ddcp 0.2.4

Distributed decentralized database-to-database copy
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299

#include <assert.h>
#include <stdio.h>
#include <string.h>

#include "crsqlite.h"
int crsql_close(sqlite3 *db);

static void testAsOrdered() {
  printf("AsOrdered\n");

  sqlite3 *db;
  int rc;

  rc = sqlite3_open(":memory:", &db);
  rc += sqlite3_exec(db,
                     "CREATE TABLE todo (id primary key, list_id, ordering, "
                     "content, complete);",
                     0, 0, 0);
  rc += sqlite3_exec(
      db, "CREATE INDEX todo_list_id_ordering ON todo (list_id, ordering);", 0,
      0, 0);
  assert(rc == SQLITE_OK);

  // Test 1 list column
  rc += sqlite3_exec(
      db, "SELECT crsql_fract_as_ordered('todo', 'ordering', 'list_id')", 0, 0,
      0);
  assert(rc == SQLITE_OK);

  // Test idempotency
  rc += sqlite3_exec(
      db, "SELECT crsql_fract_as_ordered('todo', 'ordering', 'list_id')", 0, 0,
      0);
  assert(rc == SQLITE_OK);

  // test prepend
  rc += sqlite3_exec(db, "INSERT INTO todo VALUES (1, 1, -1, 'head', false)", 0,
                     0, 0);
  assert(rc == SQLITE_OK);
  sqlite3_stmt *pStmt;
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 1", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  const unsigned char *order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a0") == 0);
  sqlite3_finalize(pStmt);

  // test append
  rc += sqlite3_exec(db, "INSERT INTO todo VALUES (3, 1, 1, 'tail', false)", 0,
                     0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 3", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a1") == 0);
  sqlite3_finalize(pStmt);

  // test insert after head
  sqlite3_exec(db,
               "INSERT INTO todo_fractindex (id, list_id, content, "
               "complete, after_id) VALUES (2, 1, 'mid', false, 1)",
               0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(
      db, "SELECT id, ordering FROM todo ORDER BY ordering ASC", -1, &pStmt, 0);
  assert(rc == SQLITE_OK);
  int i = 1;
  while (sqlite3_step(pStmt) == SQLITE_ROW) {
    assert(sqlite3_column_int(pStmt, 0) == i);
    if (i == 2) {
      assert(strcmp((const char *)sqlite3_column_text(pStmt, 1), "a0V") == 0);
    }
    i += 1;
  }
  sqlite3_finalize(pStmt);

  // prepend a list with items via -1 trick
  rc = sqlite3_exec(db,
                    "INSERT INTO todo (id, list_id, content, "
                    "complete, ordering) VALUES (0, 1, 'mid', false, -1)",
                    0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 0", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "Zz") == 0);
  sqlite3_finalize(pStmt);

  // append to a list with items via 1 trick
  rc = sqlite3_exec(db,
                    "INSERT INTO todo (id, list_id, content, "
                    "complete, ordering) VALUES (4, 1, 'mid', false, 1)",
                    0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 4", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a2") == 0);
  sqlite3_finalize(pStmt);

  // before head via view and null
  sqlite3_exec(db,
               "INSERT INTO todo_fractindex (id, list_id, content, "
               "complete, after_id) VALUES (-1, 1, 'firstfirst', false, NULL)",
               0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = -1", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "Zy") == 0);
  sqlite3_finalize(pStmt);

  // after tail view view
  sqlite3_exec(db,
               "INSERT INTO todo_fractindex (id, list_id, content, "
               "complete, after_id) VALUES (5, 1, 'lastlast', false, 4)",
               0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 5", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a3") == 0);
  sqlite3_finalize(pStmt);

  // test move after
  sqlite3_exec(db, "UPDATE todo_fractindex SET after_id = 4 WHERE id = 3", 0, 0,
               0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 3", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a2V") == 0);
  sqlite3_finalize(pStmt);

  /*
  -1 -> Zy
  0 -> Zz
  1 -> a0
  2 -> ?
  4 -> a2
  3 -> a2V
  5 -> a3
  */

  // insert between / insert after
  sqlite3_exec(db,
               "INSERT INTO todo_fractindex (id, list_id, content, "
               "complete, after_id) VALUES (2, 1, 'blark', false, 1)",
               0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 2", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a0V") == 0);
  sqlite3_finalize(pStmt);

  /*
  -1 -> Zy
  0 -> Zz
  1 -> a0
  2 -> a0V
  4 -> a2
  3 -> a2V
  5 -> a3
  */

  // move before
  // move 3 before 4
  sqlite3_exec(db, "UPDATE todo_fractindex SET after_id = 2 WHERE id = 3", 0, 0,
               0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 3", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a1") == 0);
  sqlite3_finalize(pStmt);

  /*
  -1 -> Zy
  0 -> Zz
  1 -> a0
  2 -> a0V
  3 -> a1
  4 -> a2
  5 -> a3
  */

  // make some collisions
  rc = sqlite3_exec(
      db,
      "INSERT INTO todo (id, list_id, content, complete, ordering) "
      "VALUES (6, 1, 'xx', false, 'a1')",
      0, 0, 0);
  assert(rc == SQLITE_OK);
  // 3 & 6 collide, try insertion after 3
  // 3 should be moved down and the new insertion should get position between
  // 3's new position and old position
  sqlite3_exec(db,
               "INSERT INTO todo_fractindex (id, list_id, content, "
               "complete, after_id) VALUES (7, 1, 'xx', false, 3)",
               0, 0, 0);
  assert(rc == SQLITE_OK);
  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 7", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a0t") == 0);
  sqlite3_finalize(pStmt);

  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 3", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a0l") == 0);
  sqlite3_finalize(pStmt);

  rc += sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 6", -1,
                           &pStmt, 0);
  assert(rc == SQLITE_OK);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  assert(strcmp((const char *)order, "a1") == 0);
  sqlite3_finalize(pStmt);

  // Test many list column

  // Schema change and re-run test

  // Test no list columns
  // rc += sqlite3_exec(db, "SELECT crsql_fract_as_ordered('todo', 'ordering')",
  // 0,
  //                    0, 0);
  // assert(rc == SQLITE_OK);

  // Test insert into other lists is independent

  printf("\t\e[0;32mSuccess\e[0m\n");
  crsql_close(db);
}

void crsqlFractSuite() {
  printf("\e[47m\e[1;30mSuite: fract\e[0m\n");

  testAsOrdered();
}

/*
sqlite3_prepare_v2(db,
                     "SELECT count(*) FROM todo WHERE list_id = 1 "
                     "AND ordering = (SELECT ordering FROM "
                     "todo WHERE id = 1)",
                     -1, &pStmt, 0);
  sqlite3_step(pStmt);
  int count = sqlite3_column_int(pStmt, 0);
  printf("Count: %d\n", count);
  sqlite3_finalize(pStmt);

  sqlite3_prepare_v2(db, "SELECT ordering FROM todo WHERE id = 1", -1, &pStmt,
                     0);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  printf("Order 1: %s\n", order);
  sqlite3_finalize(pStmt);

  sqlite3_prepare_v2(db,
                     "SELECT ordering FROM todo WHERE list_id = 1 AND ordering "
                     "> (SELECT ordering FROM todo WHERE list_id = 1) LIMIT 1",
                     -1, &pStmt, 0);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  printf("Order 2: %s\n", order);
  sqlite3_finalize(pStmt);

  sqlite3_prepare_v2(db, "SELECT crsql_fract_key_between('a0', 'a1')", -1,
                     &pStmt, 0);
  sqlite3_step(pStmt);
  order = sqlite3_column_text(pStmt, 0);
  printf("Order 1.5: %s\n", order);
  sqlite3_finalize(pStmt);
*/