| import pytest |
| from solution import BankAccount, InsufficientFunds |
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| @pytest.fixture |
| def acc(): |
| return BankAccount("Ayşe", 100) |
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| def test_init_strips_owner_and_sets_balance(): |
| a = BankAccount(" Ali ", 50, overdraft_limit=20) |
| assert a.owner == "Ali" and a.balance == 50.0 and a.overdraft_limit == 20.0 |
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| @pytest.mark.parametrize("args", [("", 0), (" ", 0), ("Ali", -1), ("Ali", 0, -5)]) |
| def test_init_rejects_invalid(args): |
| with pytest.raises(ValueError): |
| BankAccount(*args) |
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| def test_deposit_increases_balance(acc): |
| assert acc.deposit(25) == 125 |
| assert acc.history == [("deposit", 25)] |
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| @pytest.mark.parametrize("amount", [0, -10]) |
| def test_deposit_rejects_non_positive(acc, amount): |
| with pytest.raises(ValueError): |
| acc.deposit(amount) |
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| def test_withdraw_within_balance(acc): |
| assert acc.withdraw(40) == 60 |
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| def test_withdraw_uses_overdraft_up_to_limit(): |
| a = BankAccount("Can", 10, overdraft_limit=50) |
| assert a.withdraw(60) == -50 |
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| def test_withdraw_beyond_limit_raises(): |
| a = BankAccount("Can", 10, overdraft_limit=50) |
| with pytest.raises(InsufficientFunds): |
| a.withdraw(60.01) |
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| def test_withdraw_rejects_non_positive(acc): |
| with pytest.raises(ValueError): |
| acc.withdraw(0) |
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| def test_transfer_moves_money(acc): |
| other = BankAccount("Veli") |
| acc.transfer(other, 30) |
| assert (acc.balance, other.balance) == (70, 30) |
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| def test_transfer_to_self_rejected(acc): |
| with pytest.raises(ValueError): |
| acc.transfer(acc, 10) |
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| def test_interest_on_positive_balance(acc): |
| assert acc.apply_interest(0.1) == 110 |
| assert acc.history[-1] == ("interest", 10.0) |
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| def test_no_interest_on_negative_balance(): |
| a = BankAccount("Can", 0, overdraft_limit=100) |
| a.withdraw(50) |
| assert a.apply_interest(0.5) == -50 |
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| @pytest.mark.parametrize("rate", [-0.1, 1.5]) |
| def test_interest_rate_bounds(acc, rate): |
| with pytest.raises(ValueError): |
| acc.apply_interest(rate) |
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| def test_statement_lists_history(acc): |
| acc.deposit(5) |
| acc.withdraw(10) |
| text = acc.statement() |
| assert text.splitlines()[0] == "Hesap sahibi: Ayşe" |
| assert "withdraw -10.00" in text |
| assert text.endswith("Bakiye: 95.00") |
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|
