fix: Allow nil values in date_accessor (#189)

Author: andrii-balitskyi

lib/seam/base_resource.rb

@@ -41,9 +41,7 @@ def self.date_accessor(*attrs)
           define_method(attr) do
             value = instance_variable_get(:"@#{attr}")
 
-            raise "No value for #{attr} set" if value.nil?
-
-            parse_datetime(value)
+            value.nil? ? nil : parse_datetime(value)
           end
         end
       end

spec/resources/acs_credential_spec.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+RSpec.describe Seam::Resources::AcsCredential do
+  let(:client) { Seam.new(api_key: "seam_some_api_key") }
+
+  describe "date handling" do
+    context "with nil dates" do
+      let(:credential_hash) do
+        {
+          acs_credential_id: "test_id",
+          issued_at: nil,
+          created_at: nil
+        }
+      end
+
+      it "returns nil for nil date fields" do
+        credential = described_class.new(credential_hash, client)
+        expect(credential.issued_at).to be_nil
+        expect(credential.created_at).to be_nil
+      end
+    end
+
+    context "with valid dates" do
+      let(:now) { Time.now.utc }
+      let(:credential_hash) do
+        {
+          acs_credential_id: "test_id",
+          issued_at: now.iso8601,
+          created_at: now.iso8601
+        }
+      end
+
+      it "parses date fields correctly" do
+        credential = described_class.new(credential_hash, client)
+        expect(credential.issued_at).to be_a(Time)
+        expect(credential.created_at).to be_a(Time)
+      end
+    end
+  end
+end