tests added for click count

backend/src/db/factories.js

@@ -130,6 +130,7 @@ Factory.define('post')
     deleted: false,
     imageBlurred: false,
     imageAspectRatio: 1.333,
+    clickedCount: 0,
   })
   .attr('pinned', ['pinned'], (pinned) => {
     // Convert false to null

backend/src/middleware/userInteractions.js

@@ -1,33 +1,33 @@
 const createRelatedCypher = (relation) => `
 MATCH (user:User { id: $currentUser})
-MATCH (post:Post { id: $postId})<-[r:${relation}]-(u:User)
+MATCH (post:Post { id: $postId})
+OPTIONAL MATCH (post)<-[r:${relation}]-(u:User)
 WHERE NOT u.disabled AND NOT u.deleted
 WITH user, post, count(DISTINCT u) AS count
 MERGE (user)-[relation:${relation} { }]->(post)
 ON CREATE
 SET relation.count = 1,
 relation.createdAt = toString(datetime()),
-post.clickCount =  count + 1
+post.clickedCount =  count + 1
 ON MATCH
 SET relation.count = relation.count + 1,
 relation.updatedAt = toString(datetime()),
-post.clickCount = count
+post.clickedCount = count
 RETURN user, post, relation
 `
 
 const setPostCounter = async (postId, relation, context) => {
-  const { user: currentUser } = context
+  const {
+    user: { id: currentUser },
+  } = context
   const session = context.driver.session()
   try {
     await session.writeTransaction((txc) => {
-      return txc.run(
-        createRelatedCypher(relation),
-        { currentUser, postId },
-      )
+      return txc.run(createRelatedCypher(relation), { currentUser, postId })
     })
   } finally {
     session.close()
-  }  
+  }
 }
 
 const userClickedPost = async (resolve, root, args, context, info) => {

backend/src/middleware/userInteractions.spec.js

@@ -0,0 +1,98 @@
+import Factory, { cleanDatabase } from '../db/factories'
+import { gql } from '../helpers/jest'
+import { getNeode, getDriver } from '../db/neo4j'
+import createServer from '../server'
+import { createTestClient } from 'apollo-server-testing'
+
+let query, aUser, bUser, post, authenticatedUser, variables
+
+const driver = getDriver()
+const neode = getNeode()
+
+const postQuery = gql`
+  query($id: ID) {
+    Post(id: $id) {
+      clickedCount
+    }
+  }
+`
+
+beforeAll(async () => {
+  await cleanDatabase()
+  aUser = await Factory.build('user', {
+    id: 'a-user',
+  })
+  bUser = await Factory.build('user', {
+    id: 'b-user',
+  })
+  post = await Factory.build('post')
+  authenticatedUser = await aUser.toJson()
+  const { server } = createServer({
+    context: () => {
+      return {
+        driver,
+        neode,
+        user: authenticatedUser,
+      }
+    },
+  })
+  query = createTestClient(server).query
+})
+
+afterAll(async () => {
+  await cleanDatabase()
+})
+
+describe('middleware/userInteractions', () => {
+  describe('given one post', () => {
+    it('does not change clickedCount when queried without ID', async () => {
+      await expect(query({ query: postQuery, variables })).resolves.toMatchObject({
+        data: {
+          Post: expect.arrayContaining([
+            {
+              clickedCount: 0,
+            },
+          ]),
+        },
+      })
+    })
+
+    it('changes clickedCount when queried with ID', async () => {
+      variables = { id: post.get('id') }
+      await expect(query({ query: postQuery, variables })).resolves.toMatchObject({
+        data: {
+          Post: expect.arrayContaining([
+            {
+              clickedCount: 1,
+            },
+          ]),
+        },
+      })
+    })
+
+    it('does not change clickedCount when same user queries the post again', async () => {
+      await expect(query({ query: postQuery, variables })).resolves.toMatchObject({
+        data: {
+          Post: expect.arrayContaining([
+            {
+              clickedCount: 1,
+            },
+          ]),
+        },
+      })
+    })
+
+    it('changes clickedCount when another user queries the post', async () => {
+      authenticatedUser = await bUser.toJson()
+      await expect(query({ query: postQuery, variables })).resolves.toMatchObject({
+        data: {
+          Post: expect.arrayContaining([
+            {
+              clickedCount: 2,
+            },
+          ]),
+        },
+      })
+    })
+  })
+})

backend/src/models/Post.js

@@ -22,6 +22,7 @@ export default {
   contentExcerpt: { type: 'string', allow: [null] },
   deleted: { type: 'boolean', default: false },
   disabled: { type: 'boolean', default: false },
+  clickedCount: { type: 'int', default: 0 },
   notified: {
     type: 'relationship',
     relationship: 'NOTIFIED',

backend/src/schema/resolvers/posts.js

@@ -88,6 +88,7 @@ export default {
             SET post += $params
             SET post.createdAt = toString(datetime())
             SET post.updatedAt = toString(datetime())
+            SET post.clickedCount = 0
             WITH post
             MATCH (author:User {id: $userId})
             MERGE (post)<-[:WROTE]-(author)

backend/src/schema/types/type/Post.gql

@@ -157,9 +157,7 @@ type Post {
     )
 
   clickedCount: Int!
-    @cypher(
-      statement: "MATCH (this)<-[:CLICKED]-(r:User) WHERE NOT r.deleted = true AND NOT r.disabled = true RETURN COUNT(DISTINCT r)"
-    )
+
   emotions: [EMOTED]
   emotionsCount: Int!
     @cypher(statement: "MATCH (this)<-[emoted:EMOTED]-(:User) RETURN COUNT(DISTINCT emoted)")