Tirsvad
5e1067b4f3
MIL-002 Calculator core. - Add constants.py with operation symbols, answers, prompts, messages and the ASCII title and calculator - Add add, subtract, multiply and divide, and the OPERATIONS dictionary that maps each symbol to its function without calling it - Add tests for each operation, division by zero and the dictionary Closes #19 Closes #20 Closes #21 Task: MIL-002#1 Task: MIL-002#2 Task: MIL-002#3
34 lines
720 B
Python
34 lines
720 B
Python
"""!
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@file test_operations.py
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@brief Tests for the arithmetic operations.
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"""
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import pytest
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from calc.operations import OPERATIONS, add, divide, multiply, subtract
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def test_add_returns_sum() -> None:
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assert add(2, 3) == 5
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def test_subtract_returns_difference() -> None:
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assert subtract(2, 3) == -1
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def test_multiply_returns_product() -> None:
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assert multiply(4, 2.5) == 10
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def test_divide_returns_quotient() -> None:
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assert divide(9, 3) == 3
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def test_divide_when_divisor_is_zero() -> None:
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with pytest.raises(ZeroDivisionError):
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divide(1, 0)
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def test_operations_maps_symbols_to_functions() -> None:
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assert OPERATIONS == {"+": add, "-": subtract, "*": multiply, "/": divide}
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