more elaborate spec

spec/grape/validations/params_scope_spec.rb

@@ -638,16 +638,23 @@ def initialize(value)
         requires :a, type: String, allow_blank: false, values: %w[x y z]
         given a: ->(val) { val == 'z' } do
           requires :inner3, type: Array, allow_blank: false do
-            requires :bar, type: Integer, allow_blank: false
-            requires :baz, type: Array do
-              requires :baz_category, type: String
+            requires :bar, type: String, allow_blank: false
+            given bar: ->(val) { val == 'b' } do
+              requires :baz, type: Array do
+                optional :baz_category, type: String
+              end
+            end
+            given bar: ->(val) { val == 'c' } do
+              requires :baz, type: Array do
+                requires :baz_category, type: String
+              end
             end
           end
         end
       end
       subject.get('/nested-dependency') { declared(params).to_json }
 
-      get '/nested-dependency', a: 'z', inner3: [{ bar: 3, baz: [{ unrelated: 'nope' }] }]
+      get '/nested-dependency', a: 'z', inner3: [{ bar: 'c', baz: [{ unrelated: 'nope' }] }]
       expect(last_response.status).to eq(400)
       expect(last_response.body).to eq 'inner3[0][baz][0][baz_category] is missing'
     end