test/unit/test_slot.rb in slot_machine-0.1.0 vs test/unit/test_slot.rb in slot_machine-0.1.1

@@ -12,10 +12,15 @@
           assert_equal 10, Slot.default_interval
           Slot.class_eval do
             interval 20
           end
           assert_equal 20, Slot.default_interval
+
+          Slot.class_eval do
+            interval 10
+          end
+          assert_equal 10, Slot.default_interval
         end
       end
 
       describe "instance methods" do
         it "should have the expected instance methods" do
@@ -26,12 +31,14 @@
           assert slot.respond_to?(:start=)
           assert slot.respond_to?(:end)
           assert slot.respond_to?(:end=)
           assert slot.respond_to?(:length)
           assert slot.respond_to?(:length=)
-          assert slot.respond_to?(:to_compared)
+          assert slot.respond_to?(:to_compared, true)
           assert slot.respond_to?(:match)
+          assert slot.respond_to?(:+)
+          assert slot.respond_to?(:-)
         end
       end
 
       describe "initialization" do
         it "should accept a range" do
@@ -73,11 +80,11 @@
           assert slot.length?
         end
       end
 
       describe "equality" do
-        it "should return whether it equals another objects" do
+        it "should return whether it equals another object" do
           slot = Slot.new 1
 
           assert !(slot == 1)
           assert !(slot == Slot.new(1..2))
           assert_equal slot, Slot.new(1)
@@ -188,10 +195,24 @@
           end
           assert_raises ArgumentError do
             Slot.new(5).match(5)
           end
         end
+
+        it "should be able to add other slots" do
+          assert_equal Slots, (Slot.new(1..10) + (5..8)).class
+          assert_equal Slots, (Slot.new(1..10) + Slot.new(5..8)).class
+          assert_equal Slots, (Slot.new(1..10) + [5..8]).class
+          assert_equal Slots, (Slot.new(1..10) + Slots.new([5..8])).class
+        end
+
+        it "should be able to subtract other slots" do
+          assert_equal Slots, (Slot.new(1..10) - (5..8)).class
+          assert_equal Slots, (Slot.new(1..10) - Slot.new(5..8)).class
+          assert_equal Slots, (Slot.new(1..10) - [5..8]).class
+          assert_equal Slots, (Slot.new(1..10) - Slots.new([5..8])).class
+        end
       end
 
       describe "length slots" do
         it "should only set length (not start or end) and typecast the passed argument" do
           slot = Slot.new 10
@@ -231,7 +252,8 @@
         it "should represent itself as an integer when invoking to_compared" do
           assert_equal 10, Slot.new(10).send(:to_compared)
         end
       end
     end
+
   end
 end
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