Add Tests for PR#1248

[codecov-ai]

This PR adds tests for #1248

Commits:

• Add unit tests for BankAccountManager class

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.72%. Comparing base (8240025) to head (4a92d01).

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@                        Coverage Diff                         @@
##           ai-tests-for-pr1247-1743006409    #1249      +/-   ##
==================================================================
+ Coverage                           95.48%   95.72%   +0.24%     
==================================================================
  Files                                 494      494              
  Lines                               16992    16992              
==================================================================
+ Hits                                16224    16266      +42     
+ Misses                                768      726      -42     

Flag	Coverage Δ
unit	95.72% <ø> (+0.24%)	⬆️

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Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

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[rohitvinnakota-codecov]

@codecov-ai-reviewer review

[codecov-ai]

On it! We are reviewing the PR and will provide feedback shortly.

[codecov-ai]

Consider adding test class docstring to describe the purpose and scope of these tests. This helps other developers understand what's being tested and any specific setup requirements.

Suggested change

	class TestBankAccountManager(unittest.TestCase):
	class TestBankAccountManager(unittest.TestCase):
	"""Test suite for BankAccountManager class.
	Tests account creation, monetary operations (deposit, withdraw, transfer),
	and account management functionality.
	"""

[codecov-ai]

The setUp method should handle potential exceptions during account creation. Also, consider adding a tearDown method to clean up any resources or state between tests.

Suggested change

	class TestBankAccountManager(unittest.TestCase):
	def setUp(self):
	self.manager = BankAccountManager()
	self.account_id = self.manager.create_account("Test User")
	def setUp(self):
	try:
	self.manager = BankAccountManager()
	self.account_id = self.manager.create_account("Test User")
	except Exception as e:
	self.fail(f"Failed to set up test case: {str(e)}")
	def tearDown(self):
	# Clean up any test accounts
	if hasattr(self, 'account_id'):
	self.manager.delete_account(self.account_id)

[codecov-ai]

The deposit tests should include additional edge cases such as floating-point precision issues and very large numbers. Also consider testing type validation for non-numeric inputs.

Suggested change

	def test_deposit_valid_amount(self):
	"""Test depositing a valid amount into an account."""
	new_balance = self.manager.deposit(self.account_id, 100.0)
	self.assertEqual(new_balance, 100.0)
	self.assertEqual(self.manager.accounts[self.account_id]['balance'], 100.0)
	# Verify transaction was recorded
	transactions = self.manager.accounts[self.account_id]['transactions']
	self.assertEqual(len(transactions), 1)
	self.assertEqual(transactions[0]['type'], 'deposit')
	self.assertEqual(transactions[0]['amount'], 100.0)
	self.assertIsInstance(transactions[0]['timestamp'], datetime)
	def test_deposit_multiple_amounts(self):
	"""Test multiple deposits into an account."""
	self.manager.deposit(self.account_id, 100.0)
	new_balance = self.manager.deposit(self.account_id, 50.0)
	self.assertEqual(new_balance, 150.0)
	self.assertEqual(len(self.manager.accounts[self.account_id]['transactions']), 2)
	def test_deposit_edge_cases(self):
	"""Test edge cases for deposit functionality."""
	# Test floating point precision
	balance = self.manager.deposit(self.account_id, 0.1 + 0.2)
	self.assertAlmostEqual(balance, 0.3, places=7)
	# Test very large numbers
	large_amount = 1e15
	balance = self.manager.deposit(self.account_id, large_amount)
	self.assertEqual(balance, large_amount)
	# Test non-numeric input
	with self.assertRaises(TypeError):
	self.manager.deposit(self.account_id, "100")

[codecov-ai]

The transfer_between_accounts test should verify the transaction history of both accounts and ensure the transfer is atomic. Also add tests for concurrent transfers.

Suggested change

	self.assertIn("Withdrawal amount must be positive", str(context.exception))
	def test_transfer_between_accounts(self):
	"""Test transferring money between two accounts."""
	second_account_id = self.manager.create_account("Second User")
	self.manager.deposit(self.account_id, 100.0)
	result = self.manager.transfer(self.account_id, second_account_id, 50.0)
	self.assertTrue(result)
	def test_transfer_between_accounts(self):
	"""Test transferring money between two accounts."""
	second_account_id = self.manager.create_account("Second User")
	self.manager.deposit(self.account_id, 100.0)
	result = self.manager.transfer(self.account_id, second_account_id, 50.0)
	self.assertTrue(result)
	# Verify balances
	self.assertEqual(self.manager.get_balance(self.account_id), 50.0)
	self.assertEqual(self.manager.get_balance(second_account_id), 50.0)
	# Verify transaction history
	source_history = self.manager.get_transaction_history(self.account_id)
	dest_history = self.manager.get_transaction_history(second_account_id)
	self.assertEqual(source_history[-1]['type'], 'transfer_out')
	self.assertEqual(dest_history[-1]['type'], 'transfer_in')
	self.assertEqual(source_history[-1]['amount'], 50.0)
	self.assertEqual(dest_history[-1]['amount'], 50.0)

[codecov-ai]

Add tests for account ID validation to ensure the system handles non-existent or invalid account IDs appropriately.

Suggested change

	self.assertEqual(history[0]['type'], 'deposit')
	self.assertEqual(history[1]['type'], 'withdrawal')
	def test_delete_account(self):
	"""Test that an account can be deleted."""
	result = self.manager.delete_account(self.account_id)
	self.assertTrue(result)
	self.assertNotIn(self.account_id, self.manager.accounts)
	def test_invalid_account_operations(self):
	"""Test operations with invalid or non-existent account IDs."""
	non_existent_id = "invalid-uuid"
	with self.assertRaises(ValueError) as context:
	self.manager.get_balance(non_existent_id)
	self.assertIn("Account not found", str(context.exception))
	with self.assertRaises(ValueError) as context:
	self.manager.deposit(non_existent_id, 100.0)
	self.assertIn("Account not found", str(context.exception))

[codecov-ai]

Consider adding tests for race conditions and thread safety, especially for operations that modify account balances. This is crucial for a banking system.

Suggested change

	import unittest
	from datetime import datetime
	import threading
	import unittest
	from datetime import datetime
	from unittest.mock import patch
	class TestBankAccountManagerConcurrency(unittest.TestCase):
	def test_concurrent_deposits(self):
	"""Test concurrent deposits to the same account."""
	manager = BankAccountManager()
	account_id = manager.create_account("Test User")
	def deposit_amount():
	manager.deposit(account_id, 100.0)
	threads = [threading.Thread(target=deposit_amount) for _ in range(10)]
	for t in threads:
	t.start()
	for t in threads:
	t.join()
	self.assertEqual(manager.get_balance(account_id), 1000.0)

[codecov-ai]

The test suite should include performance tests for large numbers of transactions and accounts. Consider using pytest-benchmark or similar tools for this purpose.

Suggested change

	class TestBankAccountManager(unittest.TestCase):
	@pytest.mark.benchmark
	def test_account_performance(self, benchmark):
	"""Test performance of account operations."""
	def create_and_operate():
	manager = BankAccountManager()
	account_id = manager.create_account("Test User")
	for _ in range(1000):
	manager.deposit(account_id, 100.0)
	manager.withdraw(account_id, 50.0)
	benchmark(create_and_operate)

[codecov-ai]

Add tests for transaction timestamp ordering and integrity. Ensure that timestamps are monotonically increasing and accurate.

Suggested change

	with self.assertRaises(ValueError) as context:
	self.manager.transfer(self.account_id, self.account_id, 50.0)
	self.assertIn("Cannot transfer to the same account", str(context.exception))
	def test_get_transaction_history(self):
	"""Test retrieving transaction history for an account."""
	self.manager.deposit(self.account_id, 100.0)
	self.manager.withdraw(self.account_id, 50.0)
	history = self.manager.get_transaction_history(self.account_id)
	self.assertEqual(len(history), 2)
	def test_transaction_timestamp_ordering(self):
	"""Test that transaction timestamps are ordered correctly."""
	self.manager.deposit(self.account_id, 100.0)
	self.manager.withdraw(self.account_id, 50.0)
	history = self.manager.get_transaction_history(self.account_id)
	self.assertTrue(history[0]['timestamp'] < history[1]['timestamp'])
	# Verify timestamp is recent
	now = datetime.now()
	self.assertLess((now - history[-1]['timestamp']).total_seconds(), 1)