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require "spec_helper"
describe Clamp::Parameter::Definition do
context "normal" do
let(:parameter) do
described_class.new("COLOR", "hue of choice")
end
it "has a name" do
expect(parameter.name).to eql "COLOR"
end
it "has a description" do
expect(parameter.description).to eql "hue of choice"
end
it "is single-valued" do
expect(parameter).to_not be_multivalued
end
describe "#attribute_name" do
it "is derived from the name" do
expect(parameter.attribute_name).to eql "color"
end
it "can be overridden" do
parameter = described_class.new("COLOR", "hue of choice", :attribute_name => "hue")
expect(parameter.attribute_name).to eql "hue"
end
end
describe "#consume" do
it "consumes one argument" do
arguments = %w(a b c)
expect(parameter.consume(arguments)).to eql ["a"]
expect(arguments).to eql %w(b c)
end
describe "with no arguments" do
it "raises an Argument error" do
arguments = []
expect do
parameter.consume(arguments)
end.to raise_error(ArgumentError)
end
end
end
end
context "optional (name in square brackets)" do
let(:parameter) do
described_class.new("[COLOR]", "hue of choice")
end
it "is single-valued" do
expect(parameter).to_not be_multivalued
end
describe "#attribute_name" do
it "omits the brackets" do
expect(parameter.attribute_name).to eql "color"
end
end
describe "#consume" do
it "consumes one argument" do
arguments = %w(a b c)
expect(parameter.consume(arguments)).to eql ["a"]
expect(arguments).to eql %w(b c)
end
describe "with no arguments" do
it "consumes nothing" do
arguments = []
expect(parameter.consume(arguments)).to eql []
end
end
end
end
context "list (name followed by ellipsis)" do
let(:parameter) do
described_class.new("FILE ...", "files to process")
end
it "is multi-valued" do
expect(parameter).to be_multivalued
end
describe "#attribute_name" do
it "gets a _list suffix" do
expect(parameter.attribute_name).to eql "file_list"
end
end
describe "#append_method" do
it "is derived from the attribute_name" do
expect(parameter.append_method).to eql "append_to_file_list"
end
end
describe "#consume" do
it "consumes all the remaining arguments" do
arguments = %w(a b c)
expect(parameter.consume(arguments)).to eql %w(a b c)
expect(arguments).to eql []
end
describe "with no arguments" do
it "raises an Argument error" do
arguments = []
expect do
parameter.consume(arguments)
end.to raise_error(ArgumentError)
end
end
end
context "with a weird parameter name, and an explicit attribute_name" do
let(:parameter) do
described_class.new("KEY=VALUE ...", "config-settings", :attribute_name => :config_settings)
end
describe "#attribute_name" do
it "is the specified one" do
expect(parameter.attribute_name).to eql "config_settings"
end
end
end
end
context "optional list" do
let(:parameter) do
described_class.new("[FILES] ...", "files to process")
end
it "is multi-valued" do
expect(parameter).to be_multivalued
end
describe "#attribute_name" do
it "gets a _list suffix" do
expect(parameter.attribute_name).to eql "files_list"
end
end
describe "#default_value" do
it "is an empty list" do
expect(parameter.default_value).to eql []
end
end
describe "#help" do
it "does not include default" do
expect(parameter.help_rhs).to_not include("default:")
end
end
context "with specified default value" do
let(:parameter) do
described_class.new("[FILES] ...", "files to process", :default => %w(a b c))
end
describe "#default_value" do
it "is that specified" do
expect(parameter.default_value).to eql %w(a b c)
end
end
describe "#help" do
it "includes the default value" do
expect(parameter.help_rhs).to include("default:")
end
end
describe "#consume" do
it "consumes all the remaining arguments" do
arguments = %w(a b c)
expect(parameter.consume(arguments)).to eql %w(a b c)
expect(arguments).to eql []
end
context "with no arguments" do
it "don't override defaults" do
arguments = []
expect(parameter.consume(arguments)).to eql []
end
end
end
end
end
end
|
