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require 'rover'
require 'north'
require 'east'
require 'west'
require 'south'
describe Rover do
def create_sut(heading, x = 0, y = 0)
directions = {:north => North.new, :east => East.new, :west => West.new, :south => South.new}
Rover.new directions[heading],{ :x =>x,:y => y }
end
describe "when facing north" do
before do
@sut = create_sut :north, 0, 0
end
describe "when turning right" do
it "should face east" do
@sut.turn_right
@sut.heading.must_equal :east
end
end
describe "when turning left" do
it "should face west" do
@sut.turn_left
@sut.heading.must_equal :west
end
end
end
describe "when facing south" do
before do
@sut = create_sut :south, 0, 3
end
describe "when turning right" do
it "should face west" do
@sut.turn_right
@sut.heading.must_equal :west
end
end
describe "when turning left" do
it "should face east" do
@sut.turn_left
@sut.heading.must_equal :east
end
end
end
describe "when facing east" do
before do
@sut = create_sut :east
end
describe "when turning right" do
it "should face south" do
@sut.turn_right
@sut.heading.must_equal :south
end
end
describe "when turning left" do
it "should face north" do
@sut.turn_left
@sut.heading.must_equal :north
end
end
end
describe "when facing west" do
before do
@sut = create_sut :west, 1, 0
end
describe "when turning right" do
it "should face north" do
@sut.turn_right
@sut.heading.must_equal :north
end
end
describe "when turning left" do
it "should face south" do
@sut.turn_left
@sut.heading.must_equal :south
end
end
end
describe "when driving forward" do
it "should move forward along the terrain" do
@terrain.received(:move_forward).called_with(@sut.instance_variable_get(:@heading), @sut.location).wont_be_nil
end
before do
@terrain = fake
@sut = create_sut(:north)
@sut.move_forward(@terrain)
end
end
end
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