wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2004 September 2 |
2 | # |
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3 | # The author disclaims copyright to this source code. In place of |
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4 | # a legal notice, here is a blessing: |
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5 | # |
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6 | # May you do good and not evil. |
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7 | # May you find forgiveness for yourself and forgive others. |
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8 | # May you share freely, never taking more than you give. |
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9 | # |
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10 | #*********************************************************************** |
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11 | # This file implements regression tests for SQLite library. The |
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12 | # focus of this script testing the callback-free C/C++ API and in |
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13 | # particular the behavior of sqlite3_step() when trying to commit |
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14 | # with lock contention. |
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15 | # |
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16 | # $Id: capi3b.test,v 1.4 2007/08/10 19:46:14 drh Exp $ |
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17 | # |
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18 | |||
19 | set testdir [file dirname $argv0] |
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20 | source $testdir/tester.tcl |
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21 | |||
22 | |||
23 | # These tests depend on the pager holding changes in cache |
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24 | # until it is time to commit. But that won't happen if the |
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25 | # soft-heap-limit is set too low. So disable the soft heap limit |
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26 | # for the duration of this test. |
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27 | # |
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28 | sqlite3_soft_heap_limit 0 |
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29 | |||
30 | |||
31 | set DB [sqlite3_connection_pointer db] |
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32 | sqlite3 db2 test.db |
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33 | set DB2 [sqlite3_connection_pointer db2] |
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34 | |||
35 | # Create some data in the database |
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36 | # |
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37 | do_test capi3b-1.1 { |
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38 | execsql { |
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39 | CREATE TABLE t1(x); |
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40 | INSERT INTO t1 VALUES(1); |
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41 | INSERT INTO t1 VALUES(2); |
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42 | SELECT * FROM t1 |
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43 | } |
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44 | } {1 2} |
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45 | |||
46 | # Make sure the second database connection can see the data |
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47 | # |
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48 | do_test capi3b-1.2 { |
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49 | execsql { |
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50 | SELECT * FROM t1 |
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51 | } db2 |
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52 | } {1 2} |
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53 | |||
54 | # First database connection acquires a shared lock |
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55 | # |
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56 | do_test capi3b-1.3 { |
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57 | execsql { |
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58 | BEGIN; |
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59 | SELECT * FROM t1; |
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60 | } |
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61 | } {1 2} |
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62 | |||
63 | # Second database connection tries to write. The sqlite3_step() |
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64 | # function returns SQLITE_BUSY because it cannot commit. |
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65 | # |
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66 | do_test capi3b-1.4 { |
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67 | set VM [sqlite3_prepare $DB2 {INSERT INTO t1 VALUES(3)} -1 TAIL] |
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68 | sqlite3_step $VM |
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69 | } SQLITE_BUSY |
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70 | |||
71 | # The sqlite3_step call can be repeated multiple times. |
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72 | # |
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73 | do_test capi3b-1.5.1 { |
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74 | sqlite3_step $VM |
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75 | } SQLITE_BUSY |
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76 | do_test capi3b-1.5.2 { |
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77 | sqlite3_step $VM |
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78 | } SQLITE_BUSY |
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79 | |||
80 | # The first connection closes its transaction. This allows the second |
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81 | # connections sqlite3_step to succeed. |
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82 | # |
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83 | do_test capi3b-1.6 { |
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84 | execsql COMMIT |
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85 | sqlite3_step $VM |
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86 | } SQLITE_DONE |
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87 | do_test capi3b-1.7 { |
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88 | sqlite3_finalize $VM |
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89 | } SQLITE_OK |
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90 | do_test capi3b-1.8 { |
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91 | execsql {SELECT * FROM t1} db2 |
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92 | } {1 2 3} |
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93 | do_test capi3b-1.9 { |
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94 | execsql {SELECT * FROM t1} |
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95 | } {1 2 3} |
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96 | |||
97 | # Start doing a SELECT with one connection. This gets a SHARED lock. |
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98 | # Then do an INSERT with the other connection. The INSERT should |
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99 | # not be able to complete until the SELECT finishes. |
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100 | # |
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101 | do_test capi3b-2.1 { |
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102 | set VM1 [sqlite3_prepare $DB {SELECT * FROM t1} -1 TAIL] |
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103 | sqlite3_step $VM1 |
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104 | } SQLITE_ROW |
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105 | do_test capi3b-2.2 { |
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106 | sqlite3_column_text $VM1 0 |
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107 | } 1 |
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108 | do_test capi3b-2.3 { |
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109 | set VM2 [sqlite3_prepare $DB2 {INSERT INTO t1 VALUES(4)} -1 TAIL] |
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110 | sqlite3_step $VM2 |
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111 | } SQLITE_BUSY |
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112 | do_test capi3b-2.4 { |
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113 | sqlite3_step $VM1 |
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114 | } SQLITE_ROW |
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115 | do_test capi3b-2.5 { |
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116 | sqlite3_column_text $VM1 0 |
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117 | } 2 |
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118 | do_test capi3b-2.6 { |
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119 | sqlite3_step $VM2 |
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120 | } SQLITE_BUSY |
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121 | do_test capi3b-2.7 { |
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122 | sqlite3_step $VM1 |
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123 | } SQLITE_ROW |
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124 | do_test capi3b-2.8 { |
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125 | sqlite3_column_text $VM1 0 |
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126 | } 3 |
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127 | do_test capi3b-2.9 { |
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128 | sqlite3_step $VM2 |
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129 | } SQLITE_BUSY |
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130 | do_test capi3b-2.10 { |
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131 | sqlite3_step $VM1 |
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132 | } SQLITE_DONE |
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133 | do_test capi3b-2.11 { |
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134 | sqlite3_step $VM2 |
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135 | } SQLITE_DONE |
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136 | do_test capi3b-2.12 { |
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137 | sqlite3_finalize $VM1 |
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138 | sqlite3_finalize $VM2 |
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139 | execsql {SELECT * FROM t1} |
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140 | } {1 2 3 4} |
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141 | |||
142 | catch {db2 close} |
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143 | |||
144 | sqlite3_soft_heap_limit $cmdlinearg(soft-heap-limit) |
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145 | finish_test |