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+ # !/usr/bin/perl
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+
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+ # (C) Sergey Kandaurov
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+ # (C) Nginx, Inc.
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+
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+ # Tests for binary upgrade.
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+
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+ # ##############################################################################
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+
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+ use warnings;
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+ use strict;
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+
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+ use Test::More;
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+
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+ BEGIN { use FindBin; chdir ($FindBin::Bin ); }
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+
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+ use lib ' lib' ;
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+ use Test::Nginx;
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+
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+ # ##############################################################################
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+
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+ select STDERR ; $| = 1;
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+ select STDOUT ; $| = 1;
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+
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+ plan(skip_all => ' can leave orphaned process group' )
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+ unless $ENV {TEST_NGINX_UNSAFE };
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+
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+ my $t = Test::Nginx-> new()-> plan(2)-> write_file_expand(' nginx.conf' , <<'EOF' );
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+
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+ %%TEST_GLOBALS%%
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+
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+ events {
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+ }
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+
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+ EOF
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+
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+ $t -> run();
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+
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+ # ##############################################################################
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+
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+ my $pid = $t -> read_file(' nginx.pid' );
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+ ok($pid , ' master pid' );
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+
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+ kill ' USR2' , $pid ;
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+
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+ for (1 .. 10) {
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+ last if -e $t -> testdir() . ' /nginx.pid'
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+ && -e $t -> testdir() . ' /nginx.pid.oldbin' ;
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+ select undef , undef , undef , 0.2
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+ }
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+
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+ isnt($t -> read_file(' nginx.pid' ), $pid , ' master pid changed' );
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+
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+ kill ' QUIT' , $pid ;
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+
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+ # ##############################################################################
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