Sha256: af903888247ee32d49fbd388ea0db5566f8fbf607901a98453de606099162eb8
Contents?: true
Size: 1.96 KB
Versions: 14
Compression:
Stored size: 1.96 KB
Contents
#encoding: utf-8
require File.join(File.dirname(__FILE__), "../../spec_helper")
include Nudge
describe CodeNthInstruction do
it_should_behave_like "every Nudge Instruction"
before(:each) do
@context = Interpreter.new
@i1 = CodeNthInstruction.new(@context)
end
describe "\#go" do
before(:each) do
@context = Interpreter.new
@i1 = CodeNthInstruction.new(@context)
end
describe "\#preconditions?" do
it "should need at least one item on the :int stack and :code stacks" do
@context.clear_stacks
lambda{@i1.preconditions?}.should raise_error
@context.stacks[:int].push(ValuePoint.new("int", 2))
@context.stacks[:code].push(ValuePoint.new("code", "block {ref a ref b ref c}"))
lambda{@i1.preconditions?}.should_not raise_error
end
end
describe "\#cleanup" do
before(:each) do
@context.stacks[:code].push(ValuePoint.new("code", "block {ref a ref b ref c}"))
end
it "should get the Nth item from the backbone of the top :code value" do
@context.stacks[:int].push(ValuePoint.new("int", 1))
@i1.go
@context.stacks[:code].peek.value.should == "ref b"
end
it "should use the top :int modulo the length of the backbone" do
@context.stacks[:int].push(ValuePoint.new("int", 11))
@i1.go
@context.stacks[:code].peek.value.should == "ref c"
end
it "should work for negative values too" do
@context.stacks[:int].push(ValuePoint.new("int", -8172))
@i1.go
@context.stacks[:code].peek.value.should == "ref a"
end
it "should return the top :code value itself if it's not a CodeblockPoint" do
@context.stacks[:code].push(ValuePoint.new("code", "do int_rob"))
@context.stacks[:int].push(ValuePoint.new("int", 21))
@i1.go
@context.stacks[:code].peek.value.should == "do int_rob"
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems