NAME

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

SYNOPSIS

        # 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

       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

       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

       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

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

TODO

       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 individual 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

AUTHOR

       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

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