3))
assert store.id == 1
assert store.position == (5, 3)
def test_store_to_dict(self):
"""Test store serialization."""
store = Store(id=2, position=(1, 2))
result = store.to_dict()
assert result["id"] == 2
assert result["position"]["x"] == 1
assert result["position"]["y"] == 2
class TestDestination:
"""Tests for Destination entity."""
def test_destination_creation(self):
"""Test destination creation."""
dest = Destination(id=1, position=(3, 4))
assert dest.id == 1
assert dest.position == (3, 4)
def test_destination_to_dict(self):
"""Test destination serialization."""
dest = Destination(id=3, position=(2, 5))
result = dest.to_dict()
assert result["id"] == 3
assert result["position"]["x"] == 2
assert result["position"]["y"] == 5
class TestTunnel:
"""Tests for Tunnel entity."""
def test_tunnel_creation(self):
"""Test tunnel creation."""
tunnel = Tunnel(entrance1=(0, 0), entrance2=(5, 5))
assert tunnel.entrance1 == (0, 0)
assert tunnel.entrance2 == (5, 5)
def test_tunnel_cost(self):
"""Test tunnel cost calculation (Manhattan distance)."""
tunnel = Tunnel(entrance1=(0, 0), entrance2=(3, 4))
assert tunnel.cost == 7 # |3-0| + |4-0| = 7
def test_tunnel_cost_same_row(self):
"""Test tunnel cost on same row."""
tunnel = Tunnel(entrance1=(0, 5), entrance2=(10, 5))
assert tunnel.cost == 10
def test_tunnel_cost_same_column(self):
"""Test tunnel cost on same column."""
tunnel = Tunnel(entrance1=(3, 0), entrance2=(3, 7))
assert tunnel.cost == 7
def test_get_other_entrance(self):
"""Test getting other entrance."""
tunnel = Tunnel(entrance1=(0, 0), entrance2=(5, 5))
assert tunnel.get_other_entrance((0, 0)) == (5, 5)
assert tunnel.get_other_entrance((5, 5)) == (0, 0)
def test_get_other_entrance_invalid(self):
"""Test error on invalid entrance."""
tunnel = Tunnel(entrance1=(0, 0), entrance2=(5, 5))
with pytest.raises(ValueError):
tunnel.get_other_entrance((1, 1))
def test_has_entrance_at(self):
"""Test entrance detection."""
tunnel = Tunnel(entrance1=(0, 0), entrance2=(5, 5))
assert tunnel.has_entrance_at((0, 0)) is True
assert tunnel.has_entrance_at((5, 5)) is True
assert tunnel.has_entrance_at((1, 1)) is False
def test_tunnel_to_dict(self):
"""Test tunnel serialization."""
tunnel = Tunnel(entrance1=(1, 2), entrance2=(4, 6))
result = tunnel.to_dict()
assert result["entrance1"]["x"] == 1
assert result["entrance1"]["y"] == 2
assert result["entrance2"]["x"] == 4
assert result["entrance2"]["y"] == 6
assert result["cost"] == 7
class TestSearchState:
"""Tests for SearchState model."""
def test_search_state_creation(self, simple_grid, sample_stores, sample_destinations, sample_tunnels):
"""Test search state creation."""
state = SearchState(
grid=simple_grid,
stores=sample_stores,
destinations=sample_destinations,
tunnels=sample_tunnels,
)
assert state.grid == simple_grid
assert len(state.stores) == 2
assert len(state.destinations) == 3
assert len(state.tunnels) == 2
class TestPathResult:
"""Tests for PathResult model."""
def test_path_result_creation(self):
"""Test path result creation."""
result = PathResult(
plan="right,right,up",
cost=5.0,
nodes_expanded=10,
path=[(0, 0), (1, 0), (2, 0), (2, 1)],
)
assert result.plan == "right,right,up"
assert result.cost == 5.0
assert result.nodes_expanded == 10
assert len(result.path) == 4
def test_path_result_no_solution(self):
"""Test path result when no solution exists."""
result = PathResult(
plan="",
cost=float("inf"),
nodes_expanded=50,
path=[],
)
assert result.plan == ""
assert result.cost == float("inf")
assert len(result.path) == 0
class TestSearchStep:
"""Tests for SearchStep model."""
def test_search_step_creation(self):
"""Test search step creation."""
step = SearchStep(
step_number=5,
current_node=(2, 3),
action="right",
frontier=[(3, 3), (2, 4)],
explored=[(0, 0), (1, 0), (2, 0)],
current_path=[(0, 0), (1, 0), (2, 0), (2, 1), (2, 2), (2, 3)],
path_cost=6.0,
)
assert step.step_number == 5
assert step.current_node == (2, 3)
assert step.action == "right"
assert len(step.frontier) == 2
assert len(step.explored) == 3
def test_search_step_to_dict(self):
"""Test search step serialization."""
step = SearchStep(
step_number=0,
current_node=(0, 0),
action=None,
frontier=[(1, 0)],
explored=[],
current_path=[(0, 0)],
path_cost=0.0,
)
result = step.to_dict()
assert result["stepNumber"] == 0
assert result["currentNode"]["x"] == 0
assert result["currentNode"]["y"] == 0
assert result["action"] is None
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