Merge pull request #22 from takkanm/allow_hash_arguments

allow hash arguments

lib/rspec/parameterized.rb

@@ -38,7 +38,18 @@ def initialize(arg_names, table_format, &block)
       #     end
       #
       def where(*args, &b)
-        set_parameters(args, false, &b)
+
+        if args.size == 1 && args[0].instance_of?(Hash)
+          params = args[0]
+          first, *rest = params.values
+
+          set_parameters(params.keys, false) {
+            rest_values = rest.map {|k| params[k] }
+            first.product(*rest)
+          }
+        else
+          set_parameters(args, false, &b)
+        end
       end
 
       # Set parameters to be bound in specs under this example group.

spec/parametarized_spec.rb

@@ -50,6 +50,16 @@
     end
   end
 
+  describe "Hash arguments" do
+    where(a: [1, 3], b: [5, 7, 9], c: [2, 4])
+
+    with_them do
+      it "sums is even" do
+        expect(a + b + c).to be_even
+      end
+    end
+  end
+
   describe "table separated with pipe" do
     where_table(:a, :b, :answer) do
       1         | 2         | 3