clearer organization for compiler tests

was slightly messy with small/large
now needed different test for expression and statements

test/compiler/expressions/test_basic.rb

@@ -0,0 +1,47 @@
+require_relative "compiler_helper"
+
+
+class TestBasic < MiniTest::Test
+  include CompilerHelper
+
+  def setup
+    @root = :basic_type
+    @output = Register::RegisterValue
+  end
+
+  def test_number
+    @string_input    = '42 '
+    check
+  end
+
+  def test_true
+    @string_input    = 'true'
+    check
+  end
+  def test_false
+    @string_input    = 'false '
+    check
+  end
+  def test_nil
+    @string_input    = 'nil '
+    check
+  end
+
+  def test_var
+    @string_input    = 'int foo '
+    @root = :field_def
+    @output = AST::Node
+    check
+  end
+
+  def test_self
+    @string_input    = 'self '
+    check
+  end
+
+  def test_string
+    @string_input    = "\"hello\""
+    check
+  end
+
+end