Spaces:
Running
Running
File size: 10,277 Bytes
5a966bd ec45bf2 5a966bd ec45bf2 5a966bd ec45bf2 5a966bd ec45bf2 5a966bd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 | """
Unit tests for drip_engine module.
"""
import pytest
import math
from shapely.geometry import Polygon, LineString
from drip_engine import (
parse_geofence_to_polygon,
validate_polygon,
polygon_area_hectares,
generate_drip_layout,
estimate_bom,
design_summary,
DripLayoutError,
latlon_to_utm,
)
class TestParseGeofence:
"""Test geofence parsing."""
def test_parse_valid_rectangle(self):
"""Parse valid rectangular polygon."""
geofence = "0,0;100,0;100,100;0,100"
poly = parse_geofence_to_polygon(geofence)
assert poly.is_valid
assert len(list(poly.exterior.coords)) == 5 # 4 + closing point
def test_parse_triangle(self):
"""Parse valid triangle."""
geofence = "0,0;100,0;50,100"
poly = parse_geofence_to_polygon(geofence)
assert poly.is_valid
assert poly.area > 0
def test_parse_with_whitespace(self):
"""Handle extra whitespace."""
geofence = " 0, 0 ; 100 , 0 ; 100 , 100 ; 0 , 100 "
poly = parse_geofence_to_polygon(geofence)
assert poly.is_valid
def test_parse_invalid_format(self):
"""Reject invalid format."""
with pytest.raises(DripLayoutError):
parse_geofence_to_polygon("0,0;100") # Missing y coord
def test_parse_too_few_points(self):
"""Reject polygon with < 3 points."""
with pytest.raises(DripLayoutError):
parse_geofence_to_polygon("0,0;100,100") # Only 2 points
def test_parse_zero_area(self):
"""Reject collinear points (zero area)."""
with pytest.raises(DripLayoutError):
parse_geofence_to_polygon("0,0;50,50;100,100") # Collinear
def test_parse_float_coordinates(self):
"""Parse float coordinates."""
geofence = "0.5,0.5;100.5,0.5;100.5,100.5;0.5,100.5"
poly = parse_geofence_to_polygon(geofence)
assert poly.is_valid
class TestValidatePolygon:
"""Test polygon validation."""
def test_validate_valid_rectangle(self):
"""Validate a valid rectangle."""
poly = Polygon([(0, 0), (100, 0), (100, 100), (0, 100)])
is_valid, msg = validate_polygon(poly)
assert is_valid
assert msg == "Valid"
def test_validate_self_intersecting(self):
"""Reject self-intersecting polygon."""
# Bowtie shape: self-intersecting
poly = Polygon([(0, 0), (100, 100), (100, 0), (0, 100)])
is_valid, msg = validate_polygon(poly)
assert not is_valid
def test_validate_too_small(self):
"""Reject polygon with tiny area."""
poly = Polygon([(0, 0), (0.1, 0), (0.1, 0.1), (0, 0.1)])
is_valid, msg = validate_polygon(poly)
assert not is_valid
assert "too small" in msg.lower()
class TestAreaCalculation:
"""Test area calculation in hectares."""
def test_area_100x100_meters(self):
"""100m x 100m = 1 hectare."""
poly_utm = Polygon([(0, 0), (100, 0), (100, 100), (0, 100)])
area_ha = polygon_area_hectares(poly_utm)
assert abs(area_ha - 1.0) < 0.01
def test_area_50x50_meters(self):
"""50m x 50m = 0.25 hectares."""
poly_utm = Polygon([(0, 0), (50, 0), (50, 50), (0, 50)])
area_ha = polygon_area_hectares(poly_utm)
assert abs(area_ha - 0.25) < 0.01
def test_area_large_field(self):
"""Large field: 500m x 200m = 10 hectares."""
poly_utm = Polygon([(0, 0), (500, 0), (500, 200), (0, 200)])
area_ha = polygon_area_hectares(poly_utm)
assert abs(area_ha - 10.0) < 0.01
class TestDripLayout:
"""Test drip layout generation."""
def test_generate_layout_rectangle(self):
"""Generate layout for a rectangular field."""
# 100m x 50m field (0.5 ha)
poly_utm = Polygon([(0, 0), (100, 0), (100, 50), (0, 50)])
design = generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=0
)
assert design["farm_area_ha"] > 0
assert design["total_main_length_m"] > 0
assert len(design["laterals"]) > 0
assert design["total_drip_tape_m"] > 0
assert design["emitter_count"] > 0
def test_generate_layout_with_headland(self):
"""Headland buffer reduces area and pipe length."""
poly_utm = Polygon([(0, 0), (100, 0), (100, 100), (0, 100)])
design_no_buffer = generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=0
)
design_with_buffer = generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=5
)
# Area should be smaller with buffer
assert design_with_buffer["farm_area_ha"] < design_no_buffer["farm_area_ha"]
# Total pipe should be less
assert (
design_with_buffer["total_drip_tape_m"]
< design_no_buffer["total_drip_tape_m"]
)
def test_generate_layout_crop_tomato(self):
"""Tomato has tighter spacing than orchard."""
poly_utm = Polygon([(0, 0), (200, 0), (200, 100), (0, 100)])
design_tomato = generate_drip_layout(
poly_utm, crop="tomato", headland_buffer_m=0
)
design_orchard = generate_drip_layout(
poly_utm, crop="orchard", headland_buffer_m=0
)
# Tomato should have tighter spacing (more laterals, more tape)
assert design_tomato["total_drip_tape_m"] > design_orchard["total_drip_tape_m"]
def test_generate_layout_override_spacing(self):
"""Override lateral spacing parameter."""
poly_utm = Polygon([(0, 0), (200, 0), (200, 100), (0, 100)])
design_default = generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=0
)
design_tight = generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=0, override_spacing_m=0.5
)
design_loose = generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=0, override_spacing_m=2.0
)
# Tighter spacing = more tape
assert design_tight["total_drip_tape_m"] > design_loose["total_drip_tape_m"]
def test_generate_layout_irregular_polygon(self):
"""L-shaped field should still generate layout."""
# L-shape: rectangle + extension
poly_utm = Polygon(
[
(0, 0),
(100, 0),
(100, 100),
(50, 100),
(50, 50),
(0, 50),
]
)
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
assert design["farm_area_ha"] > 0
assert len(design["laterals"]) > 0
def test_headland_too_large_raises_error(self):
"""Headland larger than field dimensions should raise error."""
poly_utm = Polygon([(0, 0), (10, 0), (10, 10), (0, 10)])
with pytest.raises(DripLayoutError):
generate_drip_layout(
poly_utm, crop="generic", headland_buffer_m=20
) # Larger than field
class TestBOM:
"""Test bill of materials estimation."""
def test_bom_calculation(self):
"""BOM should have all required fields."""
poly_utm = Polygon([(0, 0), (100, 0), (100, 100), (0, 100)])
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
bom = estimate_bom(design, unit="inr")
assert "main_line_16mm_m" in bom
assert "drip_tape_16mm_m" in bom
assert "inline_emitters" in bom
assert "total_cost_inr" in bom or "total_cost" in bom
assert bom.get("total_cost_inr", bom.get("total_cost")) > 0
assert bom["currency"] == "INR"
def test_bom_cost_breakdown(self):
"""Total cost should equal sum of components."""
poly_utm = Polygon([(0, 0), (200, 0), (200, 100), (0, 100)])
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
bom = estimate_bom(design, unit="inr")
total = bom["cost_main"] + bom["cost_drip_tape"] + bom["cost_emitters"] + bom["cost_valves"]
total_cost = bom.get("total_cost_inr", bom.get("total_cost"))
assert abs(total_cost - total) < 0.01
def test_bom_metric_mode(self):
"""Metric mode should not include costs."""
poly_utm = Polygon([(0, 0), (100, 0), (100, 100), (0, 100)])
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
bom = estimate_bom(design, unit="metric")
assert "total_cost_usd" not in bom
assert "main_line_16mm_m" in bom
class TestDesignSummary:
"""Test human-readable design summary."""
def test_summary_format(self):
"""Summary should contain key metrics."""
poly_utm = Polygon([(0, 0), (100, 0), (100, 100), (0, 100)])
design = generate_drip_layout(poly_utm, crop="tomato", headland_buffer_m=1.0)
bom = estimate_bom(design, unit="usd")
summary = design_summary(design, bom)
assert "Drip Irrigation Design Summary" in summary
assert "Farm Area" in summary
assert "Crop" in summary
assert "Tomato" in summary
assert "Main Line Length" in summary
assert "Total Cost" in summary
class TestEdgeCases:
"""Test edge cases and boundary conditions."""
def test_very_small_polygon(self):
"""Small polygon (1m x 1m) should still work."""
poly_utm = Polygon([(0, 0), (1, 0), (1, 1), (0, 1)])
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
assert design["farm_area_ha"] > 0
def test_long_thin_polygon(self):
"""Long, thin field (strip) should still work."""
poly_utm = Polygon([(0, 0), (1000, 0), (1000, 5), (0, 5)])
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
assert len(design["laterals"]) > 0
def test_triangle_polygon(self):
"""Triangular field should work."""
poly_utm = Polygon([(0, 0), (100, 0), (50, 100)])
design = generate_drip_layout(poly_utm, crop="generic", headland_buffer_m=0)
assert design["farm_area_ha"] > 0
if __name__ == "__main__":
pytest.main([__file__, "-v"])
|