github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/kv/kvnemesis/applier_test.go (about)

     1  // Copyright 2020 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package kvnemesis
    12  
    13  import (
    14  	"context"
    15  	"regexp"
    16  	"strings"
    17  	"testing"
    18  
    19  	"github.com/cockroachdb/cockroach/pkg/base"
    20  	"github.com/cockroachdb/cockroach/pkg/testutils/testcluster"
    21  	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
    22  	"github.com/stretchr/testify/assert"
    23  	"github.com/stretchr/testify/require"
    24  )
    25  
    26  func TestApplier(t *testing.T) {
    27  	defer leaktest.AfterTest(t)()
    28  
    29  	ctx := context.Background()
    30  	tc := testcluster.StartTestCluster(t, 1, base.TestClusterArgs{})
    31  	defer tc.Stopper().Stop(ctx)
    32  	db := tc.Server(0).DB()
    33  
    34  	a := MakeApplier(db, db)
    35  	check := func(t *testing.T, s Step, expected string) {
    36  		t.Helper()
    37  		require.NoError(t, a.Apply(ctx, &s))
    38  		actual := s.String()
    39  		// Trim out the txn stuff. It has things like timestamps in it that are not
    40  		// stable from run to run.
    41  		actual = regexp.MustCompile(` // nil txnpb:\(.*\)`).ReplaceAllString(actual, ` // nil txnpb:(...)`)
    42  		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(actual))
    43  	}
    44  	checkErr := func(t *testing.T, s Step, expected string) {
    45  		t.Helper()
    46  		cancelledCtx, cancel := context.WithCancel(context.Background())
    47  		cancel()
    48  		require.NoError(t, a.Apply(cancelledCtx, &s))
    49  		assert.Equal(t, strings.TrimSpace(expected), strings.TrimSpace(s.String()))
    50  	}
    51  
    52  	// Basic operations
    53  	check(t, step(get(`a`)), `db0.Get(ctx, "a") // (nil, nil)`)
    54  
    55  	check(t, step(put(`a`, `1`)), `db1.Put(ctx, "a", 1) // nil`)
    56  	check(t, step(get(`a`)), `db0.Get(ctx, "a") // ("1", nil)`)
    57  
    58  	checkErr(t, step(get(`a`)), `db1.Get(ctx, "a") // (nil, aborted in distSender: context canceled)`)
    59  	checkErr(t, step(put(`a`, `1`)), `db0.Put(ctx, "a", 1) // aborted in distSender: context canceled`)
    60  
    61  	// Batch
    62  	check(t, step(batch(put(`b`, `2`), get(`a`))), `
    63  {
    64    b := &Batch{}
    65    b.Put(ctx, "b", 2) // nil
    66    b.Get(ctx, "a") // ("1", nil)
    67    db1.Run(ctx, b) // nil
    68  }
    69  `)
    70  	checkErr(t, step(batch(put(`b`, `2`), get(`a`))), `
    71  {
    72    b := &Batch{}
    73    b.Put(ctx, "b", 2) // aborted in distSender: context canceled
    74    b.Get(ctx, "a") // (nil, aborted in distSender: context canceled)
    75    db0.Run(ctx, b) // aborted in distSender: context canceled
    76  }
    77  `)
    78  
    79  	// Txn commit
    80  	check(t, step(closureTxn(ClosureTxnType_Commit, put(`e`, `5`), batch(put(`f`, `6`)))), `
    81  db1.Txn(ctx, func(ctx context.Context, txn *kv.Txn) error {
    82    txn.Put(ctx, "e", 5) // nil
    83    {
    84      b := &Batch{}
    85      b.Put(ctx, "f", 6) // nil
    86      txn.Run(ctx, b) // nil
    87    }
    88    return nil
    89  }) // nil txnpb:(...)
    90  		`)
    91  
    92  	// Txn commit in batch
    93  	check(t, step(closureTxnCommitInBatch(opSlice(get(`a`), put(`f`, `6`)), put(`e`, `5`))), `
    94  db0.Txn(ctx, func(ctx context.Context, txn *kv.Txn) error {
    95    txn.Put(ctx, "e", 5) // nil
    96    b := &Batch{}
    97    b.Get(ctx, "a") // ("1", nil)
    98    b.Put(ctx, "f", 6) // nil
    99    txn.CommitInBatch(ctx, b) // nil
   100    return nil
   101  }) // nil txnpb:(...)
   102  		`)
   103  
   104  	// Txn rollback
   105  	check(t, step(closureTxn(ClosureTxnType_Rollback, put(`e`, `5`))), `
   106  db1.Txn(ctx, func(ctx context.Context, txn *kv.Txn) error {
   107    txn.Put(ctx, "e", 5) // nil
   108    return errors.New("rollback")
   109  }) // rollback
   110  		`)
   111  
   112  	// Txn error
   113  	checkErr(t, step(closureTxn(ClosureTxnType_Rollback, put(`e`, `5`))), `
   114  db0.Txn(ctx, func(ctx context.Context, txn *kv.Txn) error {
   115    txn.Put(ctx, "e", 5)
   116    return errors.New("rollback")
   117  }) // context canceled
   118  		`)
   119  
   120  	// Splits and merges
   121  	check(t, step(split(`foo`)), `db1.AdminSplit(ctx, "foo") // nil`)
   122  	check(t, step(merge(`foo`)), `db0.AdminMerge(ctx, "foo") // nil`)
   123  	checkErr(t, step(split(`foo`)),
   124  		`db1.AdminSplit(ctx, "foo") // aborted in distSender: context canceled`)
   125  	checkErr(t, step(merge(`foo`)),
   126  		`db0.AdminMerge(ctx, "foo") // aborted in distSender: context canceled`)
   127  }