Add permissions selector and tests

src/redux/permissions.js

@@ -54,3 +54,7 @@ module.exports.setPermissionsError = error => ({
     type: Types.SET_PERMISSIONS_ERROR,
     error: error
 });
+
+// Selectors - Being extra cautious with stict truthiness
+module.exports.selectIsAdmin = state => state.permissions.admin === true;
+module.exports.selectIsSocial = state => state.permissions.social === true;

test/unit/redux/permissions.test.js

@@ -0,0 +1,31 @@
+import {
+    selectIsAdmin, selectIsSocial, permissionsReducer, setPermissions
+} from '../../../src/redux/permissions';
+
+describe('permission selectors', () => {
+    test('all permissions are initially false', () => {
+        const state = {
+            permissions: {}
+        };
+        expect(selectIsAdmin(state)).toBe(false);
+        expect(selectIsSocial(state)).toBe(false);
+    });
+
+    test('selectIsAdmin', () => {
+        let state = {
+            permissions: {}
+        };
+        const newPermissions = {admin: true};
+        state.permissions = permissionsReducer(state.session, setPermissions(newPermissions));
+        expect(selectIsAdmin(state)).toBe(true);
+    });
+
+    test('isSocial', () => {
+        let state = {
+            permissions: {}
+        };
+        const newPermissions = {social: true};
+        state.permissions = permissionsReducer(state.session, setPermissions(newPermissions));
+        expect(selectIsSocial(state)).toBe(true);
+    });
+});