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describe :proc_compose, shared: true do
ruby_version_is "2.6"..."2.7" do
it "raises NoMethodError when called if passed not callable object" do
not_callable = Object.new
composed = @object.call.send(@method, not_callable)
-> {
composed.call('a')
}.should raise_error(NoMethodError, /undefined method `call' for/)
end
it "when called does not try to coerce argument with #to_proc" do
succ = Object.new
def succ.to_proc(s); s.succ; end
composed = @object.call.send(@method, succ)
-> {
composed.call('a')
}.should raise_error(NoMethodError, /undefined method `call' for/)
end
end
ruby_version_is "2.7" do # https://bugs.ruby-lang.org/issues/15428
it "raises TypeError if passed not callable object" do
lhs = @object.call
not_callable = Object.new
-> {
lhs.send(@method, not_callable)
}.should raise_error(TypeError, "callable object is expected")
end
it "does not try to coerce argument with #to_proc" do
lhs = @object.call
succ = Object.new
def succ.to_proc(s); s.succ; end
-> {
lhs.send(@method, succ)
}.should raise_error(TypeError, "callable object is expected")
end
end
end
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