Jest for server

- Introduced the Jest testing framework into our server side code so
plugins can now have tests that run

plugin-api/beta/server/getReactionConfig.js

@@ -239,26 +239,14 @@ function getReactionConfig(reaction) {
     hooks: {
       Action: {
         __resolveType: {
-          post({ action_type }) {
-            switch (action_type) {
-              case REACTION:
-                return `${Reaction}Action`;
-              default:
-                return undefined;
-            }
-          },
+          post: ({ action_type }) =>
+            action_type === REACTION ? `${Reaction}Action` : undefined,
         },
       },
       ActionSummary: {
         __resolveType: {
-          post({ action_type }) {
-            switch (action_type) {
-              case REACTION:
-                return `${Reaction}ActionSummary`;
-              default:
-                return undefined;
-            }
-          },
+          post: ({ action_type = '' } = {}) =>
+            action_type === REACTION ? `${Reaction}ActionSummary` : undefined,
         },
       },
     },

plugin-api/beta/server/getReactionConfig.spec.js

@@ -0,0 +1,51 @@
+const getReactionConfig = require('./getReactionConfig');
+
+describe('plugins-api', () => {
+  describe('getReactionConfig', () => {
+    let config;
+    beforeEach(() => {
+      config = getReactionConfig('heart');
+    });
+
+    describe('context', () => {
+      it('provides a sort function', () => {
+        expect(config.context.Sort).toBeInstanceOf(Function);
+        const sort = config.context.Sort();
+        expect(sort.Comments).toHaveProperty('hearts');
+      });
+    });
+
+    describe('hooks', () => {
+      it('handles the __resolveType properly', () => {
+        expect(config.hooks.ActionSummary.__resolveType).toHaveProperty('post');
+        expect(config.hooks.ActionSummary.__resolveType.post).toBeInstanceOf(
+          Function
+        );
+        expect(
+          config.hooks.ActionSummary.__resolveType.post({})
+        ).toBeUndefined();
+        expect(
+          config.hooks.ActionSummary.__resolveType.post({ action_type: 'LOVE' })
+        ).toBeUndefined();
+        expect(
+          config.hooks.ActionSummary.__resolveType.post({
+            action_type: 'HEART',
+          })
+        ).toEqual('HeartActionSummary');
+      });
+      it('handles the __resolveType properly', () => {
+        expect(config.hooks.Action.__resolveType).toHaveProperty('post');
+        expect(config.hooks.Action.__resolveType.post).toBeInstanceOf(Function);
+        expect(config.hooks.Action.__resolveType.post({})).toBeUndefined();
+        expect(
+          config.hooks.Action.__resolveType.post({ action_type: 'LOVE' })
+        ).toBeUndefined();
+        expect(
+          config.hooks.Action.__resolveType.post({
+            action_type: 'HEART',
+          })
+        ).toEqual('HeartAction');
+      });
+    });
+  });
+});