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# -*- coding: utf-8 -*-
shared_examples_for "things that declare options" do
it "should support options without arguments" do
subject = add_options_to { option "--bar" }
subject.should be_option :bar
end
it "should support options with an empty block" do
subject = add_options_to do
option "--foo" do
# this section deliberately left blank
end
end
subject.should be
subject.should be_option :foo
end
it "should support option documentation" do
text = "Sturm und Drang (German pronunciation: [ˈʃtʊʁm ʊnt ˈdʁaŋ]) …"
subject = add_options_to do
option "--foo" do
desc text
end
end
subject.get_option(:foo).desc.should == text
end
it "should list all the options" do
subject = add_options_to do
option "--foo"
option "--bar"
end
subject.options.should =~ [:foo, :bar]
end
it "should detect conflicts in long options" do
expect {
add_options_to do
option "--foo"
option "--foo"
end
}.should raise_error ArgumentError, /Option foo conflicts with existing option foo/i
end
it "should detect conflicts in short options" do
expect {
add_options_to do
option "-f"
option "-f"
end
}.should raise_error ArgumentError, /Option f conflicts with existing option f/
end
["-f", "--foo"].each do |option|
["", " FOO", "=FOO", " [FOO]", "=[FOO]"].each do |argument|
input = option + argument
it "should detect conflicts within a single option like #{input.inspect}" do
expect {
add_options_to do
option input, input
end
}.should raise_error ArgumentError, /duplicates existing alias/
end
end
end
# Verify the range of interesting conflicts to check for ordering causing
# the behaviour to change, or anything exciting like that.
[ %w{--foo}, %w{-f}, %w{-f --foo}, %w{--baz -f},
%w{-f --baz}, %w{-b --foo}, %w{--foo -b}
].each do |conflict|
base = %w{--foo -f}
it "should detect conflicts between #{base.inspect} and #{conflict.inspect}" do
expect {
add_options_to do
option *base
option *conflict
end
}.should raise_error ArgumentError, /conflicts with existing option/
end
end
it "should fail if we are not consistent about taking an argument" do
expect { add_options_to do option "--foo=bar", "--bar" end }.
should raise_error ArgumentError, /inconsistent about taking an argument/
end
it "should accept optional arguments" do
subject = add_options_to do option "--foo=[baz]", "--bar=[baz]" end
[:foo, :bar].each do |name|
subject.should be_option name
end
end
describe "#takes_argument?" do
it "should detect an argument being absent" do
subject = add_options_to do option "--foo" end
subject.get_option(:foo).should_not be_takes_argument
end
["=FOO", " FOO", "=[FOO]", " [FOO]"].each do |input|
it "should detect an argument given #{input.inspect}" do
subject = add_options_to do option "--foo#{input}" end
subject.get_option(:foo).should be_takes_argument
end
end
end
describe "#optional_argument?" do
it "should be false if no argument is present" do
option = add_options_to do option "--foo" end.get_option(:foo)
option.should_not be_takes_argument
option.should_not be_optional_argument
end
["=FOO", " FOO"].each do |input|
it "should be false if the argument is mandatory (like #{input.inspect})" do
option = add_options_to do option "--foo#{input}" end.get_option(:foo)
option.should be_takes_argument
option.should_not be_optional_argument
end
end
["=[FOO]", " [FOO]"].each do |input|
it "should be true if the argument is optional (like #{input.inspect})" do
option = add_options_to do option "--foo#{input}" end.get_option(:foo)
option.should be_takes_argument
option.should be_optional_argument
end
end
end
end
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