1 files changed, 5 insertions, 11 deletions
diff --git a/spec/ruby/core/string/b_spec.rb b/spec/ruby/core/string/b_spec.rb
index 638971f9ce..d181447709 100644
--- a/spec/ruby/core/string/b_spec.rb
+++ b/spec/ruby/core/string/b_spec.rb
@@ -1,22 +1,16 @@
 # -*- encoding: utf-8 -*-
+# frozen_string_literal: false
 require_relative '../../spec_helper'
 
 describe "String#b" do
-  it "returns an ASCII-8BIT encoded string" do
-    "Hello".b.should == "Hello".force_encoding(Encoding::ASCII_8BIT)
-    "こんちには".b.should == "こんちには".force_encoding(Encoding::ASCII_8BIT)
+  it "returns a binary encoded string" do
+    "Hello".b.should == "Hello".force_encoding(Encoding::BINARY)
+    "こんちには".b.should == "こんちには".force_encoding(Encoding::BINARY)
   end
 
   it "returns new string without modifying self" do
     str = "こんちには"
-    str.b.should_not equal(str)
+    str.b.should_not.equal?(str)
     str.should == "こんちには"
   end
-
-  it "copies own tainted/untrusted status to the returning value" do
-    utf_8 = "こんちには".taint.untrust
-    ret = utf_8.b
-    ret.tainted?.should be_true
-    ret.untrusted?.should be_true
-  end
 end