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