✅ test(Connectioon): added a basic test for Connection class

Author: Aryaman1706

Diff for: .gitignore

@@ -1,2 +1,3 @@
 node_modules/
-lib/
+lib/
+**/*.log

Diff for: FirestoreEmulator/.firebaserc

@@ -0,0 +1 @@
+{}

Diff for: FirestoreEmulator/firebase.json

@@ -0,0 +1,15 @@
+{
+  "firestore": {
+    "rules": "firestore.rules",
+    "indexes": "firestore.indexes.json"
+  },
+  "emulators": {
+    "firestore": {
+      "port": 8080
+    },
+    "ui": {
+      "enabled": true,
+      "port": 8000
+    }
+  }
+}

Diff for: FirestoreEmulator/firestore.indexes.json

@@ -0,0 +1,4 @@
+{
+  "indexes": [],
+  "fieldOverrides": []
+}

Diff for: FirestoreEmulator/firestore.rules

@@ -0,0 +1,16 @@
+service cloud.firestore {
+  match /databases/{database}/documents {
+    match /{document=**} {
+      // This rule allows anyone with your database reference to view, edit,
+      // and delete all data in your database. It is useful for getting
+      // started, but it is configured to expire after 30 days because it
+      // leaves your app open to attackers. At that time, all client
+      // requests to your database will be denied.
+      //
+      // Make sure to write security rules for your app before that time, or
+      // else all client requests to your database will be denied until you
+      // update your rules.
+      allow read, write: if request.time < timestamp.date(2021, 8, 22);
+    }
+  }
+}

Diff for: jest.config.js

@@ -1,4 +1,5 @@
 module.exports = {
   preset: "ts-jest",
   testEnvironment: "node",
+  testMatch: ["**/__tests__/**/*.test.[jt]s?(x)"],
 };

Diff for: src/__tests__/Connection/class.test.ts

@@ -0,0 +1,44 @@
+import admin from "firebase-admin";
+import Connection from "../../Connection/class";
+import * as SchemaType from "../../SchemaTypes";
+
+let firestore: FirebaseFirestore.Firestore;
+
+beforeAll(() => {
+  process.env["FIRESTORE_EMULATOR_HOST"] = "localhost:8080";
+
+  admin.initializeApp({
+    projectId: "demo-firefly",
+  });
+
+  firestore = admin.firestore();
+});
+
+describe("Connects to local emulators", () => {
+  it("connects to firestore emulator", async () => {
+    expect.assertions(1);
+
+    try {
+      const connection = new Connection(firestore);
+      const model = connection.model(
+        "test",
+        SchemaType.object<{
+          hello: string;
+        }>().keys({
+          hello: SchemaType.string().required(),
+        })
+      );
+
+      const doc = await model.create({});
+
+      const data = await doc.data();
+
+      expect(data).toEqual({
+        hello: "world",
+      });
+    } catch (error) {
+      const errorType = JSON.parse(error.message).type;
+      expect(errorType).toBe("Model/SchemaValidation");
+    }
+  });
+});