start testing that compile returns slot

test/compiler/test_all.rb

@@ -1,3 +1,4 @@
 require_relative "test_basic"
 require_relative "test_methods"
 require_relative "test_hello"
+require_relative "test_compiler"

test/compiler/test_compiler.rb

@@ -0,0 +1,29 @@
+require_relative "compiler_helper"
+
+
+class CompilerTest < MiniTest::Test
+  def setup
+    Virtual.machine.boot
+  end
+  def check
+    res = Virtual::Compiler.compile( @expression , Virtual.machine.space.get_main )
+    assert res.is_a?(Virtual::Slot) , "compiler must compile to slot, not #{res.class}"
+  end
+  def true_ex
+    Ast::TrueExpression.new
+  end
+  def name_ex
+    Ast::NameExpression.new("name#{rand(100)}")
+  end
+  def list
+     [true_ex]
+  end
+  def test_if_expression
+    @expression = Ast::IfExpression.new( true_ex , list , list)
+    check
+  end
+  def test_function_expression
+    @expression = Ast::FunctionExpression.new( "name", [] , [true_ex] ,nil)
+    check
+  end
+end

test/compiler/test_hello.rb

@@ -1,7 +1,6 @@
 require_relative "compiler_helper"
 
 class HelloTest < MiniTest::Test
-  include CompilerHelper
 
   def check
     machine = Virtual.machine.boot