diff --git a/lib/reline.rb b/lib/reline.rb
index 2b21968371..cafaf578a0 100644
--- a/lib/reline.rb
+++ b/lib/reline.rb
@@ -304,7 +304,6 @@ module Reline
       $stderr.reopen(ENV['RELINE_STDERR_TTY'], 'w')
       $stderr.sync = true
     end
-    @@config.read
     otio = Reline::IOGate.prep
 
     may_req_ambiguous_char_width
@@ -324,9 +323,12 @@ module Reline
     @@line_editor.pre_input_hook = @@pre_input_hook
     @@line_editor.rerender
 
-    @@config.reset_default_key_bindings
-    Reline::IOGate::RAW_KEYSTROKE_CONFIG.each_pair do |key, func|
-      @@config.add_default_key_binding(key, func)
+    unless @@config.test_mode
+      @@config.read
+      @@config.reset_default_key_bindings
+      Reline::IOGate::RAW_KEYSTROKE_CONFIG.each_pair do |key, func|
+        @@config.add_default_key_binding(key, func)
+      end
     end
 
     key_stroke = Reline::KeyStroke.new(@@config)
diff --git a/lib/reline/config.rb b/lib/reline/config.rb
index 7639882027..b5ed6a89ba 100644
--- a/lib/reline/config.rb
+++ b/lib/reline/config.rb
@@ -78,7 +78,6 @@ class Reline::Config
   end
 
   def read(file = DEFAULT_PATH)
-    return if @test_mode
     file = ENV['INPUTRC'] if ENV['INPUTRC']
     begin
       if file.respond_to?(:readlines)
diff --git a/test/reline/test_within_pipe.rb b/test/reline/test_within_pipe.rb
index 586e782be4..132fdcafbc 100644
--- a/test/reline/test_within_pipe.rb
+++ b/test/reline/test_within_pipe.rb
@@ -21,4 +21,10 @@ class Reline::WithinPipeTest < Reline::TestCase
     @writer.write("abc\n")
     assert_equal 'abc', Reline.readmultiline(&proc{ true })
   end
+
+  def test_unknown_macro
+    @config.add_default_key_binding('abc'.bytes, :unknown_macro)
+    @writer.write("abcd\n")
+    assert_equal 'd', Reline.readmultiline(&proc{ true })
+  end
 end