NAME

    Test::DB - Temporary Testing Databases

ABSTRACT

    Temporary Databases for Testing

SYNOPSIS

      use Test::DB;
    
      my $tdb = Test::DB->new;
    
      # my $tdbo = $tdb->create(database => 'sqlite');
    
      # my $dbh = $tdbo->dbh;

DESCRIPTION

    This package provides a framework for setting up and tearing down
    temporary databases for testing purposes. This framework requires a
    user (optionally with password) which has the ability to create new
    databases and works by creating test-specific databases owned by the
    user specified. Note: Test databases are not automatically destroyed
    and should be cleaned up manually by call the destroy method on the
    database-specific test database object.

 process

    on create, clone

    #1

      Establish a connection to the DB using some "initial" database.

        my $tdbo = $tdb->postgres(initial => 'template0');

    #2

      Using the established connection, create the test/temporary database.

        $tdbo->create;

    #3

      Establish a connection to the newly created test/temporary database.

        $tdbo->create->dbh;

    #4

      Make the test database object immutable.

        $tdbo->create->database('example'); # error

    on destroy

    #1

      Establish a connection to the DB using the "initial" database.

        # using the created test/temporary database object

    #2

      Using the established connection, drop the test/temporary database.

        $tdbo->destroy;

 usages

    using DBI

    #1

        my $tdb = Test::DB->new;
        my $dbh = $tdb->sqlite(%options)->dbh;

    using DBIx::Class

    #1

        my $tdb = Test::DB->new;
        my $tdbo = $tdb->postgres(%options)->create;
        my $schema = DBIx::Class::Schema->connect(
          dsn => $tdbo->dsn,
          username => $tdbo->username,
          password => $tdbo->password,
        );

    using Mojo::mysql

    #1

        my $tdb = Test::DB->new;
        my $tdbo = $tdb->mysql(%options)->create;
        my $mysql = Mojo::mysql->new($tdbo->uri);

    using Mojo::Pg

    #1

        my $tdb = Test::DB->new;
        my $tdbo = $tdb->postgres(%options)->create;
        my $postgres = Mojo::Pg->new($tdbo->uri);

    using Mojo::Pg (with cloning)

    #1

        my $tdb = Test::DB->new;
        my $tdbo = $tdb->postgres(%options)->clone('template0');
        my $postgres = Mojo::Pg->new($tdbo->uri);

    using Mojo::SQLite

    #1

        my $tdb = Test::DB->new;
        my $tdbo = $tdb->sqlite(%options)->create;
        my $sqlite = Mojo::SQLite->new($tdbo->uri);

LIBRARIES

    This package uses type constraints from:

    Types::Standard

METHODS

    This package implements the following methods:

 clone

      clone(Str :$database, Str %options) : Maybe[InstanceOf["Test::DB::Object"]]

    The clone method generates a database based on the type and database
    template specified and returns a Test::DB::Object with an active
    connection, dbh and dsn. If the database specified doesn't have a
    corresponding database driver this method will returned the undefined
    value. The type of database can be omitted if the TESTDB_DATABASE
    environment variable is set, if not the type of database must be either
    sqlite, mysql, mssql or postgres. Any options provided are passed along
    to the test database object class constructor.

    clone example #1

        # given: synopsis
      
        $ENV{TESTDB_DATABASE} = 'postgres';
      
        $tdb->clone(template => 'template0');

    clone example #2

        # given: synopsis
      
        $ENV{TESTDB_DATABASE} = 'postgres';
        $ENV{TESTDB_TEMPLATE} = 'template0';
      
        $tdb->clone;

    clone example #3

        # given: synopsis
      
        $ENV{TESTDB_TEMPLATE} = 'template0';
      
        $tdb->clone(database => 'postgres');

 create

      create(Str :$database, Str %options) : Maybe[InstanceOf["Test::DB::Object"]]

    The create method generates a database based on the type specified and
    returns a Test::DB::Object with an active connection, dbh and dsn. If
    the database specified doesn't have a corresponding database driver
    this method will returned the undefined value. The type of database can
    be omitted if the TESTDB_DATABASE environment variable is set, if not
    the type of database must be either sqlite, mysql, mssql or postgres.
    Any options provided are passed along to the test database object class
    constructor.

    create example #1

        # given: synopsis
      
        $tdb->create;

    create example #2

        # given: synopsis
      
        $ENV{TESTDB_DATABASE} = 'sqlite';
      
        $tdb->create;

    create example #3

        # given: synopsis
      
        $tdb->create(database => 'sqlite');

 mssql

      mssql(Str %options) : Maybe[InstanceOf["Test::DB::Object"]]

    The mssql method builds and returns a Test::DB::Mssql object.

    mssql example #1

        # given: synopsis
      
        $tdb->mssql;

 mysql

      mysql(Str %options) : Maybe[InstanceOf["Test::DB::Object"]]

    The mysql method builds and returns a Test::DB::Mysql object.

    mysql example #1

        # given: synopsis
      
        $tdb->mysql;

 postgres

      postgres(Str %options) : Maybe[InstanceOf["Test::DB::Object"]]

    The postgres method builds and returns a Test::DB::Postgres object.

    postgres example #1

        # given: synopsis
      
        $tdb->postgres;

 sqlite

      sqlite(Str %options) : Maybe[InstanceOf["Test::DB::Object"]]

    The sqlite method builds and returns a Test::DB::Sqlite object.

    sqlite example #1

        # given: synopsis
      
        $tdb->sqlite;

AUTHOR

    Al Newkirk, awncorp@cpan.org

LICENSE

    Copyright (C) 2011-2019, Al Newkirk, et al.

    This is free software; you can redistribute it and/or modify it under
    the terms of the The Apache License, Version 2.0, as elucidated in the
    "license file"
    <https://github.com/iamalnewkirk/test-db/blob/master/LICENSE>.

PROJECT

    Wiki <https://github.com/iamalnewkirk/test-db/wiki>

    Project <https://github.com/iamalnewkirk/test-db>

    Initiatives <https://github.com/iamalnewkirk/test-db/projects>

    Milestones <https://github.com/iamalnewkirk/test-db/milestones>

    Contributing
    <https://github.com/iamalnewkirk/test-db/blob/master/CONTRIBUTE.md>

    Issues <https://github.com/iamalnewkirk/test-db/issues>