mock reducer

client/src/reducers/genesets.js

@@ -0,0 +1,25 @@
+/*
+Reducers for geneset UI-state.
+*/
+const GeneSets = (
+  state = {
+    addGenesetModeActive: false,
+    isEditingGenesetName: false,
+    genesetAddingNewGenes: null,
+  },
+  action
+) => {
+  switch (action.type) {
+    case "geneset: activate add new geneset mode": {
+      return {
+        ...state,
+        addGenesetModeActive: true,
+      };
+    }
+
+    default:
+      return state;
+  }
+};
+
+export default GeneSets;