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require_relative '../../spec_helper'
require_relative '../enumerable/shared/enumeratorized'
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
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