adding and fixing test for empty strings

test/fixtures/execution/test_splices.coffee

@@ -1,3 +1,5 @@
+
+
 array: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
 
 array[5..10]: [0, 0, 0]

test/unit/test_lexer.rb

@@ -7,14 +7,14 @@ class LexerTest < Test::Unit::TestCase
   end
 
   def test_lexing_an_empty_string
-    assert @lex.tokenize("") == [["\n", "\n"]]
+    assert @lex.tokenize("") == []
   end
 
   def test_lexing_basic_assignment
     code = "a: 'one'\nb: [1, 2]"
-    assert @lex.tokenize(code) == [[:IDENTIFIER, "a"], [:ASSIGN, ":"], 
+    assert @lex.tokenize(code) == [[:IDENTIFIER, "a"], [:ASSIGN, ":"],
-      [:STRING, "'one'"], ["\n", "\n"], [:IDENTIFIER, "b"], [:ASSIGN, ":"], 
+      [:STRING, "'one'"], ["\n", "\n"], [:IDENTIFIER, "b"], [:ASSIGN, ":"],
-      ["[", "["], [:NUMBER, "1"], [",", ","], [:NUMBER, "2"], ["]", "]"], 
+      ["[", "["], [:NUMBER, "1"], [",", ","], [:NUMBER, "2"], ["]", "]"],
       ["\n", "\n"]]
   end
 
@@ -27,7 +27,7 @@ class LexerTest < Test::Unit::TestCase
   def test_lexing_function_definition
     code = "x, y => x * y"
     assert @lex.tokenize(code) == [[:PARAM, "x"], [",", ","], [:PARAM, "y"],
-      ["=>", "=>"], [:INDENT, 2], [:IDENTIFIER, "x"], ["*", "*"], 
+      ["=>", "=>"], [:INDENT, 2], [:IDENTIFIER, "x"], ["*", "*"],
       [:IDENTIFIER, "y"], [:OUTDENT, 2], ["\n", "\n"]]
   end