[PM-29224] Remove unused billing endpoints and code paths (#6692)

* Remove unused endpoints and code paths

* MOAR DELETE

* Run dotnet format

test/Core.Test/Billing/Services/SubscriberServiceTests.cs

@@ -328,157 +328,6 @@ public class SubscriberServiceTests
 
     #endregion
 
-    #region GetPaymentMethod
-
-    [Theory, BitAutoData]
-    public async Task GetPaymentMethod_NullSubscriber_ThrowsArgumentNullException(
-        SutProvider<SubscriberService> sutProvider) =>
-        await Assert.ThrowsAsync<ArgumentNullException>(() => sutProvider.Sut.GetPaymentSource(null));
-
-    [Theory, BitAutoData]
-    public async Task GetPaymentMethod_WithNegativeStripeAccountBalance_ReturnsCorrectAccountCreditAmount(Organization organization,
-        SutProvider<SubscriberService> sutProvider)
-    {
-        // Arrange
-        // Stripe reports balance in cents as a negative number for credit
-        const int stripeAccountBalance = -593; // $5.93 credit (negative cents)
-        const decimal creditAmount = 5.93M;    // Same value in dollars
-
-
-        var customer = new Customer
-        {
-            Balance = stripeAccountBalance,
-            Subscriptions = new StripeList<Subscription>()
-            {
-                Data =
-                [new Subscription { Id = organization.GatewaySubscriptionId, Status = "active" }]
-            },
-            InvoiceSettings = new CustomerInvoiceSettings
-            {
-                DefaultPaymentMethod = new PaymentMethod
-                {
-                    Type = StripeConstants.PaymentMethodTypes.USBankAccount,
-                    UsBankAccount = new PaymentMethodUsBankAccount { BankName = "Chase", Last4 = "9999" }
-                }
-            }
-        };
-        sutProvider.GetDependency<IStripeAdapter>().CustomerGetAsync(organization.GatewayCustomerId,
-                Arg.Is<CustomerGetOptions>(options => options.Expand.Contains("default_source") &&
-                                                      options.Expand.Contains("invoice_settings.default_payment_method")
-                                                      && options.Expand.Contains("subscriptions")
-                                                      && options.Expand.Contains("tax_ids")))
-            .Returns(customer);
-
-        // Act
-        var result = await sutProvider.Sut.GetPaymentMethod(organization);
-
-        // Assert
-        Assert.NotNull(result);
-        Assert.Equal(creditAmount, result.AccountCredit);
-        await sutProvider.GetDependency<IStripeAdapter>().Received(1).CustomerGetAsync(
-            organization.GatewayCustomerId,
-            Arg.Is<CustomerGetOptions>(options =>
-                options.Expand.Contains("default_source") &&
-                options.Expand.Contains("invoice_settings.default_payment_method") &&
-                options.Expand.Contains("subscriptions") &&
-                options.Expand.Contains("tax_ids")));
-
-    }
-
-    [Theory, BitAutoData]
-    public async Task GetPaymentMethod_WithZeroStripeAccountBalance_ReturnsCorrectAccountCreditAmount(
-        Organization organization, SutProvider<SubscriberService> sutProvider)
-    {
-        // Arrange
-        const int stripeAccountBalance = 0;
-
-        var customer = new Customer
-        {
-            Balance = stripeAccountBalance,
-            Subscriptions = new StripeList<Subscription>()
-            {
-                Data =
-                [new Subscription { Id = organization.GatewaySubscriptionId, Status = "active" }]
-            },
-            InvoiceSettings = new CustomerInvoiceSettings
-            {
-                DefaultPaymentMethod = new PaymentMethod
-                {
-                    Type = StripeConstants.PaymentMethodTypes.USBankAccount,
-                    UsBankAccount = new PaymentMethodUsBankAccount { BankName = "Chase", Last4 = "9999" }
-                }
-            }
-        };
-        sutProvider.GetDependency<IStripeAdapter>().CustomerGetAsync(organization.GatewayCustomerId,
-                Arg.Is<CustomerGetOptions>(options => options.Expand.Contains("default_source") &&
-                                                      options.Expand.Contains("invoice_settings.default_payment_method")
-                                                      && options.Expand.Contains("subscriptions")
-                                                      && options.Expand.Contains("tax_ids")))
-            .Returns(customer);
-
-        // Act
-        var result = await sutProvider.Sut.GetPaymentMethod(organization);
-
-        // Assert
-        Assert.NotNull(result);
-        Assert.Equal(0, result.AccountCredit);
-        await sutProvider.GetDependency<IStripeAdapter>().Received(1).CustomerGetAsync(
-            organization.GatewayCustomerId,
-            Arg.Is<CustomerGetOptions>(options =>
-                options.Expand.Contains("default_source") &&
-                options.Expand.Contains("invoice_settings.default_payment_method") &&
-                options.Expand.Contains("subscriptions") &&
-                options.Expand.Contains("tax_ids")));
-    }
-
-    [Theory, BitAutoData]
-    public async Task GetPaymentMethod_WithPositiveStripeAccountBalance_ReturnsCorrectAccountCreditAmount(
-        Organization organization, SutProvider<SubscriberService> sutProvider)
-    {
-        // Arrange
-        const int stripeAccountBalance = 593; // $5.93 charge balance
-        const decimal accountBalance = -5.93M;    // account balance
-        var customer = new Customer
-        {
-            Balance = stripeAccountBalance,
-            Subscriptions = new StripeList<Subscription>()
-            {
-                Data =
-                [new Subscription { Id = organization.GatewaySubscriptionId, Status = "active" }]
-            },
-            InvoiceSettings = new CustomerInvoiceSettings
-            {
-                DefaultPaymentMethod = new PaymentMethod
-                {
-                    Type = StripeConstants.PaymentMethodTypes.USBankAccount,
-                    UsBankAccount = new PaymentMethodUsBankAccount { BankName = "Chase", Last4 = "9999" }
-                }
-            }
-        };
-        sutProvider.GetDependency<IStripeAdapter>().CustomerGetAsync(organization.GatewayCustomerId,
-                Arg.Is<CustomerGetOptions>(options => options.Expand.Contains("default_source") &&
-                                                      options.Expand.Contains("invoice_settings.default_payment_method")
-                                                      && options.Expand.Contains("subscriptions")
-                                                      && options.Expand.Contains("tax_ids")))
-            .Returns(customer);
-
-        // Act
-        var result = await sutProvider.Sut.GetPaymentMethod(organization);
-
-        // Assert
-        Assert.NotNull(result);
-        Assert.Equal(accountBalance, result.AccountCredit);
-        await sutProvider.GetDependency<IStripeAdapter>().Received(1).CustomerGetAsync(
-            organization.GatewayCustomerId,
-            Arg.Is<CustomerGetOptions>(options =>
-                options.Expand.Contains("default_source") &&
-                options.Expand.Contains("invoice_settings.default_payment_method") &&
-                options.Expand.Contains("subscriptions") &&
-                options.Expand.Contains("tax_ids")));
-
-    }
-    #endregion
-
     #region GetPaymentSource
 
     [Theory, BitAutoData]
@@ -889,65 +738,6 @@ public class SubscriberServiceTests
     }
     #endregion
 
-    #region GetTaxInformation
-
-    [Theory, BitAutoData]
-    public async Task GetTaxInformation_NullSubscriber_ThrowsArgumentNullException(
-        SutProvider<SubscriberService> sutProvider) =>
-        await Assert.ThrowsAsync<ArgumentNullException>(() => sutProvider.Sut.GetTaxInformation(null));
-
-    [Theory, BitAutoData]
-    public async Task GetTaxInformation_NullAddress_ReturnsNull(
-        Organization organization,
-        SutProvider<SubscriberService> sutProvider)
-    {
-        sutProvider.GetDependency<IStripeAdapter>().CustomerGetAsync(organization.GatewayCustomerId, Arg.Any<CustomerGetOptions>())
-            .Returns(new Customer());
-
-        var taxInformation = await sutProvider.Sut.GetTaxInformation(organization);
-
-        Assert.Null(taxInformation);
-    }
-
-    [Theory, BitAutoData]
-    public async Task GetTaxInformation_Success(
-        Organization organization,
-        SutProvider<SubscriberService> sutProvider)
-    {
-        var address = new Address
-        {
-            Country = "US",
-            PostalCode = "12345",
-            Line1 = "123 Example St.",
-            Line2 = "Unit 1",
-            City = "Example Town",
-            State = "NY"
-        };
-
-        sutProvider.GetDependency<IStripeAdapter>().CustomerGetAsync(organization.GatewayCustomerId, Arg.Any<CustomerGetOptions>())
-            .Returns(new Customer
-            {
-                Address = address,
-                TaxIds = new StripeList<TaxId>
-                {
-                    Data = [new TaxId { Value = "tax_id" }]
-                }
-            });
-
-        var taxInformation = await sutProvider.Sut.GetTaxInformation(organization);
-
-        Assert.NotNull(taxInformation);
-        Assert.Equal(address.Country, taxInformation.Country);
-        Assert.Equal(address.PostalCode, taxInformation.PostalCode);
-        Assert.Equal("tax_id", taxInformation.TaxId);
-        Assert.Equal(address.Line1, taxInformation.Line1);
-        Assert.Equal(address.Line2, taxInformation.Line2);
-        Assert.Equal(address.City, taxInformation.City);
-        Assert.Equal(address.State, taxInformation.State);
-    }
-
-    #endregion
-
     #region RemovePaymentMethod
     [Theory, BitAutoData]
     public async Task RemovePaymentMethod_NullSubscriber_ThrowsArgumentNullException(
@@ -1844,48 +1634,6 @@ public class SubscriberServiceTests
 
     #endregion
 
-    #region VerifyBankAccount
-
-    [Theory, BitAutoData]
-    public async Task VerifyBankAccount_NoSetupIntentId_ThrowsBillingException(
-        Provider provider,
-        SutProvider<SubscriberService> sutProvider) => await ThrowsBillingExceptionAsync(() => sutProvider.Sut.VerifyBankAccount(provider, ""));
-
-    [Theory, BitAutoData]
-    public async Task VerifyBankAccount_MakesCorrectInvocations(
-        Provider provider,
-        SutProvider<SubscriberService> sutProvider)
-    {
-        const string descriptorCode = "SM1234";
-
-        var setupIntent = new SetupIntent
-        {
-            Id = "setup_intent_id",
-            PaymentMethodId = "payment_method_id"
-        };
-
-        sutProvider.GetDependency<ISetupIntentCache>().GetSetupIntentIdForSubscriber(provider.Id).Returns(setupIntent.Id);
-
-        var stripeAdapter = sutProvider.GetDependency<IStripeAdapter>();
-
-        stripeAdapter.SetupIntentGet(setupIntent.Id).Returns(setupIntent);
-
-        await sutProvider.Sut.VerifyBankAccount(provider, descriptorCode);
-
-        await stripeAdapter.Received(1).SetupIntentVerifyMicroDeposit(setupIntent.Id,
-            Arg.Is<SetupIntentVerifyMicrodepositsOptions>(
-                options => options.DescriptorCode == descriptorCode));
-
-        await stripeAdapter.Received(1).PaymentMethodAttachAsync(setupIntent.PaymentMethodId,
-            Arg.Is<PaymentMethodAttachOptions>(
-                options => options.Customer == provider.GatewayCustomerId));
-
-        await stripeAdapter.Received(1).CustomerUpdateAsync(provider.GatewayCustomerId, Arg.Is<CustomerUpdateOptions>(
-            options => options.InvoiceSettings.DefaultPaymentMethod == setupIntent.PaymentMethodId));
-    }
-
-    #endregion
-
     #region IsValidGatewayCustomerIdAsync
 
     [Theory, BitAutoData]