/
twkb_test.go
147 lines (105 loc) · 3.43 KB
/
twkb_test.go
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/*
Copyright [2015] Alex Davies-Moore
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 twkb
import (
"bytes"
"encoding/hex"
"testing"
"github.com/stretchr/testify/assert"
)
func TestDecodePoint(t *testing.T) {
data, _ := hex.DecodeString("01000204")
geom, err := Decode(bytes.NewReader(data))
if err != nil {
t.Fatalf("Failed to decode point geometry: err = %s", err)
}
t.Logf("Geom: %+v\n", geom)
p, ok := geom.(*Point)
if !ok {
t.Fatalf("Expected Point geometry")
}
assert.Equal(t, POINT, p.Type())
assert.Equal(t, XY, p.Dim())
assert.InDelta(t, 1, p.Coord[0], 1e-6)
assert.InDelta(t, 2, p.Coord[1], 1e-6)
}
func TestDecodeLineString(t *testing.T) {
data, _ := hex.DecodeString("02000202020808")
geom, err := Decode(bytes.NewReader(data))
if err != nil {
t.Fatalf("Failed to decode point geometry: err = %s", err)
}
t.Logf("Geom: %+v\n", geom)
p, ok := geom.(*LineString)
if !ok {
t.Fatalf("Expected LineString geometry")
}
assert.Equal(t, LINESTRING, p.Type())
assert.Equal(t, XY, p.Dim())
assert.Equal(t, 2, len(p.Coords))
assert.InDelta(t, 1, p.Coords[0][0], 1e-6)
assert.InDelta(t, 1, p.Coords[0][1], 1e-6)
assert.InDelta(t, 5, p.Coords[1][0], 1e-6)
assert.InDelta(t, 5, p.Coords[1][1], 1e-6)
}
func TestDecodePolygon(t *testing.T) {
data, _ := hex.DecodeString("03031b000400040205000004000004030000030500000002020000010100")
geom, err := Decode(bytes.NewReader(data))
if err != nil {
t.Fatalf("Failed to decode point geometry: err = %s", err)
}
t.Logf("Geom: %+v\n", geom)
p, ok := geom.(*Polygon)
if !ok {
t.Fatalf("Expected Polygon geometry")
}
assert.Equal(t, POLYGON, p.Type())
assert.Equal(t, XY, p.Dim())
assert.Equal(t, 2, len(p.Rings))
// assert.InDelta(t, 1, p.Coords[0][0], 1e-6)
// assert.InDelta(t, 1, p.Coords[0][1], 1e-6)
//
// assert.InDelta(t, 5, p.Coords[1][0], 1e-6)
// assert.InDelta(t, 5, p.Coords[1][1], 1e-6)
}
func TestDecodeMultiPoint(t *testing.T) {
data, _ := hex.DecodeString("04070b0004020402000200020404")
geom, err := Decode(bytes.NewReader(data))
if err != nil {
t.Fatalf("Failed to decode multipoint geometry: err = %s", err)
}
t.Logf("Geom: %+v\n", geom)
p, ok := geom.(*MultiPoint)
if !ok {
t.Fatalf("Expected Polygon geometry")
}
assert.Equal(t, MULTIPOINT, p.Type())
assert.Equal(t, XY, p.Dim())
}
func TestDecodeGeometryCollection(t *testing.T) {
data, _ := hex.DecodeString("070402000201000002020002080a0404")
geom, err := Decode(bytes.NewReader(data))
if err != nil {
t.Fatalf("Failed to decode geom collection: err = %s", err)
}
t.Logf("Geom: %+v\n", geom)
p, ok := geom.(*GeometryCollection)
if !ok {
t.Fatalf("Expected Polygon geometry")
}
assert.Equal(t, GEOMETRYCOLLECTION, p.Type())
assert.Equal(t, XY, p.Dim())
assert.Equal(t, 2, len(p.Geometries))
t.Logf("Geom 0: %+v: POINT ? = %+v\n", p.Geometries[0], p.Geometries[0].Type() == POINT)
t.Logf("Geom 0: %+v: LINESTRING ? = %+v\n", p.Geometries[1], p.Geometries[1].Type() == LINESTRING)
}