63 lines
1.7 KiB
Ruby
63 lines
1.7 KiB
Ruby
require_relative '../../spec_helper'
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require_relative '../../shared/hash/key_error'
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describe "ENV.fetch" do
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before :each do
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@foo_saved = ENV.delete("foo")
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end
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after :each do
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ENV["foo"] = @saved_foo
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end
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it "returns a value" do
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ENV["foo"] = "bar"
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ENV.fetch("foo").should == "bar"
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end
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it "raises a TypeError if the key is not a String" do
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-> { ENV.fetch Object.new }.should raise_error(TypeError, "no implicit conversion of Object into String")
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end
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context "when the key is not found" do
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it_behaves_like :key_error, -> obj, key { obj.fetch(key) }, ENV
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it "formats the object with #inspect in the KeyError message" do
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-> {
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ENV.fetch('foo')
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}.should raise_error(KeyError, 'key not found: "foo"')
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end
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end
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it "provides the given default parameter" do
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ENV.fetch("foo", "default").should == "default"
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end
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it "does not insist that the default be a String" do
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ENV.fetch("foo", :default).should == :default
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end
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it "provides a default value from a block" do
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ENV.fetch("foo") { |k| "wanted #{k}" }.should == "wanted foo"
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end
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it "does not insist that the block return a String" do
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ENV.fetch("foo") { |k| k.to_sym }.should == :foo
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end
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it "warns on block and default parameter given" do
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-> do
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ENV.fetch("foo", "default") { "bar" }.should == "bar"
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end.should complain(/block supersedes default value argument/)
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end
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it "does not evaluate the block when key found" do
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ENV["foo"] = "bar"
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ENV.fetch("foo") { fail "should not get here"}.should == "bar"
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end
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it "uses the locale encoding" do
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ENV["foo"] = "bar"
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ENV.fetch("foo").encoding.should == Encoding.find('locale')
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end
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end
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