Cannot reuse document after delete/clearFirestoreData

Environment info

@firebase/testing: 0.20.9 firebase-tools: 8.6.0 mocha: 8.0.1 typescript: 3.9.6 Platform: Windows 10

Test case

I have a test suite that runs against the firestore emulator. I have a need to reuse the same document when testing.

When I run the following test (simplified here) …

import * as firebase from '@firebase/testing';

describe('My Test Suite', function () {
    const PROJECT_ID='my-project-id';
 
   it('Should work all the time...', async () => {
        const db = firebase.initializeAdminApp({ projectId: PROJECT_ID }).firestore();
        const ref = db.doc('testcollection/mytest');
        await doSomethingWithinTransaction(db, ref);
        await doSomethingWithinTransaction(db, ref);
        await ref.delete(); // Or await firebase.clearFirestoreData({ projectId: PROJECT_ID });
        console.log('will break on next line...')
        await doSomethingWithinTransaction(db, ref);
    });

    async function doSomethingWithinTransaction(db: firebase.firestore.Firestore, ref: firebase.firestore.DocumentReference) {
        await db.runTransaction(async transaction => {
            const doc = await transaction.get(ref);
            if (!doc.exists) {
                transaction.set(ref, { prop1: '123' });
            }
        });
    }
}

Steps to reproduce

1. Run the emulators (firestore)
2. Run the testcase e.g. mocha mytestfile.js

Expected behavior

The test should run - i.e. Should be able to delete then reuse the same document.

Actual behavior

The test fails with this error in the Terminal window (vscode)

FirebaseError: 9 FAILED_PRECONDITION: the stored version (1596517656046369) does not match the required base version (0)

Here is the content of firestore-debug.log

API endpoint: http://localhost:8080
If you are using a library that supports the FIRESTORE_EMULATOR_HOST environment variable, run:

   export FIRESTORE_EMULATOR_HOST=localhost:8080

Dev App Server is now running.

Aug 04, 2020 3:07:23 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:07:23 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:07:23 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:07:23 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected HTTP/2 connection.
Aug 04, 2020 3:07:24 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:07:24 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:07:33 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected HTTP/2 connection.
Aug 04, 2020 3:07:37 PM com.google.cloud.datastore.emulator.impl.util.WrappedStreamObserver onError
INFO: operation failed: the stored version (1596517656046369) does not match the required base version (0)
Aug 04, 2020 3:07:37 PM com.google.cloud.datastore.emulator.impl.util.WrappedStreamObserver onError
INFO: operation failed: the stored version (1596517656046369) does not match the required base version (0)
Aug 04, 2020 3:07:38 PM com.google.cloud.datastore.emulator.impl.util.WrappedStreamObserver onError
INFO: operation failed: the stored version (1596517656046369) does not match the required base version (0)
Aug 04, 2020 3:07:41 PM com.google.cloud.datastore.emulator.impl.util.WrappedStreamObserver onError
INFO: operation failed: the stored version (1596517656046369) does not match the required base version (0)
Aug 04, 2020 3:07:45 PM com.google.cloud.datastore.emulator.impl.util.WrappedStreamObserver onError
INFO: operation failed: the stored version (1596517656046369) does not match the required base version (0)
Aug 04, 2020 3:07:48 PM com.google.cloud.datastore.emulator.impl.util.WrappedStreamObserver onError
INFO: operation failed: the stored version (1596517656046369) does not match the required base version (0)
Aug 04, 2020 3:07:55 PM io.netty.channel.DefaultChannelPipeline onUnhandledInboundException
WARNING: An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
java.net.SocketException: Connection reset
	at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:345)
	at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:376)
	at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1133)
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:832)

Aug 04, 2020 3:08:36 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:09:36 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:10:36 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:11:36 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:12:37 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:13:37 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.
Aug 04, 2020 3:14:37 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
INFO: Detected non-HTTP/2 connection.

[gbhall]

I just spent an inordinate amount of time thinking I wasn’t understanding transactions properly.

Had this same issue using the Swift SDK and emulator. No longer using the emulator and it runs as expected.

Same issue when clearing data within Firestore in the emulator and getting the error does not match the required base version

[scottcrossen]

Yeah looks like a bug! I think athoma13 found the underlying issue too ( thanks alot for looking!).

Unless anyone has objections, I’m going to close this bug as a duplicate of #1971. Please reopen if I’ve missed something!