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require_relative '../../spec_helper'
describe "ENV.rassoc" do
before :each do
@foo = ENV["foo"]
@baz = ENV["baz"]
end
after :each do
ENV["foo"] = @foo
ENV["baz"] = @baz
end
it "returns an array of the key and value of the environment variable with the given value" do
ENV["foo"] = "bar"
ENV.rassoc("bar").should == ["foo", "bar"]
end
it "returns a single array even if there are multiple such environment variables" do
ENV["foo"] = "bar"
ENV["baz"] = "bar"
[
["foo", "bar"],
["baz", "bar"],
].should include(ENV.rassoc("bar"))
end
it "returns nil if no environment variable with the given value exists" do
ENV.rassoc("bar").should == nil
end
it "returns the value element coerced with #to_str" do
ENV["foo"] = "bar"
v = mock('value')
v.should_receive(:to_str).and_return("bar")
ENV.rassoc(v).should == ["foo", "bar"]
end
it "returns nil if the argument is not a String and does not respond to #to_str" do
ENV.rassoc(Object.new).should == nil
end
end
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