如何使用模拟器模拟测试Firestore的数据

firebase emulators:start --only firestore

const firebaseConfig = {
  apiKey: "your-api-key",
  authDomain: "your-auth-domain",
  projectId: "your-project-id",
  databaseURL: "your-database-url",
  storageBucket: "your-storage-bucket",
  messagingSenderId: "your-messaging-sender-id",
  appId: "your-app-id"
};

firebase.initializeApp(firebaseConfig);

const db = firebase.firestore();

if (location.hostname === "localhost") {
  db.settings({
    host: "localhost:8080",
    ssl: false
  });
}

// 向集合中添加文档
db.collection("users").add({
    name: "John",
    age: 30,
    email: "john@example.com"
})
.then((docRef) => {
    console.log("Document written with ID: ", docRef.id);
})
.catch((error) => {
    console.error("Error adding document: ", error);
});

// 读取集合中的文档
db.collection("users").get()
.then((querySnapshot) => {
    querySnapshot.forEach((doc) => {
        console.log(doc.id, " => ", doc.data());
    });
})
.catch((error) => {
    console.error("Error getting documents: ", error);
});