text: // Tests various cases of dropping and recreating collections in the same namespace with multiple
  // mongoses
  (function() {
      'use strict';
  
      var st = new ShardingTest({shards: 3, mongos: 3, causallyConsistent: true});
  
      var config = st.s0.getDB("config");
      var admin = st.s0.getDB("admin");
      var coll = st.s0.getCollection("foo.bar");
  
      // Use separate mongoses for admin, inserting data, and validating results, so no single-mongos
      // tricks will work
      var staleMongos = st.s1;
      var insertMongos = st.s2;
  
      var shards = [st.shard0, st.shard1, st.shard2];
  
      //
      // Test that inserts and queries go to the correct shard even when the collection has been
      // sharded from another mongos
      //
  
      jsTest.log("Enabling sharding for the first time...");
  
      assert.commandWorked(admin.runCommand({enableSharding: coll.getDB() + ""}));
      // TODO(PM-85): Make sure we *always* move the primary after collection lifecyle project is
      // complete
      st.ensurePrimaryShard(coll.getDB().getName(), st.shard1.shardName);
      assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
      st.configRS.awaitLastOpCommitted();  // TODO: Remove after collection lifecyle project (PM-85)
  
      var bulk = insertMongos.getCollection(coll + "").initializeUnorderedBulkOp();
      for (var i = 0; i < 100; i++) {
          bulk.insert({_id: i, test: "a"});
      }
      assert.writeOK(bulk.execute());
      assert.eq(100, staleMongos.getCollection(coll + "").find({test: "a"}).itcount());
  
      assert(coll.drop());
  
      //
      // Test that inserts and queries go to the correct shard even when the collection has been
      // resharded from another mongos, with a different key
      //
  
      jsTest.log("Re-enabling sharding with a different key...");
  
      st.ensurePrimaryShard(coll.getDB().getName(), st.shard1.shardName);
      assert.commandWorked(coll.ensureIndex({notId: 1}));
      assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {notId: 1}}));
  
      bulk = insertMongos.getCollection(coll + "").initializeUnorderedBulkOp();
      for (var i = 0; i < 100; i++) {
          bulk.insert({notId: i, test: "b"});
      }
      assert.writeOK(bulk.execute());
      assert.eq(100, staleMongos.getCollection(coll + "").find({test: "b"}).itcount());
      assert.eq(0, staleMongos.getCollection(coll + "").find({test: {$in: ["a"]}}).itcount());
  
      assert(coll.drop());
  
      //
      // Test that inserts and queries go to the correct shard even when the collection has been
      // unsharded from another mongos
      //
  
      jsTest.log("Re-creating unsharded collection from a sharded collection...");
  
      bulk = insertMongos.getCollection(coll + "").initializeUnorderedBulkOp();
      for (var i = 0; i < 100; i++) {
          bulk.insert({test: "c"});
      }
      assert.writeOK(bulk.execute());
  
      assert.eq(100, staleMongos.getCollection(coll + "").find({test: "c"}).itcount());
      assert.eq(0, staleMongos.getCollection(coll + "").find({test: {$in: ["a", "b"]}}).itcount());
  
      assert(coll.drop());
  
      //
      // Test that inserts and queries go to correct shard even when the collection has been unsharded
      // and resharded from another mongos on a different primary
      //
      // TODO: SERVER-32607 uncomment after the proper database version checks are in place.
      /*
          jsTest.log("Re-creating sharded collection with different primary...");
  
          var getOtherShard = function(shardId) {
              for (var i = 0; i < shards.length; ++i) {
                  if (shards[i].shardName != shardId)
                      return shards[i].shardName;
              }
          };
  
          assert.commandWorked(admin.runCommand({
              movePrimary: coll.getDB() + "",
              to: getOtherShard(config.databases.findOne({_id: coll.getDB() + ""}).primary)
          }));
          assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
  
          bulk = insertMongos.getCollection(coll + "").initializeUnorderedBulkOp();
          for (var i = 0; i < 100; i++) {
              bulk.insert({test: "d"});
          }
          assert.writeOK(bulk.execute());
  
          assert.eq(100, staleMongos.getCollection(coll + "").find({test: "d"}).itcount());
          assert.eq(0,
                    staleMongos.getCollection(coll + "").find({test: {$in: ["a", "b",
         "c"]}}).itcount());
  
          assert(coll.drop());
      */
      st.stop();
  })();
  