ruby/spec/rubyspec/core/env/delete_spec.rb
eregon 95e8c48dd3 Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-07 12:04:49 +00:00

24 lines
591 B
Ruby

require File.expand_path('../../../spec_helper', __FILE__)
describe "ENV.delete" do
after :each do
ENV.delete("foo")
end
it "removes the variable from the environment" do
ENV["foo"] = "bar"
ENV.delete("foo")
ENV["foo"].should == nil
end
it "returns the previous value" do
ENV["foo"] = "bar"
ENV.delete("foo").should == "bar"
end
it "yields the name to the given block if the named environment variable does not exist" do
ENV.delete("foo")
ENV.delete("foo") { |name| ScratchPad.record name }
ScratchPad.recorded.should == "foo"
end
end