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# frozen_string_literal: true
require "mime/types"
require "minitest_helper"
describe MIME::Types, "lazy loading" do
def setup
ENV["RUBY_MIME_TYPES_LAZY_LOAD"] = "true"
end
def teardown
reset_mime_types
ENV.delete("RUBY_MIME_TYPES_LAZY_LOAD")
end
def reset_mime_types
MIME::Types.instance_variable_set(:@__types__, nil)
MIME::Types.send(:load_default_mime_types)
end
describe ".lazy_load?" do
it "is true when RUBY_MIME_TYPES_LAZY_LOAD is set" do
assert_output "", /RUBY_MIME_TYPES_LAZY_LOAD/ do
assert_equal true, MIME::Types.send(:lazy_load?)
end
end
it "is nil when RUBY_MIME_TYPES_LAZY_LOAD is unset" do
ENV["RUBY_MIME_TYPES_LAZY_LOAD"] = nil
assert_output "", "" do
assert_nil MIME::Types.send(:lazy_load?)
end
end
it "is false when RUBY_MIME_TYPES_LAZY_LOAD is false" do
ENV["RUBY_MIME_TYPES_LAZY_LOAD"] = "false"
assert_output "", /RUBY_MIME_TYPES_LAZY_LOAD/ do
assert_equal false, MIME::Types.send(:lazy_load?)
end
end
end
it "loads lazily when RUBY_MIME_TYPES_LAZY_LOAD is set" do
MIME::Types.instance_variable_set(:@__types__, nil)
assert_nil MIME::Types.instance_variable_get(:@__types__)
refute_nil MIME::Types["text/html"].first
refute_nil MIME::Types.instance_variable_get(:@__types__)
end
end
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