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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Data#initialize" do
it "accepts positional arguments" do
data = DataSpecs::Measure.new(42, "km")
data.amount.should == 42
data.unit.should == "km"
end
it "accepts alternative positional arguments" do
data = DataSpecs::Measure[42, "km"]
data.amount.should == 42
data.unit.should == "km"
end
it "accepts keyword arguments" do
data = DataSpecs::Measure.new(amount: 42, unit: "km")
data.amount.should == 42
data.unit.should == "km"
end
it "accepts alternative keyword arguments" do
data = DataSpecs::Measure[amount: 42, unit: "km"]
data.amount.should == 42
data.unit.should == "km"
end
it "accepts String keyword arguments" do
data = DataSpecs::Measure.new("amount" => 42, "unit" => "km")
data.amount.should == 42
data.unit.should == "km"
end
it "raises ArgumentError if no arguments are given" do
-> {
DataSpecs::Measure.new
}.should raise_error(ArgumentError) { |e|
e.message.should.include?("missing keywords: :amount, :unit")
}
end
it "raises ArgumentError if at least one argument is missing" do
-> {
DataSpecs::Measure.new(unit: "km")
}.should raise_error(ArgumentError) { |e|
e.message.should.include?("missing keyword: :amount")
}
end
it "raises ArgumentError if unknown keyword is given" do
-> {
DataSpecs::Measure.new(amount: 42, unit: "km", system: "metric")
}.should raise_error(ArgumentError) { |e|
e.message.should.include?("unknown keyword: :system")
}
end
it "supports super from a subclass" do
ms = DataSpecs::MeasureSubclass.new(amount: 1, unit: "km")
ms.amount.should == 1
ms.unit.should == "km"
end
it "supports Data with no fields" do
-> { DataSpecs::Empty.new }.should_not raise_error
end
it "can be overridden" do
ScratchPad.record []
measure_class = Data.define(:amount, :unit) do
def initialize(*, **)
super
ScratchPad << :initialize
end
end
measure_class.new(42, "m")
ScratchPad.recorded.should == [:initialize]
end
context "when it is overridden" do
it "is called with keyword arguments when given positional arguments" do
ScratchPad.clear
DataSpecs::DataWithOverriddenInitialize.new(42, "m")
ScratchPad.recorded.should == [:initialize, [], {amount: 42, unit: "m"}]
end
it "is called with keyword arguments when given keyword arguments" do
ScratchPad.clear
DataSpecs::DataWithOverriddenInitialize.new(amount: 42, unit: "m")
ScratchPad.recorded.should == [:initialize, [], {amount: 42, unit: "m"}]
end
it "is called with keyword arguments when given alternative positional arguments" do
ScratchPad.clear
DataSpecs::DataWithOverriddenInitialize[42, "m"]
ScratchPad.recorded.should == [:initialize, [], {amount: 42, unit: "m"}]
end
it "is called with keyword arguments when given alternative keyword arguments" do
ScratchPad.clear
DataSpecs::DataWithOverriddenInitialize[amount: 42, unit: "m"]
ScratchPad.recorded.should == [:initialize, [], {amount: 42, unit: "m"}]
end
# See https://github.com/ruby/psych/pull/765
it "can be deserialized by calling Data.instance_method(:initialize)" do
d1 = DataSpecs::Area.new(width: 2, height: 3)
d1.area.should == 6
d2 = DataSpecs::Area.allocate
Data.instance_method(:initialize).bind_call(d2, **d1.to_h)
d2.should == d1
end
end
end
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