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Report an error if the main, or any other, database encoding is modified by an external process (perhaps using the backup API) after the db has been opened.

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FossilOrigin-Name: 895bd20b29e223496e1585483c6ce3335ae9050f2e5de4d6b69d0e40df396862
This commit is contained in:
dan
2020-03-05 18:04:09 +00:00
parent 42a630b1da
commit 0ea2d42ac3
6 changed files with 99 additions and 30 deletions
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80
test/enc.test
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@ -169,4 +169,84 @@ do_test enc-11.2 {
}
} {2}
#-------------------------------------------------------------------------
reset_db
forcedelete test.db2
forcedelete test.db3
do_execsql_test enc-12.0 {
PRAGMA encoding = 'utf-8';
CREATE TABLE t1(a, b, c);
INSERT INTO t1 VALUES('a', 'b', 'c');
ATTACH 'test.db3' AS aux;
CREATE TABLE aux.t3(x, y, z);
INSERT INTO t3 VALUES('xxx', 'yyy', 'zzz');
PRAGMA encoding;
} {UTF-8}
do_test enc-12.1 {
sqlite3 db2 test.db2
db2 eval {
PRAGMA encoding = 'UTF-16le';
CREATE TABLE t2(d, e, f);
INSERT INTO t2 VALUES('d', 'e', 'f');
PRAGMA encoding;
}
} {UTF-16le}
do_test enc-12.2 {
db2 backup test.db
db2 close
} {}
do_catchsql_test enc-12.3 {
SELECT * FROM t2;
} {1 {attached databases must use the same text encoding as main database}}
db close
sqlite3 db test.db3
do_execsql_test enc-12.4 {
SELECT * FROM t3;
PRAGMA encoding = 'UTF-16le';
SELECT * FROM t3;
} {xxx yyy zzz xxx yyy zzz}
db close
sqlite3 db test.db3
breakpoint
do_execsql_test enc-12.5 {
PRAGMA encoding = 'UTF-16le';
PRAGMA encoding;
} {UTF-8}
reset_db
do_execsql_test enc-12.6 {
PRAGMA encoding = 'UTF-8';
CREATE TEMP TABLE t1(a, b, c);
INSERT INTO t1 VALUES('xxx', 'yyy', 'zzz');
}
do_test enc-12.7 {
sqlite3 db2 test.db2
db2 backup test.db
db2 close
db eval {
SELECT * FROM t1;
}
} {xxx yyy zzz}
do_catchsql_test enc-12.8 {
SELECT * FROM t2;
SELECT * FROM t1;
} {1 {attached databases must use the same text encoding as main database}}
db close
sqlite3 db test.db
do_execsql_test enc-12.9 {
CREATE TEMP TABLE t1(a, b, c);
INSERT INTO t1 VALUES('xxx', 'yyy', 'zzz');
}
do_execsql_test enc-12.10 {
SELECT * FROM t2;
SELECT * FROM t1;
} {d e f xxx yyy zzz}
finish_test