modernc.org/cc@v1.0.1/v2/testdata/_sqlite/test/server1.test (about)

     1  # 2006 January 09
     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 script is testing the server mode of SQLite.
    13  #
    14  # This file is derived from thread1.test
    15  #
    16  # $Id: server1.test,v 1.5 2007/08/29 18:20:17 drh Exp $
    17  
    18  
    19  set testdir [file dirname $argv0]
    20  source $testdir/tester.tcl
    21  
    22  # Skip this whole file if the server testing code is not enabled
    23  #
    24  if {[llength [info command client_step]]==0 || [sqlite3 -has-codec]} {
    25    finish_test
    26    return
    27  }
    28  
    29  # The sample server implementation does not work right when memory
    30  # management is enabled.
    31  #
    32  ifcapable (memorymanage||mutex_noop) {
    33    finish_test
    34    return
    35  }
    36  
    37  # Create some data to work with
    38  #
    39  do_test server1-1.1 {
    40    execsql {
    41      CREATE TABLE t1(a,b);
    42      INSERT INTO t1 VALUES(1,'abcdefgh');
    43      INSERT INTO t1 SELECT a+1, b||b FROM t1;
    44      INSERT INTO t1 SELECT a+2, b||b FROM t1;
    45      INSERT INTO t1 SELECT a+4, b||b FROM t1;
    46      SELECT count(*), max(length(b)) FROM t1;
    47    }
    48  } {8 64}
    49  
    50  # Interleave two threads on read access.  Then make sure a third
    51  # thread can write the database.  In other words:
    52  #
    53  #    read-lock A
    54  #    read-lock B
    55  #    unlock A
    56  #    unlock B
    57  #    write-lock C
    58  #
    59  do_test server1-1.2 {
    60    client_create A test.db
    61    client_create B test.db
    62    client_create C test.db
    63    client_compile A {SELECT a FROM t1}
    64    client_step A
    65    client_result A
    66  } SQLITE_ROW
    67  do_test server1-1.3 {
    68    client_argc A
    69  } 1
    70  do_test server1-1.4 {
    71    client_argv A 0
    72  } 1
    73  do_test server1-1.5 {
    74    client_compile B {SELECT b FROM t1}
    75    client_step B
    76    client_result B
    77  } SQLITE_ROW
    78  do_test server1-1.6 {
    79    client_argc B
    80  } 1
    81  do_test server1-1.7 {
    82    client_argv B 0
    83  } abcdefgh
    84  do_test server1-1.8 {
    85    client_finalize A
    86    client_result A
    87  } SQLITE_OK
    88  do_test server1-1.9 {
    89    client_finalize B
    90    client_result B
    91  } SQLITE_OK
    92  do_test server1-1.10 {
    93    client_compile C {CREATE TABLE t2(x,y)}
    94    client_step C
    95    client_result C
    96  } SQLITE_DONE
    97  do_test server1-1.11 {
    98    client_finalize C
    99    client_result C
   100  } SQLITE_OK
   101  do_test server1-1.12 {
   102    catchsql {SELECT name FROM sqlite_master}
   103    execsql {SELECT name FROM sqlite_master}
   104  } {t1 t2}
   105  
   106  
   107  # Read from table t1.  Do not finalize the statement.  This
   108  # will leave the lock pending.
   109  #
   110  do_test server1-2.1 {
   111    client_halt *
   112    client_create A test.db
   113    client_compile A {SELECT a FROM t1}
   114    client_step A
   115    client_result A
   116  } SQLITE_ROW
   117  
   118  # Read from the same table from another thread.  This is allows.
   119  #
   120  do_test server1-2.2 {
   121    client_create B test.db
   122    client_compile B {SELECT b FROM t1}
   123    client_step B
   124    client_result B
   125  } SQLITE_ROW
   126  
   127  # Write to a different table from another thread.  This is allowed
   128  # because in server mode with a shared cache we have table-level locking.
   129  #
   130  do_test server1-2.3 {
   131    client_create C test.db
   132    client_compile C {INSERT INTO t2 VALUES(98,99)}
   133    client_step C
   134    client_result C
   135    client_finalize C
   136    client_result C
   137  } SQLITE_OK
   138  
   139  # But we cannot insert into table t1 because threads A and B have it locked.
   140  #
   141  do_test server1-2.4 {
   142    client_compile C {INSERT INTO t1 VALUES(98,99)}
   143    client_step C
   144    client_result C
   145    client_finalize C
   146    client_result C
   147  } SQLITE_LOCKED
   148  do_test server1-2.5 {
   149    client_finalize B
   150    client_wait B
   151    client_compile C {INSERT INTO t1 VALUES(98,99)}
   152    client_step C
   153    client_result C
   154    client_finalize C
   155    client_result C
   156  } SQLITE_LOCKED
   157  
   158  # Insert into t1 is successful after finishing the other two threads.
   159  do_test server1-2.6 {
   160    client_finalize A
   161    client_wait A
   162    client_compile C {INSERT INTO t1 VALUES(98,99)}
   163    client_step C
   164    client_result C
   165    client_finalize C
   166    client_result C
   167  } SQLITE_OK
   168  
   169  client_halt *   
   170  sqlite3_enable_shared_cache 0
   171  finish_test