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require_relative '../../spec_helper'
require_relative 'shared/include'
describe "ENV.key?" do
it_behaves_like :env_include, :key?
end
describe "ENV.key" do
before :each do
@saved_foo = ENV["foo"]
end
after :each do
ENV["foo"] = @saved_foo
end
it "returns the index associated with the passed value" do
ENV["foo"] = "bar"
ENV.key("bar").should == "foo"
end
it "returns nil if the passed value is not found" do
ENV.delete("foo")
ENV.key("foo").should be_nil
end
it "coerces the key element with #to_str" do
ENV["foo"] = "bar"
k = mock('key')
k.should_receive(:to_str).and_return("bar")
ENV.key(k).should == "foo"
end
it "raises TypeError if the argument is not a String and does not respond to #to_str" do
-> {
ENV.key(Object.new)
}.should raise_error(TypeError, "no implicit conversion of Object into String")
end
end
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