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Versions: 14
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Stored size: 1.76 KB
Contents
require File.join(File.dirname(__FILE__), "../../spec_helper")
include Nudge
describe BoolAndInstruction do
it_should_behave_like "every Nudge Instruction"
before(:each) do
@context = Interpreter.new
@i1 = BoolAndInstruction.new(@context)
end
describe "\#go" do
before(:each) do
@i1 = BoolAndInstruction.new(@context)
@bool1 = ValuePoint.new("bool", false)
end
describe "\#preconditions?" do
it "should check that there are enough parameters" do
2.times {@context.stacks[:bool].push(@bool1)}
@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[:bool].push(@bool1)}
@i1.should_receive(:cleanup)
@i1.go
end
end
describe "\#derive" do
it "should pop all the arguments" do
2.times {@context.stacks[:bool].push(@bool1)}
@i1.stub!(:cleanup) # and do nothing
@i1.go
@context.stacks[:bool].depth.should == 0
end
end
describe "\#cleanup" do
describe "should push the result" do
{[true, true] => true, [true, false] => false, [false, false] => false}.each do |inputs, expected|
params = inputs.inspect
it "should produce #{expected} given #{params}" do
inputs.each {|i| @context.stacks[:bool].push(ValuePoint.new("bool", i))}
@i1.go
@context.stacks[:bool].peek.value.should == expected
end
end
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems