Oli Sturm
52 lines
1.5 KiB
C#
52 lines
1.5 KiB
C#
using CsharpFp2.Domain;
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namespace CsharpFp2.Tests;
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/// Tests covering domain-layer invariants on the Account aggregate directly,
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/// independent of the application layer.
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public class AccountTests
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{
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[Fact]
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public void Opening_an_account_with_a_negative_balance_throws()
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{
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Assert.Throws<ArgumentOutOfRangeException>(() =>
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new Account(new AccountId(Guid.NewGuid()), new Money(-1m))
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);
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}
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[Fact]
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public void Withdrawing_a_zero_amount_throws()
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{
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var account = new Account(new AccountId(Guid.NewGuid()), new Money(100m));
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Assert.Throws<InvalidOperationException>(() => account.Withdraw(new Money(0m)));
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}
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[Fact]
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public void Withdrawing_a_negative_amount_throws()
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{
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var account = new Account(new AccountId(Guid.NewGuid()), new Money(100m));
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Assert.Throws<InvalidOperationException>(() => account.Withdraw(new Money(-10m)));
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}
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[Fact]
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public void Withdrawing_more_than_the_balance_throws()
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{
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var account = new Account(new AccountId(Guid.NewGuid()), new Money(100m));
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Assert.Throws<InsufficientBalanceException>(() => account.Withdraw(new Money(101m)));
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}
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[Fact]
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public void Successive_withdrawals_are_each_applied_to_the_running_balance()
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{
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var account = new Account(new AccountId(Guid.NewGuid()), new Money(300m));
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account.Withdraw(new Money(100m));
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account.Withdraw(new Money(100m));
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Assert.Equal(100m, account.Balance.Amount);
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}
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}
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