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cargoOptimizer_3DBP_unittest.py
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import unittest
from cargoOptimizer_3DBP import Package, Vehicle, packer
class Test3DBinPacking(unittest.TestCase):
def setUp(self):
# Setting up Packages (packages) and vehicles for testing
self.package1 = Package("Package1", 2, 2, 2, 1)
self.package2 = Package("Package2", 3, 3, 3, 2)
self.package3 = Package("Package3", 1, 1, 1, 1)
self.vehicle = Vehicle("Platform1", "Vehicle1", 5, 5, 5, 10)
def test_package_volume(self):
self.assertEqual(self.package1.get_volume(), 8)
self.assertEqual(self.package2.get_volume(), 27)
self.assertEqual(self.package3.get_volume(), 1)
def test_vehicle_capacity(self):
self.assertEqual(self.vehicle.get_volume(), 125)
self.assertEqual(self.vehicle.get_weight_limit(), 10)
def test_packing_single_package(self):
packed = self.vehicle.pack(self.package1, [0, 0, 0])
self.assertTrue(packed)
self.assertIn(self.package1, self.vehicle.get_packed_packages())
def test_packing_multiple_packages(self):
packer(self.vehicle, [self.package1, self.package2, self.package3])
packed_packages = self.vehicle.get_packed_packages()
self.assertIn(self.package1, packed_packages)
self.assertIn(self.package3, packed_packages)
self.assertIn(self.package2, packed_packages)
self.assertEqual(len(packed_packages), 3)
def test_unpacked_packages_due_to_weight(self):
heavy_package = Package("HeavyPackage", 1, 1, 1, 11)
packer(self.vehicle, [heavy_package])
self.assertIn(heavy_package, self.vehicle.get_unpacked_packages())
self.assertEqual(len(self.vehicle.get_unpacked_packages()), 1)
def test_unpacked_packages_due_to_volume(self):
large_package = Package("LargePackage", 6, 6, 6, 1)
packer(self.vehicle, [large_package])
self.assertIn(large_package, self.vehicle.get_unpacked_packages())
self.assertEqual(len(self.vehicle.get_unpacked_packages()), 1)
def test_large_number_of_small_packages(self):
n = 1000
vehicle = Vehicle("Platform1", "Vehicle1", 100, 100, 100, 10000)
packages = [Package(f"Package{i}", 1, 1, 1, 1) for i in range(n)]
packer(vehicle, packages)
self.assertEqual(len(vehicle.get_packed_packages()), n)
def test_exceeding_weight_limit(self):
vehicle = Vehicle("Platform1", "Vehicle1", 10, 10, 10, 10)
packages = [Package("HeavyPackage", 1, 1, 1, 11)]
packer(vehicle, packages)
self.assertEqual(len(vehicle.get_packed_packages()), 0)
self.assertEqual(len(vehicle.get_unpacked_packages()), 1)
self.assertEqual(vehicle.get_unpacked_packages()[0].get_name(), "HeavyPackage")
def test_exact_fit_packages(self):
vehicle = Vehicle("Platform1", "Vehicle1", 6, 6, 6, 50)
packages = [
Package("Package1", 3, 3, 3, 10),
Package("Package2", 3, 3, 3, 10),
Package("Package3", 3, 3, 3, 10),
Package("Package4", 3, 3, 3, 10)
]
packer(vehicle, packages)
self.assertEqual(len(vehicle.get_packed_packages()), 4)
self.assertEqual(len(vehicle.get_unpacked_packages()), 0)
def test_rotated_fit_packages(self):
vehicle = Vehicle("Platform1", "Vehicle1", 5, 5, 5, 50)
packages = [
Package("Package1", 5, 2, 2, 5),
Package("Package2", 5, 2, 2, 5),
Package("Package3", 2, 5, 2, 5)
]
packer(vehicle, packages)
self.assertEqual(len(vehicle.get_packed_packages()), 3)
self.assertEqual(len(vehicle.get_unpacked_packages()), 0)
def test_overlapping_packages(self):
vehicle = Vehicle("Platform1", "Vehicle1", 6, 6, 6, 50)
package1 = Package("Package1", 3, 3, 3, 5)
package2 = Package("Package2", 3, 3, 3, 5)
package3 = Package("Package3", 3, 3, 3, 5)
self.assertTrue(vehicle.pack(package1, [0, 0, 0]))
self.assertFalse(vehicle.pack(package2, [1, 1, 1])) # This should fail due to overlap
self.assertTrue(vehicle.pack(package3, [3, 3, 3])) # This should succeed
self.assertIn(package1, vehicle.get_packed_packages())
self.assertIn(package3, vehicle.get_packed_packages())
self.assertNotIn(package2, vehicle.get_packed_packages())
def test_large_package_cannot_fit(self):
vehicle = Vehicle("Platform1", "Vehicle1", 10, 10, 10, 100)
large_package = Package("LargePackage", 15, 15, 15, 10)
packer(vehicle, [large_package])
self.assertIn(large_package, vehicle.get_unpacked_packages())
self.assertEqual(len(vehicle.get_packed_packages()), 0)
if __name__ == '__main__':
unittest.main()