fix: tax code matcher QA (#680)

* feat: ✨ bring back validateAddress in TaxJar

* feat: 💄 decrease marginLeft of AppToggle label

* refactor: 🚚 cancelButton -> leftButton

* feat: 🧱 add data-testid to all buttons and forms

* refactor: ♻️ refactor app-section to accept Box props

* feat: 🧱 add rest of data-testid

* feat: ✨ verify connections before displaying matcher pages

* feat: ✨ always display matcher-section

* refactor: ♻️ improve fetching tax codes by adding retry and redirect on error

* refactor: 🚚 active-connection -> get-active-connection-service && improve logs

* chore: 🔊 remove objects from logs

* docs: 📝 add TESTING.md with edge-cases

apps/taxes/TESTING.md

@@ -0,0 +1,37 @@
+# Testing
+
+The difficulty in testing the Taxes App lies in learning about the tax providers themselves. This document will attempt to outline the various edge-cases you can encounter while interacting with the Taxes App. It will be updated as we learn more about the various tax providers.
+
+## TaxJar
+
+### UI
+
+#### 1. Throws "invalid credentials" error while creating a provider
+
+If you are using the sandbox token, make sure to check the "Sandbox mode" checkbox in the Taxes App UI.
+
+### Calculating taxes
+
+#### 1. Transaction doesn't appear in TaxJar
+
+[It can take up to an hour for TaxJar to process the transaction](https://support.taxjar.com/article/643-why-are-my-transactions-not-appearing-in-taxjar). Please check again after some time.
+
+If that's not the case, make sure you are using the live token, as the sandbox token does not send transactions to TaxJar.
+
+#### 2. Taxes App returns taxes = 0
+
+Here are known reasons for why the Taxes App may returns taxes = 0 while calculating taxes:
+
+1. The sales tax in this state is 0. You can check it [here](https://www.taxjar.com/resources/sales-tax/states).
+2. You don't have a nexus in this state. Read up on Nexus [here](https://www.taxjar.com/sales-tax/nexus).
+3. The customer address in Saleor is invalid. We validate the "ship from" address, but we can't validate the customer address. If you are using a fake database, the generated addresses may be non-existant. You can find examples of valid addresses [here](https://developers.taxjar.com/demo/).
+4. TaxJar does not respond.
+5. Taxes App broke.
+
+## Avatax
+
+### UI
+
+#### 1. Taxes App UI throws "invalid credentials" error while creating a provider
+
+If you are using the sandbox token, make sure to check the "Sandbox mode" checkbox in the Taxes App UI.

apps/taxes/src/modules/avatax/avatax-connection.router.ts

@@ -35,6 +35,19 @@ const protectedWithConfigurationService = protectedClientProcedure.use(({ next,
 );
 
 export const avataxConnectionRouter = router({
+  verifyConnections: protectedWithConfigurationService.query(async ({ ctx }) => {
+    const logger = createLogger({
+      name: "avataxConnectionRouter.verifyConnections",
+    });
+
+    logger.debug("Route verifyConnections called");
+
+    await ctx.connectionService.verifyConnections();
+
+    logger.info("Avatax connections were successfully verified");
+
+    return { ok: true };
+  }),
   getById: protectedWithConfigurationService.input(getInputSchema).query(async ({ ctx, input }) => {
     const logger = createLogger({
       name: "avataxConnectionRouter.get",

apps/taxes/src/modules/avatax/configuration/public-avatax-connection.service.ts

@@ -35,4 +35,12 @@ export class PublicAvataxConnectionService {
   async delete(id: string) {
     return this.connectionService.delete(id);
   }
+
+  async verifyConnections() {
+    const connections = await this.connectionService.getAll();
+
+    if (connections.length === 0) {
+      throw new Error("No Avatax connections found");
+    }
+  }
 }

apps/taxes/src/modules/avatax/ui/avatax-configuration-form.tsx

@@ -22,7 +22,7 @@ type AvataxConfigurationFormProps = {
   onSubmit: (data: AvataxConfig) => void;
   defaultValues: AvataxConfig;
   isLoading: boolean;
-  cancelButton: React.ReactNode;
+  leftButton: React.ReactNode;
 };
 
 export const AvataxConfigurationForm = (props: AvataxConfigurationFormProps) => {
@@ -48,7 +48,7 @@ export const AvataxConfigurationForm = (props: AvataxConfigurationFormProps) =>
         <ProviderLabel name="avatax" />
       </Box>
 
-      <form onSubmit={handleSubmit(submitHandler)}>
+      <form onSubmit={handleSubmit(submitHandler)} data-testid="avatax-configuration-form">
         <Input
           control={control}
           name="name"
@@ -211,9 +211,14 @@ export const AvataxConfigurationForm = (props: AvataxConfigurationFormProps) =>
         <Divider marginY={8} />
 
         <Box display={"flex"} justifyContent={"space-between"} alignItems={"center"}>
-          {props.cancelButton}
+          {props.leftButton}
 
-          <Button disabled={props.isLoading} type="submit" variant="primary">
+          <Button
+            disabled={props.isLoading}
+            type="submit"
+            variant="primary"
+            data-testid="avatax-configuration-save-button"
+          >
             {props.isLoading ? "Saving..." : "Save"}
           </Button>
         </Box>

apps/taxes/src/modules/avatax/ui/avatax-tax-code-matcher-table.tsx

@@ -5,10 +5,46 @@ import { Table } from "../../ui/table";
 import { Select } from "../../ui/_select";
 import { Box, Text } from "@saleor/macaw-ui/next";
 import { AppCard } from "../../ui/app-card";
+import { useRouter } from "next/router";
+
+const useGetTaxCodes = () => {
+  const { data: providers } = trpcClient.providersConfiguration.getAll.useQuery();
+  const { notifyError } = useDashboardNotification();
+  const router = useRouter();
+
+  /*
+   * Tax Code Matcher is only available when there is at least one connection.
+   * The reason for it is that we need any working credentials to fetch the provider tax codes.
+   */
+  const firstConnectionId = providers?.[0].id;
+
+  const result = trpcClient.avataxTaxCodes.getAllForId.useQuery(
+    {
+      connectionId: firstConnectionId!,
+    },
+    {
+      enabled: firstConnectionId !== undefined,
+      // Retry once, because it's possible we may get a timeout for such a big request.
+      retry: 1,
+    }
+  );
+
+  React.useEffect(() => {
+    if (result.error) {
+      notifyError("Error", "Unable to fetch Avatax tax codes.");
+      setTimeout(() => {
+        router.push("/configuration");
+      }, 1000);
+    }
+  }, [notifyError, result.error, router]);
+
+  return result;
+};
 
 const SelectTaxCode = ({ taxClassId }: { taxClassId: string }) => {
   const [value, setValue] = React.useState("");
   const { notifySuccess, notifyError } = useDashboardNotification();
+  const { data: taxCodes = [], isLoading: isCodesLoading } = useGetTaxCodes();
 
   const { data: avataxMatches, isLoading: isMatchesLoading } =
     trpcClient.avataxMatches.getAll.useQuery();
@@ -32,24 +68,6 @@ const SelectTaxCode = ({ taxClassId }: { taxClassId: string }) => {
     },
   });
 
-  const { data: providers } = trpcClient.providersConfiguration.getAll.useQuery();
-
-  /*
-   * Tax Code Matcher is only available when there is at least one connection.
-   * The reason for it is that we need any working credentials to fetch the provider tax codes.
-   */
-  const firstConnectionId = providers?.[0].id;
-
-  const { data: taxCodes = [], isLoading: isCodesLoading } =
-    trpcClient.avataxTaxCodes.getAllForId.useQuery(
-      {
-        connectionId: firstConnectionId!,
-      },
-      {
-        enabled: firstConnectionId !== undefined,
-      }
-    );
-
   const changeValue = (avataxTaxCode: string) => {
     setValue(avataxTaxCode);
     updateMutation({

apps/taxes/src/modules/avatax/ui/create-avatax-configuration.tsx

@@ -37,8 +37,12 @@ export const CreateAvataxConfiguration = () => {
       isLoading={isCreateLoading}
       onSubmit={submitHandler}
       defaultValues={defaultAvataxConfig}
-      cancelButton={
+      leftButton={
-        <Button onClick={() => router.push("/configuration")} variant="tertiary">
+        <Button
+          onClick={() => router.push("/configuration")}
+          variant="tertiary"
+          data-testid="create-avatax-cancel-button"
+        >
           Cancel
         </Button>
       }

apps/taxes/src/modules/avatax/ui/edit-avatax-configuration.tsx

@@ -96,8 +96,8 @@ export const EditAvataxConfiguration = () => {
       isLoading={isPatchLoading}
       onSubmit={submitHandler}
       defaultValues={data.config}
-      cancelButton={
+      leftButton={
-        <Button onClick={deleteHandler} variant="error">
+        <Button onClick={deleteHandler} variant="error" data-testid="delete-avatax-button">
           Delete provider
         </Button>
       }

apps/taxes/src/modules/channel-configuration/ui/channel-list.tsx

@@ -21,7 +21,9 @@ const NoChannelConfigured = () => {
       justifyContent={"center"}
     >
       <Text variant="body">No channels configured yet</Text>
-      <Button onClick={redirectToTaxes}>Configure channels</Button>
+      <Button data-testid="configure-channel-button" onClick={redirectToTaxes}>
+        Configure channels
+      </Button>
     </Box>
   );
 };
@@ -43,7 +45,7 @@ export const ChannelList = () => {
   const isEmpty = isFetched && !isAnyChannelConfigured;
 
   return (
-    <AppCard __minHeight={"320px"} height="100%">
+    <AppCard __minHeight={"320px"} height="100%" data-testid="channel-list">
       {isFetching ? (
         <Skeleton />
       ) : (

apps/taxes/src/modules/channel-configuration/ui/channel-section.tsx

@@ -6,6 +6,7 @@ const Intro = () => {
   return (
     <Section.Description
       title="Available channels"
+      data-testid="channel-intro"
       description={
         <>
           This table displays all the channels configured to use the tax app as the tax calculation
@@ -13,7 +14,10 @@ const Intro = () => {
           <br />
           <br />
           You can change the tax configuration method for each channel in the{" "}
-          <AppDashboardLink href="/taxes/channels">Configuration → Taxes</AppDashboardLink> view.
+          <AppDashboardLink data-testid="configuration-taxes-text-link" href="/taxes/channels">
+            Configuration → Taxes
+          </AppDashboardLink>{" "}
+          view.
         </>
       }
     />

apps/taxes/src/modules/provider-connections/ui/providers-list.tsx

@@ -17,7 +17,9 @@ const AddProvider = () => {
       justifyContent={"center"}
     >
       <Text variant="body">No providers configured yet</Text>
-      <Button onClick={() => router.push("/providers")}>Add first provider</Button>
+      <Button data-testid="no-providers-list-add-button" onClick={() => router.push("/providers")}>
+        Add first provider
+      </Button>
     </Box>
   );
 };
@@ -40,7 +42,7 @@ export const ProvidersList = () => {
   const isNoResult = isFetched && !isProvider;
 
   return (
-    <AppCard __minHeight={"320px"} height="100%">
+    <AppCard __minHeight={"320px"} height="100%" data-testid="providers-list">
       {isFetching ? (
         <Skeleton />
       ) : (
@@ -55,7 +57,12 @@ export const ProvidersList = () => {
             >
               <ProvidersTable />
               <Box display={"flex"} justifyContent={"flex-end"}>
-                <Button onClick={() => router.push("/providers")}>Add new</Button>
+                <Button
+                  data-testid="providers-list-add-button"
+                  onClick={() => router.push("/providers")}
+                >
+                  Add new
+                </Button>
               </Box>
             </Box>
           )}

apps/taxes/src/modules/provider-connections/ui/providers-section.tsx

@@ -6,6 +6,7 @@ const Intro = () => {
   return (
     <Section.Description
       title="Tax providers"
+      data-testid="providers-intro"
       description={
         <>
           Saleor offers two ways of calculating taxes: flat or dynamic rates.

apps/taxes/src/modules/taxes/get-active-connection-service.test.ts

@@ -3,7 +3,7 @@ import { describe, expect, it, vi } from "vitest";
 import { MetadataItem } from "../../../generated/graphql";
 import { ChannelsConfig } from "../channel-configuration/channel-config";
 import { ProviderConnections } from "../provider-connections/provider-connections";
-import { getActiveConnection } from "./active-connection";
+import { getActiveConnectionService } from "./get-active-connection-service";
 import { AuthData } from "@saleor/app-sdk/APL";
 
 const mockedInvalidMetadata: MetadataItem[] = [
@@ -95,22 +95,22 @@ const mockedAuthData: AuthData = {
 
 vi.stubEnv("SECRET_KEY", mockedSecretKey);
 
-describe("getActiveConnection", () => {
+describe("getActiveConnectionService", () => {
   it("throws error when channel slug is missing", () => {
-    expect(() => getActiveConnection("", mockedInvalidMetadata, mockedAuthData)).toThrow(
+    expect(() => getActiveConnectionService("", mockedInvalidMetadata, mockedAuthData)).toThrow(
       "Channel slug was not found in the webhook payload"
     );
   });
 
   it("throws error when there are no metadata items", () => {
-    expect(() => getActiveConnection("default-channel", [], mockedAuthData)).toThrow(
+    expect(() => getActiveConnectionService("default-channel", [], mockedAuthData)).toThrow(
       "App encryptedMetadata was not found in the webhook payload"
     );
   });
 
   it("throws error when no providerConnectionId was found", () => {
     expect(() =>
-      getActiveConnection(
+      getActiveConnectionService(
         "default-channel",
         [
           {
@@ -129,7 +129,7 @@ describe("getActiveConnection", () => {
 
   it("throws error when no channel was found for channelSlug", () => {
     expect(() =>
-      getActiveConnection(
+      getActiveConnectionService(
         "invalid-channel",
         [
           {
@@ -147,7 +147,7 @@ describe("getActiveConnection", () => {
   });
 
   it("returns provider when data is correct", () => {
-    const result = getActiveConnection(
+    const result = getActiveConnectionService(
       "default-channel",
       [
         {

apps/taxes/src/modules/taxes/get-active-connection-service.ts

@@ -14,13 +14,13 @@ import { TaxJarWebhookService } from "../taxjar/taxjar-webhook.service";
 import { ProviderWebhookService } from "./tax-provider-webhook";
 
 // todo: refactor to a factory
-export class ActiveTaxProvider implements ProviderWebhookService {
+class ActiveTaxProviderService implements ProviderWebhookService {
   private logger: Logger;
   private client: TaxJarWebhookService | AvataxWebhookService;
 
   constructor(providerConnection: ProviderConnection, private authData: AuthData) {
     this.logger = createLogger({
-      name: "ActiveTaxProvider",
+      name: "ActiveTaxProviderService",
     });
 
     const taxProviderName = providerConnection.provider;
@@ -57,13 +57,13 @@ export class ActiveTaxProvider implements ProviderWebhookService {
   }
 }
 
-export function getActiveConnection(
+export function getActiveConnectionService(
   channelSlug: string | undefined,
   encryptedMetadata: MetadataItem[],
   authData: AuthData
-): ActiveTaxProvider {
+): ActiveTaxProviderService {
   const logger = createLogger({
-    name: "getActiveConnection",
+    name: "getActiveConnectionService",
   });
 
   if (!channelSlug) {
@@ -100,7 +100,7 @@ export function getActiveConnection(
     throw new Error(`Channel config providerConnectionId does not match any providers`);
   }
 
-  const taxProvider = new ActiveTaxProvider(providerConnection, authData);
+  const taxProvider = new ActiveTaxProviderService(providerConnection, authData);
 
   return taxProvider;
 }

apps/taxes/src/modules/taxjar/configuration/public-taxjar-connection.service.ts

@@ -35,4 +35,12 @@ export class PublicTaxJarConnectionService {
   async delete(id: string) {
     return this.connectionService.delete(id);
   }
+
+  async verifyConnections() {
+    const connections = await this.connectionService.getAll();
+
+    if (connections.length === 0) {
+      throw new Error("No TaxJar connections found");
+    }
+  }
 }

apps/taxes/src/modules/taxjar/taxjar-client.ts

@@ -47,12 +47,11 @@ export class TaxJarClient {
   }
 
   /**
-   * TaxJar validateAddress doesn't work. It's turned off for now.
+   * In the past, we've had some problems with TaxJar validateAddress. It looks like it works now, but we should keep an eye on it.
    * @see https://github.com/taxjar/taxjar-node/issues/70
-   * @todo Revisit this when TaxJar fixes the issue. Alternatively, create a custom validation.
    */
   async validateAddress({ params }: ValidateAddressArgs) {
-    // return this.client.validateAddress(params);
+    return this.client.validateAddress(params);
   }
 
   async getTaxCodes() {

apps/taxes/src/modules/taxjar/taxjar-connection.router.ts

@@ -35,6 +35,19 @@ const protectedWithConfigurationService = protectedClientProcedure.use(({ next,
 );
 
 export const taxjarConnectionRouter = router({
+  verifyConnections: protectedWithConfigurationService.query(async ({ ctx }) => {
+    const logger = createLogger({
+      name: "taxjarConnectionRouter.verifyConnections",
+    });
+
+    logger.debug("Route verifyConnections called");
+
+    await ctx.connectionService.verifyConnections();
+
+    logger.info("TaxJar connections were successfully verified");
+
+    return { ok: true };
+  }),
   getById: protectedWithConfigurationService.input(getInputSchema).query(async ({ ctx, input }) => {
     const logger = createLogger({
       name: "taxjarConnectionRouter.get",

apps/taxes/src/modules/taxjar/ui/create-taxjar-configuration.tsx

@@ -37,8 +37,12 @@ export const CreateTaxJarConfiguration = () => {
       isLoading={isCreateLoading}
       onSubmit={submitHandler}
       defaultValues={defaultTaxJarConfig}
-      cancelButton={
+      leftButton={
-        <Button onClick={() => router.push("/configuration")} variant="tertiary">
+        <Button
+          onClick={() => router.push("/configuration")}
+          variant="tertiary"
+          data-testid="create-taxjar-cancel-button"
+        >
           Cancel
         </Button>
       }

apps/taxes/src/modules/taxjar/ui/edit-taxjar-configuration.tsx

@@ -95,8 +95,8 @@ export const EditTaxJarConfiguration = () => {
       isLoading={isPatchLoading}
       onSubmit={submitHandler}
       defaultValues={data.config}
-      cancelButton={
+      leftButton={
-        <Button onClick={deleteHandler} variant="error">
+        <Button onClick={deleteHandler} variant="error" data-testid="delete-taxjar-button">
           Delete provider
         </Button>
       }

apps/taxes/src/modules/taxjar/ui/taxjar-configuration-form.tsx

@@ -23,7 +23,7 @@ type TaxJarConfigurationFormProps = {
   onSubmit: (data: TaxJarConfig) => void;
   defaultValues: TaxJarConfig;
   isLoading: boolean;
-  cancelButton: React.ReactNode;
+  leftButton: React.ReactNode;
 };
 
 export const TaxJarConfigurationForm = (props: TaxJarConfigurationFormProps) => {
@@ -49,7 +49,7 @@ export const TaxJarConfigurationForm = (props: TaxJarConfigurationFormProps) =>
         <ProviderLabel name="taxjar" />
       </Box>
 
-      <form onSubmit={handleSubmit(submitHandler)}>
+      <form onSubmit={handleSubmit(submitHandler)} data-testid="taxjar-configuration-form">
         <Input
           control={control}
           name="name"
@@ -139,8 +139,13 @@ export const TaxJarConfigurationForm = (props: TaxJarConfigurationFormProps) =>
         </Box>
         <Divider marginY={8} />
         <Box display={"flex"} justifyContent={"space-between"} alignItems={"center"}>
-          {props.cancelButton}
+          {props.leftButton}
-          <Button disabled={props.isLoading} type="submit" variant="primary">
+          <Button
+            disabled={props.isLoading}
+            type="submit"
+            variant="primary"
+            data-testid="taxjar-configuration-save-button"
+          >
             {props.isLoading ? "Saving..." : "Save"}
           </Button>
         </Box>

apps/taxes/src/modules/taxjar/ui/taxjar-tax-code-matcher-table.tsx

@@ -5,6 +5,41 @@ import { Table } from "../../ui/table";
 import { Select } from "../../ui/_select";
 import { Box, Text } from "@saleor/macaw-ui/next";
 import { AppCard } from "../../ui/app-card";
+import { useRouter } from "next/router";
+
+const useGetTaxCodes = () => {
+  const { data: providers } = trpcClient.providersConfiguration.getAll.useQuery();
+  const { notifyError } = useDashboardNotification();
+  const router = useRouter();
+
+  /*
+   * Tax Code Matcher is only available when there is at least one connection.
+   * The reason for it is that we need any working credentials to fetch the provider tax codes.
+   */
+  const firstConnectionId = providers?.[0].id;
+
+  const result = trpcClient.taxJarTaxCodes.getAllForId.useQuery(
+    {
+      connectionId: firstConnectionId!,
+    },
+    {
+      enabled: firstConnectionId !== undefined,
+      // Retry once, because it's possible we may get a timeout for such a big request.
+      retry: 1,
+    }
+  );
+
+  React.useEffect(() => {
+    if (result.error) {
+      notifyError("Error", "Unable to fetch TaxJar tax codes.");
+      setTimeout(() => {
+        router.push("/configuration");
+      }, 1000);
+    }
+  }, [notifyError, result.error, router]);
+
+  return result;
+};
 
 const SelectTaxCode = ({ taxClassId }: { taxClassId: string }) => {
   const [value, setValue] = React.useState("");
@@ -32,23 +67,7 @@ const SelectTaxCode = ({ taxClassId }: { taxClassId: string }) => {
     },
   });
 
-  const { data: providers } = trpcClient.providersConfiguration.getAll.useQuery();
+  const { data: taxCodes = [], isLoading: isCodesLoading } = useGetTaxCodes();
-
-  /*
-   * Tax Code Matcher is only available when there is at least one connection.
-   * The reason for it is that we need any working credentials to fetch the provider tax codes.
-   */
-  const firstConnectionId = providers?.[0].id;
-
-  const { data: taxCodes = [], isLoading: isCodesLoading } =
-    trpcClient.taxJarTaxCodes.getAllForId.useQuery(
-      {
-        connectionId: firstConnectionId!,
-      },
-      {
-        enabled: firstConnectionId !== undefined,
-      }
-    );
 
   const changeValue = (taxJarTaxCode: string) => {
     setValue(taxJarTaxCode);

apps/taxes/src/modules/ui/app-section.tsx

@@ -1,11 +1,11 @@
-import { Box, Text } from "@saleor/macaw-ui/next";
+import { Box, PropsWithBox, Text } from "@saleor/macaw-ui/next";
-import { PropsWithChildren } from "react";
+import React from "react";
 
 const MAX_WIDTH = "480px";
 
-const Header = ({ children }: PropsWithChildren) => {
+const Header = ({ children, ...props }: PropsWithBox<{ children: React.ReactNode }>) => {
   return (
-    <Box __maxWidth={MAX_WIDTH}>
+    <Box __maxWidth={MAX_WIDTH} {...props}>
       <Text as="p" variant="body">
         {children}
       </Text>
@@ -16,12 +16,13 @@ const Header = ({ children }: PropsWithChildren) => {
 const Description = ({
   title,
   description,
-}: {
+  ...props
+}: PropsWithBox<{
   title: React.ReactNode;
   description: React.ReactNode;
-}) => {
+}>) => {
   return (
-    <Box display="flex" flexDirection={"column"} gap={10} __maxWidth={MAX_WIDTH}>
+    <Box display="flex" flexDirection={"column"} gap={10} __maxWidth={MAX_WIDTH} {...props}>
       <Text as="h3" variant="heading">
         {title}
       </Text>

apps/taxes/src/modules/ui/app-toggle.tsx

@@ -22,7 +22,7 @@ export const AppToggle = <TFieldValues extends FieldValues = FieldValues>({
     <Box display={"flex"} flexDirection={"column"} gap={4}>
       {/* without type="button", radix toggle value change triggers form submission */}
       <Toggle type="button" {...p}>
-        <Text marginLeft={4}>{label}</Text>
+        <Text marginLeft={2}>{label}</Text>
       </Toggle>
       {helperText}
     </Box>

apps/taxes/src/modules/ui/matcher-section.tsx

@@ -7,15 +7,23 @@ import { Table } from "./table";
 import { useRouter } from "next/router";
 
 const MatcherTable = () => {
-  const { data: connections = [] } = trpcClient.providersConfiguration.getAll.useQuery();
+  const { data: connections = [], isLoading } = trpcClient.providersConfiguration.getAll.useQuery();
 
   const isAvatax = connections.some(({ provider }) => provider === "avatax");
   const isTaxJar = connections.some(({ provider }) => provider === "taxjar");
+  const isConfigured = isAvatax || isTaxJar;
 
   const router = useRouter();
 
   return (
-    <AppCard __minHeight={"320px"} height="100%">
+    <AppCard __minHeight={"320px"} height="100%" data-testid="matcher-table">
+      {isLoading ? (
+        <Box height="100%" display={"flex"} alignItems={"center"} justifyContent={"center"}>
+          <Text color="textNeutralSubdued">Loading...</Text>
+        </Box>
+      ) : (
+        <>
+          {isConfigured ? (
             <Table.Container>
               <Table.THead>
                 <Table.TR>
@@ -31,6 +39,7 @@ const MatcherTable = () => {
                     <Table.TD>
                       <Box display="flex" justifyContent={"flex-end"}>
                         <Button
+                          data-testid="avatax-matcher-configure-button"
                           onClick={() => router.push("/providers/avatax/matcher")}
                           variant="tertiary"
                         >
@@ -48,6 +57,7 @@ const MatcherTable = () => {
                     <Table.TD>
                       <Box display="flex" justifyContent={"flex-end"}>
                         <Button
+                          data-testid="taxjar-matcher-configure-button"
                           onClick={() => router.push("/providers/taxjar/matcher")}
                           variant="tertiary"
                         >
@@ -59,6 +69,13 @@ const MatcherTable = () => {
                 )}
               </Table.TBody>
             </Table.Container>
+          ) : (
+            <Box height="100%" display={"flex"} alignItems={"center"} justifyContent={"center"}>
+              <Text color="textNeutralSubdued">You must configure a tax provider first</Text>
+            </Box>
+          )}
+        </>
+      )}
     </AppCard>
   );
 };
@@ -66,6 +83,7 @@ const MatcherTable = () => {
 const Intro = () => {
   return (
     <Section.Description
+      data-testid="matcher-intro"
       title="Tax code matcher"
       description={
         <>

apps/taxes/src/modules/ui/providers-table.tsx

@@ -30,7 +30,9 @@ export const ProvidersTable = () => {
             </Table.TD>
             <Table.TD onClick={() => itemClickHandler(item)}>
               <Box display={"flex"} justifyContent={"flex-end"}>
-                <Button variant="tertiary">Edit</Button>
+                <Button data-testid="provider-edit-button" variant="tertiary">
+                  Edit
+                </Button>
               </Box>
             </Table.TD>
           </Table.TR>

apps/taxes/src/pages/api/webhooks/checkout-calculate-taxes.ts

@@ -6,7 +6,7 @@ import {
 import { saleorApp } from "../../../../saleor-app";
 import { createLogger } from "../../../lib/logger";
 import { WebhookResponse } from "../../../modules/app/webhook-response";
-import { getActiveConnection } from "../../../modules/taxes/active-connection";
+import { getActiveConnectionService } from "../../../modules/taxes/get-active-connection-service";
 
 export const config = {
   api: {
@@ -54,10 +54,14 @@ export default checkoutCalculateTaxesSyncWebhook.createHandler(async (req, res,
   try {
     const appMetadata = payload.recipient?.privateMetadata ?? [];
     const channelSlug = payload.taxBase.channel.slug;
-    const taxProvider = getActiveConnection(channelSlug, appMetadata, ctx.authData);
+    const activeConnectionService = getActiveConnectionService(
+      channelSlug,
+      appMetadata,
+      ctx.authData
+    );
 
-    logger.info({ taxProvider }, "Will calculate taxes using the tax provider:");
+    logger.info("Found active connection service. Calculating taxes...");
-    const calculatedTaxes = await taxProvider.calculateTaxes(payload.taxBase);
+    const calculatedTaxes = await activeConnectionService.calculateTaxes(payload.taxBase);
 
     logger.info({ calculatedTaxes }, "Taxes calculated");
     return webhookResponse.success(ctx.buildResponse(calculatedTaxes));

apps/taxes/src/pages/api/webhooks/order-calculate-taxes.ts

@@ -5,7 +5,7 @@ import {
 } from "../../../../generated/graphql";
 import { saleorApp } from "../../../../saleor-app";
 import { createLogger } from "../../../lib/logger";
-import { getActiveConnection } from "../../../modules/taxes/active-connection";
+import { getActiveConnectionService } from "../../../modules/taxes/get-active-connection-service";
 import { WebhookResponse } from "../../../modules/app/webhook-response";
 
 export const config = {
@@ -54,10 +54,14 @@ export default orderCalculateTaxesSyncWebhook.createHandler(async (req, res, ctx
   try {
     const appMetadata = payload.recipient?.privateMetadata ?? [];
     const channelSlug = payload.taxBase.channel.slug;
-    const taxProvider = getActiveConnection(channelSlug, appMetadata, ctx.authData);
+    const activeConnectionService = getActiveConnectionService(
+      channelSlug,
+      appMetadata,
+      ctx.authData
+    );
 
-    logger.info({ taxProvider }, "Will calculate taxes using the tax provider:");
+    logger.info("Found active connection service. Calculating taxes...");
-    const calculatedTaxes = await taxProvider.calculateTaxes(payload.taxBase);
+    const calculatedTaxes = await activeConnectionService.calculateTaxes(payload.taxBase);
 
     logger.info({ calculatedTaxes }, "Taxes calculated");
     return webhookResponse.success(ctx.buildResponse(calculatedTaxes));

apps/taxes/src/pages/api/webhooks/order-created.ts

@@ -9,7 +9,7 @@ import {
 } from "../../../../generated/graphql";
 import { saleorApp } from "../../../../saleor-app";
 import { createLogger } from "../../../lib/logger";
-import { getActiveConnection } from "../../../modules/taxes/active-connection";
+import { getActiveConnectionService } from "../../../modules/taxes/get-active-connection-service";
 import { Client } from "urql";
 import { WebhookResponse } from "../../../modules/app/webhook-response";
 import { PROVIDER_ORDER_ID_KEY } from "../../../modules/avatax/order-fulfilled/avatax-order-fulfilled-payload-transformer";
@@ -69,14 +69,14 @@ export default orderCreatedAsyncWebhook.createHandler(async (req, res, ctx) => {
   const { saleorApiUrl, token } = authData;
   const webhookResponse = new WebhookResponse(res);
 
-  logger.info({ payload }, "Handler called with payload");
+  logger.info("Handler called with payload");
 
   try {
     const appMetadata = payload.recipient?.privateMetadata ?? [];
     const channelSlug = payload.order?.channel.slug;
-    const taxProvider = getActiveConnection(channelSlug, appMetadata, ctx.authData);
+    const taxProvider = getActiveConnectionService(channelSlug, appMetadata, ctx.authData);
 
-    logger.info({ taxProvider }, "Fetched taxProvider");
+    logger.info("Fetched taxProvider");
 
     // todo: figure out what fields are needed and add validation
     if (!payload.order) {

apps/taxes/src/pages/api/webhooks/order-fulfilled.ts

@@ -5,7 +5,7 @@ import {
 } from "../../../../generated/graphql";
 import { saleorApp } from "../../../../saleor-app";
 import { createLogger } from "../../../lib/logger";
-import { getActiveConnection } from "../../../modules/taxes/active-connection";
+import { getActiveConnectionService } from "../../../modules/taxes/get-active-connection-service";
 import { WebhookResponse } from "../../../modules/app/webhook-response";
 export const config = {
   api: {
@@ -31,22 +31,22 @@ export default orderFulfilledAsyncWebhook.createHandler(async (req, res, ctx) =>
   const { payload } = ctx;
   const webhookResponse = new WebhookResponse(res);
 
-  logger.info({ payload }, "Handler called with payload");
+  logger.info("Handler called with payload");
 
   try {
     const appMetadata = payload.recipient?.privateMetadata ?? [];
     const channelSlug = payload.order?.channel.slug;
-    const taxProvider = getActiveConnection(channelSlug, appMetadata, ctx.authData);
+    const taxProvider = getActiveConnectionService(channelSlug, appMetadata, ctx.authData);
 
-    logger.info({ taxProvider }, "Fetched taxProvider");
+    logger.info("Fetched taxProvider");
 
     // todo: figure out what fields are needed and add validation
     if (!payload.order) {
       return webhookResponse.error(new Error("Insufficient order data"));
     }
-    const fulfilledOrder = await taxProvider.fulfillOrder(payload.order);
+    await taxProvider.fulfillOrder(payload.order);
 
-    logger.info({ fulfilledOrder }, "Order fulfilled");
+    logger.info("Order fulfilled");
 
     return webhookResponse.success();
   } catch (error) {

apps/taxes/src/pages/configuration.tsx

@@ -1,6 +1,5 @@
 import { ChannelSection } from "../modules/channel-configuration/ui/channel-section";
 import { ProvidersSection } from "../modules/provider-connections/ui/providers-section";
-import { trpcClient } from "../modules/trpc/trpc-client";
 import { AppColumns } from "../modules/ui/app-columns";
 import { Section } from "../modules/ui/app-section";
 import { MatcherSection } from "../modules/ui/matcher-section";
@@ -14,14 +13,11 @@ const Header = () => {
 };
 
 const ConfigurationPage = () => {
-  const { data: providers = [] } = trpcClient.providersConfiguration.getAll.useQuery();
-  const isProviders = providers.length > 0;
-
   return (
     <AppColumns top={<Header />}>
       <ProvidersSection />
       <ChannelSection />
-      {isProviders && <MatcherSection />}
+      <MatcherSection />
     </AppColumns>
   );
 };

apps/taxes/src/pages/providers/avatax/matcher.tsx

@@ -1,9 +1,12 @@
-import { Text } from "@saleor/macaw-ui/next";
+import { Box, Text } from "@saleor/macaw-ui/next";
 import { AvataxTaxCodeMatcherTable } from "../../../modules/avatax/ui/avatax-tax-code-matcher-table";
 import { AppColumns } from "../../../modules/ui/app-columns";
 import { AppDashboardLink } from "../../../modules/ui/app-dashboard-link";
 import { Section } from "../../../modules/ui/app-section";
 import { TextLink } from "@saleor/apps-ui";
+import { useDashboardNotification } from "@saleor/apps-shared";
+import { useRouter } from "next/router";
+import { trpcClient } from "../../../modules/trpc/trpc-client";
 
 const Header = () => {
   return <Section.Header>Match Saleor tax classes to Avatax tax codes</Section.Header>;
@@ -25,7 +28,10 @@ const Description = () => {
           </Text>
           <Text as="p" marginBottom={4}>
             If you haven&apos;t created any tax classes yet, you can do it in the{" "}
-            <AppDashboardLink href="/taxes/tax-classes">
+            <AppDashboardLink
+              data-testid="avatax-matcher-tax-classes-text-link"
+              href="/taxes/tax-classes"
+            >
               Configuration → Taxes → Tax classes
             </AppDashboardLink>{" "}
             view.
@@ -44,6 +50,24 @@ const Description = () => {
 };
 
 const AvataxMatcher = () => {
+  const router = useRouter();
+  const { notifyError } = useDashboardNotification();
+
+  const { isLoading } = trpcClient.avataxConnection.verifyConnections.useQuery(undefined, {
+    onError: () => {
+      notifyError("Error", "You must configure Avatax first.");
+      router.push("/configuration");
+    },
+  });
+
+  if (isLoading) {
+    return (
+      <Box>
+        <Text>Loading...</Text>
+      </Box>
+    );
+  }
+
   return (
     <AppColumns top={<Header />}>
       <Description />
@@ -52,7 +76,4 @@ const AvataxMatcher = () => {
   );
 };
 
-/*
- * todo: add redirect if no connection
- */
 export default AvataxMatcher;

apps/taxes/src/pages/providers/index.tsx

@@ -83,7 +83,12 @@ const ProviderCard = ({
       </Box>
       <Box display={"flex"} justifyContent={"flex-end"} marginTop={12}>
         {!isComingSoon && (
-          <Button onClick={() => router.push(`/providers/${provider}`)}>Choose</Button>
+          <Button
+            data-testid="coming-soon-choose-button"
+            onClick={() => router.push(`/providers/${provider}`)}
+          >
+            Choose
+          </Button>
         )}
       </Box>
     </AppCard>

apps/taxes/src/pages/providers/taxjar/matcher.tsx

@@ -1,9 +1,12 @@
-import { Text } from "@saleor/macaw-ui/next";
+import { Box, Text } from "@saleor/macaw-ui/next";
 import { AppColumns } from "../../../modules/ui/app-columns";
 import { AppDashboardLink } from "../../../modules/ui/app-dashboard-link";
 import { Section } from "../../../modules/ui/app-section";
 import { TextLink } from "@saleor/apps-ui";
 import { TaxJarTaxCodeMatcherTable } from "../../../modules/taxjar/ui/taxjar-tax-code-matcher-table";
+import { trpcClient } from "../../../modules/trpc/trpc-client";
+import { useRouter } from "next/router";
+import { useDashboardNotification } from "@saleor/apps-shared";
 
 const Header = () => {
   return <Section.Header>Match Saleor tax classes to TaxJar tax categories</Section.Header>;
@@ -25,7 +28,10 @@ const Description = () => {
           </Text>
           <Text as="p" marginBottom={4}>
             If you haven&apos;t created any tax classes yet, you can do it in the{" "}
-            <AppDashboardLink href="/taxes/tax-classes">
+            <AppDashboardLink
+              data-testid="taxjar-matcher-tax-classes-text-link"
+              href="/taxes/tax-classes"
+            >
               Configuration → Taxes → Tax classes
             </AppDashboardLink>{" "}
             view.
@@ -47,6 +53,24 @@ const Description = () => {
 };
 
 const TaxJarMatcher = () => {
+  const router = useRouter();
+  const { notifyError } = useDashboardNotification();
+
+  const { isLoading } = trpcClient.taxJarConnection.verifyConnections.useQuery(undefined, {
+    onError: () => {
+      notifyError("Error", "You must configure TaxJar first.");
+      router.push("/configuration");
+    },
+  });
+
+  if (isLoading) {
+    return (
+      <Box>
+        <Text>Loading...</Text>
+      </Box>
+    );
+  }
+
   return (
     <AppColumns top={<Header />}>
       <Description />
@@ -55,7 +79,4 @@ const TaxJarMatcher = () => {
   );
 };
 
-/*
- * todo: add redirect if no connection
- */
 export default TaxJarMatcher;