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#!/usr/bin/env rspec
# frozen_string_literal: true
require_relative "spec_helper"
require "dbus"
class ObjectTest < DBus::Object
T = DBus::Type unless const_defined? "T"
dbus_interface "org.ruby.ServerTest" do
dbus_attr_writer :write_me, T::Struct[String, String]
attr_accessor :read_only_for_dbus
dbus_reader :read_only_for_dbus, T::STRING, emits_changed_signal: :invalidates
end
end
describe DBus::Object do
describe ".dbus_attr_writer" do
describe "the declared assignment method" do
# Slightly advanced RSpec:
# https://rspec.info/documentation/3.9/rspec-expectations/RSpec/Matchers.html#satisfy-instance_method
let(:a_struct_in_a_variant) do
satisfying { |x| x.is_a?(DBus::Data::Variant) && x.member_type.to_s == "(ss)" }
# ^ This formatting keeps the matcher on a single line
# which enables RSpec to cite it if it fails, instead of saying "block".
end
it "emits PropertyChanged with correctly typed argument" do
obj = ObjectTest.new("/test")
expect(obj).to receive(:PropertiesChanged).with(
"org.ruby.ServerTest",
{
"WriteMe" => a_struct_in_a_variant
},
[]
)
# bug: call PC with simply the assigned value,
# which will need type guessing
obj.write_me = ["two", "strings"]
end
end
end
describe ".dbus_accessor" do
it "can only be used within a dbus_interface" do
expect do
ObjectTest.instance_exec do
dbus_accessor :foo, DBus::Type::STRING
end
end.to raise_error(DBus::Object::UndefinedInterface)
end
end
describe ".dbus_reader" do
it "can only be used within a dbus_interface" do
expect do
ObjectTest.instance_exec do
dbus_reader :foo, DBus::Type::STRING
end
end.to raise_error(DBus::Object::UndefinedInterface)
end
it "fails when the signature is invalid" do
expect do
ObjectTest.instance_exec do
dbus_interface "org.ruby.ServerTest" do
dbus_reader :foo2, "!"
end
end
end.to raise_error(DBus::Type::SignatureException)
end
end
describe ".dbus_reader, when paired with attr_accessor" do
describe "the declared assignment method" do
it "emits PropertyChanged" do
obj = ObjectTest.new("/test")
expect(obj).to receive(:PropertiesChanged).with(
"org.ruby.ServerTest",
{},
["ReadOnlyForDbus"]
)
obj.read_only_for_dbus = "myvalue"
end
end
end
describe ".dbus_writer" do
it "can only be used within a dbus_interface" do
expect do
ObjectTest.instance_exec do
dbus_writer :foo, DBus::Type::STRING
end
end.to raise_error(DBus::Object::UndefinedInterface)
end
end
describe ".dbus_watcher" do
it "can only be used within a dbus_interface" do
expect do
ObjectTest.instance_exec do
dbus_watcher :foo
end
end.to raise_error(DBus::Object::UndefinedInterface)
end
end
describe ".dbus_method" do
it "can only be used within a dbus_interface" do
expect do
ObjectTest.instance_exec do
dbus_method :foo do
end
end
end.to raise_error(DBus::Object::UndefinedInterface)
end
end
describe ".dbus_signal" do
it "can only be used within a dbus_interface" do
expect do
ObjectTest.instance_exec do
dbus_signal :signal_without_interface
end
end.to raise_error(DBus::Object::UndefinedInterface)
end
it "cannot be named with a bang" do
expect do
ObjectTest.instance_exec do
dbus_interface "org.ruby.ServerTest" do
# a valid Ruby symbol but an invalid DBus name; Ticket#38
dbus_signal :signal_with_a_bang!
end
end
end.to raise_error(DBus::InvalidMethodName)
end
end
describe ".emits_changed_signal" do
it "raises UndefinedInterface when so" do
expect { ObjectTest.emits_changed_signal = false }
.to raise_error DBus::Object::UndefinedInterface
end
it "assigns to the current interface" do
ObjectTest.instance_exec do
dbus_interface "org.ruby.Interface" do
self.emits_changed_signal = false
end
end
ecs = ObjectTest.intfs["org.ruby.Interface"].emits_changed_signal
expect(ecs).to eq false
end
it "only can be assigned once" do
expect do
Class.new(DBus::Object) do
dbus_interface "org.ruby.Interface" do
self.emits_changed_signal = false
self.emits_changed_signal = :invalidates
end
end
end.to raise_error(RuntimeError, /assigned more than once/)
end
end
# coverage obsession
describe "#dispatch" do
it "survives being called with a non-METHOD_CALL, doing nothing" do
obj = ObjectTest.new("/test")
msg = DBus::MethodReturnMessage.new
expect { obj.dispatch(msg) }.to_not raise_error
end
end
describe "#emit" do
context "before the object has been exported" do
it "raises an explanatory error" do
obj = ObjectTest.new("/test")
intf = DBus::Interface.new("org.example.Test")
signal = DBus::Signal.new("Ring")
expect { obj.emit(intf, signal) }
.to raise_error(
RuntimeError,
%r{Cannot emit signal org.example.Test.Ring before /test is exported}
)
end
end
end
end
|
