1 files changed, 47 insertions, 0 deletions
diff --git a/spec/ruby/core/regexp/source_spec.rb b/spec/ruby/core/regexp/source_spec.rb
new file mode 100644
index 0000000000..4eebf280f0
--- /dev/null
+++ b/spec/ruby/core/regexp/source_spec.rb
@@ -0,0 +1,47 @@
+# -*- encoding: utf-8 -*-
+require_relative '../../spec_helper'
+
+describe "Regexp#source" do
+  it "returns the original string of the pattern" do
+    not_supported_on :opal do
+      /ab+c/ix.source.should == "ab+c"
+    end
+    /x(.)xz/.source.should == "x(.)xz"
+  end
+
+  it "keeps escape sequences as is" do
+    /\x20\+/.source.should == '\x20\+'
+  end
+
+  describe "escaping" do
+    it "keeps escaping of metacharacter" do
+      /\$/.source.should == "\\$"
+    end
+
+    it "keeps escaping of metacharacter used as a terminator" do
+      %r+\++.source.should == "\\+"
+    end
+
+    it "removes escaping of non-metacharacter used as a terminator" do
+      %r@\@@.source.should == "@"
+    end
+
+    it "keeps escaping of non-metacharacter not used as a terminator" do
+      /\@/.source.should == "\\@"
+    end
+  end
+
+  not_supported_on :opal do
+    it "has US-ASCII encoding when created from an ASCII-only \\u{} literal" do
+      re = /[\u{20}-\u{7E}]/
+      re.source.encoding.should.equal?(Encoding::US_ASCII)
+    end
+  end
+
+  not_supported_on :opal do
+    it "has UTF-8 encoding when created from a non-ASCII-only \\u{} literal" do
+      re = /[\u{20}-\u{7EE}]/
+      re.source.encoding.should.equal?(Encoding::UTF_8)
+    end
+  end
+end