881 lines
18 KiB
Perl
881 lines
18 KiB
Perl
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=pod
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=head1 NAME
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TestLib - helper module for writing PostgreSQL's C<prove> tests.
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=head1 SYNOPSIS
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use TestLib;
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# Test basic output of a command
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program_help_ok('initdb');
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program_version_ok('initdb');
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program_options_handling_ok('initdb');
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# Test option combinations
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command_fails(['initdb', '--invalid-option'],
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'command fails with invalid option');
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my $tempdir = TestLib::tempdir;
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command_ok('initdb', '-D', $tempdir);
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# Miscellanea
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print "on Windows" if $TestLib::windows_os;
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my $path = TestLib::perl2host($backup_dir);
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ok(check_mode_recursive($stream_dir, 0700, 0600),
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"check stream dir permissions");
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TestLib::system_log('pg_ctl', 'kill', 'QUIT', $slow_pid);
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=head1 DESCRIPTION
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C<TestLib> contains a set of routines dedicated to environment setup for
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a PostgreSQL regression test run and includes some low-level routines
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aimed at controlling command execution, logging and test functions.
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=cut
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# This module should never depend on any other PostgreSQL regression test
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# modules.
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package TestLib;
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use strict;
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use warnings;
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use Config;
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use Cwd;
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use Exporter 'import';
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use Fcntl qw(:mode);
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use File::Basename;
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use File::Find;
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use File::Spec;
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use File::stat qw(stat);
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use File::Temp ();
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use IPC::Run;
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use SimpleTee;
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# specify a recent enough version of Test::More to support the
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# done_testing() function
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use Test::More 0.87;
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our @EXPORT = qw(
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generate_ascii_string
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slurp_dir
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slurp_file
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append_to_file
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check_mode_recursive
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chmod_recursive
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check_pg_config
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system_or_bail
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system_log
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run_log
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run_command
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command_ok
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command_fails
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command_exit_is
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program_help_ok
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program_version_ok
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program_options_handling_ok
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command_like
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command_like_safe
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command_fails_like
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command_checks_all
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$windows_os
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$use_unix_sockets
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);
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our ($windows_os, $use_unix_sockets, $tmp_check, $log_path, $test_logfile);
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BEGIN
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{
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# Set to untranslated messages, to be able to compare program output
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# with expected strings.
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delete $ENV{LANGUAGE};
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delete $ENV{LC_ALL};
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$ENV{LC_MESSAGES} = 'C';
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delete $ENV{PGCONNECT_TIMEOUT};
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delete $ENV{PGDATA};
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delete $ENV{PGDATABASE};
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delete $ENV{PGHOSTADDR};
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delete $ENV{PGREQUIRESSL};
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delete $ENV{PGSERVICE};
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delete $ENV{PGSSLMODE};
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delete $ENV{PGUSER};
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delete $ENV{PGPORT};
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delete $ENV{PGHOST};
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delete $ENV{PG_COLOR};
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$ENV{PGAPPNAME} = basename($0);
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# Must be set early
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$windows_os = $Config{osname} eq 'MSWin32' || $Config{osname} eq 'msys';
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if ($windows_os)
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{
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require Win32API::File;
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Win32API::File->import(qw(createFile OsFHandleOpen CloseHandle));
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}
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# Specifies whether to use Unix sockets for test setups. On
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# Windows we don't use them by default since it's not universally
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# supported, but it can be overridden if desired.
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$use_unix_sockets =
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(!$windows_os || defined $ENV{PG_TEST_USE_UNIX_SOCKETS});
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}
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=pod
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=head1 EXPORTED VARIABLES
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=over
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=item C<$windows_os>
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Set to true when running under Windows, except on Cygwin.
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=back
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=cut
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INIT
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{
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# Return EPIPE instead of killing the process with SIGPIPE. An affected
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# test may still fail, but it's more likely to report useful facts.
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$SIG{PIPE} = 'IGNORE';
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# Determine output directories, and create them. The base path is the
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# TESTDIR environment variable, which is normally set by the invoking
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# Makefile.
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$tmp_check = $ENV{TESTDIR} ? "$ENV{TESTDIR}/tmp_check" : "tmp_check";
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$log_path = "$tmp_check/log";
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mkdir $tmp_check;
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mkdir $log_path;
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# Open the test log file, whose name depends on the test name.
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$test_logfile = basename($0);
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$test_logfile =~ s/\.[^.]+$//;
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$test_logfile = "$log_path/regress_log_$test_logfile";
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open my $testlog, '>', $test_logfile
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or die "could not open STDOUT to logfile \"$test_logfile\": $!";
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# Hijack STDOUT and STDERR to the log file
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open(my $orig_stdout, '>&', \*STDOUT);
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open(my $orig_stderr, '>&', \*STDERR);
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open(STDOUT, '>&', $testlog);
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open(STDERR, '>&', $testlog);
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# The test output (ok ...) needs to be printed to the original STDOUT so
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# that the 'prove' program can parse it, and display it to the user in
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# real time. But also copy it to the log file, to provide more context
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# in the log.
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my $builder = Test::More->builder;
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my $fh = $builder->output;
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tie *$fh, "SimpleTee", $orig_stdout, $testlog;
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$fh = $builder->failure_output;
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tie *$fh, "SimpleTee", $orig_stderr, $testlog;
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# Enable auto-flushing for all the file handles. Stderr and stdout are
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# redirected to the same file, and buffering causes the lines to appear
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# in the log in confusing order.
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autoflush STDOUT 1;
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autoflush STDERR 1;
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autoflush $testlog 1;
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}
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END
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{
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# Test files have several ways of causing prove_check to fail:
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# 1. Exit with a non-zero status.
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# 2. Call ok(0) or similar, indicating that a constituent test failed.
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# 3. Deviate from the planned number of tests.
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#
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# Preserve temporary directories after (1) and after (2).
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$File::Temp::KEEP_ALL = 1 unless $? == 0 && all_tests_passing();
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}
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=pod
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=head1 ROUTINES
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=over
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=item all_tests_passing()
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Return 1 if all the tests run so far have passed. Otherwise, return 0.
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=cut
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sub all_tests_passing
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{
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foreach my $status (Test::More->builder->summary)
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{
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return 0 unless $status;
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}
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return 1;
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}
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=pod
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=item tempdir(prefix)
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Securely create a temporary directory inside C<$tmp_check>, like C<mkdtemp>,
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and return its name. The directory will be removed automatically at the
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end of the tests.
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If C<prefix> is given, the new directory is templated as C<${prefix}_XXXX>.
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Otherwise the template is C<tmp_test_XXXX>.
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=cut
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sub tempdir
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{
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my ($prefix) = @_;
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$prefix = "tmp_test" unless defined $prefix;
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return File::Temp::tempdir(
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$prefix . '_XXXX',
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DIR => $tmp_check,
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CLEANUP => 1);
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}
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=pod
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=item tempdir_short()
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As above, but the directory is outside the build tree so that it has a short
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name, to avoid path length issues.
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=cut
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sub tempdir_short
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{
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return File::Temp::tempdir(CLEANUP => 1);
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}
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=pod
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=item perl2host()
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Translate a Perl file name to a host file name. Currently, this is a no-op
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except for the case of Perl=msys and host=mingw32. The subject need not
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exist, but its parent directory must exist.
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=cut
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sub perl2host
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{
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my ($subject) = @_;
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return $subject unless $Config{osname} eq 'msys';
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my $here = cwd;
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my $leaf;
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if (chdir $subject)
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{
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$leaf = '';
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}
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else
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{
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$leaf = '/' . basename $subject;
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my $parent = dirname $subject;
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chdir $parent or die "could not chdir \"$parent\": $!";
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}
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# this odd way of calling 'pwd -W' is the only way that seems to work.
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my $dir = qx{sh -c "pwd -W"};
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chomp $dir;
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chdir $here;
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return $dir . $leaf;
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}
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=pod
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=item system_log(@cmd)
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Run (via C<system()>) the command passed as argument; the return
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value is passed through.
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=cut
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sub system_log
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{
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print("# Running: " . join(" ", @_) . "\n");
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return system(@_);
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}
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=pod
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=item system_or_bail(@cmd)
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Run (via C<system()>) the command passed as argument, and returns
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if the command is successful.
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On failure, abandon further tests and exit the program.
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=cut
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sub system_or_bail
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{
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if (system_log(@_) != 0)
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{
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BAIL_OUT("system $_[0] failed");
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}
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return;
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}
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=pod
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=item run_log(@cmd)
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Run the given command via C<IPC::Run::run()>, noting it in the log.
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The return value from the command is passed through.
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=cut
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sub run_log
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{
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print("# Running: " . join(" ", @{ $_[0] }) . "\n");
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return IPC::Run::run(@_);
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}
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=pod
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=item run_command(cmd)
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Run (via C<IPC::Run::run()>) the command passed as argument.
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The return value from the command is ignored.
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The return value is C<($stdout, $stderr)>.
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=cut
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sub run_command
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{
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my ($cmd) = @_;
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my ($stdout, $stderr);
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my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
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chomp($stdout);
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chomp($stderr);
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return ($stdout, $stderr);
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}
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=pod
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=item generate_ascii_string(from_char, to_char)
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Generate a string made of the given range of ASCII characters.
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=cut
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sub generate_ascii_string
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{
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my ($from_char, $to_char) = @_;
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my $res;
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for my $i ($from_char .. $to_char)
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{
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$res .= sprintf("%c", $i);
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}
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return $res;
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}
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=pod
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=item slurp_dir(dir)
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Return the complete list of entries in the specified directory.
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=cut
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sub slurp_dir
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{
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my ($dir) = @_;
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opendir(my $dh, $dir)
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or die "could not opendir \"$dir\": $!";
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my @direntries = readdir $dh;
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closedir $dh;
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return @direntries;
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}
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=pod
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=item slurp_file(filename)
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Return the full contents of the specified file.
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=cut
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sub slurp_file
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{
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my ($filename) = @_;
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local $/;
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my $contents;
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if ($Config{osname} ne 'MSWin32')
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{
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open(my $in, '<', $filename)
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or die "could not read \"$filename\": $!";
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$contents = <$in>;
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close $in;
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}
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else
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{
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my $fHandle = createFile($filename, "r", "rwd")
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or die "could not open \"$filename\": $^E";
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OsFHandleOpen(my $fh = IO::Handle->new(), $fHandle, 'r')
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or die "could not read \"$filename\": $^E\n";
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$contents = <$fh>;
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CloseHandle($fHandle)
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or die "could not close \"$filename\": $^E\n";
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}
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$contents =~ s/\r\n/\n/g if $Config{osname} eq 'msys';
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return $contents;
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}
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=pod
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=item append_to_file(filename, str)
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Append a string at the end of a given file. (Note: no newline is appended at
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end of file.)
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=cut
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sub append_to_file
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{
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my ($filename, $str) = @_;
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open my $fh, ">>", $filename
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or die "could not write \"$filename\": $!";
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print $fh $str;
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close $fh;
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return;
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}
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=pod
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=item check_mode_recursive(dir, expected_dir_mode, expected_file_mode, ignore_list)
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Check that all file/dir modes in a directory match the expected values,
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ignoring files in C<ignore_list> (basename only).
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=cut
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sub check_mode_recursive
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{
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my ($dir, $expected_dir_mode, $expected_file_mode, $ignore_list) = @_;
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# Result defaults to true
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my $result = 1;
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find(
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{
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follow_fast => 1,
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wanted => sub {
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# Is file in the ignore list?
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foreach my $ignore ($ignore_list ? @{$ignore_list} : [])
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{
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if ("$dir/$ignore" eq $File::Find::name)
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{
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return;
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}
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}
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# Allow ENOENT. A running server can delete files, such as
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# those in pg_stat. Other stat() failures are fatal.
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my $file_stat = stat($File::Find::name);
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unless (defined($file_stat))
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{
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my $is_ENOENT = $!{ENOENT};
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my $msg = "unable to stat $File::Find::name: $!";
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if ($is_ENOENT)
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{
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warn $msg;
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return;
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}
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else
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{
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die $msg;
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}
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}
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my $file_mode = S_IMODE($file_stat->mode);
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# Is this a file?
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if (S_ISREG($file_stat->mode))
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{
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if ($file_mode != $expected_file_mode)
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{
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print(
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*STDERR,
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sprintf("$File::Find::name mode must be %04o\n",
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$expected_file_mode));
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$result = 0;
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return;
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}
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}
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# Else a directory?
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elsif (S_ISDIR($file_stat->mode))
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{
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if ($file_mode != $expected_dir_mode)
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{
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print(
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*STDERR,
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sprintf("$File::Find::name mode must be %04o\n",
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$expected_dir_mode));
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$result = 0;
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return;
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}
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}
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# Else something we can't handle
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else
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{
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die "unknown file type for $File::Find::name";
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}
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}
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},
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$dir);
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return $result;
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}
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=pod
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=item chmod_recursive(dir, dir_mode, file_mode)
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C<chmod> recursively each file and directory within the given directory.
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=cut
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sub chmod_recursive
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{
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my ($dir, $dir_mode, $file_mode) = @_;
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find(
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{
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follow_fast => 1,
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wanted => sub {
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my $file_stat = stat($File::Find::name);
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if (defined($file_stat))
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{
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chmod(
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S_ISDIR($file_stat->mode) ? $dir_mode : $file_mode,
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$File::Find::name
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) or die "unable to chmod $File::Find::name";
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}
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}
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},
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$dir);
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return;
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}
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=pod
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=item check_pg_config(regexp)
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Return the number of matches of the given regular expression
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within the installation's C<pg_config.h>.
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=cut
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sub check_pg_config
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{
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my ($regexp) = @_;
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my ($stdout, $stderr);
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my $result = IPC::Run::run [ 'pg_config', '--includedir' ], '>',
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\$stdout, '2>', \$stderr
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or die "could not execute pg_config";
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chomp($stdout);
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$stdout =~ s/\r$//;
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open my $pg_config_h, '<', "$stdout/pg_config.h" or die "$!";
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my $match = (grep { /^$regexp/ } <$pg_config_h>);
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close $pg_config_h;
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return $match;
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}
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=pod
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=back
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=head1 Test::More-LIKE METHODS
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=over
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|
|
=item command_ok(cmd, test_name)
|
|
|
|
Check that the command runs (via C<run_log>) successfully.
|
|
|
|
=cut
|
|
|
|
sub command_ok
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd, $test_name) = @_;
|
|
my $result = run_log($cmd);
|
|
ok($result, $test_name);
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item command_fails(cmd, test_name)
|
|
|
|
Check that the command fails (when run via C<run_log>).
|
|
|
|
=cut
|
|
|
|
sub command_fails
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd, $test_name) = @_;
|
|
my $result = run_log($cmd);
|
|
ok(!$result, $test_name);
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item command_exit_is(cmd, expected, test_name)
|
|
|
|
Check that the command exit code matches the expected exit code.
|
|
|
|
=cut
|
|
|
|
sub command_exit_is
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd, $expected, $test_name) = @_;
|
|
print("# Running: " . join(" ", @{$cmd}) . "\n");
|
|
my $h = IPC::Run::start $cmd;
|
|
$h->finish();
|
|
|
|
# On Windows, the exit status of the process is returned directly as the
|
|
# process's exit code, while on Unix, it's returned in the high bits
|
|
# of the exit code (see WEXITSTATUS macro in the standard <sys/wait.h>
|
|
# header file). IPC::Run's result function always returns exit code >> 8,
|
|
# assuming the Unix convention, which will always return 0 on Windows as
|
|
# long as the process was not terminated by an exception. To work around
|
|
# that, use $h->full_results on Windows instead.
|
|
my $result =
|
|
($Config{osname} eq "MSWin32")
|
|
? ($h->full_results)[0]
|
|
: $h->result(0);
|
|
is($result, $expected, $test_name);
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item program_help_ok(cmd)
|
|
|
|
Check that the command supports the C<--help> option.
|
|
|
|
=cut
|
|
|
|
sub program_help_ok
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd) = @_;
|
|
my ($stdout, $stderr);
|
|
print("# Running: $cmd --help\n");
|
|
my $result = IPC::Run::run [ $cmd, '--help' ], '>', \$stdout, '2>',
|
|
\$stderr;
|
|
ok($result, "$cmd --help exit code 0");
|
|
isnt($stdout, '', "$cmd --help goes to stdout");
|
|
is($stderr, '', "$cmd --help nothing to stderr");
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item program_version_ok(cmd)
|
|
|
|
Check that the command supports the C<--version> option.
|
|
|
|
=cut
|
|
|
|
sub program_version_ok
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd) = @_;
|
|
my ($stdout, $stderr);
|
|
print("# Running: $cmd --version\n");
|
|
my $result = IPC::Run::run [ $cmd, '--version' ], '>', \$stdout, '2>',
|
|
\$stderr;
|
|
ok($result, "$cmd --version exit code 0");
|
|
isnt($stdout, '', "$cmd --version goes to stdout");
|
|
is($stderr, '', "$cmd --version nothing to stderr");
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item program_options_handling_ok(cmd)
|
|
|
|
Check that a command with an invalid option returns a non-zero
|
|
exit code and error message.
|
|
|
|
=cut
|
|
|
|
sub program_options_handling_ok
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd) = @_;
|
|
my ($stdout, $stderr);
|
|
print("# Running: $cmd --not-a-valid-option\n");
|
|
my $result = IPC::Run::run [ $cmd, '--not-a-valid-option' ], '>',
|
|
\$stdout,
|
|
'2>', \$stderr;
|
|
ok(!$result, "$cmd with invalid option nonzero exit code");
|
|
isnt($stderr, '', "$cmd with invalid option prints error message");
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item command_like(cmd, expected_stdout, test_name)
|
|
|
|
Check that the command runs successfully and the output
|
|
matches the given regular expression.
|
|
|
|
=cut
|
|
|
|
sub command_like
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd, $expected_stdout, $test_name) = @_;
|
|
my ($stdout, $stderr);
|
|
print("# Running: " . join(" ", @{$cmd}) . "\n");
|
|
my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
|
|
ok($result, "$test_name: exit code 0");
|
|
is($stderr, '', "$test_name: no stderr");
|
|
like($stdout, $expected_stdout, "$test_name: matches");
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item command_like_safe(cmd, expected_stdout, test_name)
|
|
|
|
Check that the command runs successfully and the output
|
|
matches the given regular expression. Doesn't assume that the
|
|
output files are closed.
|
|
|
|
=cut
|
|
|
|
sub command_like_safe
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
|
|
# Doesn't rely on detecting end of file on the file descriptors,
|
|
# which can fail, causing the process to hang, notably on Msys
|
|
# when used with 'pg_ctl start'
|
|
my ($cmd, $expected_stdout, $test_name) = @_;
|
|
my ($stdout, $stderr);
|
|
my $stdoutfile = File::Temp->new();
|
|
my $stderrfile = File::Temp->new();
|
|
print("# Running: " . join(" ", @{$cmd}) . "\n");
|
|
my $result = IPC::Run::run $cmd, '>', $stdoutfile, '2>', $stderrfile;
|
|
$stdout = slurp_file($stdoutfile);
|
|
$stderr = slurp_file($stderrfile);
|
|
ok($result, "$test_name: exit code 0");
|
|
is($stderr, '', "$test_name: no stderr");
|
|
like($stdout, $expected_stdout, "$test_name: matches");
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item command_fails_like(cmd, expected_stderr, test_name)
|
|
|
|
Check that the command fails and the error message matches
|
|
the given regular expression.
|
|
|
|
=cut
|
|
|
|
sub command_fails_like
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
my ($cmd, $expected_stderr, $test_name) = @_;
|
|
my ($stdout, $stderr);
|
|
print("# Running: " . join(" ", @{$cmd}) . "\n");
|
|
my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
|
|
ok(!$result, "$test_name: exit code not 0");
|
|
like($stderr, $expected_stderr, "$test_name: matches");
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=item command_checks_all(cmd, ret, out, err, test_name)
|
|
|
|
Run a command and check its status and outputs.
|
|
Arguments:
|
|
|
|
=over
|
|
|
|
=item C<cmd>: Array reference of command and arguments to run
|
|
|
|
=item C<ret>: Expected exit code
|
|
|
|
=item C<out>: Expected stdout from command
|
|
|
|
=item C<err>: Expected stderr from command
|
|
|
|
=item C<test_name>: test name
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub command_checks_all
|
|
{
|
|
local $Test::Builder::Level = $Test::Builder::Level + 1;
|
|
|
|
my ($cmd, $expected_ret, $out, $err, $test_name) = @_;
|
|
|
|
# run command
|
|
my ($stdout, $stderr);
|
|
print("# Running: " . join(" ", @{$cmd}) . "\n");
|
|
IPC::Run::run($cmd, '>', \$stdout, '2>', \$stderr);
|
|
|
|
# See http://perldoc.perl.org/perlvar.html#%24CHILD_ERROR
|
|
my $ret = $?;
|
|
die "command exited with signal " . ($ret & 127)
|
|
if $ret & 127;
|
|
$ret = $ret >> 8;
|
|
|
|
# check status
|
|
ok($ret == $expected_ret,
|
|
"$test_name status (got $ret vs expected $expected_ret)");
|
|
|
|
# check stdout
|
|
for my $re (@$out)
|
|
{
|
|
like($stdout, $re, "$test_name stdout /$re/");
|
|
}
|
|
|
|
# check stderr
|
|
for my $re (@$err)
|
|
{
|
|
like($stderr, $re, "$test_name stderr /$re/");
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
=pod
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
1;
|