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|
# frozen_string_literal: true
require "spec_helper"
describe Clamp::Parameter::Definition do
context "when regular" do
let(:parameter) do
described_class.new("COLOR", "hue of choice")
end
it "has a name" do
expect(parameter.name).to eq "COLOR"
end
it "has a description" do
expect(parameter.description).to eq "hue of choice"
end
it "is single-valued" do
expect(parameter).not_to be_multivalued
end
describe "#attribute_name" do
it "is derived from the name" do
expect(parameter.attribute_name).to eq "color"
end
it "can be overridden" do
parameter = described_class.new("COLOR", "hue of choice", attribute_name: "hue")
expect(parameter.attribute_name).to eq "hue"
end
end
describe "#consume" do
subject(:consume) { parameter.consume(arguments) }
context "with arguments" do
let(:arguments) { %w[a b c] }
it "returns one consumed argument" do
expect(consume).to eq ["a"]
end
describe "arguments after consume" do
before do
consume
end
it "has only non-consumed" do
expect(arguments).to eq %w[b c]
end
end
end
context "without arguments" do
let(:arguments) { [] }
it "raises an Argument error" do
expect { consume }.to raise_error(ArgumentError)
end
end
end
end
context "when optional (name in square brackets)" do
let(:parameter) do
described_class.new("[COLOR]", "hue of choice")
end
it "is single-valued" do
expect(parameter).not_to be_multivalued
end
describe "#attribute_name" do
it "omits the brackets" do
expect(parameter.attribute_name).to eq "color"
end
end
describe "#consume" do
subject(:consume) { parameter.consume(arguments) }
context "with arguments" do
let(:arguments) { %w[a b c] }
it "returns one consumed argument" do
expect(consume).to eq ["a"]
end
describe "arguments after consume" do
before do
consume
end
it "has only non-consumed" do
expect(arguments).to eq %w[b c]
end
end
end
context "without arguments" do
let(:arguments) { [] }
it "consumes nothing" do
expect(consume).to be_empty
end
end
end
end
context "when 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 eq "file_list"
end
end
describe "#append_method" do
it "is derived from the attribute_name" do
expect(parameter.append_method).to eq "append_to_file_list"
end
end
describe "#consume" do
subject(:consume) { parameter.consume(arguments) }
context "with arguments" do
let(:arguments) { %w[a b c] }
it "returns all the consumed arguments" do
expect(consume).to eq %w[a b c]
end
describe "arguments after consume" do
before do
consume
end
it "empty" do
expect(arguments).to be_empty
end
end
end
describe "without arguments" do
let(:arguments) { [] }
it "raises an Argument error" do
expect { consume }.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 eq "config_settings"
end
end
end
end
context "when 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 eq "files_list"
end
end
describe "#default_value" do
it "is an empty list" do
expect(parameter.default_value).to be_empty
end
end
describe "#help" do
it "does not include default" do
expect(parameter.help_rhs).not_to 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 eq %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
subject(:consume) { parameter.consume(arguments) }
context "with arguments" do
let(:arguments) { %w[a b c] }
it "returns all the consumed arguments" do
expect(consume).to eq %w[a b c]
end
describe "arguments after consume" do
before do
consume
end
it "empty" do
expect(arguments).to be_empty
end
end
end
context "without arguments" do
let(:arguments) { [] }
it "don't override defaults" do
expect(consume).to be_empty
end
end
end
end
end
end
|
