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

     1  // Copyright 2020-2022 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 spatial
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  
    22  	"github.com/dolthub/go-mysql-server/sql"
    23  	"github.com/dolthub/go-mysql-server/sql/expression"
    24  	"github.com/dolthub/go-mysql-server/sql/types"
    25  )
    26  
    27  func TestMultiPolygon(t *testing.T) {
    28  	t.Run("create valid multipolygon", func(t *testing.T) {
    29  		require := require.New(t)
    30  		line := types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 0}, {X: 1, Y: 1}, {X: 0, Y: 0}}}
    31  		poly := types.Polygon{Lines: []types.LineString{line}}
    32  		f, err := NewMultiPolygon(expression.NewLiteral(poly, types.PolygonType{}))
    33  		require.NoError(err)
    34  
    35  		v, err := f.Eval(sql.NewEmptyContext(), nil)
    36  		require.NoError(err)
    37  		require.Equal(types.MultiPolygon{Polygons: []types.Polygon{poly}}, v)
    38  	})
    39  
    40  	t.Run("create valid multipolygon with multiple polygons", func(t *testing.T) {
    41  		require := require.New(t)
    42  		line1 := types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 0}, {X: 1, Y: 1}, {X: 0, Y: 0}}}
    43  		poly1 := types.Polygon{Lines: []types.LineString{line1}}
    44  		line2 := types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 0, Y: 1}, {X: 1, Y: 1}, {X: 0, Y: 0}}}
    45  		poly2 := types.Polygon{Lines: []types.LineString{line2}}
    46  		f, err := NewMultiPolygon(
    47  			expression.NewLiteral(poly1, types.PolygonType{}),
    48  			expression.NewLiteral(poly2, types.PolygonType{}),
    49  		)
    50  		require.NoError(err)
    51  
    52  		v, err := f.Eval(sql.NewEmptyContext(), nil)
    53  		require.NoError(err)
    54  		require.Equal(types.MultiPolygon{Polygons: []types.Polygon{poly1, poly2}}, v)
    55  	})
    56  }
    57  
    58  func TestNewMultiPolygon(t *testing.T) {
    59  	require := require.New(t)
    60  	_, err := NewMultiPolygon(expression.NewLiteral(nil, types.PolygonType{}),
    61  		expression.NewLiteral(nil, types.PolygonType{}),
    62  		expression.NewLiteral(nil, types.PolygonType{}),
    63  	)
    64  	require.NoError(err)
    65  }