async def METHOD_NAME(context, monkeypatch):
    context.gcs_client = "FakeClient"
    monkeypatch.setattr(beetmoverscript.gcloud, "Bucket", FakeClient.FakeBucket)
    await beetmoverscript.gcloud.upload_to_gcs(context, "path/target", FakeClient.FakeBlob.PATH)
    # With existing file
    monkeypatch.setattr(beetmoverscript.gcloud, "Bucket", FakeClient.FakeBucketExisting)
    await beetmoverscript.gcloud.upload_to_gcs(context, "path/target", FakeClient.FakeBlob.PATH)