github.com/dolthub/go-mysql-server@v0.18.0/sql/expression/function/aggregation/common_test.go (about)

     1  // Copyright 2020-2021 Dolthub, Inc.
     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 aggregation
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  
    22  	"github.com/dolthub/go-mysql-server/sql"
    23  )
    24  
    25  func eval(t *testing.T, e sql.Expression, row sql.Row) interface{} {
    26  	t.Helper()
    27  
    28  	ctx := sql.NewEmptyContext()
    29  	v, err := e.Eval(ctx, row)
    30  	require.NoError(t, err)
    31  	return v
    32  }
    33  
    34  func evalBuffer(t *testing.T, buf sql.AggregationBuffer) interface{} {
    35  	t.Helper()
    36  
    37  	ctx := sql.NewEmptyContext()
    38  	v, err := buf.Eval(ctx)
    39  	require.NoError(t, err)
    40  	return v
    41  }
    42  
    43  func aggregate(t *testing.T, agg sql.Aggregation, rows ...sql.Row) interface{} {
    44  	t.Helper()
    45  
    46  	ctx := sql.NewEmptyContext()
    47  	buf, _ := agg.NewBuffer()
    48  	for _, row := range rows {
    49  		require.NoError(t, buf.Update(ctx, row))
    50  	}
    51  	return evalBuffer(t, buf)
    52  }