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Contents
##
# spec/lib/skn_utils/container_spec.rb
#
# @See SknRegistry also
class MyKlassService
def value
true
end
end
describe SknContainer, "IoC Lite Container Singleton." do
context "Operational Features. " do
it "#register accepts a proc object to produce unique instances. " do
val = subject.register(:service, -> {MyKlassService.new} )
expect( val ).to eq subject
end
it "#resolve returns new instances. " do
subject.register(:service, -> {MyKlassService.new} )
val_a = subject.resolve(:service)
val_b = subject.resolve(:service)
expect( val_a ).to be_instance_of MyKlassService
expect( val_a ).to_not be_equal val_b
end
it "#register accepts a class object and return self to enable chaining. " do
val = subject.register(:service_k, MyKlassService).register(:more, "More")
expect( val ).to eq subject
end
it "#resolve returns class value. " do
subject.register(:service_k, MyKlassService)
val = subject.resolve(:service_k)
expect( val ).to be_equal MyKlassService
expect( val.new.value ).to be true
end
it "#resolve returns the same object value. " do
thingy = MyKlassService.new
subject.register(:service_k, thingy)
val_a = subject.resolve(:service_k)
val_b = subject.resolve(:service_k)
expect( val_a ).to be_equal thingy
expect( val_a ).to be_equal val_b
end
it "#resolve returns nil when key is not found. " do
subject.register(:service_a, "AnyValue")
expect(subject.resolve(:no_find)).to be_nil
end
it "#resolve returns block without calling it first. " do
subject.register(:service_b, {call: false}) do |str|
str.upcase
end
expect( subject.resolve(:service_b).call("Hello") ).to eq "HELLO"
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems