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tests.py
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import unittest
from Computer import Computer
class TestInstructions(unittest.TestCase):
def setUp(self):
self.computer = Computer()
def test_load(self):
self.computer.load_program([['load', [2, '1']]])
self.computer.run_program()
self.failUnless(self.computer.memory['1'].value == 2)
def test_move(self):
self.computer.load_program([
['load', [2, '1']],
['move', ['1', '2']]
])
self.computer.run_program()
self.failUnless(self.computer.memory['2'].value == 2)
def test_dec(self):
self.computer.load_program([
['load', [2, '1']],
['dec', ['1']],
['dec', ['1']],
['dec', ['1']],
])
self.computer.run_program()
self.failUnless(self.computer.memory['1'].value == -1)
def test_inc(self):
self.computer.load_program([
['load', [2, '1']],
['inc', ['1']],
['inc', ['1']],
['inc', ['1']],
])
self.computer.run_program()
self.failUnless(self.computer.memory['1'].value == 5)
def test_clear(self):
self.computer.load_program([
['load', [2, '1']],
['clear', ['1']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, 0)
def test_add(self):
self.computer.load_program([
['load', [2, '1']],
['add', [1, '1', '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['2'].value, 3)
self.failUnlessEqual(self.computer.memory['1'].value, 2)
def test_multiply(self):
self.computer.load_program([
['load', [2, '1']],
['multiply', [3, '1', '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['2'].value, 6)
self.failUnlessEqual(self.computer.memory['1'].value, 2)
def test_divide_no_remainder(self):
self.computer.load_program([
['load', [6, '1']],
['divide', ['1', 2, '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['2'].value, 3)
self.failUnlessEqual(self.computer.memory['1'].value, 6)
def test_divide_with_remainder(self):
self.computer.load_program([
['load', [7, '1']],
['divide', ['1', 2, '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['2'].value, 3)
self.failUnlessEqual(self.computer.memory['1'].value, 7)
def test_shift_left(self):
self.computer.load_program([
['load', [6, '1']],
['shift_left', ['1']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, 12)
def test_shift_right(self):
self.computer.load_program([
['load', [6, '1']],
['shift_right', ['1']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, 3)
def test_bit_or(self):
self.computer.load_program([
['load', [0b010101, '1']],
['load', [0b011111, '2']],
['bit_or', ['1', '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, 0b011111)
def test_bit_and(self):
self.computer.load_program([
['load', [0b010101, '1']],
['load', [0b011111, '2']],
['bit_and', ['1', '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, 0b010101)
def test_complement(self):
self.computer.load_program([
['load', [0b010101, '1']],
['complement', ['1']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, ~0b010101)
def test_bit_xor(self):
self.computer.load_program([
['load', [0b010101, '1']],
['load', [0b011111, '2']],
['bit_xor', ['1', '2']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['1'].value, 0b010101 ^ 0b011111)
def test_jump(self):
self.computer.load_program([
['jump', [2]],
['load', [1, '2']], # Should never run
['load', [2, '3']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['3'].value, 2)
self.failIfEqual(self.computer.memory['2'].value, 1)
def test_jump_if_neg_on_negative(self):
self.computer.load_program([
['load', [-1, '1']],
['jump_if_neg', ['1', 2]],
['load', [1, '2']], # Should never run
['load', [2, '3']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['3'].value, 2)
self.failIfEqual(self.computer.memory['2'].value, 1)
def test_jump_if_neg_on_positive(self):
self.computer.load_program([
['load', [5, '1']],
['jump_if_neg', ['1', 2]],
['load', [1, '2']], # Should run
['load', [2, '3']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['3'].value, 2)
self.failUnlessEqual(self.computer.memory['2'].value, 1)
def test_jump_if_pos_on_positive(self):
self.computer.load_program([
['load', [5, '1']],
['jump_if_pos', ['1', 2]],
['load', [1, '2']], # Should never run
['load', [2, '3']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['3'].value, 2)
self.failIfEqual(self.computer.memory['2'].value, 1)
def test_jump_if_pos_on_negative(self):
self.computer.load_program([
['load', [-1, '1']],
['jump_if_pos', ['1', 2]],
['load', [1, '2']], # Should run
['load', [2, '3']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['3'].value, 2)
self.failUnlessEqual(self.computer.memory['2'].value, 1)
def test_jump_if_eq_on_equal(self):
self.computer.load_program([
['load', [5, '1']],
['load', [5, '2']],
['jump_if_eq', ['1', '2', 2]],
['load', [1, '3']], # Should never run
['load', [2, '4']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['4'].value, 2)
self.failIfEqual(self.computer.memory['3'].value, 1)
def test_jump_if_eq_on_not_equal(self):
self.computer.load_program([
['load', [5, '1']],
['load', [4, '2']],
['jump_if_eq', ['1', '2', 2]],
['load', [1, '3']], # Should run
['load', [2, '4']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['4'].value, 2)
self.failUnlessEqual(self.computer.memory['3'].value, 1)
def test_push(self):
self.computer.load_program([
['load', [5, '1']],
['push', ['1']],
['push', [1]],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.stack[0], 5)
self.failUnlessEqual(self.computer.stack[1], 1)
def test_pop_with_non_empty_stack(self):
self.computer.load_program([
['load', [5, '1']],
['push', ['1']],
['push', [1]],
['pop', "3"],
['pop', "4"],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['4'].value, 5)
self.failUnlessEqual(self.computer.memory['3'].value, 1)
def test_pop_with_empty_stack(self):
self.computer.load_program([
['pop', "3"],
['pop', "4"],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.memory['4'].value, 0)
self.failUnlessEqual(self.computer.memory['3'].value, 0)
class TestProgramCounter(unittest.TestCase):
def setUp(self):
self.computer = Computer()
def test_pc_ends_with_correct_value(self):
self.computer.load_program([
['load', [-1, '1']],
['jump_if_pos', ['1', 2]],
['load', [1, '2']], # Should run
['load', [2, '3']],
])
self.computer.run_program()
self.failUnlessEqual(self.computer.pc, 4)
class TestInputLoading(unittest.TestCase):
def setUp(self):
self.computer = Computer()
def test_inputs_loaded(self):
self.computer.load_program([
['load', [-1, '1']],
['jump_if_pos', ['1', 2]],
['load', [1, '2']], # Should run
['load', [2, '3']],
], [5, 4, 3, 2, 1])
self.failUnlessEqual(self.computer.memory["0"].value, 5)
self.failUnlessEqual(self.computer.memory["4"].value, 1)
class TestOutputQueue(unittest.TestCase):
def setUp(self):
self.computer = Computer()
def test_queue_has_correct_values(self):
self.computer.load_program([
['print_mem', ['0']],
['print_char', ['0']],
], [33])
self.computer.run_program()
self.failUnlessEqual(self.computer.output_queue[0], 33)
self.failUnlessEqual(self.computer.output_queue[1], '!')
if __name__ == '__main__':
unittest.main()