diff options
Diffstat (limited to 'spec/rubyspec/core/env/select_spec.rb')
-rw-r--r-- | spec/rubyspec/core/env/select_spec.rb | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/spec/rubyspec/core/env/select_spec.rb b/spec/rubyspec/core/env/select_spec.rb new file mode 100644 index 0000000000..8261ff593a --- /dev/null +++ b/spec/rubyspec/core/env/select_spec.rb @@ -0,0 +1,39 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../../enumerable/shared/enumeratorized', __FILE__) + +describe "ENV.select!" do + it "removes environment variables for which the block returns true" do + ENV["foo"] = "bar" + ENV.select! { |k, v| k != "foo" } + ENV["foo"].should == nil + end + + it "returns self if any changes were made" do + ENV["foo"] = "bar" + ENV.select! { |k, v| k != "foo" }.should == ENV + end + + it "returns nil if no changes were made" do + ENV.select! { true }.should == nil + end + + it "returns an Enumerator if called without a block" do + ENV.select!.should be_an_instance_of(Enumerator) + end + + it_behaves_like :enumeratorized_with_origin_size, :select!, ENV +end + +describe "ENV.select" do + it "returns a Hash of names and values for which block return true" do + ENV["foo"] = "bar" + ENV.select { |k, v| k == "foo" }.should == {"foo" => "bar"} + ENV.delete "foo" + end + + it "returns an Enumerator when no block is given" do + ENV.select.should be_an_instance_of(Enumerator) + end + + it_behaves_like :enumeratorized_with_origin_size, :select, ENV +end |