PostGIS 3.0.6dev-r@@SVN_REVISION@@
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cu_out_geojson.c
Go to the documentation of this file.
1/**********************************************************************
2 *
3 * PostGIS - Spatial Types for PostgreSQL
4 * http://postgis.net
5 * Copyright 2010 Olivier Courtin <olivier.courtin@oslandia.com>
6 *
7 * This is free software; you can redistribute and/or modify it under
8 * the terms of the GNU General Public Licence. See the COPYING file.
9 *
10 **********************************************************************/
11
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include "CUnit/Basic.h"
16
17#include "liblwgeom_internal.h"
18#include "cu_tester.h"
19
20static void do_geojson_test(char * in, char * out, char * srs, int precision, int has_bbox)
21{
22 LWGEOM *g;
23 char * h;
24
25 g = lwgeom_from_wkt(in, LW_PARSER_CHECK_NONE);
26 h = lwgeom_to_geojson(g, srs, precision, has_bbox);
27
28 if (strcmp(h, out))
29 fprintf(stderr, "\nIn: %s\nOut: %s\nTheo: %s\n", in, h, out);
30
31 CU_ASSERT_STRING_EQUAL(h, out);
32
33 lwgeom_free(g);
34 lwfree(h);
35}
36
37
38static void do_geojson_unsupported(char * in, char * out)
39{
40 LWGEOM *g;
41 char *h;
42
43 g = lwgeom_from_wkt(in, LW_PARSER_CHECK_NONE);
44 h = lwgeom_to_geojson(g, NULL, 0, 0);
45
46 if (strcmp(cu_error_msg, out))
47 fprintf(stderr, "\nIn: %s\nOut: %s\nTheo: %s\n",
48 in, cu_error_msg, out);
49
50 CU_ASSERT_STRING_EQUAL(out, cu_error_msg);
51 cu_error_msg_reset();
52
53 lwfree(h);
54 lwgeom_free(g);
55}
56
57
58static void out_geojson_test_precision(void)
59{
60 /* 0 precision, i.e a round */
61 do_geojson_test(
62 "POINT(1.1111111111111 1.1111111111111)",
63 "{\"type\":\"Point\",\"coordinates\":[1,1]}",
64 NULL, 0, 0);
65
66 /* 3 digits precision */
67 do_geojson_test(
68 "POINT(1.1111111111111 1.1111111111111)",
69 "{\"type\":\"Point\",\"coordinates\":[1.111,1.111]}",
70 NULL, 3, 0);
71
72 /* 9 digits precision */
73 do_geojson_test(
74 "POINT(1.2345678901234 1.2345678901234)",
75 "{\"type\":\"Point\",\"coordinates\":[1.23456789,1.23456789]}",
76 NULL, 9, 0);
77
78 /* huge data */
79 do_geojson_test(
80 "POINT(1E300 -1E300)",
81 "{\"type\":\"Point\",\"coordinates\":[1e+300,-1e+300]}",
82 NULL, 0, 0);
83
84 /* huge precision, see http://trac.osgeo.org/postgis/ticket/2052 */
85 do_geojson_test(
86 "POINT(1 2)",
87 "{\"type\":\"Point\",\"coordinates\":[1,2]}",
88 NULL, 100, 0);
89
90 /* double precision, see http://trac.osgeo.org/postgis/ticket/2051 */
91 do_geojson_test(
92 "POINT(59.99 -59.99)",
93 "{\"type\":\"Point\",\"coordinates\":[59.99,-59.99]}",
94 NULL, 15, 0);
95
96 /* small numbers */
97 /* NOTE: precision of 300 will be converted to max precision (15)
98 * and being there no significant digit within that range
99 * only zeroes will be returned
100 * See http://trac.osgeo.org/postgis/ticket/2051#comment:11
101 */
102 do_geojson_test("POINT(1E-300 -2E-200)",
103 "{\"type\":\"Point\",\"coordinates\":[0,0]}",
104 NULL,
105 300,
106 0);
107}
108
109
110static void out_geojson_test_dims(void)
111{
112 /* 3D */
113 do_geojson_test(
114 "POINT(0 1 2)",
115 "{\"type\":\"Point\",\"coordinates\":[0,1,2]}",
116 NULL, 0, 0);
117
118 /* 3DM */
119 do_geojson_test(
120 "POINTM(0 1 2)",
121 "{\"type\":\"Point\",\"coordinates\":[0,1]}",
122 NULL, 0, 0);
123
124 /* 4D */
125 do_geojson_test(
126 "POINT(0 1 2 3)",
127 "{\"type\":\"Point\",\"coordinates\":[0,1,2]}",
128 NULL, 0, 0);
129}
130
131
132static void out_geojson_test_srid(void)
133{
134 /* Linestring */
135 do_geojson_test(
136 "LINESTRING(0 1,2 3,4 5)",
137 "{\"type\":\"LineString\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"coordinates\":[[0,1],[2,3],[4,5]]}",
138 "EPSG:4326", 0, 0);
139
140 /* Polygon */
141 do_geojson_test(
142 "POLYGON((0 1,2 3,4 5,0 1))",
143 "{\"type\":\"Polygon\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"coordinates\":[[[0,1],[2,3],[4,5],[0,1]]]}",
144 "EPSG:4326", 0, 0);
145
146 /* Polygon - with internal ring */
147 do_geojson_test(
148 "POLYGON((0 1,2 3,4 5,0 1),(6 7,8 9,10 11,6 7))",
149 "{\"type\":\"Polygon\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"coordinates\":[[[0,1],[2,3],[4,5],[0,1]],[[6,7],[8,9],[10,11],[6,7]]]}",
150 "EPSG:4326", 0, 0);
151
152 /* Multiline */
153 do_geojson_test(
154 "MULTILINESTRING((0 1,2 3,4 5),(6 7,8 9,10 11))",
155 "{\"type\":\"MultiLineString\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"coordinates\":[[[0,1],[2,3],[4,5]],[[6,7],[8,9],[10,11]]]}",
156 "EPSG:4326", 0, 0);
157
158 /* MultiPolygon */
159 do_geojson_test(
160 "MULTIPOLYGON(((0 1,2 3,4 5,0 1)),((6 7,8 9,10 11,6 7)))",
161 "{\"type\":\"MultiPolygon\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"coordinates\":[[[[0,1],[2,3],[4,5],[0,1]]],[[[6,7],[8,9],[10,11],[6,7]]]]}",
162 "EPSG:4326", 0, 0);
163
164 /* GeometryCollection */
165 do_geojson_test(
166 "GEOMETRYCOLLECTION(POINT(0 1),LINESTRING(2 3,4 5))",
167 "{\"type\":\"GeometryCollection\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"geometries\":[{\"type\":\"Point\",\"coordinates\":[0,1]},{\"type\":\"LineString\",\"coordinates\":[[2,3],[4,5]]}]}",
168 "EPSG:4326", 0, 0);
169
170 /* Empty GeometryCollection */
171 do_geojson_test(
172 "GEOMETRYCOLLECTION EMPTY",
173 "{\"type\":\"GeometryCollection\",\"crs\":{\"type\":\"name\",\"properties\":{\"name\":\"EPSG:4326\"}},\"geometries\":[]}",
174 "EPSG:4326", 0, 0);
175}
176
177static void out_geojson_test_bbox(void)
178{
179 /* Linestring */
180 do_geojson_test(
181 "LINESTRING(0 1,2 3,4 5)",
182 "{\"type\":\"LineString\",\"bbox\":[0,1,4,5],\"coordinates\":[[0,1],[2,3],[4,5]]}",
183 NULL, 0, 1);
184
185 /* Polygon */
186 do_geojson_test(
187 "POLYGON((0 1,2 3,4 5,0 1))",
188 "{\"type\":\"Polygon\",\"bbox\":[0,1,4,5],\"coordinates\":[[[0,1],[2,3],[4,5],[0,1]]]}",
189 NULL, 0, 1);
190
191 /* Polygon - with internal ring */
192 do_geojson_test(
193 "POLYGON((0 1,2 3,4 5,0 1),(6 7,8 9,10 11,6 7))",
194 "{\"type\":\"Polygon\",\"bbox\":[0,1,4,5],\"coordinates\":[[[0,1],[2,3],[4,5],[0,1]],[[6,7],[8,9],[10,11],[6,7]]]}",
195 NULL, 0, 1);
196
197 /* Multiline */
198 do_geojson_test(
199 "MULTILINESTRING((0 1,2 3,4 5),(6 7,8 9,10 11))",
200 "{\"type\":\"MultiLineString\",\"bbox\":[0,1,10,11],\"coordinates\":[[[0,1],[2,3],[4,5]],[[6,7],[8,9],[10,11]]]}",
201 NULL, 0, 1);
202
203 /* MultiPolygon */
204 do_geojson_test(
205 "MULTIPOLYGON(((0 1,2 3,4 5,0 1)),((6 7,8 9,10 11,6 7)))",
206 "{\"type\":\"MultiPolygon\",\"bbox\":[0,1,10,11],\"coordinates\":[[[[0,1],[2,3],[4,5],[0,1]]],[[[6,7],[8,9],[10,11],[6,7]]]]}",
207 NULL, 0, 1);
208
209 /* GeometryCollection */
210 do_geojson_test(
211 "GEOMETRYCOLLECTION(LINESTRING(0 1,-1 3),LINESTRING(2 3,4 5))",
212 "{\"type\":\"GeometryCollection\",\"bbox\":[-1,1,4,5],\"geometries\":[{\"type\":\"LineString\",\"coordinates\":[[0,1],[-1,3]]},{\"type\":\"LineString\",\"coordinates\":[[2,3],[4,5]]}]}",
213 NULL, 0, 1);
214
215 /* Empty GeometryCollection */
216 do_geojson_test(
217 "GEOMETRYCOLLECTION EMPTY",
218 "{\"type\":\"GeometryCollection\",\"geometries\":[]}",
219 NULL, 0, 1);
220}
221
222static void out_geojson_test_geoms(void)
223{
224 /* Linestring */
225 do_geojson_test(
226 "LINESTRING(0 1,2 3,4 5)",
227 "{\"type\":\"LineString\",\"coordinates\":[[0,1],[2,3],[4,5]]}",
228 NULL, 0, 0);
229
230 /* Polygon */
231 do_geojson_test(
232 "POLYGON((0 1,2 3,4 5,0 1))",
233 "{\"type\":\"Polygon\",\"coordinates\":[[[0,1],[2,3],[4,5],[0,1]]]}",
234 NULL, 0, 0);
235
236 /* Polygon - with internal ring */
237 do_geojson_test(
238 "POLYGON((0 1,2 3,4 5,0 1),(6 7,8 9,10 11,6 7))",
239 "{\"type\":\"Polygon\",\"coordinates\":[[[0,1],[2,3],[4,5],[0,1]],[[6,7],[8,9],[10,11],[6,7]]]}",
240 NULL, 0, 0);
241
242 /* Multiline */
243 do_geojson_test(
244 "MULTILINESTRING((0 1,2 3,4 5),(6 7,8 9,10 11))",
245 "{\"type\":\"MultiLineString\",\"coordinates\":[[[0,1],[2,3],[4,5]],[[6,7],[8,9],[10,11]]]}",
246 NULL, 0, 0);
247
248 /* MultiPolygon */
249 do_geojson_test(
250 "MULTIPOLYGON(((0 1,2 3,4 5,0 1)),((6 7,8 9,10 11,6 7)))",
251 "{\"type\":\"MultiPolygon\",\"coordinates\":[[[[0,1],[2,3],[4,5],[0,1]]],[[[6,7],[8,9],[10,11],[6,7]]]]}",
252 NULL, 0, 0);
253
254 /* GeometryCollection */
255 do_geojson_test(
256 "GEOMETRYCOLLECTION(POINT(0 1),LINESTRING(2 3,4 5))",
257 "{\"type\":\"GeometryCollection\",\"geometries\":[{\"type\":\"Point\",\"coordinates\":[0,1]},{\"type\":\"LineString\",\"coordinates\":[[2,3],[4,5]]}]}",
258 NULL, 0, 0);
259
260 /* Empty GeometryCollection */
261 do_geojson_test(
262 "GEOMETRYCOLLECTION EMPTY",
263 "{\"type\":\"GeometryCollection\",\"geometries\":[]}",
264 NULL, 0, 0);
265
266 /* Nested GeometryCollection */
267 do_geojson_unsupported(
268 "GEOMETRYCOLLECTION(POINT(0 1),GEOMETRYCOLLECTION(LINESTRING(2 3,4 5)))",
269 "GeoJson: geometry not supported.");
270
271 /* CircularString */
272 do_geojson_unsupported(
273 "CIRCULARSTRING(-2 0,0 2,2 0,0 2,2 4)",
274 "lwgeom_to_geojson: 'CircularString' geometry type not supported");
275
276 /* CompoundCurve */
277 do_geojson_unsupported(
278 "COMPOUNDCURVE(CIRCULARSTRING(0 0,1 1,1 0),(1 0,0 1))",
279 "lwgeom_to_geojson: 'CompoundCurve' geometry type not supported");
280
281 /* CurvePolygon */
282 do_geojson_unsupported(
283 "CURVEPOLYGON(CIRCULARSTRING(-2 0,-1 -1,0 0,1 -1,2 0,0 2,-2 0),(-1 0,0 0.5,1 0,0 1,-1 0))",
284 "lwgeom_to_geojson: 'CurvePolygon' geometry type not supported");
285
286 /* MultiCurve */
287 do_geojson_unsupported(
288 "MULTICURVE((5 5,3 5,3 3,0 3),CIRCULARSTRING(0 0,2 1,2 2))",
289 "lwgeom_to_geojson: 'MultiCurve' geometry type not supported");
290
291 /* MultiSurface */
292 do_geojson_unsupported(
293 "MULTISURFACE(CURVEPOLYGON(CIRCULARSTRING(-2 0,-1 -1,0 0,1 -1,2 0,0 2,-2 0),(-1 0,0 0.5,1 0,0 1,-1 0)),((7 8,10 10,6 14,4 11,7 8)))",
294 "lwgeom_to_geojson: 'MultiSurface' geometry type not supported");
295}
296
297/*
298** Used by test harness to register the tests in this file.
299*/
300void out_geojson_suite_setup(void);
301void out_geojson_suite_setup(void)
302{
303 CU_pSuite suite = CU_add_suite("geojson_output", NULL, NULL);
304 PG_ADD_TEST(suite, out_geojson_test_precision);
305 PG_ADD_TEST(suite, out_geojson_test_dims);
306 PG_ADD_TEST(suite, out_geojson_test_srid);
307 PG_ADD_TEST(suite, out_geojson_test_bbox);
308 PG_ADD_TEST(suite, out_geojson_test_geoms);
309}
precision
static uint8_t precision
Definition cu_in_twkb.c:25
out_geojson_test_dims
static void out_geojson_test_dims(void)
Definition cu_out_geojson.c:110
do_geojson_unsupported
static void do_geojson_unsupported(char *in, char *out)
Definition cu_out_geojson.c:38
out_geojson_test_bbox
static void out_geojson_test_bbox(void)
Definition cu_out_geojson.c:177
out_geojson_test_geoms
static void out_geojson_test_geoms(void)
Definition cu_out_geojson.c:222
out_geojson_test_precision
static void out_geojson_test_precision(void)
Definition cu_out_geojson.c:58
do_geojson_test
static void do_geojson_test(char *in, char *out, char *srs, int precision, int has_bbox)
Definition cu_out_geojson.c:20
out_geojson_suite_setup
void out_geojson_suite_setup(void)
Definition cu_out_geojson.c:301
out_geojson_test_srid
static void out_geojson_test_srid(void)
Definition cu_out_geojson.c:132
cu_error_msg_reset
void cu_error_msg_reset()
Definition liblwgeom/cunit/cu_tester.c:304
cu_error_msg
char cu_error_msg[MAX_CUNIT_ERROR_LENGTH+1]
Definition liblwgeom/cunit/cu_tester.c:19
PG_ADD_TEST
#define PG_ADD_TEST(suite, testfunc)
Definition liblwgeom/cunit/cu_tester.h:20
lwgeom_free
void lwgeom_free(LWGEOM *geom)
Definition lwgeom.c:1138
LW_PARSER_CHECK_NONE
#define LW_PARSER_CHECK_NONE
Definition liblwgeom.h:2060
lwfree
void lwfree(void *mem)
Definition lwutil.c:242
lwgeom_from_wkt
LWGEOM * lwgeom_from_wkt(const char *wkt, const char check)
Definition lwin_wkt.c:905
lwgeom_to_geojson
char * lwgeom_to_geojson(const LWGEOM *geo, char *srs, int precision, int has_bbox)
Takes a GEOMETRY and returns a GeoJson representation.
Definition lwout_geojson.c:49
liblwgeom_internal.h
cu_tester.h