xref: /sqlite-3.40.0/test/cast.test (revision cd7b46db) 
1# 2005 June 25
2#
3# The author disclaims copyright to this source code.  In place of
4# a legal notice, here is a blessing:
5#
6#    May you do good and not evil.
7#    May you find forgiveness for yourself and forgive others.
8#    May you share freely, never taking more than you give.
9#
10#***********************************************************************
11# This file implements regression tests for SQLite library.  The
12# focus of this file is testing the CAST operator.
13#
14# $Id: cast.test,v 1.6 2007/05/16 11:55:57 drh Exp $
15
16set testdir [file dirname $argv0]
17source $testdir/tester.tcl
18
19# Only run these tests if the build includes the CAST operator
20ifcapable !cast {
21  finish_test
22  return
23}
24
25# Tests for the CAST( AS blob), CAST( AS text) and CAST( AS numeric) built-ins
26#
27ifcapable bloblit {
28  do_test cast-1.1 {
29    execsql {SELECT x'616263'}
30  } abc
31  do_test cast-1.2 {
32    execsql {SELECT typeof(x'616263')}
33  } blob
34  do_test cast-1.3 {
35    execsql {SELECT CAST(x'616263' AS text)}
36  } abc
37  do_test cast-1.4 {
38    execsql {SELECT typeof(CAST(x'616263' AS text))}
39  } text
40  do_test cast-1.5 {
41    execsql {SELECT CAST(x'616263' AS numeric)}
42  } 0
43  do_test cast-1.6 {
44    execsql {SELECT typeof(CAST(x'616263' AS numeric))}
45  } integer
46  do_test cast-1.7 {
47    execsql {SELECT CAST(x'616263' AS blob)}
48  } abc
49  do_test cast-1.8 {
50    execsql {SELECT typeof(CAST(x'616263' AS blob))}
51  } blob
52  do_test cast-1.9 {
53    execsql {SELECT CAST(x'616263' AS integer)}
54  } 0
55  do_test cast-1.10 {
56    execsql {SELECT typeof(CAST(x'616263' AS integer))}
57  } integer
58}
59do_test cast-1.11 {
60  execsql {SELECT null}
61} {{}}
62do_test cast-1.12 {
63  execsql {SELECT typeof(NULL)}
64} null
65do_test cast-1.13 {
66  execsql {SELECT CAST(NULL AS text)}
67} {{}}
68do_test cast-1.14 {
69  execsql {SELECT typeof(CAST(NULL AS text))}
70} null
71do_test cast-1.15 {
72  execsql {SELECT CAST(NULL AS numeric)}
73} {{}}
74do_test cast-1.16 {
75  execsql {SELECT typeof(CAST(NULL AS numeric))}
76} null
77do_test cast-1.17 {
78  execsql {SELECT CAST(NULL AS blob)}
79} {{}}
80do_test cast-1.18 {
81  execsql {SELECT typeof(CAST(NULL AS blob))}
82} null
83do_test cast-1.19 {
84  execsql {SELECT CAST(NULL AS integer)}
85} {{}}
86do_test cast-1.20 {
87  execsql {SELECT typeof(CAST(NULL AS integer))}
88} null
89do_test cast-1.21 {
90  execsql {SELECT 123}
91} {123}
92do_test cast-1.22 {
93  execsql {SELECT typeof(123)}
94} integer
95do_test cast-1.23 {
96  execsql {SELECT CAST(123 AS text)}
97} {123}
98do_test cast-1.24 {
99  execsql {SELECT typeof(CAST(123 AS text))}
100} text
101do_test cast-1.25 {
102  execsql {SELECT CAST(123 AS numeric)}
103} 123
104do_test cast-1.26 {
105  execsql {SELECT typeof(CAST(123 AS numeric))}
106} integer
107do_test cast-1.27 {
108  execsql {SELECT CAST(123 AS blob)}
109} {123}
110do_test cast-1.28 {
111  execsql {SELECT typeof(CAST(123 AS blob))}
112} blob
113do_test cast-1.29 {
114  execsql {SELECT CAST(123 AS integer)}
115} {123}
116do_test cast-1.30 {
117  execsql {SELECT typeof(CAST(123 AS integer))}
118} integer
119do_test cast-1.31 {
120  execsql {SELECT 123.456}
121} {123.456}
122do_test cast-1.32 {
123  execsql {SELECT typeof(123.456)}
124} real
125do_test cast-1.33 {
126  execsql {SELECT CAST(123.456 AS text)}
127} {123.456}
128do_test cast-1.34 {
129  execsql {SELECT typeof(CAST(123.456 AS text))}
130} text
131do_test cast-1.35 {
132  execsql {SELECT CAST(123.456 AS numeric)}
133} 123.456
134do_test cast-1.36 {
135  execsql {SELECT typeof(CAST(123.456 AS numeric))}
136} real
137do_test cast-1.37 {
138  execsql {SELECT CAST(123.456 AS blob)}
139} {123.456}
140do_test cast-1.38 {
141  execsql {SELECT typeof(CAST(123.456 AS blob))}
142} blob
143do_test cast-1.39 {
144  execsql {SELECT CAST(123.456 AS integer)}
145} {123}
146do_test cast-1.38 {
147  execsql {SELECT typeof(CAST(123.456 AS integer))}
148} integer
149do_test cast-1.41 {
150  execsql {SELECT '123abc'}
151} {123abc}
152do_test cast-1.42 {
153  execsql {SELECT typeof('123abc')}
154} text
155do_test cast-1.43 {
156  execsql {SELECT CAST('123abc' AS text)}
157} {123abc}
158do_test cast-1.44 {
159  execsql {SELECT typeof(CAST('123abc' AS text))}
160} text
161do_test cast-1.45 {
162  execsql {SELECT CAST('123abc' AS numeric)}
163} 123
164do_test cast-1.46 {
165  execsql {SELECT typeof(CAST('123abc' AS numeric))}
166} integer
167do_test cast-1.47 {
168  execsql {SELECT CAST('123abc' AS blob)}
169} {123abc}
170do_test cast-1.48 {
171  execsql {SELECT typeof(CAST('123abc' AS blob))}
172} blob
173do_test cast-1.49 {
174  execsql {SELECT CAST('123abc' AS integer)}
175} 123
176do_test cast-1.50 {
177  execsql {SELECT typeof(CAST('123abc' AS integer))}
178} integer
179do_test cast-1.51 {
180  execsql {SELECT CAST('123.5abc' AS numeric)}
181} 123.5
182do_test cast-1.53 {
183  execsql {SELECT CAST('123.5abc' AS integer)}
184} 123
185
186# Ticket #1662.  Ignore leading spaces in numbers when casting.
187#
188do_test cast-2.1 {
189  execsql {SELECT CAST('   123' AS integer)}
190} 123
191do_test cast-2.2 {
192  execsql {SELECT CAST('   -123.456' AS real)}
193} -123.456
194
195# ticket #2364.  Use full percision integers if possible when casting
196# to numeric.  Do not fallback to real (and the corresponding 48-bit
197# mantissa) unless absolutely necessary.
198#
199do_test cast-3.1 {
200  execsql {SELECT CAST(9223372036854774800 AS integer)}
201} 9223372036854774800
202do_test cast-3.2 {
203  execsql {SELECT CAST(9223372036854774800 AS numeric)}
204} 9223372036854774800
205do_test cast-3.3 {
206  execsql {SELECT CAST(9223372036854774800 AS real)}
207} 9.22337203685477e+18
208do_test cast-3.4 {
209  execsql {SELECT CAST(CAST(9223372036854774800 AS real) AS integer)}
210} 9223372036854774784
211do_test cast-3.5 {
212  execsql {SELECT CAST(-9223372036854774800 AS integer)}
213} -9223372036854774800
214do_test cast-3.6 {
215  execsql {SELECT CAST(-9223372036854774800 AS numeric)}
216} -9223372036854774800
217do_test cast-3.7 {
218  execsql {SELECT CAST(-9223372036854774800 AS real)}
219} -9.22337203685477e+18
220do_test cast-3.8 {
221  execsql {SELECT CAST(CAST(-9223372036854774800 AS real) AS integer)}
222} -9223372036854774784
223do_test cast-3.11 {
224  execsql {SELECT CAST('9223372036854774800' AS integer)}
225} 9223372036854774800
226do_test cast-3.12 {
227  execsql {SELECT CAST('9223372036854774800' AS numeric)}
228} 9223372036854774800
229do_test cast-3.13 {
230  execsql {SELECT CAST('9223372036854774800' AS real)}
231} 9.22337203685477e+18
232do_test cast-3.14 {
233  execsql {SELECT CAST(CAST('9223372036854774800' AS real) AS integer)}
234} 9223372036854774784
235do_test cast-3.15 {
236  execsql {SELECT CAST('-9223372036854774800' AS integer)}
237} -9223372036854774800
238do_test cast-3.16 {
239  execsql {SELECT CAST('-9223372036854774800' AS numeric)}
240} -9223372036854774800
241do_test cast-3.17 {
242  execsql {SELECT CAST('-9223372036854774800' AS real)}
243} -9.22337203685477e+18
244do_test cast-3.18 {
245  execsql {SELECT CAST(CAST('-9223372036854774800' AS real) AS integer)}
246} -9223372036854774784
247if {[db eval {PRAGMA encoding}]=="UTF-8"} {
248  do_test cast-3.21 {
249    execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS integer)}
250  } 9223372036854774800
251  do_test cast-3.22 {
252    execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS numeric)}
253  } 9223372036854774800
254  do_test cast-3.23 {
255    execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS real)}
256  } 9.22337203685477e+18
257  do_test cast-3.24 {
258    execsql {SELECT CAST(CAST(x'39323233333732303336383534373734383030' AS real) AS integer)}
259  } 9223372036854774784
260}
261do_test case-3.31 {
262  execsql {SELECT CAST(NULL AS numeric)}
263} {{}}
264
265
266finish_test
267