return test for risc

test/mom/test_return_simple.rb

@@ -0,0 +1,36 @@
+require_relative "helper"
+
+module Risc
+  class TestReturnSimple < MiniTest::Test
+    include Statements
+
+    def setup
+      super
+      @input = "return 5"
+      @expect = [LoadConstant, RegToSlot, SlotToReg, SlotToReg, RegToSlot, SlotToReg ,
+                 Transfer, SlotToReg, FunctionReturn]
+    end
+
+    def test_return_instructions
+      assert_nil msg = check_nil , msg
+    end
+    def test_function_return
+      produced = produce_body
+      assert_equal FunctionReturn , produced.next(8).class
+    end
+    def test_load_5
+      produced = produce_body
+      assert_equal 5 , produced.constant.value
+    end
+    def pest_cache_check
+      produced = produce_body
+      assert_equal NotSame , produced.next(3).class
+      assert_equal produced.next(34) , produced.next(3).label
+    end
+    def pest_check_resolve
+      produced = produce_body
+      assert_equal FunctionCall , produced.next(30).class
+      assert_equal :resolve_method ,produced.next(30).method.name
+    end
+  end
+end