You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: split_queue_test.go
    path of file: ./repos/cockroach/pkg/kv/kvserver
    
    the code of the file until where you have to start completion: // Copyright 2015 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.

package kvserver

import (
	"context"
	"math"
	"testing"

	"github.com/cockroachdb/cockroach/pkg/config"
	"github.com/cockroachdb/cockroach/pkg/config/zonepb"
	"github.com/cockroachdb/cockroach/pkg/keys"
	"github.com/cockroachdb/cockroach/pkg/kv"
	"github.com/cockroachdb/cockroach/pkg/kv/kvserver/logstore"
	"github.com/cockroachdb/cockroach/pkg/roachpb"
	"github.com/cockroachdb/cockroach/pkg/storage/enginepb"
	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
	"github.com/cockroachdb/cockroach/pkg/util/log"
	"github.com/cockroachdb/cockroach/pkg/util/stop"
	"github.com/gogo/protobuf/proto"
	"github.com/stretchr/testify/require"
)

// TestSplitQueueShouldQueue verifies shouldSplitRange method correctly
// combines splits in zone configs with the size of the range.
func TestSplitQueueShouldQueue(t *testing.T) {
	defer leaktest.AfterTest(t)()
	defer log.Scope(t).Close(t)
	ctx := context.Background()
	tc := testContext{}
	stopper := stop.NewStopper()
	defer stopper.Stop(ctx)
	sc := TestStoreConfig(nil)
	sc.TestingKnobs.DisableCanAckBeforeApplication = true
	tc.StartWithStoreConfig(ctx, t, stopper, sc)

	// Set zone configs.
	config.TestingSetZoneConfig(2000, zonepb.ZoneConfig{RangeMaxBytes: proto.Int64(32 << 20)})
	config.TestingSetZoneConfig(2002, zonepb.ZoneConfig{RangeMaxBytes: proto.Int64(32 << 20)})

	testCases := []struct {
		start, end roachpb.RKey
		bytes      int64
		maxBytes   int64
		shouldQ    bool
		priority   float64
	}{
		// No intersection, no bytes, no load.
		{roachpb.RKeyMin, roachpb.RKey(keys.MetaMax), 0, 64 << 20, false, 0},
		// Intersection in zone, no bytes, no load.
		{roachpb.RKey(keys.SystemSQLCodec.TablePrefix(2001)), roachpb.RKeyMax, 0, 64 << 20, true, 1},
		// Already split at largest ID, no
    
func TestSplitQueueShouldQueue(t *testing.T) {
	defer leaktest.AfterTest(t)()
	defer log.Scope(t).Close(t)
	ctx := context.Background()
	tc := testContext{}
	stopper := stop.NewStopper()
	defer stopper.Stop(ctx)
	sc := TestStoreConfig(nil)
	sc.TestingKnobs.DisableCanAckBeforeApplication = true
	tc.StartWithStoreConfig(ctx, t, stopper, sc)

	// Set zone configs.
	config.TestingSetZoneConfig(2000, zonepb.ZoneConfig{RangeMaxBytes: proto.Int64(32 << 20)})
	config.TestingSetZoneConfig(2002, zonepb.ZoneConfig{RangeMaxBytes: proto.Int64(32 << 20)})

	testCases := []struct {
		start, end roachpb.RKey
		bytes      int64
		maxBytes   int64
		shouldQ    bool
		priority   float64
	}{
		// No intersection, no bytes, no load.
		{roachpb.RKeyMin, roachpb.RKey(keys.MetaMax), 0, 64 << 20, false, 0},
		// Intersection in zone, no bytes, no load.
		{roachpb.RKey(keys.SystemSQLCodec.TablePrefix(2001)), roachpb.RKeyMax, 0, 64 << 20, true, 1},
		// Already split at largest ID, no load.
		{roachpb.RKey(keys.SystemSQLCodec.TablePrefix(2002)), roachpb.RKeyMax, 0, 32 << 20, false, 0},
		// Multiple intersections, no bytes, no load.
		{roachpb.RKeyMin, roachpb.RKeyMax, 0, 64 << 20, true, 1},
		// No intersection, max bytes, no load.
		{roachpb.RKeyMin, roachpb.RKey(keys.MetaMax), 64 << 20, 64 << 20, false, 0},
		// No intersection, max bytes+1, no load.
		{roachpb.RKeyMin, roachpb.RKey(keys.MetaMax), 64<<20 + 1, 64 << 20, true, 1},
		// No intersection, max bytes * 2 + 2, no load, should backpressure.
		{roachpb.RKeyMin, roachpb.RKey(keys.MetaMax), 64<<21 + 2, 64 << 20, true, 52},
		// No intersection, max bytes * 4, no load, should not backpressure.
		{roachpb.RKeyMin, roachpb.RKey(keys.MetaMax), 64 << 22, 64 << 20, true, 4},
		// Intersection, max bytes +1, no load.
		{roachpb.RKey(keys.SystemSQLCodec.TablePrefix(2000)), roachpb.RKeyMax, 32<<20 + 1, 32 << 20, true, 2},
		// Split needed at table boundary, but no zone config, no load.
		{roachpb.RKey(keys.SystemSQLCodec.TablePrefix(2001)), roachpb.RKeyMax, 32<<20 + 1, 64 << 20, true, 1},
	}

	cfg, err := tc.store.GetConfReader(ctx)
	if err != nil {
		t.Fatal(err)
	}

	{
		// This test plays fast and loose and if there are raft commands ongoing then
		// we'll hit internal assertions in the tests below. Sending a write through
		// before mucking with internals and waiting for it to show up in the state
		// machine appears to be good enough.
		put := putArgs(tc.repl.Desc().EndKey.AsRawKey().Prevish(5), []byte("foo"))
		_, pErr := kv.SendWrapped(ctx, tc.Sender(), &put)
		require.NoError(t, pErr.GoError())
	}

	for i, test := range testCases {
		// Create a replica for testing that is not hooked up to the store. This
		// ensures that the store won't be mucking with our replica concurrently
		// during testing (e.g. via the system config gossip update).
		cpy := *tc.repl.Desc()
		cpy.StartKey = test.start
		cpy.EndKey = test.end
		replicaID := cpy.Replicas().VoterDescriptors()[0].ReplicaID
		require.NoError(t,
			logstore.NewStateLoader(cpy.RangeID).SetRaftReplicaID(ctx, tc.store.TODOEngine(), replicaID))
		repl, err := loadInitializedReplicaForTesting(ctx, tc.store, &cpy, replicaID)
		if err != nil {
			t.Fatal(err)
		}

		repl.mu.Lock()
		repl.mu.state.Stats = &enginepb.MVCCStats{KeyBytes: test.bytes}
		repl.mu.Unlock()
		conf := roachpb.TestingDefaultSpanConfig()
		conf.RangeMaxBytes = test.maxBytes
		repl.SetSpanConfig(conf)

		// Testing using shouldSplitRange instead of shouldQueue to avoid using the splitFinder
		// This tests the merge queue behavior too as a result. For splitFinder tests,
		// see split/split_test.go.
		shouldQ, priority := shouldSplitRange(ctx, repl.Desc(), repl.GetMVCCStats(),
			repl.GetMaxBytes(ctx), repl.ShouldBackpressureWrites(ctx), cfg)
		if shouldQ != test.shouldQ {
			t.Errorf("%d: should queue expected %t; got %t", i, test.shouldQ, shouldQ)
		}
		if math.Abs(priority-test.priority) > 0.00001 {
			t.Errorf("%d: priority expected %f; got %f", i, test.priority, priority)
		}
	}
}