1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/core/regexp/quote_spec.rb b/spec/ruby/core/regexp/quote_spec.rb
new file mode 100644
index 0000000000..27fa0c0669
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+++ b/spec/ruby/core/regexp/quote_spec.rb
@@ -0,0 +1,43 @@
+# encoding: binary
+
+require_relative '../../spec_helper'
+
+describe "Regexp.quote" do
+  it "escapes any characters with special meaning in a regular expression" do
+    Regexp.quote('\*?{}.+^$[]()- ').should == '\\\\\*\?\{\}\.\+\^\$\[\]\(\)\-\\ '
+    Regexp.quote("\*?{}.+^$[]()- ").should == '\\*\\?\\{\\}\\.\\+\\^\\$\\[\\]\\(\\)\\-\\ '
+    Regexp.quote('\n\r\f\t').should == '\\\\n\\\\r\\\\f\\\\t'
+    Regexp.quote("\n\r\f\t").should == '\\n\\r\\f\\t'
+  end
+
+  it "works with symbols" do
+    Regexp.quote(:symbol).should == 'symbol'
+  end
+
+  it "works with substrings" do
+    str = ".+[]()"[1...-1]
+    Regexp.quote(str).should == '\+\[\]\('
+  end
+
+  it "works for broken strings" do
+    Regexp.quote("a.\x85b.".dup.force_encoding("US-ASCII")).should =="a\\.\x85b\\.".dup.force_encoding("US-ASCII")
+    Regexp.quote("a.\x80".dup.force_encoding("UTF-8")).should == "a\\.\x80".dup.force_encoding("UTF-8")
+  end
+
+  it "sets the encoding of the result to US-ASCII if there are only US-ASCII characters present in the input String" do
+    str = "abc".dup.force_encoding("euc-jp")
+    Regexp.quote(str).encoding.should == Encoding::US_ASCII
+  end
+
+  it "sets the encoding of the result to the encoding of the String if any non-US-ASCII characters are present in an input String with valid encoding" do
+    str = "ありがとう".dup.force_encoding("utf-8")
+    str.valid_encoding?.should == true
+    Regexp.quote(str).encoding.should == Encoding::UTF_8
+  end
+
+  it "sets the encoding of the result to BINARY if any non-US-ASCII characters are present in an input String with invalid encoding" do
+    str = "\xff".dup.force_encoding "us-ascii"
+    str.valid_encoding?.should == false
+    Regexp.quote("\xff").encoding.should == Encoding::BINARY
+  end
+end