wasCSharpSQLite – Blame information for rev 7
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1 | office | 1 | # 2009 April 01 |
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 | # |
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12 | # $Id: shared6.test,v 1.4 2009/06/05 17:09:12 drh Exp $ |
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13 | |||
14 | set testdir [file dirname $argv0] |
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15 | source $testdir/tester.tcl |
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16 | ifcapable !shared_cache { finish_test ; return } |
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17 | |||
18 | do_test shared6-1.1.1 { |
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19 | execsql { |
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20 | CREATE TABLE t1(a, b); |
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21 | CREATE TABLE t2(c, d); |
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22 | CREATE TABLE t3(e, f); |
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23 | } |
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24 | db close |
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25 | } {} |
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26 | do_test shared6-1.1.2 { |
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27 | set ::enable_shared_cache [sqlite3_enable_shared_cache 1] |
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28 | sqlite3_enable_shared_cache |
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29 | } {1} |
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30 | |||
31 | do_test shared6-1.1.3 { |
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32 | sqlite3 db1 test.db |
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33 | sqlite3 db2 test.db |
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34 | } {} |
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35 | |||
36 | # Exclusive shared-cache locks. Test the following: |
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37 | # |
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38 | # 1.2.1: If [db1] has an exclusive lock, [db2] cannot read. |
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39 | # 1.2.2: If [db1] has an exclusive lock, [db1] can read. |
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40 | # 1.2.3: If [db1] has a non-exclusive write-lock, [db2] can read. |
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41 | # |
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42 | do_test shared6-1.2.1 { |
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43 | execsql { SELECT * FROM t1 } db2 ;# Cache a compiled statement |
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44 | execsql { BEGIN EXCLUSIVE } db1 |
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45 | catchsql { SELECT * FROM t1 } db2 ;# Execute the cached compiled statement |
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46 | } {1 {database table is locked}} |
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47 | do_test shared6-1.2.2 { |
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48 | execsql { SELECT * FROM t1 } db1 |
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49 | } {} |
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50 | do_test shared6-1.2.3 { |
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51 | execsql { |
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52 | COMMIT; |
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53 | BEGIN; |
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54 | INSERT INTO t2 VALUES(3, 4); |
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55 | } db1 |
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56 | execsql { SELECT * FROM t1 } db2 |
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57 | } {} |
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58 | do_test shared6-1.2.X { |
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59 | execsql { COMMIT } db1 |
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60 | } {} |
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61 | |||
62 | # Regular shared-cache locks. Verify the following: |
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63 | # |
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64 | # 1.3.1: If [db1] has a write-lock on t1, [db1] can read from t1. |
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65 | # 1.3.2: If [db1] has a write-lock on t1, [db2] can read from t2. |
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66 | # 1.3.3: If [db1] has a write-lock on t1, [db2] cannot read from t1. |
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67 | # 1.3.4: If [db1] has a write-lock on t1, [db2] cannot write to t1. |
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68 | # 1.3.5: If [db1] has a read-lock on t1, [db2] can read from t1. |
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69 | # 1.3.6: If [db1] has a read-lock on t1, [db2] cannot write to t1. |
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70 | # |
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71 | do_test shared6-1.3.1 { |
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72 | execsql { |
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73 | BEGIN; |
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74 | INSERT INTO t1 VALUES(1, 2); |
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75 | } db1 |
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76 | execsql { SELECT * FROM t1 } db1 |
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77 | } {1 2} |
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78 | do_test shared6-1.3.2 { |
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79 | execsql { SELECT * FROM t2 } db2 |
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80 | } {3 4} |
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81 | do_test shared6-1.3.3 { |
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82 | catchsql { SELECT * FROM t1 } db2 |
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83 | } {1 {database table is locked: t1}} |
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84 | do_test shared6-1.3.4 { |
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85 | catchsql { INSERT INTO t2 VALUES(1, 2) } db2 |
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86 | } {1 {database table is locked}} |
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87 | do_test shared6-1.3.5 { |
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88 | execsql { |
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89 | COMMIT; |
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90 | BEGIN; |
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91 | SELECT * FROM t1; |
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92 | } db1 |
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93 | execsql { SELECT * FROM t1 } db2 |
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94 | } {1 2} |
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95 | do_test shared6-1.3.5 { |
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96 | catchsql { INSERT INTO t1 VALUES(5, 6) } db2 |
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97 | } {1 {database table is locked: t1}} |
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98 | do_test shared6-1.3.X { |
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99 | execsql { COMMIT } db1 |
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100 | } {} |
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101 | |||
102 | # Read-uncommitted mode. |
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103 | # |
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104 | # For these tests, connection [db2] is in read-uncommitted mode. |
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105 | # |
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106 | # 1.4.1: If [db1] has a write-lock on t1, [db2] can still read from t1. |
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107 | # 1.4.2: If [db1] has a write-lock on the db schema (sqlite_master table), |
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108 | # [db2] cannot read from the schema. |
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109 | # 1.4.3: If [db1] has a read-lock on t1, [db2] cannot write to t1. |
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110 | # |
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111 | do_test shared6-1.4.1 { |
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112 | execsql { PRAGMA read_uncommitted = 1 } db2 |
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113 | execsql { |
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114 | BEGIN; |
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115 | INSERT INTO t1 VALUES(5, 6); |
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116 | } db1 |
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117 | execsql { SELECT * FROM t1 } db2 |
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118 | } {1 2 5 6} |
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119 | do_test shared6-1.4.2 { |
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120 | execsql { CREATE TABLE t4(a, b) } db1 |
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121 | catchsql { SELECT * FROM t1 } db2 |
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122 | } {1 {database table is locked}} |
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123 | do_test shared6-1.4.3 { |
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124 | execsql { |
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125 | COMMIT; |
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126 | BEGIN; |
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127 | SELECT * FROM t1; |
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128 | } db1 |
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129 | catchsql { INSERT INTO t1 VALUES(7, 8) } db2 |
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130 | } {1 {database table is locked: t1}} |
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131 | |||
132 | do_test shared6-1.X { |
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133 | db1 close |
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134 | db2 close |
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135 | } {} |
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136 | |||
137 | #------------------------------------------------------------------------- |
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138 | # The following tests - shared6-2.* - test that two database connections |
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139 | # that connect to the same file using different VFS implementations do |
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140 | # not share a cache. |
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141 | # |
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142 | if {$::tcl_platform(platform) eq "unix"} { |
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143 | do_test shared6-2.1 { |
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144 | sqlite3 db1 test.db -vfs unix |
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145 | sqlite3 db2 test.db -vfs unix |
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146 | sqlite3 db3 test.db -vfs unix-none |
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147 | sqlite3 db4 test.db -vfs unix-none |
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148 | } {} |
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149 | |||
150 | do_test shared6-2.2 { |
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151 | execsql { BEGIN; INSERT INTO t1 VALUES(9, 10); } db1 |
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152 | catchsql { SELECT * FROM t1 } db2 |
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153 | } {1 {database table is locked: t1}} |
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154 | do_test shared6-2.3 { |
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155 | execsql { SELECT * FROM t1 } db3 |
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156 | } {1 2 5 6} |
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157 | |||
158 | do_test shared6-2.3 { |
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159 | execsql { COMMIT } db1 |
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160 | execsql { BEGIN; INSERT INTO t1 VALUES(11, 12); } db3 |
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161 | catchsql { SELECT * FROM t1 } db4 |
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162 | } {1 {database table is locked: t1}} |
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163 | |||
164 | do_test shared6-2.4 { |
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165 | execsql { SELECT * FROM t1 } db1 |
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166 | } {1 2 5 6 9 10} |
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167 | |||
168 | do_test shared6-2.5 { |
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169 | execsql { COMMIT } db3 |
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170 | } {} |
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171 | |||
172 | do_test shared6-2.X { |
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173 | db1 close |
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174 | db2 close |
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175 | db3 close |
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176 | db4 close |
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177 | } {} |
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178 | } |
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179 | |||
180 | #------------------------------------------------------------------------- |
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181 | # Test that it is possible to open an exclusive transaction while |
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182 | # already holding a read-lock on the database file. And that it is |
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183 | # not possible if some other connection holds such a lock. |
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184 | # |
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185 | do_test shared6-3.1 { |
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186 | sqlite3 db1 test.db |
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187 | sqlite3 db2 test.db |
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188 | sqlite3 db3 test.db |
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189 | } {} |
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190 | db1 eval {SELECT * FROM t1} { |
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191 | # Within this block [db1] is holding a read-lock on t1. Test that |
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192 | # this means t1 cannot be written by [db2]. |
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193 | # |
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194 | do_test shared6-3.2 { |
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195 | catchsql { INSERT INTO t1 VALUES(1, 2) } db2 |
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196 | } {1 {database table is locked: t1}} |
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197 | |||
198 | do_test shared6-3.3 { |
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199 | execsql { BEGIN EXCLUSIVE } db1 |
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200 | } {} |
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201 | break |
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202 | } |
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203 | do_test shared6-3.4 { |
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204 | catchsql { SELECT * FROM t1 } db2 |
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205 | } {1 {database schema is locked: main}} |
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206 | do_test shared6-3.5 { |
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207 | execsql COMMIT db1 |
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208 | } {} |
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209 | db2 eval {SELECT * FROM t1} { |
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210 | do_test shared6-3.6 { |
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211 | catchsql { BEGIN EXCLUSIVE } db1 |
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212 | } {1 {database table is locked}} |
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213 | break |
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214 | } |
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215 | do_test shared6-3.7 { |
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216 | execsql { BEGIN } db1 |
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217 | execsql { BEGIN } db2 |
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218 | } {} |
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219 | db2 eval {SELECT * FROM t1} { |
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220 | do_test shared6-3.8 { |
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221 | catchsql { INSERT INTO t1 VALUES(1, 2) } db1 |
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222 | } {1 {database table is locked: t1}} |
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223 | break |
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224 | } |
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225 | do_test shared6-3.9 { |
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226 | execsql { BEGIN ; ROLLBACK } db3 |
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227 | } {} |
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228 | do_test shared6-3.10 { |
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229 | catchsql { SELECT * FROM t1 } db3 |
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230 | } {1 {database table is locked}} |
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231 | do_test shared6-3.X { |
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232 | db1 close |
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233 | db2 close |
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234 | db3 close |
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235 | } {} |
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236 | |||
237 | do_test shared6-4.1 { |
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238 | #file delete -force test.db test.db-journal |
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239 | sqlite3 db1 test.db |
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240 | sqlite3 db2 test.db |
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241 | |||
242 | set ::STMT [sqlite3_prepare_v2 db1 "SELECT * FROM t1" -1 DUMMY] |
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243 | execsql { CREATE TABLE t5(a, b) } db2 |
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244 | } {} |
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245 | do_test shared6-4.2 { |
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246 | sqlite3_finalize $::STMT |
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247 | } {SQLITE_OK} |
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248 | do_test shared6-4.X { |
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249 | |||
250 | db1 close |
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251 | db2 close |
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252 | } {} |
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253 | |||
254 | sqlite3_enable_shared_cache $::enable_shared_cache |
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255 | finish_test |