github.com/ecodeclub/eorm@v0.0.2-0.20231001112437-dae71da914d0/internal/merger/aggregatemerger/aggregator/sum_test.go (about)

     1  // Copyright 2021 ecodeclub
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  // http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package aggregator
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/ecodeclub/eorm/internal/merger"
    21  
    22  	"github.com/ecodeclub/eorm/internal/merger/internal/errs"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  )
    26  
    27  func TestSum_Aggregate(t *testing.T) {
    28  	testcases := []struct {
    29  		name     string
    30  		input    [][]any
    31  		wantVal  any
    32  		wantErr  error
    33  		sumIndex int
    34  	}{
    35  		{
    36  			name: "sum正常合并",
    37  			input: [][]any{
    38  				{
    39  					int64(10),
    40  				},
    41  				{
    42  					int64(20),
    43  				},
    44  				{
    45  					int64(30),
    46  				},
    47  			},
    48  			wantVal:  int64(60),
    49  			sumIndex: 0,
    50  		},
    51  
    52  		{
    53  			name: "传入的参数非AggregateElement类型",
    54  			input: [][]any{
    55  				{
    56  					"1",
    57  				},
    58  				{
    59  					"3",
    60  				},
    61  			},
    62  			wantErr:  errs.ErrMergerAggregateFuncNotFound,
    63  			sumIndex: 0,
    64  		},
    65  		{
    66  			name: "columnInfo的index不合法",
    67  			input: [][]any{
    68  				{
    69  					int64(10),
    70  				},
    71  				{
    72  					int64(20),
    73  				},
    74  				{
    75  					int64(30),
    76  				},
    77  			},
    78  			sumIndex: 20,
    79  			wantErr:  errs.ErrMergerInvalidAggregateColumnIndex,
    80  		},
    81  	}
    82  	for _, tc := range testcases {
    83  		t.Run(tc.name, func(t *testing.T) {
    84  			sum := NewSum(merger.NewColumnInfo(tc.sumIndex, "SUM(id)"))
    85  			val, err := sum.Aggregate(tc.input)
    86  			assert.Equal(t, tc.wantErr, err)
    87  			if err != nil {
    88  				return
    89  			}
    90  			assert.Equal(t, tc.wantVal, val)
    91  			assert.Equal(t, "SUM(id)", sum.ColumnName())
    92  		})
    93  	}
    94  
    95  }