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Full Discussion: Test condition
Top Forums Shell Programming and Scripting Test condition Post 302252067 by gio001 on Tuesday 28th of October 2008 05:27:10 PM
Old 10-28-2008
Test condition

Hello,
what is the better and correct way to perform a comparison:
I have been using the following with no problems:

if [[ $a = "" ]]
then ....
fi

I have seen this also used :
if [ $b -eq 1 ]
then ....
fi

When I try :
if [ $a = "" ]
then ....
fi

I get an error like .... the test condition expects a parameter.
Can anybody explain? Is it due to the data types and different type allow different comparison constructs?

Thanks!
 

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Bio::Chado::Schema::Test(3pm)				User Contributed Perl Documentation			     Bio::Chado::Schema::Test(3pm)

NAME
Bio::Chado::Schema::Test - Library to be used by Bio::Chado::Schema test scripts. SYNOPSIS
use lib qw(t/lib); use Bio::Chado::Schema::Test; use Test::More; my $schema = Bio::Chado::Schema::Test->init_schema(); DESCRIPTION
This module provides the basic utilities to write tests against Bio::Chado::Schema. METHODS
init_schema my $schema = Bio::Chado::Schema::Test->init_schema( deploy => 1, populate => 1, storage_type => '::DBI::Replicated', storage_type_args => { balancer_type=>'DBIx::Class::Storage::DBI::Replicated::Balancer::Random' }, ); This method removes the test SQLite database in t/var/BCS.db and then creates a new, empty database. This method will call deploy_schema() by default, unless the deploy flag is set to 0. This method will call populate_schema() if the populate argument is set to a true value. has_custom_dsn Returns true if the BCS_TEST_DSN environment variable is set. deploy_schema Bio::Chado::Schema::Test->deploy_schema( $schema ); This method does one of two things to the schema. It can either call the experimental $schema->deploy() if the BCSTEST_SQLT_DEPLOY environment variable is set, otherwise the default is to read in the t/lib/sqlite.sql file and execute the SQL within. Either way you end up with a fresh set of tables for testing. populate_schema Bio::Chado::Schema::Test->populate_schema( $schema ); After you deploy your schema you can use this method to populate the tables with test data. perl v5.14.2 2011-11-08 Bio::Chado::Schema::Test(3pm)
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