forked from pingcap/tidb
/
require.go
89 lines (79 loc) · 2.43 KB
/
require.go
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// Copyright 2021 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build !codes
package testutil
import (
"math/rand"
"testing"
"github.com/stretchr/testify/require"
"github.com/twotigers93/tidb/kv"
"github.com/twotigers93/tidb/sessionctx/stmtctx"
"github.com/twotigers93/tidb/types"
"github.com/twotigers93/tidb/util/collate"
)
// DatumEqual verifies that the actual value is equal to the expected value. For string datum, they are compared by the binary collation.
func DatumEqual(t testing.TB, expected, actual types.Datum, msgAndArgs ...interface{}) {
sc := new(stmtctx.StatementContext)
res, err := actual.Compare(sc, &expected, collate.GetBinaryCollator())
require.NoError(t, err, msgAndArgs)
require.Zero(t, res, msgAndArgs)
}
// HandleEqual verifies that the actual handle is equal to the expected handle.
func HandleEqual(t testing.TB, expected, actual kv.Handle, msgAndArgs ...interface{}) {
require.Equal(t, expected.IsInt(), actual.IsInt(), msgAndArgs)
require.Equal(t, expected.String(), actual.String(), msgAndArgs)
}
// CompareUnorderedStringSlice compare two string slices.
// If a and b is exactly the same except the order, it returns true.
// In otherwise return false.
func CompareUnorderedStringSlice(a []string, b []string) bool {
if a == nil && b == nil {
return true
}
if a == nil || b == nil {
return false
}
if len(a) != len(b) {
return false
}
m := make(map[string]int, len(a))
for _, i := range a {
_, ok := m[i]
if !ok {
m[i] = 1
} else {
m[i]++
}
}
for _, i := range b {
_, ok := m[i]
if !ok {
return false
}
m[i]--
if m[i] == 0 {
delete(m, i)
}
}
return len(m) == 0
}
var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
// RandStringRunes generate random string of length n.
func RandStringRunes(n int) string {
b := make([]rune, n)
for i := range b {
b[i] = letterRunes[rand.Intn(len(letterRunes))]
}
return string(b)
}