mirror of https://github.com/sqlite/sqlite
Add tests for CAST expressions to e_expr.test. More to come.
FossilOrigin-Name: ba6119d1e9300de9ce7448cfa0acd579e8e69e41
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dan
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24
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@ -1,8 +1,5 @@
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-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA1
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C Add\sEXTERN\smacros\sbefore\sentry\spoints\sin\stclsqlite.c.\s\sThis\sundoes\sthe\nchange\s[b4d3e0d528c7d17fa3d05]\son\s[2006-03-06\s23:30:52].
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D 2010-08-26T16:46:58
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C Add\stests\sfor\sCAST\sexpressions\sto\se_expr.test.\sMore\sto\scome.
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D 2010-08-26T19:05:24
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in 543f91f24cd7fee774ecc0a61c19704c0c3e78fd
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -345,7 +342,7 @@ F test/descidx2.test 9f1a0c83fd57f8667c82310ca21b30a350888b5d
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F test/descidx3.test fe720e8b37d59f4cef808b0bf4e1b391c2e56b6f
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F test/diskfull.test 0cede7ef9d8f415d9d3944005c76be7589bb5ebb
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F test/distinctagg.test 1a6ef9c87a58669438fc771450d7a72577417376
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F test/e_expr.test 1c531745c94f091445157fb7953a2cc3f256f8e4
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F test/e_expr.test cdf7e80d43fbbbb2112ecb2739f36acca55a2411
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F test/e_fkey.test 6721a741c6499b3ab7e5385923233343c8f1ad05
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F test/e_fts3.test 75bb0aee26384ef586165e21018a17f7cd843469
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F test/enc.test e54531cd6bf941ee6760be041dff19a104c7acea
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@ -850,14 +847,7 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
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F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
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F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
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F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
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@ -1 +1 @@
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8b2cf9d492901a65942d0e0b87c568d1539deece
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ba6119d1e9300de9ce7448cfa0acd579e8e69e41
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116
test/e_expr.test
116
test/e_expr.test
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@ -1378,4 +1378,120 @@ do_execsql_test e_expr-26.1.6 {
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} {R1 R2 R3}
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do_test e_expr-26.1.6 { set ::evalcount } {5}
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#-------------------------------------------------------------------------
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# Test statements related to CAST expressions.
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#
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# EVIDENCE-OF: R-65079-31758 Application of a CAST expression is
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# different to application of a column affinity, as with a CAST
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# expression the storage class conversion is forced even if it is lossy
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# and irrreversible.
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#
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do_execsql_test e_expr-27.1.1 {
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CREATE TABLE t3(a TEXT, b REAL, c INTEGER);
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INSERT INTO t3 VALUES(X'555655', '1.23abc', 4.5);
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SELECT typeof(a), a, typeof(b), b, typeof(c), c FROM t3;
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} {blob UVU text 1.23abc real 4.5}
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do_execsql_test e_expr-27.1.2 {
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SELECT
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typeof(CAST(X'555655' as TEXT)), CAST(X'555655' as TEXT),
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typeof(CAST('1.23abc' as REAL)), CAST('1.23abc' as REAL),
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typeof(CAST(4.5 as INTEGER)), CAST(4.5 as INTEGER)
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} {text UVU real 1.23 integer 4}
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proc do_expr_test {tn expr type value} {
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uplevel do_execsql_test $tn [list "SELECT typeof($expr), $expr"] [
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list [list $type $value]
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]
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}
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proc do_qexpr_test {tn expr value} {
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uplevel do_execsql_test $tn [list "SELECT quote($expr)"] [list $value]
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}
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# EVIDENCE-OF: R-27225-65050 If the value of <expr> is NULL, then
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# the result of the CAST expression is also NULL.
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#
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do_expr_test e_expr-27.2.1 { CAST(NULL AS integer) } null {}
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do_expr_test e_expr-27.2.2 { CAST(NULL AS text) } null {}
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do_expr_test e_expr-27.2.3 { CAST(NULL AS blob) } null {}
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do_expr_test e_expr-27.2.4 { CAST(NULL AS number) } null {}
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# EVIDENCE-OF: R-31076-23575 Casting a value to a <type-name> with
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# no affinity causes the value to be converted into a BLOB.
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#
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do_expr_test e_expr-27.3.1 { CAST('abc' AS blob) } blob abc
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do_expr_test e_expr-27.3.2 { CAST('def' AS shobblob_x) } blob def
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do_expr_test e_expr-27.3.3 { CAST('ghi' AS abbLOb10) } blob ghi
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# EVIDENCE-OF: R-22956-37754 Casting to a BLOB consists of first casting
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# the value to TEXT in the encoding of the database connection, then
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# interpreting the resulting byte sequence as a BLOB instead of as TEXT.
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#
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do_qexpr_test e_expr-27.4.1 { CAST('ghi' AS blob) } X'676869'
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do_qexpr_test e_expr-27.4.2 { CAST(456 AS blob) } X'343536'
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do_qexpr_test e_expr-27.4.3 { CAST(1.78 AS blob) } X'312E3738'
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rename db db2
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sqlite3 db :memory:
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db eval { PRAGMA encoding = 'utf-16le' }
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do_qexpr_test e_expr-27.4.4 { CAST('ghi' AS blob) } X'670068006900'
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do_qexpr_test e_expr-27.4.5 { CAST(456 AS blob) } X'340035003600'
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do_qexpr_test e_expr-27.4.6 { CAST(1.78 AS blob) } X'31002E0037003800'
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db close
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sqlite3 db :memory:
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db eval { PRAGMA encoding = 'utf-16be' }
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do_qexpr_test e_expr-27.4.7 { CAST('ghi' AS blob) } X'006700680069'
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do_qexpr_test e_expr-27.4.8 { CAST(456 AS blob) } X'003400350036'
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do_qexpr_test e_expr-27.4.9 { CAST(1.78 AS blob) } X'0031002E00370038'
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db close
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rename db2 db
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# EVIDENCE-OF: R-04207-37981 To cast a BLOB value to TEXT, the sequence
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# of bytes that make up the BLOB is interpreted as text encoded using
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# the database encoding.
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#
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do_expr_test e_expr-28.1.1 { CAST (X'676869' AS text) } text ghi
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do_expr_test e_expr-28.1.2 { CAST (X'670068006900' AS text) } text g
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rename db db2
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sqlite3 db :memory:
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db eval { PRAGMA encoding = 'utf-16le' }
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do_expr_test e_expr-28.1.3 { CAST (X'676869' AS text) == 'ghi' } integer 0
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do_expr_test e_expr-28.1.4 { CAST (X'670068006900' AS text) } text ghi
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db close
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rename db2 db
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# EVIDENCE-OF: R-22235-47006 Casting an INTEGER or REAL value into TEXT
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# renders the value as if via sqlite3_snprintf() except that the
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# resulting TEXT uses the encoding of the database connection.
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#
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do_expr_test e_expr-28.2.1 { CAST (1 AS text) } text 1
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do_expr_test e_expr-28.2.2 { CAST (45 AS text) } text 45
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do_expr_test e_expr-28.2.3 { CAST (-45 AS text) } text -45
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do_expr_test e_expr-28.2.4 { CAST (8.8 AS text) } text 8.8
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do_expr_test e_expr-28.2.5 { CAST (2.3e+5 AS text) } text 230000.0
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do_expr_test e_expr-28.2.6 { CAST (-2.3e-5 AS text) } text -2.3e-05
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do_expr_test e_expr-28.2.7 { CAST (0.0 AS text) } text 0.0
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do_expr_test e_expr-28.2.7 { CAST (0 AS text) } text 0
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# EVIDENCE-OF: R-26346-36443 When casting a BLOB value to a REAL, the
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# value is first converted to TEXT.
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#
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do_expr_test e_expr-29.1.1 { CAST (X'312E3233' AS REAL) } real 1.23
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do_expr_test e_expr-29.1.2 { CAST (X'3233302E30' AS REAL) } real 230.0
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do_expr_test e_expr-29.1.3 { CAST (X'2D392E3837' AS REAL) } real -9.87
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do_expr_test e_expr-29.1.4 { CAST (X'302E30303031' AS REAL) } real 0.0001
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rename db db2
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sqlite3 db :memory:
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db eval { PRAGMA encoding = 'utf-16le' }
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do_expr_test e_expr-29.1.1 {
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CAST (X'31002E0032003300' AS REAL) } real 1.23
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do_expr_test e_expr-29.1.2 {
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CAST (X'3200330030002E003000' AS REAL) } real 230.0
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do_expr_test e_expr-29.1.3 {
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CAST (X'2D0039002E0038003700' AS REAL) } real -9.87
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do_expr_test e_expr-29.1.4 {
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CAST (X'30002E003000300030003100' AS REAL) } real 0.0001
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db close
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rename db2 db
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finish_test
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