Database Cleaner not working in minitest rails

Question

My Minitest controller tests are working fine if I run them alone using rake minitest:controllers but when I run rake minitest:all then I get valid

Answer 1

This is why I like Minitest; no fancy DSL to block thinking about how to use Ruby properly.

My setup is as follows:

In test_helper.rb

class MyTest < Minitest::Test
  def setup
    DatabaseCleaner.start
  end

  def teardown
    DatabaseCleaner.clean
  end
end

Then I just subclass this in any test that need database cleaning. Note the call super first cleans the db before any subclass-specific setup. The same call to super would need to be included in any subclass teardown method, but this can usually be omitted entirely.

class FooTest < MyTest
  def setup
    super
    @foo = Foo.new(bar: 'whatever')
  end

  def test_save
    @foo.save
    assert_equal 1, Foo.count
  end
end

If I need to subclass MyTest further (e.g. for integration tests) I include its own setup & teardown methods with calls to super so it goes right up the inheritance tree.