- add taxable query

x/taxexemption/client/cli/query.go

@@ -21,13 +21,44 @@ func GetQueryCmd() *cobra.Command {
 		RunE:                       client.ValidateCmd,
 	}
 	taxexemptionQueryCmd.AddCommand(
+		GetCmdQueryTaxable(),
 		GetCmdQueryZonelist(),
 		GetCmdQueryExemptlist(),
 	)
 
 	return taxexemptionQueryCmd
 }
 
+func GetCmdQueryTaxable() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "taxable [from-address] [to-address]",
+		Args:  cobra.ExactArgs(2),
+		Short: "Query tax exemption of an transfer from an address to another",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			fromAddress := args[0]
+			toAddress := args[1]
+
+			clientCtx, err := client.GetClientQueryContext(cmd)
+			if err != nil {
+				return err
+			}
+			queryClient := types.NewQueryClient(clientCtx)
+
+			res, err := queryClient.Taxable(context.Background(), &types.QueryTaxableRequest{
+				FromAddress: fromAddress,
+				ToAddress:   toAddress,
+			})
+			if err != nil {
+				return err
+			}
+			return clientCtx.PrintProto(res)
+		},
+	}
+
+	flags.AddQueryFlagsToCmd(cmd)
+	return cmd
+}
+
 func GetCmdQueryZonelist() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "zones",

x/taxexemption/keeper/querier.go

@@ -21,6 +21,13 @@ func NewQuerier(keeper Keeper) types.QueryServer {
 
 var _ types.QueryServer = querier{}
 
+// Taxable queries if a tx from one address to another is taxable
+func (q querier) Taxable(c context.Context, req *types.QueryTaxableRequest) (*types.QueryTaxableResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+	taxable := !q.Keeper.IsExemptedFromTax(ctx, req.FromAddress, req.ToAddress)
+	return &types.QueryTaxableResponse{Taxable: taxable}, nil
+}
+
 // TaxExemptionZoneList queries tax exemption zone list of taxexemption module
 func (q querier) TaxExemptionZonesList(c context.Context, req *types.QueryTaxExemptionZonesRequest) (*types.QueryTaxExemptionZonesResponse, error) {
 	ctx := sdk.UnwrapSDKContext(c)