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".

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