diff --git a/.rvmrc b/.rvmrc
index 0698480..88f5835 100644
--- a/.rvmrc
+++ b/.rvmrc
@@ -1 +1 @@
-rvm use rbx-1.2.4@mutant --create
+rvm use rbx-head@mutant --create
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..7a33a06
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,6 @@
+rvm:
+  - rbx-18mode
+  - rbx-19mode
+
+bundler_args: "--binstubs"
+script: "bin/rspec spec"
diff --git a/lib/mutant/implementation.rb b/lib/mutant/implementation.rb
index 496719a..fe814da 100644
--- a/lib/mutant/implementation.rb
+++ b/lib/mutant/implementation.rb
@@ -41,7 +41,7 @@ def all_methods
 
     def all_singleton_methods
       constant.singleton_methods(false).delete_if {|meth_name|
-        meth_name == '__class_init__' }.map {|meth_name|
+        meth_name.to_s == '__class_init__' }.map {|meth_name|
           format_method(meth_name, SINGLETON_SCOPE)}
     end
 
@@ -64,7 +64,7 @@ def to_s
     private
 
     def format_method(meth_name, method_scope_type)
-      class_name + method_scope_type + meth_name
+      class_name + method_scope_type + meth_name.to_s
     end
   end
 end
diff --git a/lib/mutant/method.rb b/lib/mutant/method.rb
index 8eec374..add61de 100644
--- a/lib/mutant/method.rb
+++ b/lib/mutant/method.rb
@@ -11,8 +11,8 @@ def initialize(method)
       super(source_file, DEFAULT_LINE)
     end
 
+    # TODO: Check for edge cases where just the line won't work.
     def match?(ast)
-      source_name == ast.name &&
       source_line == ast.line
     end
   end
diff --git a/lib/mutant/mutatee.rb b/lib/mutant/mutatee.rb
index 690cb56..d44cc09 100644
--- a/lib/mutant/mutatee.rb
+++ b/lib/mutant/mutatee.rb
@@ -15,7 +15,7 @@ def initialize(implementation)
 
     def clean
       body.array.delete_if do |literal|
-        not Mutant::Literal.constants.include?(literal.class.basename)
+        not Mutant::Literal.constants.map(&:to_sym).include?(literal.class.basename.to_sym)
       end
     end
 
@@ -34,11 +34,12 @@ def mutations_remaining
     end
 
     def ast
-      @ast ||= rbx_method.parse_file && marshal(rbx_method.ast)
+      @ast ||= rbx_method.parse_file && rbx_method.ast
     end
 
     def body
       @body ||= rbx_method.is_a?(SingletonMethod) ? ast.body.body : ast.body
+
     end
 
     def rbx_method
diff --git a/lib/mutant/random.rb b/lib/mutant/random.rb
index 91c307e..547b709 100644
--- a/lib/mutant/random.rb
+++ b/lib/mutant/random.rb
@@ -1,6 +1,7 @@
 module Mutant
   class Random
     ALLOWED_SYMBOL_CHARACTERS = Array('a'..'z') + Array('A'..'Z')
+    RANDOM_METHOD = Rubinius.ruby19? ? :sample : :choice
 
     def self.string
       ENV.fetch('RANDOM_STRING') {
@@ -10,7 +11,7 @@ def self.string
 
     def self.symbol
       ENV.fetch('RANDOM_SYMBOL') {
-        Array.new(rand(50).next) { ALLOWED_SYMBOL_CHARACTERS.choice }.join
+        Array.new(rand(50).next) { ALLOWED_SYMBOL_CHARACTERS.send RANDOM_METHOD }.join
       }.to_sym
     end
 
diff --git a/spec/functional/class_spec.rb b/spec/functional/class_spec.rb
index 145901a..d267684 100644
--- a/spec/functional/class_spec.rb
+++ b/spec/functional/class_spec.rb
@@ -12,6 +12,7 @@ def alphabet_range; 'a'..'k' end
       end
     """
     write_file 'spec/thing_spec.rb', """
+      $: << '.'
       require 'thing'
 
       describe Thing do
diff --git a/spec/functional/instance_method/array_spec.rb b/spec/functional/instance_method/array_spec.rb
index a009d05..21a4387 100644
--- a/spec/functional/instance_method/array_spec.rb
+++ b/spec/functional/instance_method/array_spec.rb
@@ -16,6 +16,7 @@ def to_a
       context 'with an expectation that the array is [1,2,3]' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#to_a' do
@@ -33,6 +34,7 @@ def to_a
       context 'with an expectation that the array responds to length' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#to_a' do
diff --git a/spec/functional/instance_method/boolean_spec.rb b/spec/functional/instance_method/boolean_spec.rb
index e99eb3a..c39b499 100644
--- a/spec/functional/instance_method/boolean_spec.rb
+++ b/spec/functional/instance_method/boolean_spec.rb
@@ -16,6 +16,7 @@ def alive?
       context 'with an expectation that the return value is true' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#alive?' do
@@ -33,6 +34,7 @@ def alive?
       context 'with an expectation that the return value is true or false' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#alive?' do
@@ -62,6 +64,7 @@ def alive?
       context 'with an expectation that the return value is false' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.alive?' do
@@ -79,6 +82,7 @@ def alive?
       context 'with an expectation that the return value is true or false' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#alive?' do
diff --git a/spec/functional/instance_method/fixnum_spec.rb b/spec/functional/instance_method/fixnum_spec.rb
index 418f321..3d1afc9 100644
--- a/spec/functional/instance_method/fixnum_spec.rb
+++ b/spec/functional/instance_method/fixnum_spec.rb
@@ -16,6 +16,7 @@ def answer
       context 'with an expectation that the return value is 42' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life#answer' do
@@ -33,6 +34,7 @@ def answer
       context 'with an expectation that the return value is a Fixnum' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life#answer' do
diff --git a/spec/functional/instance_method/float_spec.rb b/spec/functional/instance_method/float_spec.rb
index 9045ce2..4001c1e 100644
--- a/spec/functional/instance_method/float_spec.rb
+++ b/spec/functional/instance_method/float_spec.rb
@@ -16,6 +16,7 @@ def answer
       context 'with an expectation that the return value is 42.5' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life#answer' do
@@ -33,6 +34,7 @@ def answer
       context 'with an expectation that the return value is a Float' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life#answer' do
diff --git a/spec/functional/instance_method/hash_spec.rb b/spec/functional/instance_method/hash_spec.rb
index e04ddfd..e30e64e 100644
--- a/spec/functional/instance_method/hash_spec.rb
+++ b/spec/functional/instance_method/hash_spec.rb
@@ -16,6 +16,7 @@ def to_hash
       context 'with an expectation that hash[:foo][:bar] is 3' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#to_hash' do
@@ -33,6 +34,7 @@ def to_hash
       context 'with an expectation that hash[:foo][:bar] is a Fixnum' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#to_hash' do
diff --git a/spec/functional/instance_method/range_spec.rb b/spec/functional/instance_method/range_spec.rb
index 39f528b..d413d1f 100644
--- a/spec/functional/instance_method/range_spec.rb
+++ b/spec/functional/instance_method/range_spec.rb
@@ -16,6 +16,7 @@ def a_range
       context "with an expectation that the return value is `'a'..'z'`" do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_range' do
@@ -33,6 +34,7 @@ def a_range
       context "with an expectation that the return value is a range" do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_range' do
@@ -48,4 +50,4 @@ def a_range
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/functional/instance_method/regex_spec.rb b/spec/functional/instance_method/regex_spec.rb
index 1969123..96ee399 100644
--- a/spec/functional/instance_method/regex_spec.rb
+++ b/spec/functional/instance_method/regex_spec.rb
@@ -16,6 +16,7 @@ def regex
       context 'with an expectation that a string matches the regex' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#regex' do
@@ -35,6 +36,7 @@ def regex
       context 'with an expectation that the regex is a Regex' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#regex' do
diff --git a/spec/functional/instance_method/string_spec.rb b/spec/functional/instance_method/string_spec.rb
index e893ad6..0a9a8ef 100644
--- a/spec/functional/instance_method/string_spec.rb
+++ b/spec/functional/instance_method/string_spec.rb
@@ -16,6 +16,7 @@ def a_string
       context 'with an expectation that the return value is "foo"' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_string' do
@@ -33,6 +34,7 @@ def a_string
       context 'with an expectation that the return value is a string' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_string' do
diff --git a/spec/functional/instance_method/symbol_spec.rb b/spec/functional/instance_method/symbol_spec.rb
index 9e3bb6b..15c9077 100644
--- a/spec/functional/instance_method/symbol_spec.rb
+++ b/spec/functional/instance_method/symbol_spec.rb
@@ -16,6 +16,7 @@ def a_symbol
       context 'with an expectation that the return value is :foo' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_symbol' do
@@ -33,6 +34,7 @@ def a_symbol
       context 'with an expectation that the return value is a symbol' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_symbol' do
diff --git a/spec/functional/reporter/method_loaded_spec.rb b/spec/functional/reporter/method_loaded_spec.rb
index 27c1d64..4c2331a 100644
--- a/spec/functional/reporter/method_loaded_spec.rb
+++ b/spec/functional/reporter/method_loaded_spec.rb
@@ -12,6 +12,7 @@ def alive?
           end
         """
         write_file 'spec/thing_spec.rb', """
+          $: << '.'
           require 'thing'
 
           describe 'Thing#alive?' do
@@ -39,6 +40,7 @@ def alive?
           end
         """
         write_file 'spec/thing_spec.rb', """
+          $: << '.'
           require 'thing'
 
           describe 'Thing#alive?' do
@@ -57,4 +59,4 @@ def alive?
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/functional/reporter/running_mutations_spec.rb b/spec/functional/reporter/running_mutations_spec.rb
index f5e6b39..227be9f 100644
--- a/spec/functional/reporter/running_mutations_spec.rb
+++ b/spec/functional/reporter/running_mutations_spec.rb
@@ -15,6 +15,7 @@ def alive?
 end
 CODE
       write_file 'spec/thing_spec.rb', """
+        $: << '.'
         require 'thing'
 
         describe 'Thing#alive?' do
@@ -59,4 +60,4 @@ def alive?
 STR
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/functional/runners/rspec_spec.rb b/spec/functional/runners/rspec_spec.rb
index a2645d0..b1a4a2d 100644
--- a/spec/functional/runners/rspec_spec.rb
+++ b/spec/functional/runners/rspec_spec.rb
@@ -23,4 +23,4 @@ def alive?; true end
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/functional/singleton_method/array_spec.rb b/spec/functional/singleton_method/array_spec.rb
index 1163f8a..2afc2fd 100644
--- a/spec/functional/singleton_method/array_spec.rb
+++ b/spec/functional/singleton_method/array_spec.rb
@@ -16,6 +16,7 @@ def self.to_a
       context 'with an expectation that the array is [1,2,3]' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.to_a' do
@@ -33,6 +34,7 @@ def self.to_a
       context 'with an expectation that the array responds to length' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.to_a' do
diff --git a/spec/functional/singleton_method/boolean_spec.rb b/spec/functional/singleton_method/boolean_spec.rb
index 57db646..dfa35ca 100644
--- a/spec/functional/singleton_method/boolean_spec.rb
+++ b/spec/functional/singleton_method/boolean_spec.rb
@@ -16,6 +16,7 @@ def self.alive?
       context 'with an expectation that the return value is true' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.alive?' do
@@ -33,6 +34,7 @@ def self.alive?
       context 'with an expectation that the return value is true or false' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.alive?' do
@@ -62,6 +64,7 @@ def self.alive?
       context 'with an expectation that the return value is false' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.alive?' do
@@ -79,6 +82,7 @@ def self.alive?
       context 'with an expectation that the return value is true or false' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.alive?' do
diff --git a/spec/functional/singleton_method/fixnum_spec.rb b/spec/functional/singleton_method/fixnum_spec.rb
index 344c060..3628f99 100644
--- a/spec/functional/singleton_method/fixnum_spec.rb
+++ b/spec/functional/singleton_method/fixnum_spec.rb
@@ -16,6 +16,7 @@ def self.answer
       context 'with an expectation that the return value is 42' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life.answer' do
@@ -33,6 +34,7 @@ def self.answer
       context 'with an expectation that the return value is a Fixnum' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life.answer' do
diff --git a/spec/functional/singleton_method/float_spec.rb b/spec/functional/singleton_method/float_spec.rb
index e5cdba9..cd201d1 100644
--- a/spec/functional/singleton_method/float_spec.rb
+++ b/spec/functional/singleton_method/float_spec.rb
@@ -16,6 +16,7 @@ def self.answer
       context 'with an expectation that the return value is 42.05' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life.answer' do
@@ -33,6 +34,7 @@ def self.answer
       context 'with an expectation that the return value is a Float' do
         before do
           write_file 'spec/life_spec.rb', """
+            $: << '.'
             require 'life'
 
             describe 'Life.answer' do
diff --git a/spec/functional/singleton_method/hash_spec.rb b/spec/functional/singleton_method/hash_spec.rb
index c4b17ed..ea1854c 100644
--- a/spec/functional/singleton_method/hash_spec.rb
+++ b/spec/functional/singleton_method/hash_spec.rb
@@ -16,6 +16,7 @@ def self.to_hash
       context 'with an expectation that hash[:foo][:bar] is 3' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.to_hash' do
@@ -33,6 +34,7 @@ def self.to_hash
       context 'with an expectation that hash[:foo][:bar] is a Fixnum' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.to_hash' do
diff --git a/spec/functional/singleton_method/range_spec.rb b/spec/functional/singleton_method/range_spec.rb
index a85ea92..23d4ac5 100644
--- a/spec/functional/singleton_method/range_spec.rb
+++ b/spec/functional/singleton_method/range_spec.rb
@@ -16,6 +16,7 @@ def self.a_range
       context "with an expectation that the return value is `'a'..'z'`" do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing#a_range' do
@@ -33,6 +34,7 @@ def self.a_range
       context "with an expectation that the return value is a range" do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.a_string' do
@@ -48,4 +50,4 @@ def self.a_range
       end
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/functional/singleton_method/regex_spec.rb b/spec/functional/singleton_method/regex_spec.rb
index e41d719..00a4da0 100644
--- a/spec/functional/singleton_method/regex_spec.rb
+++ b/spec/functional/singleton_method/regex_spec.rb
@@ -16,6 +16,7 @@ def self.regex
       context 'with an expectation that a string matches the regex' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.regex' do
@@ -35,6 +36,7 @@ def self.regex
       context 'with an expectation that the regex is a Regexp' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.regex' do
diff --git a/spec/functional/singleton_method/string_spec.rb b/spec/functional/singleton_method/string_spec.rb
index ed0c61e..a6f3ef8 100644
--- a/spec/functional/singleton_method/string_spec.rb
+++ b/spec/functional/singleton_method/string_spec.rb
@@ -16,6 +16,7 @@ def self.a_string
       context 'with an expectation that the return value is "foo"' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.a_string' do
@@ -33,6 +34,7 @@ def self.a_string
       context 'with an expectation that the return value is a string' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.a_string' do
diff --git a/spec/functional/singleton_method/symbol_spec.rb b/spec/functional/singleton_method/symbol_spec.rb
index 60dbd17..ee1ca82 100644
--- a/spec/functional/singleton_method/symbol_spec.rb
+++ b/spec/functional/singleton_method/symbol_spec.rb
@@ -16,6 +16,7 @@ def self.a_symbol
       context 'with an expectation that the return value is :foo' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.a_symbol' do
@@ -33,6 +34,7 @@ def self.a_symbol
       context 'with an expectation that the return value is a symbol' do
         before do
           write_file 'spec/thing_spec.rb', """
+            $: << '.'
             require 'thing'
 
             describe 'Thing.a_symbol' do