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Revert "Tests now require MySQL2 adapter in order to run"

Reason: Setting up MySQL and Postgres needs installing servers
and libraries that perhaps you don't need in your machine. We
think fixing a bug in Active Support without running the suite
of Active Record for all possible drivers is OK. That's why
we explain first --without db, and after that we cover AR
specifically. mysql2 is no different than mysql or pg in that

This reverts commit 50d5e0f.
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1 parent ee5cfdf commit 3665ffda8352af841b17565eb59d20da5edb2147 @fxn fxn committed Jul 24, 2011
Showing with 11 additions and 2 deletions.
  1. +11 −2 railties/guides/source/contributing_to_ruby_on_rails.textile
@@ -81,10 +81,10 @@ $ gem install bundler
and run:
-$ bundle install
+$ bundle install --without db
-This command will install all dependencies. With dependencies installed, you can run the test suite with:
+This command will install all dependencies except the MySQL and PostgreSQL Ruby drivers. We will come back at these soon. With dependencies installed, you can run the test suite with:
$ rake test
@@ -139,6 +139,15 @@ $ sudo apt-get install mysql-server libmysqlclient15-dev
$ sudo apt-get install postgresql postgresql-client postgresql-contrib libpq-dev
+After that run:
+$ rm .bundle/config
+$ bundle install
+We need first to delete +.bundle/config+ because Bundler remembers in that file that we didn't want to install the "db" group (alternatively you can edit the file).
In order to be able to run the test suite against MySQL you need to create a user named +rails+ with privileges on the test databases:

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