third_party/sqlite/sqlite-src-3080704/test/jrnlmode2.test - Issue 2363173002: [sqlite] Remove obsolete reference version 3.8.7.4.

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Issue 2363173002: [sqlite] Remove obsolete reference version 3.8.7.4. (Closed)

Patch Set: Created 4 years, 2 months ago

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1 # 2009 March 24

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 #

12

13 set testdir [file dirname $argv0]

14 source $testdir/tester.tcl

15

16 ifcapable {!pager_pragmas} {

17 finish_test

18 return

19 }

20

21 #-------------------------------------------------------------------------

22 # The tests in this file check that the following two bugs (both now fixed)

23 # do not reappear.

24 #

25 # jrnlmode2-1.*: Demonstrate bug #3745:

26 #

27 # In persistent journal mode, if:

28 #

29 # * There is a persistent journal in the file-system, AND

30 # * there exists a connection with a shared lock on the db file,

31 #

32 # then a second connection cannot open a read-transaction on the database.

33 # The reason is because while determining that the persistent-journal is

34 # not a hot-journal, SQLite currently grabs an exclusive lock on the

35 # database file. If this fails because another connection has a shared

36 # lock, then SQLITE_BUSY is returned to the user.

37 #

38 # jrnlmode2-2.*: Demonstrate bug #3751:

39 #

40 # If a connection is opened in SQLITE_OPEN_READONLY mode, the underlying

41 # unix file descriptor on the database file is opened in O_RDONLY mode.

42 #

43 # When SQLite queries the database file for the schema in order to compile

44 # the SELECT statement, it sees the empty journal in the file system, it

45 # attempts to obtain an exclusive lock on the database file (this is a

46 # bug). The attempt to obtain an exclusive (write) lock on a read-only file

47 # fails at the OS level. Under unix, fcntl() reports an EBADF - "Bad file

48 # descriptor" - error.

49 #

50

51 do_test jrnlmode2-1.1 {

52 execsql {

53 PRAGMA journal_mode = persist;

54 CREATE TABLE t1(a, b);

55 INSERT INTO t1 VALUES(1, 2);

56 }

57 } {persist}

58

59 do_test jrnlmode2-1.2 {

60 file exists test.db-journal

61 } {1}

62

63 do_test jrnlmode2-1.3 {

64 sqlite3 db2 test.db

65 execsql { SELECT * FROM t1 } db2

66 } {1 2}

67

68 do_test jrnlmode2-1.4 {

69 execsql {

70 INSERT INTO t1 VALUES(3, 4);

71 }

72 execsql {

73 BEGIN;

74 SELECT * FROM t1;

75 }

76 execsql { PRAGMA lock_status }

77 } {main shared temp closed}

78

79 do_test jrnlmode2-1.5 {

80 file exists test.db-journal

81 } {1}

82

83 do_test jrnlmode2-1.6 {

84 catchsql { SELECT * FROM t1 } db2

85 } {0 {1 2 3 4}}

86

87 do_test jrnlmode2-1.7 {

88 execsql { COMMIT }

89 catchsql { SELECT * FROM t1 } db2

90 } {0 {1 2 3 4}}

91

92

93

94 do_test jrnlmode2-2.1 {

95 db2 close

96 execsql { PRAGMA journal_mode = truncate }

97 execsql { INSERT INTO t1 VALUES(5, 6) }

98 } {}

99

100 do_test jrnlmode2-2.2 {

101 file exists test.db-journal

102 } {1}

103

104 do_test jrnlmode2-2.3 {

105 file size test.db-journal

106 } {0}

107

108 do_test jrnlmode2-2.4 {

109 sqlite3 db2 test.db -readonly 1

110 catchsql { SELECT * FROM t1 } db2

111 } {0 {1 2 3 4 5 6}}

112

113 do_test jrnlmode2-2.5 {

114 db close

115 delete_file test.db-journal

116 } {}

117 do_test jrnlmode2-2.6 {

118 sqlite3 db2 test.db -readonly 1

119 catchsql { SELECT * FROM t1 } db2

120 } {0 {1 2 3 4 5 6}}

121

122 catch { db2 close }

123 finish_test

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