Test::SQL::Translator - Test::More test functions for the Schema objects.

SQL-Translator documentation Contained in the SQL-Translator distribution.

Index

Code Index:

NAME

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Test::SQL::Translator - Test::More test functions for the Schema objects.

SYNOPSIS

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 # t/magic.t

 use FindBin '$Bin';
 use Test::More;
 use Test::SQL::Translator;

 # Run parse
 my $sqlt = SQL::Translator->new(
     parser => "Magic",
     filename => "$Bin/data/magic/test.magic",
     ...
 );
 ...
 my $schema = $sqlt->schema;

 # Test the table it produced.
 table_ok( $schema->get_table("Customer"), {
     name => "Customer",
     fields => [
         {
             name => "CustomerID",
             data_type => "INT",
             size => 12,
             default_value => undef,
             is_nullable => 0,
             is_primary_key => 1,
         },
         {
             name => "bar",
             data_type => "VARCHAR",
             size => 255,
             is_nullable => 0,
         },
     ],
     constraints => [
         {
             type => "PRIMARY KEY",
             fields => "CustomerID",
         },
     ],
     indices => [
         {
             name => "barindex",
             fields => ["bar"],
         },
     ],
 });

DESCSIPTION

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Provides a set of Test::More tests for Schema objects. Testing a parsed schema is then as easy as writing a perl data structure describing how you expect the schema to look. Also provides maybe_plan for conditionally running tests based on their dependencies.

The data structures given to the test subs don't have to include all the possible values, only the ones you expect to have changed. Any left out will be tested to make sure they are still at their default value. This is a useful check that you your parser hasn't accidentally set schema values you didn't expect it to.

For an example of the output run the t/16xml-parser.t test.

Tests

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All the tests take a first arg of the schema object to test, followed by a hash ref describing how you expect that object to look (you only need give the attributes you expect to have changed from the default). The 3rd arg is an optional test name to pre-pend to all the generated test names.

table_ok

field_ok

constraint_ok

index_ok

view_ok

trigger_ok

procedure_ok

CONDITIONAL TESTS

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The maybe_plan function handles conditionally running an individual test. It is here to enable running the test suite even when dependencies are missing; not having (for example) GraphViz installed should not keep the test suite from passing.

maybe_plan takes the number of tests to (maybe) run, and a list of modules on which test execution depends:

    maybe_plan(180, 'SQL::Translator::Parser::MySQL');

If one of SQL::Translator::Parser::MySQL's dependencies does not exist, then the test will be skipped.

EXPORTS

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table_ok, field_ok, constraint_ok, index_ok, view_ok, trigger_ok, procedure_ok, maybe_plan

TODO

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Test the tests!
Test Count Constants

Constants to give the number of tests each *_ok sub uses. e.g. How many tests does field_ok run? Can then use these to set up the test plan easily.

Test skipping

As the test subs wrap up lots of tests in one call you can't skip idividual tests only whole sets e.g. a whole table or field. We could add skip_* items to the test hashes to allow per test skips. e.g.

 skip_is_primary_key => "Need to fix primary key parsing.",
yaml test specs

Maybe have the test subs also accept yaml for the test hash ref as its a much nicer for writing big data structures. We can then define tests as in input schema file and test yaml file to compare it against.

BUGS

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AUTHOR

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Mark D. Addison <mark.addison@itn.co.uk>, Darren Chamberlain <darren@cpan.org>.

Thanks to Ken Y. Clark for the original table and field test code taken from his mysql test.

SEE ALSO

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perl(1), SQL::Translator, SQL::Translator::Schema, Test::More.

SQL-Translator documentation Contained in the SQL-Translator distribution. 
package Test::SQL::Translator;

# ----------------------------------------------------------------------
# Copyright (C) 2003 The SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; version 2.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307  USA
# -------------------------------------------------------------------


use strict;
use warnings;
use Test::More;
use SQL::Translator::Schema::Constants;

use base qw(Exporter);
use vars qw($VERSION @EXPORT @EXPORT_OK);
$VERSION = '1.59';
@EXPORT = qw(
    schema_ok
    table_ok
    field_ok
    constraint_ok
    index_ok
    view_ok
    trigger_ok
    procedure_ok
    maybe_plan
);

# $ATTRIBUTES{ <schema_object_name> } = { <attribname> => <default>, ... }
my %ATTRIBUTES = (
    field => {
        name              => undef,
        data_type         => '',
        default_value     => undef,
        size              => '0',
        is_primary_key    => 0,
        is_unique         => 0,
        is_nullable       => 1,
        is_foreign_key    => 0,
        is_auto_increment => 0,
        comments          => '',
        extra             => {},
        # foreign_key_reference,
        is_valid => 1,
        # order
    },
    constraint => {
        name             => '',
        type             => '',
        deferrable       => 1,
        expression       => '',
        is_valid         => 1,
        fields           => [],
        match_type       => '',
        options          => [],
        on_delete        => '',
        on_update        => '',
        reference_fields => [],
        reference_table  => '',
        extra            => {},
    },
    index => {
        fields   => [],
        is_valid => 1,
        name     => "",
        options  => [],
        type     => NORMAL,
        extra    => {},
    },
    view => {
        name     => "",
        sql      => "",
        fields   => [],
        is_valid => 1,
        extra    => {},
    },
    trigger => {
        name                => '',
        perform_action_when => undef,
        database_events     => undef,
        on_table            => undef,
        action              => undef,
        is_valid            => 1,
        extra               => {},
    },
    procedure => {
        name       => '',
        sql        => '',
        parameters => [],
        owner      => '',
        comments   => '',
        extra      => {},
    },
    table => {
        comments    => undef,
        name        => '',
        #primary_key => undef, # pkey constraint
        options     => [],
        #order      => 0,
        fields      => undef,
        constraints => undef,
        indices     => undef,
        is_valid    => 1,
        extra       => {},
    },
    schema => {
        name       => '',
        database   => '',
        procedures => undef,    # [] when set
        tables     => undef,    # [] when set
        triggers   => undef,    # [] when set
        views      => undef,    # [] when set
        is_valid   => 1,
        extra      => {},
    }
);

# Given a test hash and schema object name set any attribute keys not present in
# the test hash to their default value for that schema object type.
# e.g. default_attribs( $test, "field" );
sub default_attribs {
    my ($hashref, $object_type) = @_;

    if ( !exists $ATTRIBUTES{ $object_type } ) {
        die "Can't add default attribs for unknown Schema " 
        .   "object type '$object_type'.";
    }

    for my $attr ( 
        grep { !exists $hashref->{ $_ } }
        keys %{ $ATTRIBUTES{ $object_type } } 
    ) {
        $hashref->{ $attr } = $ATTRIBUTES{ $object_type }{ $attr }
    }

    return $hashref;
}

# Format test name so it will prepend the test names used below.
sub t_name {
    my $name = shift;
    $name ||= "";
    $name = "$name - " if $name;
    return $name;
}

sub field_ok {
    my ($f1,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"field");

    unless ($f1) {
        fail " Field '$test->{name}' doesn't exist!";
        # TODO Do a skip on the following tests. Currently the test counts wont
        # match at the end. So at least it fails.
        return;
    }

    my $full_name = $f1->table->name.".".$test->{name};

    is( $f1->name, $test->{name}, "${t_name}Field '$full_name'" );

    is( $f1->is_valid, $test->{is_valid},
    "$t_name    is ".($test->{is_valid} ? '' : 'not ').'valid' );

    is( $f1->data_type, $test->{data_type},
        "$t_name    type is '$test->{data_type}'" );

    is( $f1->size, $test->{size}, "$t_name    size is '$test->{size}'" );

    is( $f1->default_value, $test->{default_value},
    "$t_name    default value is "
    .(defined($test->{default_value}) ? "'$test->{default_value}'" : "UNDEF" )
    );

    is( $f1->is_nullable, $test->{is_nullable},
    "$t_name    ".($test->{is_nullable} ? 'can' : 'cannot').' be null' );

    is( $f1->is_unique, $test->{is_unique},
    "$t_name    ".($test->{is_unique} ? 'can' : 'cannot').' be unique' );

    is( $f1->is_primary_key, $test->{is_primary_key},
    "$t_name    is ".($test->{is_primary_key} ? '' : 'not ').'a primary_key' );

    is( $f1->is_foreign_key, $test->{is_foreign_key},
    "$t_name    is ".($test->{is_foreign_key} ? '' : 'not').' a foreign_key' );

    is( $f1->is_auto_increment, $test->{is_auto_increment},
    "$t_name    is "
    .($test->{is_auto_increment} ?  '' : 'not ').'an auto_increment' );

    is( $f1->comments, $test->{comments}, "$t_name    comments" );

    is_deeply( { $f1->extra }, $test->{extra}, "$t_name    extra" );
}

sub constraint_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"constraint");

    is( $obj->name, $test->{name}, "${t_name}Constraint '$test->{name}'" );

    is( $obj->type, $test->{type}, "$t_name    type is '$test->{type}'" );

    is( $obj->deferrable, $test->{deferrable},
    "$t_name    ".($test->{deferrable} ? 'can' : 'cannot').' be deferred' );

    is( $obj->is_valid, $test->{is_valid},
    "$t_name    is ".($test->{is_valid} ? '' : 'not ').'valid' );

    is($obj->table->name,$test->{table},"$t_name    table is '$test->{table}'" );

    is( $obj->expression, $test->{expression},
    "$t_name    expression is '$test->{expression}'" );

    is_deeply( [$obj->fields], $test->{fields},
    "$t_name    fields are '".join(",",@{$test->{fields}})."'" );

    is( $obj->reference_table, $test->{reference_table},
    "$t_name    reference_table is '$test->{reference_table}'" );

    is_deeply( [$obj->reference_fields], $test->{reference_fields},
    "$t_name    reference_fields are '".join(",",@{$test->{reference_fields}})."'" );

    is( $obj->match_type, $test->{match_type},
    "$t_name    match_type is '$test->{match_type}'" );

    is( $obj->on_delete, $test->{on_delete},
    "$t_name    on_delete is '$test->{on_delete}'" );

    is( $obj->on_update, $test->{on_update},
    "$t_name    on_update is '$test->{on_update}'" );

    is_deeply( [$obj->options], $test->{options},
    "$t_name    options are '".join(",",@{$test->{options}})."'" );
    
    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );
}

sub index_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"index");

    is( $obj->name, $test->{name}, "${t_name}Index '$test->{name}'" );

    is( $obj->is_valid, $test->{is_valid},
    "$t_name    is ".($test->{is_valid} ? '' : 'not ').'valid' );

    is( $obj->type, $test->{type}, "$t_name    type is '$test->{type}'" );

    is_deeply( [$obj->fields], $test->{fields},
    "$t_name    fields are '".join(",",@{$test->{fields}})."'" );

    is_deeply( [$obj->options], $test->{options},
    "$t_name    options are '".join(",",@{$test->{options}})."'" );
    
    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );
}

sub trigger_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"index");

    is( $obj->name, $test->{name}, "${t_name}Trigger '$test->{name}'" );

    is( $obj->is_valid, $test->{is_valid},
        "$t_name    is ".($test->{is_valid} ? '' : 'not ').'valid' );

    is( $obj->perform_action_when, $test->{perform_action_when},
        "$t_name    perform_action_when is '$test->{perform_action_when}'" );

    is( join(',', $obj->database_events), $test->{database_events},
        sprintf("%s    database_events is '%s'",
            $t_name,
            $test->{'database_events'},
        )
    );

    is( $obj->on_table, $test->{on_table},
        "$t_name    on_table is '$test->{on_table}'" );

    is( $obj->action, $test->{action}, "$t_name    action is '$test->{action}'" );
    
    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );
}

sub view_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"index");

    #isa_ok( $v, 'SQL::Translator::Schema::View', 'View' );

    is( $obj->name, $test->{name}, "${t_name}View '$test->{name}'" );

    is( $obj->is_valid, $test->{is_valid},
    "$t_name    is ".($test->{is_valid} ? '' : 'not ').'valid' );

    is( $obj->sql, $test->{sql}, "$t_name    sql is '$test->{sql}'" );

    is_deeply( [$obj->fields], $test->{fields},
    "$t_name    fields are '".join(",",@{$test->{fields}})."'" );
    
    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );
}

sub procedure_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"index");

    #isa_ok( $v, 'SQL::Translator::Schema::View', 'View' );

    is( $obj->name, $test->{name}, "${t_name}Procedure '$test->{name}'" );

    is( $obj->sql, $test->{sql}, "$t_name    sql is '$test->{sql}'" );

    is_deeply( [$obj->parameters], $test->{parameters},
    "$t_name    parameters are '".join(",",@{$test->{parameters}})."'" );

    is( $obj->comments, $test->{comments}, 
        "$t_name    comments is '$test->{comments}'" );

    is( $obj->owner, $test->{owner}, "$t_name    owner is '$test->{owner}'" );
   
    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );
}

sub table_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"table");
    my %arg = %$test;

    my $tbl_name = $arg{name} || die "Need a table name to test.";
    is( $obj->{name}, $arg{name}, "${t_name}Table '$arg{name}'" );

    is_deeply( [$obj->options], $test->{options},
    "$t_name    options are '".join(",",@{$test->{options}})."'" );

    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );

    # Fields
    if ( $arg{fields} ) {
        my @fldnames = map {$_->{name}} @{$arg{fields}};
        is_deeply( 
            [ map {$_->name}   $obj->get_fields ],
            [ @fldnames ],
            "${t_name}    field names are ".join(", ",@fldnames)
        );
        foreach ( @{$arg{fields}} ) {
            my $f_name = $_->{name} || die "Need a field name to test.";
            next unless my $fld = $obj->get_field($f_name);
            field_ok( $fld, $_, $name );
        }
    }
    else {
        is(scalar($obj->get_fields), undef,
            "${t_name}    has no fields.");
    }

    # Constraints and Indices
    _test_kids($obj, $test, $name, {
        constraint => 'constraints',
        index      => 'indices',
    });
}

sub _test_kids {
    my ( $obj, $test, $name, $kids ) = @_;
    my $t_name   = t_name($name);
    my $obj_name = ref $obj;
    ($obj_name) = $obj_name =~ m/^.*::(.*)$/;

    while ( my ( $object_type, $plural ) = each %$kids ) {
        next unless defined $test->{ $plural };

        if ( my @tests = @{ $test->{ $plural } } ) {
            my $meth = "get_$plural";
            my @objects  = $obj->$meth;
            is( scalar(@objects), scalar(@tests),
                "${t_name}$obj_name has " . scalar(@tests) . " $plural" 
            );

            for my $object (@objects) {
                my $ans = { lc($obj_name) => $obj->name, %{ shift @tests } };

                my $meth = "${object_type}_ok";
                {
                    no strict 'refs';
                    $meth->( $object, $ans, $name );
                }
            }
        }
    }
}

sub schema_ok {
    my ($obj,$test,$name) = @_;
    my $t_name = t_name($name);
    default_attribs($test,"schema");

    is( $obj->name, $test->{name}, "${t_name}Schema name is '$test->{name}'" );

    is( $obj->database, $test->{database},
        "$t_name    database is '$test->{database}'" );
    
    is_deeply( { $obj->extra }, $test->{extra}, "$t_name    extra" );

    is( $obj->is_valid, $test->{is_valid},
    "$t_name    is ".($test->{is_valid} ? '' : 'not ').'valid' );

    # Tables
    if ( $test->{tables} ) {
        is_deeply( [ map {$_->name}   $obj->get_tables ],
                   [ map {$_->{name}} @{$test->{tables}} ],
                   "${t_name}    table names match" );
        foreach ( @{$test->{tables}} ) {
            my $t_name = $_->{name} || die "Need a table name to test.";
            table_ok( $obj->get_table($t_name), $_, $name );
        }
    }
    else {
        is(scalar($obj->get_tables), undef,
            "${t_name}    has no tables.");
    }

    # Procedures, Triggers, Views
    _test_kids($obj, $test, $name, {
        procedure  => 'procedures',
        trigger    => 'triggers',
        view       => 'views',
    });
}

# maybe_plan($ntests, @modules)
#
# Calls plan $ntests if @modules can all be loaded; otherwise,
# calls skip_all with an explanation of why the tests were skipped.
sub maybe_plan {
    my ($ntests, @modules) = @_;
    my @errors;

    for my $module (@modules) {
        eval "use $module;";
        next if !$@;

        if ($@ =~ /Can't locate (\S+)/) {
            my $mod = $1;
            $mod =~ s/\.pm$//;
            $mod =~ s#/#::#g;
            push @errors, $mod;
        }
        elsif ($@ =~ /([\w\:]+ version [\d\.]+) required.+?this is only version/) {
            push @errors, $1;
        }
    }

    if (@errors) {
        my $msg = sprintf "Missing dependenc%s: %s",
            @errors == 1 ? 'y' : 'ies',
            join ", ", @errors;
        plan skip_all => $msg;
    }
    elsif ($ntests and $ntests ne 'no_plan') {
        plan tests => $ntests;
    }
    else {
        plan 'no_plan';
    }
}

1; # compile please ===========================================================
__END__