Notes posted to RSpec
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Examples
see have_at_least or have


Example using simple_matcher
This is extracted from: http://blog.davidchelimsky.net/2008/6/7/thoughts-on-the-dance-off
Here’s an example:
def be_sorted simple_matcher("a sorted list") {|actual| actual.sort == actual} end [1,2,3].should be_sorted
The block is handed the actual value. If the block returns true, the expectation passes. If it returns false, it fails with the following message:
expected “a sorted list” but got [1, 3, 2]
If you say [1,2,3].should_not be_sorted you’d get this message instead=:
expected not to get “a sorted list”, but got [1, 2, 3]
As of now, you don’t get any control over the failure message other than the string you pass to the simple_matcher method


Testing an options hash receives certain parameters
This method is very useful for testing methods that use the ruby idiom of accepting a hash with configurable options.
class Example def self.find(options = {}) ... end end
We can use hash_including to ensure that certain options are passed in when mocking it.
Example.should_receive(:find).with(hash_including(:conditions => 'some conditions')) Example.find(:conditions => 'some_conditions', :order => 1) # => Passes expectation Example.find(:order => 1) # => Fails expectation
This can also be used to great effect with the anything matcher. For example:
hash_including(:key => anything) hash_including(anything => 'value')