66 lines
2.0 KiB
Go
66 lines
2.0 KiB
Go
// Copyright 2020 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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package executor
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import (
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"testing"
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"github.com/pingcap/tidb/pkg/expression"
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"github.com/pingcap/tidb/pkg/parser/mysql"
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"github.com/pingcap/tidb/pkg/types"
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"github.com/pingcap/tidb/pkg/util/chunk"
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"github.com/pingcap/tidb/pkg/util/mock"
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"github.com/stretchr/testify/require"
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)
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func TestPartitionRangeSplitter(t *testing.T) {
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ctx := mock.NewContext()
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concurrency := 2
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tp := types.NewFieldTypeBuilder().SetType(mysql.TypeVarchar).BuildP()
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col0 := &expression.Column{
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RetType: tp,
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Index: 0,
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}
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byItems := []expression.Expression{col0}
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input := chunk.New([]*types.FieldType{tp}, 1024, 1024)
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input.Reset()
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input.Column(0).AppendString("a")
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input.Column(0).AppendString("a")
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input.Column(0).AppendString("a")
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input.Column(0).AppendString("a")
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input.Column(0).AppendString("c")
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input.Column(0).AppendString("c")
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input.Column(0).AppendString("b")
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input.Column(0).AppendString("b")
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input.Column(0).AppendString("b")
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input.Column(0).AppendString("q")
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input.Column(0).AppendString("eee")
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input.Column(0).AppendString("eee")
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input.Column(0).AppendString("ddd")
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expected := []int{0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1}
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obtained := make([]int, 0)
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splitter := buildPartitionRangeSplitter(ctx, concurrency, byItems)
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obtained, err := splitter.split(ctx, input, obtained)
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require.NoError(t, err)
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require.Len(t, obtained, len(expected))
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for i := 0; i < len(obtained); i++ {
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require.Equal(t, expected[i], obtained[i])
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}
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}
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