Demonstrates unexpected behavior from .any_instance

rspec_any_instance_test.rb

require 'rspec/mocks'

describe Object do

  it "should play nicely with dup" do
    Object.any_instance.stub(:some_method)
    o = Object.new
    o.some_method
    o.dup.some_method
  end

  it "should not care how many times a stubbed method is called" do
    Object.any_instance.stub(:some_method)
    Object.new.some_method
    Object.new.some_method
  end

  it "should not care if same instance receives multiple calls" do
    Object.any_instance.stub(:some_method)
    o = Object.new
    o.some_method
    o.some_method
  end

  it "should explicitly not care how many times a stubbed method is called" do
    Object.any_instance.stub(:some_method).any_number_of_times
    Object.new.some_method
    pending "doesn't allow second method call" do
      Object.new.some_method
    end
  end

  it "should allow a method to be called any number of times, at least once" do
    Object.any_instance.should_receive(:some_method).at_least(:once)
    Object.new.some_method
    pending "doesn't allow second method call" do
      Object.new.some_method
    end
  end

  it "should allow a method to be called twice" do
    Object.any_instance.should_receive(:some_method).at_least(2).times
    Object.new.some_method
    pending "doesn't allow second method call" do
      Object.new.some_method
    end
  end

end

[master] {1.9.3-p125} gist-2210001 rspec rspec_any_instance_test.rb
FFF

Failures:

1. Object should not care how many times a stubbed method is called
   Failure/Error: Object.any_instance.stub(:some_method).any_number_of_times
   NoMethodError:
   undefined method `include?' for nil:NilClass

   ./rspec_any_instance_test.rb:6:in`block (2 levels) in <top (required)>'

2. Object should allow a method to be called any number of times, at least once
   Failure/Error: Object.new.some_method
   The message 'some_method' was received by #Object:0x007fee94261be8 but has already been received by #Object:0x007fee94267d40

   ./rspec_any_instance_test.rb:14:in `block (2 levels) in <top (required)>'

3. Object should allow a method to be called twice
   Failure/Error: Object.new.some_method
   The message 'some_method' was received by #Object:0x007fee9424b078 but has already been received by #Object:0x007fee9425d9a8

   ./rspec_any_instance_test.rb:20:in `block (2 levels) in <top (required)>'

Finished in 0.00154 seconds
3 examples, 3 failures

Failed examples:

rspec ./rspec_any_instance_test.rb:5 # Object should not care how many times a stubbed method is called
rspec ./rspec_any_instance_test.rb:11 # Object should allow a method to be called any number of times, at least once
rspec ./rspec_any_instance_test.rb:17 # Object should allow a method to be called twice

I am having these problems right now with rspec 2.10. Are there any open bugs for these issues?

I just ran into this. I didn't dig in far but it seems stub doesn't allow setting up expectations on the number of times a method is called. should_receive however does.

open bug is rspec/rspec-mocks#119