github.com/dolthub/go-mysql-server@v0.18.0/sql/expression/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 expression
    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  	v, err := e.Eval(sql.NewEmptyContext(), row)
    28  	require.NoError(t, err)
    29  	return v
    30  }
    31  
    32  func TestIsUnary(t *testing.T) {
    33  	require := require.New(t)
    34  	require.True(IsUnary(NewNot(nil)))
    35  	require.False(IsUnary(NewAnd(nil, nil)))
    36  }
    37  
    38  func TestIsBinary(t *testing.T) {
    39  	require := require.New(t)
    40  	require.False(IsBinary(NewNot(nil)))
    41  	require.True(IsBinary(NewAnd(nil, nil)))
    42  }