1 files changed, 39 insertions, 0 deletions
diff --git a/spec/helpers/common_helper_spec.rb b/spec/helpers/common_helper_spec.rb
new file mode 100644
index 000000000..186c4184e
--- /dev/null
+++ b/spec/helpers/common_helper_spec.rb
@@ -0,0 +1,39 @@
+RSpec.describe CommonHelper do
+
+  subject do
+    Object.new.extend( described_class )
+  end
+
+  describe 'string_keys_to_symbols' do 
+    context 'nullpotency on symbol keys' do
+      it { expect(subject.string_keys_to_symbols({})).to eq({}) }
+      it do
+        expect(subject.string_keys_to_symbols(
+          a: 1, b: 2
+        )).to  eq(a: 1, b: 2)
+      end
+    end
+
+    context 'changing string keys' do 
+      it { expect(subject.string_keys_to_symbols('alpha' => 100)).to eq(alpha: 100) }
+      
+      it do
+        expect( subject.string_keys_to_symbols('a' => 10, b: 20) )
+          .to eq(a: 10, b: 20)
+      end
+      it do
+        expect( subject.string_keys_to_symbols('a' => 10, 'b' => 20) )
+          .to eq(a: 10, b: 20)
+      end
+    end
+
+    context 'keys, not values, are changed' do
+      it do
+        expect(subject.string_keys_to_symbols(a: 'a', 'b' => 'b', 'c' => :c))
+          .to eq(a: 'a', b: 'b', c: :c) 
+      end
+    end
+
+
+  end
+end