Sha256: 63fb00e9f63f57860961f4a92147e1eb9c4e4f9e26dd32d456a913cfd38ffcfe
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Contents
module BreakSpecs
class Driver
def initialize(ensures=false)
@ensures = ensures
end
def note(value)
ScratchPad << value
end
end
class Block < Driver
def break_nil
note :a
note yielding {
note :b
break
note :c
}
note :d
end
def break_value
note :a
note yielding {
note :b
break :break
note :c
}
note :d
end
def yielding
note :aa
note yield
note :bb
end
end
end
describe "The break statement in a block" do
before :each do
ScratchPad.record []
@program = BreakSpecs::Block.new
end
it "returns nil to method invoking the method yielding to the block when not passed an argument" do
@program.break_nil
ScratchPad.recorded.should == [:a, :aa, :b, nil, :d]
end
it "returns a value to the method invoking the method yielding to the block" do
@program.break_value
ScratchPad.recorded.should == [:a, :aa, :b, :break, :d]
end
end
describe "Break inside a while loop" do
describe "with a value" do
it "exists the loop and returns the value" do
a = while true; break; end; a.should == nil
a = while true; break nil; end; a.should == nil
a = while true; break 1; end; a.should == 1
a = while true; break []; end; a.should == []
a = while true; break [1]; end; a.should == [1]
end
end
it "stops a while loop when run" do
i = 0
while true
break if i == 2
i+=1
end
i.should == 2
end
it "causes a call with a block to return when run" do
at = 0
0.upto(5) do |i|
at = i
break i if i == 2
end.should == 2
at.should == 2
end
end
Version data entries
23 entries across 23 versions & 1 rubygems