require File.expand_path(File.dirname(__FILE__) + '/test_helper.rb')

class TestFakerBitcoin < Test::Unit::TestCase

  def test_address
    assert Faker::Bitcoin.address.match(/^[13][1-9A-Za-z][^OIl]{20,40}/)
  end

  def test_testnet_address
    assert_match(/\A[mn][1-9A-Za-z]{32,34}\Z/, Faker::Bitcoin.testnet_address)
    assert_not_match(/[OIl]/, Faker::Bitcoin.testnet_address)
  end

end

require File.expand_path(File.dirname(__FILE__) + '/test_helper.rb')

class TestFakerBitcoin < Test::Unit::TestCase

  def test_address
    assert Faker::Bitcoin.address.match(/^[13][1-9A-Za-z][^OIl]{20,40}/)
  end

  def test_testnet_address
    assert_match /\A[mn][1-9A-Za-z]{32,34}\Z/, Faker::Bitcoin.testnet_address
    assert_not_match /[OIl]/, Faker::Bitcoin.testnet_address
  end

end

--- 
+++ 
@@ -7,8 +7,8 @@
   end
 
   def test_testnet_address
-    assert_match /\A[mn][1-9A-Za-z]{32,34}\Z/, Faker::Bitcoin.testnet_address
-    assert_not_match /[OIl]/, Faker::Bitcoin.testnet_address
+    assert_match(/\A[mn][1-9A-Za-z]{32,34}\Z/, Faker::Bitcoin.testnet_address)
+    assert_not_match(/[OIl]/, Faker::Bitcoin.testnet_address)
   end
 
 end
Remove `warning: ambiguous first argument; put parentheses or a space even after `/' operator`
