chapter 2

api/src/graphql/posts.sdl.js

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+export const schema = gql`
+  type Post {
+    id: Int!
+    title: String!
+    body: String!
+    createdAt: DateTime!
+  }
+
+  type Query {
+    posts: [Post!]! @requireAuth
+    post(id: Int!): Post @requireAuth
+  }
+
+  input CreatePostInput {
+    title: String!
+    body: String!
+  }
+
+  input UpdatePostInput {
+    title: String
+    body: String
+  }
+
+  type Mutation {
+    createPost(input: CreatePostInput!): Post! @requireAuth
+    updatePost(id: Int!, input: UpdatePostInput!): Post! @requireAuth
+    deletePost(id: Int!): Post! @requireAuth
+  }
+`

api/src/services/posts/posts.js

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+import { db } from 'src/lib/db'
+
+export const posts = () => {
+  return db.post.findMany()
+}
+
+export const post = ({ id }) => {
+  return db.post.findUnique({
+    where: { id },
+  })
+}
+
+export const createPost = ({ input }) => {
+  return db.post.create({
+    data: input,
+  })
+}
+
+export const updatePost = ({ id, input }) => {
+  return db.post.update({
+    data: input,
+    where: { id },
+  })
+}
+
+export const deletePost = ({ id }) => {
+  return db.post.delete({
+    where: { id },
+  })
+}

api/src/services/posts/posts.scenarios.js

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+export const standard = defineScenario({
+  post: {
+    one: { data: { title: 'String', body: 'String' } },
+    two: { data: { title: 'String', body: 'String' } },
+  },
+})

api/src/services/posts/posts.test.js

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+import { posts, post, createPost, updatePost, deletePost } from './posts'
+
+// Generated boilerplate tests do not account for all circumstances
+// and can fail without adjustments, e.g. Float and DateTime types.
+//           Please refer to the RedwoodJS Testing Docs:
+//       https://redwoodjs.com/docs/testing#testing-services
+// https://redwoodjs.com/docs/testing#jest-expect-type-considerations
+
+describe('posts', () => {
+  scenario('returns all posts', async (scenario) => {
+    const result = await posts()
+
+    expect(result.length).toEqual(Object.keys(scenario.post).length)
+  })
+
+  scenario('returns a single post', async (scenario) => {
+    const result = await post({ id: scenario.post.one.id })
+
+    expect(result).toEqual(scenario.post.one)
+  })
+
+  scenario('creates a post', async () => {
+    const result = await createPost({
+      input: { title: 'String', body: 'String' },
+    })
+
+    expect(result.title).toEqual('String')
+    expect(result.body).toEqual('String')
+  })
+
+  scenario('updates a post', async (scenario) => {
+    const original = await post({ id: scenario.post.one.id })
+    const result = await updatePost({
+      id: original.id,
+      input: { title: 'String2' },
+    })
+
+    expect(result.title).toEqual('String2')
+  })
+
+  scenario('deletes a post', async (scenario) => {
+    const original = await deletePost({ id: scenario.post.one.id })
+    const result = await post({ id: original.id })
+
+    expect(result).toEqual(null)
+  })
+})