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1 # 2007 May 14 |
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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 file is testing the built-in SUBSTR() functions. |
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13 # |
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14 # $Id: substr.test,v 1.3 2007/10/12 19:11:55 drh Exp $ |
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15 |
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16 set testdir [file dirname $argv0] |
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17 source $testdir/tester.tcl |
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18 |
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19 ifcapable !tclvar { |
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20 finish_test |
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21 return |
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22 } |
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23 |
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24 # Create a table to work with. |
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25 # |
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26 execsql { |
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27 CREATE TABLE t1(t text, b blob) |
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28 } |
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29 proc substr-test {id string i1 i2 result} { |
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30 db eval { |
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31 DELETE FROM t1; |
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32 INSERT INTO t1(t) VALUES($string) |
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33 } |
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34 do_test substr-$id.1 [subst { |
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35 execsql { |
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36 SELECT substr(t, $i1, $i2) FROM t1 |
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37 } |
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38 }] [list $result] |
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39 set qstr '[string map {' ''} $string]' |
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40 do_test substr-$id.2 [subst { |
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41 execsql { |
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42 SELECT substr($qstr, $i1, $i2) |
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43 } |
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44 }] [list $result] |
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45 } |
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46 proc subblob-test {id hex i1 i2 hexresult} { |
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47 db eval " |
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48 DELETE FROM t1; |
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49 INSERT INTO t1(b) VALUES(x'$hex') |
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50 " |
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51 do_test substr-$id.1 [subst { |
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52 execsql { |
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53 SELECT hex(substr(b, $i1, $i2)) FROM t1 |
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54 } |
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55 }] [list $hexresult] |
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56 do_test substr-$id.2 [subst { |
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57 execsql { |
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58 SELECT hex(substr(x'$hex', $i1, $i2)) |
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59 } |
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60 }] [list $hexresult] |
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61 } |
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62 |
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63 # Basic SUBSTR functionality |
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64 # |
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65 substr-test 1.1 abcdefg 1 1 a |
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66 substr-test 1.2 abcdefg 2 1 b |
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67 substr-test 1.3 abcdefg 1 2 ab |
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68 substr-test 1.4 abcdefg 1 100 abcdefg |
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69 substr-test 1.5 abcdefg 0 1 a |
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70 substr-test 1.6 abcdefg -1 1 g |
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71 substr-test 1.7 abcdefg -1 10 g |
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72 substr-test 1.8 abcdefg -5 3 cde |
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73 substr-test 1.9 abcdefg -7 3 abc |
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74 substr-test 1.10 abcdefg -100 98 abcde |
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75 |
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76 # Make sure everything works with long unicode characters |
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77 # |
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78 substr-test 2.1 \u1234\u2345\u3456 1 1 \u1234 |
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79 substr-test 2.2 \u1234\u2345\u3456 2 1 \u2345 |
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80 substr-test 2.3 \u1234\u2345\u3456 1 2 \u1234\u2345 |
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81 substr-test 2.4 \u1234\u2345\u3456 -1 1 \u3456 |
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82 substr-test 2.5 a\u1234b\u2345c\u3456c -5 3 b\u2345c |
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83 |
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84 # Basic functionality for BLOBs |
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85 # |
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86 subblob-test 3.1 61626364656667 1 1 61 |
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87 subblob-test 3.2 61626364656667 2 1 62 |
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88 subblob-test 3.3 61626364656667 1 2 6162 |
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89 subblob-test 3.4 61626364656667 1 100 61626364656667 |
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90 subblob-test 3.5 61626364656667 0 1 61 |
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91 subblob-test 3.6 61626364656667 -1 1 67 |
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92 subblob-test 3.7 61626364656667 -1 10 67 |
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93 subblob-test 3.8 61626364656667 -5 3 636465 |
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94 subblob-test 3.9 61626364656667 -7 3 616263 |
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95 subblob-test 3.10 61626364656667 -100 98 6162636465 |
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96 |
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97 # If these blobs were strings, then they would contain multi-byte |
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98 # characters. But since they are blobs, the substr indices refer |
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99 # to bytes. |
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100 # |
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101 subblob-test 4.1 61E188B462E28D8563E3919663 1 1 61 |
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102 subblob-test 4.2 61E188B462E28D8563E3919663 2 1 E1 |
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103 subblob-test 4.3 61E188B462E28D8563E3919663 1 2 61E1 |
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104 subblob-test 4.4 61E188B462E28D8563E3919663 -2 1 96 |
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105 subblob-test 4.5 61E188B462E28D8563E3919663 -5 4 63E39196 |
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106 subblob-test 4.6 61E188B462E28D8563E3919663 -100 98 61E188B462E28D8563E391 |
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107 |
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108 # Two-argument SUBSTR |
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109 # |
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110 proc substr-2-test {id string idx result} { |
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111 db eval { |
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112 DELETE FROM t1; |
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113 INSERT INTO t1(t) VALUES($string) |
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114 } |
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115 do_test substr-$id.1 [subst { |
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116 execsql { |
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117 SELECT substr(t, $idx) FROM t1 |
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118 } |
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119 }] [list $result] |
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120 set qstr '[string map {' ''} $string]' |
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121 do_test substr-$id.2 [subst { |
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122 execsql { |
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123 SELECT substr($qstr, $idx) |
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124 } |
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125 }] [list $result] |
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126 } |
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127 substr-2-test 5.1 abcdefghijklmnop 5 efghijklmnop |
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128 substr-2-test 5.2 abcdef -5 bcdef |
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129 |
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130 finish_test |