sql: use test rand in tests

pkg/sql/rowexec/BUILD.bazel

@@ -211,7 +211,6 @@ go_test(
         "//pkg/util/randutil",
         "//pkg/util/stop",
         "//pkg/util/syncutil",
-        "//pkg/util/timeutil",
         "//pkg/util/tracing",
         "//pkg/util/tracing/tracingpb",
         "@com_github_axiomhq_hyperloglog//:hyperloglog",

pkg/sql/rowexec/sorter_test.go

@@ -8,7 +8,6 @@ package rowexec
 import (
 	"context"
 	"fmt"
-	"math/rand"
 	"testing"
 
 	"github.com/cockroachdb/cockroach/pkg/base"
@@ -27,7 +26,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/util/encoding"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
-	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 )
 
 func TestSorter(t *testing.T) {
@@ -407,7 +406,7 @@ func BenchmarkSortAll(b *testing.B) {
 		DiskMonitor: diskMonitor,
 	}
 
-	rng := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	spec := execinfrapb.SorterSpec{OutputOrdering: twoColOrdering}
 	post := execinfrapb.PostProcessSpec{}
 
@@ -451,7 +450,7 @@ func BenchmarkSortLimit(b *testing.B) {
 		DiskMonitor: diskMonitor,
 	}
 
-	rng := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	spec := execinfrapb.SorterSpec{OutputOrdering: twoColOrdering}
 
 	const numRows = 1 << 16
@@ -500,7 +499,7 @@ func BenchmarkSortChunks(b *testing.B) {
 		DiskMonitor: diskMonitor,
 	}
 
-	rng := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	spec := execinfrapb.SorterSpec{
 		OutputOrdering:   twoColOrdering,
 		OrderingMatchLen: 1,

pkg/sql/run_control_test.go

@@ -9,7 +9,6 @@ import (
 	"context"
 	gosql "database/sql"
 	"fmt"
-	"math/rand"
 	"net/url"
 	"strings"
 	"sync"
@@ -37,6 +36,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/util/buildutil"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
 	"github.com/cockroachdb/errors"
 	"github.com/lib/pq"
@@ -58,7 +58,7 @@ func TestCancelDistSQLQuery(t *testing.T) {
 
 	var queryLatency *time.Duration
 	sem := make(chan struct{}, 1)
-	rng := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	tc := serverutils.StartCluster(t, 2, /* numNodes */
 		base.TestClusterArgs{
 			ReplicationMode: base.ReplicationManual,

pkg/sql/schema_changer_test.go

@@ -4991,10 +4991,10 @@ CREATE TABLE t.test (k INT PRIMARY KEY, v JSON);
 
 	tableDesc = desctestutils.TestingGetPublicTableDescriptor(kvDB, keys.SystemSQLCodec, "t", "test")
 
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	// Insert enough rows to exceed the chunk size.
 	for i := 0; i < maxValue+1; i++ {
-		jsonVal, err := json.Random(20, r)
+		jsonVal, err := json.Random(20, rng)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -5038,14 +5038,14 @@ CREATE TABLE t.test (a INT, b INT, c JSON, d JSON);
 		t.Fatal(err)
 	}
 
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	// Insert enough rows to exceed the chunk size.
 	for i := 0; i < maxValue+1; i++ {
-		jsonVal1, err := json.Random(20, r)
+		jsonVal1, err := json.Random(20, rng)
 		if err != nil {
 			t.Fatal(err)
 		}
-		jsonVal2, err := json.Random(20, r)
+		jsonVal2, err := json.Random(20, rng)
 		if err != nil {
 			t.Fatal(err)
 		}

pkg/sql/sem/builtins/datums_to_bytes_builtin_test.go

@@ -8,7 +8,6 @@ package builtins_test
 import (
 	"context"
 	"fmt"
-	"math/rand"
 	"strings"
 	"testing"
 
@@ -21,7 +20,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/util"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
-	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 	"github.com/stretchr/testify/require"
 )
 
@@ -51,7 +50,7 @@ func TestCrdbInternalDatumsToBytes(t *testing.T) {
 		"STRING[]",
 		"INT[]",
 	}
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	createTable := func(t *testing.T, tdb *sqlutils.SQLRunner, typ []string) (columnNames []string) {
 		columnNames = make([]string, len(typ))
 		columnSpecs := make([]string, len(typ))
@@ -89,7 +88,7 @@ func TestCrdbInternalDatumsToBytes(t *testing.T) {
 					d = tree.DNull
 				} else {
 					const nullOk = false
-					d = randgen.RandDatum(r, col.GetType(), nullOk)
+					d = randgen.RandDatum(rng, col.GetType(), nullOk)
 				}
 				row = append(row, tree.AsStringWithFlags(d, tree.FmtParsable))
 			}
@@ -127,10 +126,10 @@ SELECT (SELECT count(DISTINCT (cols)) FROM t) -
 		const numCombinations = 10
 		for i := 0; i < numCombinations; i++ {
 			t.Run("", func(t *testing.T) {
-				numColumns := r.Intn(len(types)*3) + 1 // arbitrary, at least 1
+				numColumns := rng.Intn(len(types)*3) + 1 // arbitrary, at least 1
 				colTypes := make([]string, numColumns)
 				for i := range colTypes {
-					colTypes[i] = types[r.Intn(len(types))]
+					colTypes[i] = types[rng.Intn(len(types))]
 				}
 				testTableWithColumnTypes(t, colTypes...)
 			})

pkg/sql/sem/builtins/pgformat/BUILD.bazel

@@ -41,7 +41,6 @@ go_test(
         "//pkg/util/leaktest",
         "//pkg/util/log",
         "//pkg/util/randutil",
-        "//pkg/util/timeutil",
         "@com_github_lib_pq//oid",
         "@com_github_stretchr_testify//require",
     ],

pkg/sql/sem/builtins/pgformat/format_test.go

@@ -26,7 +26,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/util"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
-	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 	"github.com/lib/pq/oid"
 	"github.com/stretchr/testify/require"
 )
@@ -67,10 +67,10 @@ func TestFormat(t *testing.T) {
 		}
 	}
 
-	seed := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	createTable := func(t *testing.T, tdb *sqlutils.SQLRunner, typ *types.T) (tableNamer func(string) string) {
 		columnSpec := fmt.Sprintf("c %s", typ.SQLString())
-		tableName := fmt.Sprintf("%s_table_%d", strings.Replace(typ.String(), "\"", "", -1), seed.Int())
+		tableName := fmt.Sprintf("%s_table_%d", strings.Replace(typ.String(), "\"", "", -1), rng.Int())
 		tableName = strings.Replace(tableName, `[]`, `_array`, -1)
 
 		// Create the table.
@@ -96,7 +96,7 @@ func TestFormat(t *testing.T) {
 					d = tree.DNull
 				} else {
 					const nullOk = false
-					d = randgen.RandDatum(seed, col.GetType(), nullOk)
+					d = randgen.RandDatum(rng, col.GetType(), nullOk)
 				}
 				row = append(row, tree.AsStringWithFlags(d, tree.FmtParsable))
 			}

pkg/sql/sem/eval/window_funcs_test.go

@@ -19,7 +19,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/sql/types"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
-	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 )
 
 const minOffset = 0
@@ -266,11 +266,11 @@ func testEndFollowing(t *testing.T, evalCtx *Context, wfr *WindowFrameRun, offse
 
 func makeIntSortedPartition(count int) indexedRows {
 	partition := indexedRows{rows: make([]indexedRow, count)}
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	number := 0
 	for idx := 0; idx < count; idx++ {
-		if r.Float64() < probabilityOfNewNumber {
-			number += r.Intn(10)
+		if rng.Float64() < probabilityOfNewNumber {
+			number += rng.Intn(10)
 		}
 		partition.rows[idx] = indexedRow{idx: idx, row: tree.Datums{tree.NewDInt(tree.DInt(number))}}
 	}
@@ -279,11 +279,11 @@ func makeIntSortedPartition(count int) indexedRows {
 
 func makeFloatSortedPartition(count int) indexedRows {
 	partition := indexedRows{rows: make([]indexedRow, count)}
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	number := 0.0
 	for idx := 0; idx < count; idx++ {
-		if r.Float64() < probabilityOfNewNumber {
-			number += r.Float64() * 10
+		if rng.Float64() < probabilityOfNewNumber {
+			number += rng.Float64() * 10
 		}
 		partition.rows[idx] = indexedRow{idx: idx, row: tree.Datums{tree.NewDFloat(tree.DFloat(number))}}
 	}
@@ -292,12 +292,12 @@ func makeFloatSortedPartition(count int) indexedRows {
 
 func makeDecimalSortedPartition(t *testing.T, count int) indexedRows {
 	partition := indexedRows{rows: make([]indexedRow, count)}
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	number := &tree.DDecimal{}
 	for idx := 0; idx < count; idx++ {
 		tmp := apd.Decimal{}
-		if r.Float64() < probabilityOfNewNumber {
-			_, err := tmp.SetFloat64(r.Float64() * 10)
+		if rng.Float64() < probabilityOfNewNumber {
+			_, err := tmp.SetFloat64(rng.Float64() * 10)
 			if err != nil {
 				t.Fatalf("unexpected error: %v", err)
 			}

pkg/sql/tests/inverted_index_test.go

@@ -16,7 +16,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/util/json"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
-	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 )
 
 const numRandomJSONs = 1000
@@ -37,14 +37,14 @@ func TestInvertedIndex(t *testing.T) {
 	db.Exec(t, "CREATE DATABASE IF NOT EXISTS test")
 	db.Exec(t, "CREATE TABLE test.jsons (i INT PRIMARY KEY, j JSONB)")
 
-	r := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 
 	// Grab a bunch of random JSONs. We insert half before we add the inverted
 	// index and half after.
 	jsons := make([]json.JSON, numRandomJSONs)
 	for i := 0; i < numRandomJSONs; i++ {
 		var err error
-		jsons[i], err = json.Random(jsonComplexity, r)
+		jsons[i], err = json.Random(jsonComplexity, rng)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -82,7 +82,7 @@ func TestInvertedIndex(t *testing.T) {
 	perm := rand.Perm(len(jsons))
 	for i := 0; i < docsToUpdate; i++ {
 		var err error
-		jsons[perm[i]], err = json.Random(jsonComplexity, r)
+		jsons[perm[i]], err = json.Random(jsonComplexity, rng)
 		if err != nil {
 			t.Fatal(err)
 		}

pkg/sql/tests/random_schema_test.go

@@ -10,7 +10,6 @@ import (
 	gosql "database/sql"
 	"fmt"
 	"math"
-	"math/rand"
 	"testing"
 
 	"github.com/cockroachdb/cockroach/pkg/base"
@@ -22,7 +21,7 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/testutils/serverutils"
 	"github.com/cockroachdb/cockroach/pkg/util/leaktest"
 	"github.com/cockroachdb/cockroach/pkg/util/log"
-	"github.com/cockroachdb/cockroach/pkg/util/timeutil"
+	"github.com/cockroachdb/cockroach/pkg/util/randutil"
 )
 
 func setDb(t *testing.T, db *gosql.DB, name string) {
@@ -56,7 +55,7 @@ func TestCreateRandomSchema(t *testing.T) {
 		return tree.AsStringWithFlags(c, tree.FmtParsable)
 	}
 
-	rng := rand.New(rand.NewSource(timeutil.Now().UnixNano()))
+	rng, _ := randutil.NewTestRand()
 	for i := 0; i < 100; i++ {
 		createTable := randgen.RandCreateTable(ctx, rng, "table", i, randgen.TableOptNone)
 		setDb(t, db, "test")