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annotate proxy_cache_revalidate.t @ 354:fb366c51eac6

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Tests: reduce race in cache revalidate test.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 18 Nov 2013 21:37:19 +0400
parents 19f58e91617a
children c28ecaef065f
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19f58e91617a Tests: proxy cache revalidate tests.
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1 #!/usr/bin/perl
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2
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3 # (C) Maxim Dounin
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4
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5 # Tests for http proxy cache revalidation with conditional requests.
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6
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7 ###############################################################################
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8
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9 use warnings;
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10 use strict;
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11
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12 use Test::More;
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13 use Socket qw/ CRLF /;
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14
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15 BEGIN { use FindBin; chdir($FindBin::Bin); }
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16
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17 use lib 'lib';
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18 use Test::Nginx qw/ :DEFAULT :gzip /;
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19
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20 ###############################################################################
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21
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22 select STDERR; $| = 1;
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23 select STDOUT; $| = 1;
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24
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25 plan(skip_all => 'win32') if $^O eq 'MSWin32';
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26
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27 my $t = Test::Nginx->new()->has(qw/http proxy cache/)
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28 ->write_file_expand('nginx.conf', <<'EOF');
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29
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30 %%TEST_GLOBALS%%
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31
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32 daemon off;
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33
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34 events {
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35 }
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36
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37 http {
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38 %%TEST_GLOBALS_HTTP%%
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39
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40 proxy_cache_path %%TESTDIR%%/cache levels=1:2
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41 keys_zone=one:1m;
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42
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43 proxy_cache_revalidate on;
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44
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45 server {
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46 listen 127.0.0.1:8080;
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47 server_name localhost;
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48
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49 location / {
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50 proxy_pass http://127.0.0.1:8081;
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51 proxy_cache one;
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52
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53 proxy_cache_valid 200 1s;
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54
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55 add_header X-Cache-Status $upstream_cache_status;
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56 }
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57 }
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58
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59 server {
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60 listen 127.0.0.1:8081;
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61 server_name localhost;
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62 }
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63 }
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64
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65 EOF
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66
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67 $t->write_file('t', 'SEE-THIS');
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68 $t->write_file('t2', 'SEE-THIS');
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69
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70 eval {
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71 open OLDERR, ">&", \*STDERR; close STDERR;
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72 $t->run();
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73 open STDERR, ">&", \*OLDERR;
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74 };
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75 plan(skip_all => 'no proxy_cache_revalidate') if $@;
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76 $t->plan(9);
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77
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78 ###############################################################################
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79
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80 # request documents and make sure they are cached
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81
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82 like(http_get('/t'), qr/X-Cache-Status: MISS.*SEE/ms, 'request');
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83 like(http_get('/t'), qr/X-Cache-Status: HIT.*SEE/ms, 'request cached');
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84
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85 like(http_get('/t2'), qr/X-Cache-Status: MISS.*SEE/ms, '2nd request');
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86 like(http_get('/t2'), qr/X-Cache-Status: HIT.*SEE/ms, '2nd request cached');
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87
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88 # wait for a while for cached responses to expire
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89
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90 select undef, undef, undef, 2.5;
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91
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92 # 1st document isn't modified, and should be revalidated on first request
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93 # (a 304 status code will appear in backend's logs), then cached again
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94
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95 like(http_get('/t'), qr/X-Cache-Status: REVALIDATED.*SEE/ms, 'revalidated');
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96 like(http_get('/t'), qr/X-Cache-Status: HIT.*SEE/ms, 'request cached');
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97
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98 select undef, undef, undef, 0.1;
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99 like(read_file($t->testdir() . '/access.log'), qr/ 304 /, 'not modified');
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100
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101 # 2nd document is recreated with a new content
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102
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103 $t->write_file('t2', 'NEW');
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104 like(http_get('/t2'), qr/X-Cache-Status: EXPIRED.*NEW/ms, 'revalidate failed');
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105 like(http_get('/t2'), qr/X-Cache-Status: HIT.*NEW/ms, 'new response cached');
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106
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107 ###############################################################################
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108
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109 sub read_file {
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110 my ($file) = @_;
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111 my $log;
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112
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113 local $/;
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114
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115 open LOG, $file or die "Can't open $file: $!\n";
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116 $log = <LOG>;
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117 close LOG;
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118
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119 return $log;
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120 }
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121
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122 ###############################################################################