rspec users - Jan 2012 - What is the pattern for testing a time argument using argument matcher

Say I do:

```ruby
object.method 5.days.ago
```

In the test I want to test using should_receive like:

```ruby
object.should_receive(:method).with(5.days.ago)
```

This will fail since two time objects aren''t exact the same.

What is the general pattern for testing this in rspec?

Thanks

You can use things like Timecop.

I prefer to just stub Time.now:

timestamp = Time.now.to_i
Time.stub(:now).returns(Time.at(timestamp))



Best regards
Morten M?ller Riis



On Jan 26, 2012, at 4:44 PM, Yi Wen wrote:
> Say I do:
> 
> ```ruby
> object.method 5.days.ago
> ```
> 
> In the test I want to test using should_receive like:
> 
> ```ruby
> object.should_receive(:method).with(5.days.ago)
> ```
> 
> This will fail since two time objects aren''t exact the same.
> 
> What is the general pattern for testing this in rspec?
> 
> Thanks
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
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On Jan 26, 2012, at 8:44 AM, Yi Wen wrote:
> Say I do:
> 
> ```ruby
> object.method 5.days.ago
> ```
> 
> In the test I want to test using should_receive like:
> 
> ```ruby
> object.should_receive(:method).with(5.days.ago)
> ```
> 
> This will fail since two time objects aren''t exact the same.
> 
> What is the general pattern for testing this in rspec?
> 
> Thanks
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
In general, it''s a good idea not to "hard code" time within
the code that uses it. There are many ways to avoid doing this:

1.) Pass in the time.

def method_that_uses_time(time)
  do_something_with_time(time)
end

it ''...'' do
  time = double(''time'')
  object.should_receive(:do_something_with_time).with(time)
  object.method_that_uses_time(time)
end

2.) Put the time in it''s own method, and stub it.

def method_that_uses_time
  do_something_with_time(the_time)
end

def the_time; 5.days.ago end

it ''...'' do
  time = double(''time'')
  object.should_receive(:the_time).and_return(time)
  object.method_that_uses_time
end

And then there are gems like delorean and timecop, which "freeze"
time.