add the test

src/selectors.test.ts

@@ -0,0 +1,27 @@
+import Updux from '.';
+
+test('basic selectors', () => {
+    const updux = new Updux({
+        subduxes: {
+            bogeys: {
+                selectors: {
+                    bogey: (bogeys: any) => (id: string) => bogeys[id],
+                },
+            },
+        },
+        selectors: {
+            bogeys: ({ bogeys }: any) => bogeys,
+        },
+    } as any);
+
+    const state = {
+        bogeys: {
+            foo: 1,
+            bar: 2
+        }
+    };
+
+    expect( updux.selectors.bogeys(state) ).toEqual( { foo:1, bar :2 } );
+    expect( updux.selectors.bogey(state)('foo')).toEqual(1);
+
+});