SERVER-65644: Add test to validate batched deletes during resharding

jstests/sharding/resharding_with_multi_deletes.js

@@ -0,0 +1,41 @@
+/**
+ * Test the correctness of multi deletes during resharding.
+ *
+ * @tags: [
+ * requires_sharding,
+ * ]
+ */
+
+(function() {
+"use strict";
+
+load("jstests/sharding/libs/resharding_test_fixture.js");
+
+const reshardingTest = new ReshardingTest();
+
+reshardingTest.setup();
+
+const donorShardNames = reshardingTest.donorShardNames;
+const sourceCollection = reshardingTest.createShardedCollection({
+ ns: "reshardingDb.coll",
+ shardKeyPattern: {oldKey: 1},
+ chunks: [{min: {oldKey: MinKey}, max: {oldKey: MaxKey}, shard: donorShardNames[0]}],
+});
+
+assert.commandWorked(sourceCollection.insert([{x: 1}, {x: 3}, {x: 3}, {x: 1}]));
+
+const recipientShardNames = reshardingTest.recipientShardNames;
+reshardingTest.withReshardingInBackground(
+ {
+ newShardKeyPattern: {newKey: 1},
+ newChunks: [{min: {newKey: MinKey}, max: {newKey: MaxKey}, shard: recipientShardNames[0]}],
+ },
+ () => {
+ // We wait until cloneTimestamp has been chosen to guarantee that any subsequent writes will
+ // be applied by the ReshardingOplogApplier.
+ reshardingTest.awaitCloneTimestampChosen();
+
+ assert.commandWorked(sourceCollection.remove({x: 1}, {justOne: false}));
+ });
+reshardingTest.teardown();
+})();