1 files changed, 23 insertions, 0 deletions
diff --git a/spec/ruby/library/ripper/lex_spec.rb b/spec/ruby/library/ripper/lex_spec.rb
new file mode 100644
index 0000000000..0255480579
--- /dev/null
+++ b/spec/ruby/library/ripper/lex_spec.rb
@@ -0,0 +1,23 @@
+require_relative '../../spec_helper'
+require 'ripper'
+
+describe "Ripper.lex" do
+  it "lexes a simple method declaration" do
+    expected = [
+        [[1, 0], :on_kw, "def", 'FNAME'],
+        [[1, 3], :on_sp, " ", 'FNAME'],
+        [[1, 4], :on_ident, "m", 'ENDFN'],
+        [[1, 5], :on_lparen, "(", 'BEG|LABEL'],
+        [[1, 6], :on_ident, "a", 'ARG'],
+        [[1, 7], :on_rparen, ")", 'ENDFN'],
+        [[1, 8], :on_semicolon, ";", 'BEG'],
+        [[1, 9], :on_kw, "nil", 'END'],
+        [[1, 12], :on_sp, " ", 'END'],
+        [[1, 13], :on_kw, "end", 'END']
+    ]
+    lexed = Ripper.lex("def m(a);nil end")
+    lexed.map { |e|
+      e[0...-1] + [e[-1].to_s]
+    }.should == expected
+  end
+end