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