github.com/dolthub/go-mysql-server@v0.18.0/sql/expression/function/spatial/polygon_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 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 TestPolygon(t *testing.T) {
    28  	t.Run("create valid polygon", func(t *testing.T) {
    29  		require := require.New(t)
    30  		f, err := NewPolygon(expression.NewLiteral(types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 1}, {X: 1, Y: 0}, {X: 0, Y: 0}}}, types.LineStringType{}))
    31  		require.NoError(err)
    32  
    33  		v, err := f.Eval(sql.NewEmptyContext(), nil)
    34  		require.NoError(err)
    35  		require.Equal(types.Polygon{Lines: []types.LineString{{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 1}, {X: 1, Y: 0}, {X: 0, Y: 0}}}}}, v)
    36  	})
    37  
    38  	t.Run("create valid polygon with multiple linestrings", func(t *testing.T) {
    39  		require := require.New(t)
    40  		f, err := NewPolygon(expression.NewLiteral(types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 1}, {X: 1, Y: 0}, {X: 0, Y: 0}}}, types.LineStringType{}),
    41  			expression.NewLiteral(types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 0}, {X: 1, Y: 1}, {X: 0, Y: 0}}}, types.LineStringType{}),
    42  			expression.NewLiteral(types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 0}, {X: 1, Y: 1}, {X: 0, Y: 1}, {X: 0, Y: 0}}}, types.LineStringType{}))
    43  		require.NoError(err)
    44  
    45  		v, err := f.Eval(sql.NewEmptyContext(), nil)
    46  		require.NoError(err)
    47  		require.Equal(types.Polygon{Lines: []types.LineString{{Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 1}, {X: 1, Y: 0}, {X: 0, Y: 0}}}, {Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 0}, {X: 1, Y: 1}, {X: 0, Y: 0}}}, {Points: []types.Point{{X: 0, Y: 0}, {X: 1, Y: 0}, {X: 1, Y: 1}, {X: 0, Y: 1}, {X: 0, Y: 0}}}}}, v)
    48  	})
    49  
    50  	t.Run("create invalid using invalid linestring", func(t *testing.T) {
    51  		require := require.New(t)
    52  		f, err := NewPolygon(expression.NewLiteral(types.LineString{Points: []types.Point{{X: 0, Y: 0}}}, types.LineStringType{}))
    53  		require.NoError(err)
    54  
    55  		_, err = f.Eval(sql.NewEmptyContext(), nil)
    56  		require.Error(err)
    57  	})
    58  
    59  	t.Run("create invalid using non-linearring linestring", func(t *testing.T) {
    60  		require := require.New(t)
    61  		f, err := NewPolygon(expression.NewLiteral(types.LineString{Points: []types.Point{{X: 0, Y: 0}, {X: 0, Y: 0}}}, types.LineStringType{}))
    62  		require.NoError(err)
    63  
    64  		_, err = f.Eval(sql.NewEmptyContext(), nil)
    65  		require.Error(err)
    66  	})
    67  }
    68  
    69  func TestNewPolygon(t *testing.T) {
    70  	require := require.New(t)
    71  	_, err := NewPolygon(expression.NewLiteral(nil, types.LineStringType{}),
    72  		expression.NewLiteral(nil, types.LineStringType{}),
    73  		expression.NewLiteral(nil, types.LineStringType{}),
    74  	)
    75  	require.NoError(err)
    76  }