invalid vote prevention

teropa · Sep 6, 2015 · a6bc6f4feb9efe21166f23d5776fc64129742133 · a6bc6f4
1 parent 97416af
commit a6bc6f4feb9efe21166f23d5776fc64129742133
Unified Split

Showing with 21 additions and 5 deletions.

+9 −5 src/core.js

+12 −0 test/core_spec.js
diff --git a/src/core.js b/src/core.js
@@ -32,9 +32,13 @@ export function next(state) {
 }

 export function vote(voteState, entry) {
-  return voteState.updateIn(
-    ['tally', entry],
-    0,
-    tally => tally + 1
-  );
+  if (voteState.get('pair').includes(entry)) {
+    return voteState.updateIn(
+      ['tally', entry],
+      0,
+      tally => tally + 1
+    );
+  } else {
+    return voteState;
+  }
 }
diff --git a/test/core_spec.js b/test/core_spec.js
@@ -144,6 +144,18 @@ describe('application logic', () => {
      );
    });

+    it('ignores the vote if for an invalid entry', () => {
+      expect(
+        vote(Map({
+          pair: List.of('Trainspotting', '28 Days Later')
+        }), 'Sunshine')
+      ).to.equal(
+        Map({
+          pair: List.of('Trainspotting', '28 Days Later')
+        })
+      );
+    });
+
  });

 });