DatabaseImpl.docExists test

packages/backend-core/src/db/tests/DatabaseImpl.spec.ts

@@ -0,0 +1,55 @@
+import _ from "lodash"
+import { AnyDocument } from "@budibase/types"
+import { generator } from "../../../tests"
+import { DatabaseImpl } from "../couch"
+import { newid } from "../../utils"
+
+describe("DatabaseImpl", () => {
+  const database = new DatabaseImpl(generator.word())
+  const documents: AnyDocument[] = []
+
+  beforeAll(async () => {
+    const docsToCreate = Array.from({ length: 10 }).map(() => ({
+      _id: newid(),
+    }))
+    const createdDocs = await database.bulkDocs(docsToCreate)
+
+    documents.push(...createdDocs.map((x: any) => ({ _id: x.id, _rev: x.rev })))
+  })
+
+  describe("docExists", () => {
+    it("can check existing docs by id", async () => {
+      const existingDoc = _.sample(documents)
+      const result = await database.docExists(existingDoc!._id!)
+
+      expect(result).toBe(true)
+    })
+
+    it("can check non existing docs by id", async () => {
+      const result = await database.docExists(newid())
+
+      expect(result).toBe(false)
+    })
+
+    it("can check an existing doc by id multiple times", async () => {
+      const existingDoc = _.sample(documents)
+      const id = existingDoc!._id!
+
+      const results = []
+      results.push(await database.docExists(id))
+      results.push(await database.docExists(id))
+      results.push(await database.docExists(id))
+
+      expect(results).toEqual([true, true, true])
+    })
+
+    it("returns false after the doc is deleted", async () => {
+      const existingDoc = _.sample(documents)
+      const id = existingDoc!._id!
+      expect(await database.docExists(id)).toBe(true)
+
+      await database.remove(existingDoc!)
+      expect(await database.docExists(id)).toBe(false)
+    })
+  })
+})