Validate_presence_of unit testing with if condition

Rails
1

In the layer.rb model, I have

validates_presence_of :data_source
validates_presence_of :url, :if => :other_dataset?

def other_dataset?
data_source == ‘other’
end

When I tried to do the unit testing,

def test_when_datasource_is_other
layer = Layer.new(:data_source =>‘other’, :url => nil)
assert !layer.valid?
assert layer.errors.invalid?(:url)
end

it keeps throw me an error:
NoMethodError: undefined method `data_source=’ for #Layer:0x311bce8

2

does your table have a column with the name ‘data_source’ ?
if this is only temporary data, you must define it with
attr_accessor :data_source

3

Thorsten M. wrote:

does your table have a column with the name ‘data_source’ ?
if this is only temporary data, you must define it with
attr_accessor :data_source

Yes, the layers table has a string type column named ‘data_source’

4

Ensure your test database is up to date schema-wise.

rake db:test:clone

If you recently did a migrate, that puts your test db out of sync.

I’ve got a plugin I’ll release soon that just makes db:migrate do the
db:test:clone step automatically (cos I always forget to do that when I
run
tests in textmate)