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require File.expand_path('../../../spec_helper', __FILE__)
ruby_version_is "1.9" do
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_class)
end
end
end
describe "ENV.select" do
ruby_version_is ""..."1.9" do
it "returns an Array of names and value for which block returns true" do
ENV["foo"] = "bar"
ENV.select { |k, v| k == "foo" }.should == [["foo", "bar"]]
ENV.delete "foo"
end
end
ruby_version_is "1.9" 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
end
ruby_version_is "" ... "1.8.7" do
it "raises when no block is given" do
lambda { ENV.select }.should raise_error(LocalJumpError)
end
end
ruby_version_is "1.8.7" do
it "returns an Enumerator when no block is given" do
ENV.select.should be_an_instance_of(enumerator_class)
end
end
end
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