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1 | ## |
2 | # DBM::Deep Test |
3 | ## |
4 | use strict; |
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5 | use Test::More; |
6 | |
7 | plan skip_all => "Skipping the optimize tests on Win32/cygwin for now." |
8 | if ( $^O eq 'MSWin32' || $^O eq 'cygwin' ); |
9 | |
10 | plan tests => 9; |
11 | |
12 | use t::common qw( new_fh ); |
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13 | |
14 | use_ok( 'DBM::Deep' ); |
15 | |
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16 | my ($fh, $filename) = new_fh(); |
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17 | my $db = DBM::Deep->new( |
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18 | file => $filename, |
19 | autoflush => 1, |
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20 | ); |
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21 | |
22 | ## |
23 | # create some unused space |
24 | ## |
25 | $db->{key1} = "value1"; |
26 | $db->{key2} = "value2"; |
27 | |
28 | $db->{a} = {}; |
29 | $db->{a}{b} = []; |
30 | $db->{a}{c} = 'value2'; |
31 | |
32 | my $b = $db->{a}->{b}; |
33 | $b->[0] = 1; |
34 | $b->[1] = 2; |
35 | $b->[2] = {}; |
36 | $b->[2]->{c} = []; |
37 | |
38 | my $c = $b->[2]->{c}; |
39 | $c->[0] = 'd'; |
40 | $c->[1] = {}; |
41 | $c->[1]->{e} = 'f'; |
42 | |
43 | undef $c; |
44 | undef $b; |
45 | |
46 | delete $db->{key2}; |
47 | delete $db->{a}{b}; |
48 | |
49 | ## |
50 | # take byte count readings before, and after optimize |
51 | ## |
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52 | my $before = (stat($filename))[7]; |
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53 | my $result = $db->optimize(); |
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54 | my $after = (stat($filename))[7]; |
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55 | |
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56 | ok( $result, "optimize succeeded" ); |
57 | ok( $after < $before, "file size has shrunk" ); # make sure file shrunk |
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58 | |
59 | is( $db->{key1}, 'value1', "key1's value is still there after optimize" ); |
60 | is( $db->{a}{c}, 'value2', "key2's value is still there after optimize" ); |
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61 | |
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62 | $db->_get_self->_storage->close( $db->_get_self ); |
63 | |
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64 | ## |
65 | # now for the tricky one -- try to store a new key while file is being |
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66 | # optimized and locked by another process. filehandle should be invalidated, |
67 | # and automatically re-opened transparently. Cannot test on Win32, due to |
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68 | # problems with fork()ing, flock()ing, etc. Win32 very bad. |
69 | ## |
70 | |
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71 | SKIP: { |
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72 | skip "Fork tests skipped until fh/filename question solved.", 4; |
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73 | skip "Fork tests skipped on Win32", 4 |
74 | if $^O eq 'MSWin32' || $^O eq 'cygwin'; |
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75 | |
76 | ## |
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77 | # first things first, get us about 1000 keys so the optimize() will take |
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78 | # at least a few seconds on any machine, and re-open db with locking |
79 | ## |
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80 | for (1..1000) { $db->STORE( $_, $_ +1 ); } |
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81 | undef $db; |
82 | |
83 | ## |
84 | # now, fork a process for the optimize() |
85 | ## |
86 | my $pid = fork(); |
87 | |
88 | unless ( $pid ) { |
89 | # child fork |
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90 | |
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91 | # re-open db |
92 | $db = DBM::Deep->new( |
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93 | file => $filename, |
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94 | autoflush => 1, |
95 | locking => 1 |
96 | ); |
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97 | |
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98 | # optimize and exit |
99 | $db->optimize(); |
100 | |
101 | exit( 0 ); |
102 | } |
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103 | # parent fork |
104 | ok( defined($pid), "fork was successful" ); # make sure fork was successful |
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105 | |
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106 | # re-open db |
107 | $db = DBM::Deep->new( |
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108 | file => $filename, |
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109 | autoflush => 1, |
110 | locking => 1 |
111 | ); |
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112 | |
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113 | # sleep for 1 second to make sure optimize() is running in the other fork |
114 | sleep(1); |
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115 | |
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116 | # now, try to get a lock and store a key |
117 | $db->{parentfork} = "hello"; |
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118 | |
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119 | # see if it was stored successfully |
120 | is( $db->{parentfork}, "hello", "stored key while optimize took place" ); |
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121 | |
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122 | undef $db; |
123 | $db = DBM::Deep->new( |
124 | file => $filename, |
125 | autoflush => 1, |
126 | locking => 1 |
127 | ); |
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128 | |
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129 | # now check some existing values from before |
130 | is( $db->{key1}, 'value1', "key1's value is still there after optimize" ); |
131 | is( $db->{a}{c}, 'value2', "key2's value is still there after optimize" ); |
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132 | } |