Developer.Implement chain for #50

[desjoerd-test-bot]

Write the code to test the basic calculator functionality

[desjoerd-test-bot]

Sure! Here's an example of a bash script that creates the necessary files and tests the basic calculator functionality using the Domain-Driven Design (DDD) approach:

#!/bin/bash

# Create the necessary files
touch calculator.py
touch test_calculator.py

# Implement the basic calculator functionality in calculator.py
cat << EOF > calculator.py
class Calculator:
    def add(self, a, b):
        return a + b

    def subtract(self, a, b):
        return a - b

    def multiply(self, a, b):
        return a * b

    def divide(self, a, b):
        return a / b if b != 0 else None
EOF

# Implement tests for the calculator functionality in test_calculator.py
cat << EOF > test_calculator.py
import unittest
from calculator import Calculator

class TestCalculator(unittest.TestCase):
    def setUp(self):
        self.calculator = Calculator()

    def test_add(self):
        result = self.calculator.add(3, 4)
        self.assertEqual(result, 7)

    def test_subtract(self):
        result = self.calculator.subtract(10, 5)
        self.assertEqual(result, 5)

    def test_multiply(self):
        result = self.calculator.multiply(2, 3)
        self.assertEqual(result, 6)

    def test_divide(self):
        result = self.calculator.divide(10, 2)
        self.assertEqual(result, 5)

        result = self.calculator.divide(10, 0)
        self.assertIsNone(result)

if __name__ == '__main__':
    unittest.main()
EOF

# Run the tests
python test_calculator.py

This script creates two files: calculator.py and test_calculator.py. The calculator.py file contains the implementation of the basic calculator functionality using the Calculator class. The test_calculator.py file contains the unit tests for the calculator functionality using the unittest framework.

To run the script, save it to a file (e.g., calculator_test.sh), make it executable (chmod +x calculator_test.sh), and then run it (./calculator_test.sh). The script will create the files and execute the tests using the python command.

Note: This script assumes that Python is installed on the system and accessible via the python command.