change test framework to use files for in and out (s-exp)

test/cases/compound/array_list.tst

@@ -0,0 +1,3 @@
+[42, foo]
+-- -- --
+s(:list,  [s(:array,  [s(:int,  42), s(:name,  "foo")])])

test/cases/compound/array_ops.tst

@@ -0,0 +1,8 @@
+[ 3 + 4 , foo(22) ]
+-- -- --
+s(:list,  [s(:array,  [s(:operator,  "+", 
+  s(:int,  3), 
+  s(:int,  4)), s(:call, 
+  s(:name,  "foo"), 
+  s(:arguments, 
+    s(:int,  22)))])])

test/cases/compound/hash.tst

@@ -0,0 +1,5 @@
+{ foo => 33 }
+-- -- --
+s(:list,  [s(:hash,  [s(:assoc, 
+  s(:name,  "foo"), 
+  s(:int,  33))])])

test/cases/compound/hash2.tst

@@ -0,0 +1,5 @@
+{ foo => true }
+-- -- --
+s(:list,  [s(:hash,  [s(:assoc, 
+  s(:name,  "foo"), 
+  s(:true))])])

test/cases/compound/hash_list.tst

@@ -0,0 +1,7 @@
+{foo => 33 , bar => 42}
+-- -- --
+s(:list,  [s(:hash,  [s(:assoc, 
+  s(:name,  "foo"), 
+  s(:int,  33)), s(:assoc, 
+  s(:name,  "bar"), 
+  s(:int,  42))])])

test/cases/compound/one_array.tst

@@ -0,0 +1,3 @@
+[42]
+-- -- --
+s(:list,  [s(:array,  [s(:int,  42)])])