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require 'test_helper'
describe Slop::Options do
before do
@options = Slop::Options.new
end
describe "#on" do
it "defaults to null type" do
assert_kind_of Slop::NullOption, @options.on("--foo")
end
it "accepts custom types" do
module Slop; class FooOption < Option; end; end
assert_kind_of Slop::FooOption, @options.on("--foo", type: :foo)
end
it "adds multiple flags" do
option = @options.on("-f", "-F", "--foo")
assert_equal %w(-f -F --foo), option.flags
end
it "accepts a trailing description" do
option = @options.on("--foo", "fooey")
assert_equal "fooey", option.desc
end
it "adds the option" do
option = @options.on("--foo")
assert_equal [option], @options.to_a
end
it "raises an error when a duplicate flag is used" do
@options.on("--foo")
assert_raises(ArgumentError) { @options.on("--foo") }
end
end
describe "#separator" do
it "appends separators between options in order" do
@options.separator("foo")
@options.on("--foo")
@options.separator("bar")
assert_equal ["foo", "bar"], @options.separators
end
it "appends strings to the last separator if no options exist" do
@options.separator("foo")
@options.separator("bar")
assert_equal ["foo\nbar"], @options.separators
end
it "includes separators in the help text" do
@options.on("--foo")
@options.separator("bar")
help = @options.to_s.squeeze(" ")
assert help.end_with?("--foo \nbar\n")
end
it "accepts a frozen argument, even when called multiple times for the same option" do
@options.separator("foo".freeze)
@options.separator("bar".freeze)
end
it "defaults to empty string" do
@options.separator
assert_equal [""], @options.separators
end
it "correctly handles options with `help: false`" do
@options.boolean "--opt1"
@options.boolean "--opt2", help: false
@options.separator "other options"
@options.boolean "--opt3", help: false
@options.boolean "--opt4"
_usage, help = @options.to_s.squeeze(" ").split("\n", 2)
assert_equal "--opt1 \nother options\n --opt4", help.strip
end
end
describe "#method_missing" do
it "uses the method name as an option type" do
option = @options.string("--name")
assert_kind_of Slop::StringOption, option
end
it "raises if a type doesn't exist" do
assert_raises(NoMethodError) { @options.unknown }
end
end
describe "#respond_to?" do
it "handles custom types" do
module Slop; class BarOption < Option; end; end
assert @options.respond_to?(:bar)
end
end
describe "#to_s" do
it "is prefixed with the default banner" do
assert_match(/^usage/, @options.to_s)
end
it "aligns option strings" do
@options.on "-f", "--foo", "fooey"
@options.on "-s", "short"
assert_match(/^ -f, --foo fooey/, @options.to_s)
assert_match(/^ -s short/, @options.to_s)
end
it "can use a custom prefix" do
@options.on "-f", "--foo"
assert_match(/^ -f, --foo/, @options.to_s(prefix: " "))
end
it "ignores options with help: false" do
@options.on "-x", "something", help: false
refute_match(/something/, @options.to_s)
end
it "adds 'tail' options to the bottom of the help text" do
@options.on "-h", "--help", tail: true
@options.on "-f", "--foo"
assert_match(/^ -h, --help/, @options.to_s.lines.last)
end
end
describe "custom banner" do
it "is prefixed with defined banner" do
@options_config = Slop::Options.new(**{banner: "custom banner"})
assert_match(/^custom banner/, @options_config.to_s)
end
it "banner is disabled" do
@options_config = Slop::Options.new(**{banner: false})
assert_match("", @options_config.to_s)
end
end
end
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