Add support for fetching tax rates by location

2 files changed, 67 insertions, 0 deletions

diff --git a/lib/super_good/solidus_taxjar/api.rb b/lib/super_good/solidus_taxjar/api.rb
index 1065ae5..ffefd5f 100644
--- a/lib/super_good/solidus_taxjar/api.rb
+++ b/lib/super_good/solidus_taxjar/api.rb
@@ -16,6 +16,16 @@ module SuperGood
         taxjar_client.tax_for_order order_params(order)
       end
 
+      def tax_rates_for(address)
+        taxjar_client.rates_for_location(
+          address.zipcode,
+          street: address.address1,
+          city: address.city,
+          state: address&.state&.abbr || address.state_name,
+          country: address.country.iso
+        )
+      end
+
       private
 
       attr_reader :taxjar_client
diff --git a/spec/super_good/solidus_taxjar/api_spec.rb b/spec/super_good/solidus_taxjar/api_spec.rb
index cbacad5..ef1a96d 100644
--- a/spec/super_good/solidus_taxjar/api_spec.rb
+++ b/spec/super_good/solidus_taxjar/api_spec.rb
@@ -132,4 +132,61 @@ RSpec.describe SuperGood::SolidusTaxJar::API do
 
     it { is_expected.to eq({ some_kind_of: "response" }) }
   end
+
+  describe "#tax_rates_for" do
+    subject { api.tax_rates_for address }
+
+    let(:api) do
+      described_class.new(taxjar_client: dummy_client)
+    end
+
+    let(:dummy_client) do
+      instance_double ::Taxjar::Client
+    end
+
+    let(:address) do
+      Spree::Address.create!(
+        country: country_us,
+        state: state_california,
+        zipcode: "90210",
+        city: "Los Angeles",
+        address1: "475 N Beverly Dr",
+
+        first_name: "Chuck",
+        last_name: "Schuldiner",
+        phone: "1-250-555-4444"
+      )
+    end
+
+    let(:country_us) do
+      Spree::Country.create!(
+        iso_name: "UNITED STATES",
+        iso: "US",
+        iso3: "USA",
+        name: "United States",
+        numcode: 840,
+        states_required: true
+      )
+    end
+
+    let(:state_california) do
+      Spree::State.create!(
+        country: country_us,
+        name: "California",
+        abbr: "CA"
+      )
+    end
+
+    before do
+      allow(dummy_client).to receive(:rates_for_location).with(
+        "90210",
+        country: "US",
+        city: "Los Angeles",
+        state: "CA",
+        street: "475 N Beverly Dr"
+      ).and_return({ some_kind_of: "response" })
+    end
+
+    it { is_expected.to eq({ some_kind_of: "response" }) }
+  end
 end