tuple_test.go

// Copyright 2022 Dolthub, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package types

import (
	"fmt"
	"testing"

	"github.com/dolthub/vitess/go/sqltypes"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"github.com/dolthub/go-mysql-server/sql"
)

func TestTuple(t *testing.T) {
	ctx := sql.NewEmptyContext()
	require := require.New(t)

	typ := CreateTuple(Int32, LongText, Int64)
	_, _, err := typ.Convert(ctx, "foo")
	require.Error(err)
	require.True(sql.ErrNotTuple.Is(err))

	_, _, err = typ.Convert(ctx, []interface{}{1, 2})
	require.Error(err)
	require.True(sql.ErrInvalidColumnNumber.Is(err))

	conVal, _, err := typ.Convert(ctx, []interface{}{1, 2, 3})
	require.NoError(err)
	assert.Equal(t, []interface{}{int32(1), "2", int64(3)}, conVal)

	_, err = typ.SQL(sql.NewEmptyContext(), nil, nil)
	require.Error(err)

	require.Equal(sqltypes.Expression, typ.Type())

	comparisons := []struct {
		val1        []interface{}
		val2        []interface{}
		expectedCmp int
	}{
		{[]interface{}{1, 2, 3}, []interface{}{2, 2, 3}, -1},
		{[]interface{}{1, 2, 3}, []interface{}{1, 3, 3}, -1},
		{[]interface{}{1, 2, 3}, []interface{}{1, 2, 4}, -1},
		{[]interface{}{1, 2, 3}, []interface{}{1, 2, 3}, 0},
		{[]interface{}{2, 2, 3}, []interface{}{1, 2, 3}, 1},
		{[]interface{}{1, 3, 3}, []interface{}{1, 2, 3}, 1},
		{[]interface{}{1, 2, 4}, []interface{}{1, 2, 3}, 1},
	}

	for _, comparison := range comparisons {
		t.Run(fmt.Sprintf("%v %v", comparison.val1, comparison.val2), func(t *testing.T) {
			cmp, err := typ.Compare(ctx, comparison.val1, comparison.val2)
			require.NoError(err)
			assert.Equal(t, comparison.expectedCmp, cmp)
		})
	}
}