Sha256: 05768a888e9424dedc969959974262ea05e807b8446a866a3c2801dbaa143727
Contents?: true
Size: 1.78 KB
Versions: 8
Compression:
Stored size: 1.78 KB
Contents
require File.join(File.dirname(__FILE__), "../../spec_helper")
include Nudge
describe FloatSwapInstruction do
it_should_behave_like "every Nudge Instruction"
before(:each) do
@context = Interpreter.new
@i1 = FloatSwapInstruction.new(@context)
end
describe "\#go" do
before(:each) do
@i1 = FloatSwapInstruction.new(@context)
@float1 = ValuePoint.new("float", 1.234)
end
describe "\#preconditions?" do
it "should check that there are enough parameters" do
2.times {@context.stacks[:float].push(@float1)}
@i1.preconditions?.should == true
end
it "should raise an error if the preconditions aren't met" do
@context.clear_stacks # there are no params at all
lambda{@i1.preconditions?}.should raise_error(Instruction::NotEnoughStackItems)
end
it "should successfully run #go only if all preconditions are met" do
3.times {@context.stacks[:float].push(@float1)}
@i1.should_receive(:cleanup)
@i1.go
end
end
describe "\#derive" do
it "should pop all the arguments" do
2.times {@context.stacks[:float].push(@float1)}
@i1.stub!(:cleanup) # and do nothing
@i1.go
@context.stacks[:float].depth.should == 0
end
end
describe "\#cleanup" do
it "should swap the top two values" do
@context.push(:float,"1.234")
@context.push(:float,"2.468")
@i1.go
@context.pop_value(:float).should == 1.234
@context.pop_value(:float).should == 2.468
@context.push(:float,"4.321")
@context.push(:float,"3.21")
@i1.go
@context.pop_value(:float).should == 4.321
@context.pop_value(:float).should == 3.21
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems