1 files changed, 44 insertions, 0 deletions
diff --git a/spec/ruby/core/regexp/inspect_spec.rb b/spec/ruby/core/regexp/inspect_spec.rb
new file mode 100644
index 0000000000..a2855cae5b
--- /dev/null
+++ b/spec/ruby/core/regexp/inspect_spec.rb
@@ -0,0 +1,44 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Regexp#inspect" do
+  it "returns a formatted string that would eval to the same regexp" do
+    not_supported_on :opal do
+      /ab+c/ix.inspect.should == "/ab+c/ix"
+      /a(.)+s/n.inspect.should =~ %r|/a(.)+s/n?|  # Default 'n' may not appear
+    end
+    # 1.9 doesn't round-trip the encoding flags, such as 'u'. This is
+    # seemingly by design.
+    /a(.)+s/m.inspect.should == "/a(.)+s/m"     # But a specified one does
+  end
+
+  it "returns options in the order 'mixn'" do
+    //nixm.inspect.should == "//mixn"
+  end
+
+  it "does not include the 'o' option" do
+    //o.inspect.should == "//"
+  end
+
+  it "does not include a character set code" do
+    //u.inspect.should == "//"
+    //s.inspect.should == "//"
+    //e.inspect.should == "//"
+  end
+
+  it "correctly escapes forward slashes /" do
+    Regexp.new("/foo/bar").inspect.should == "/\\/foo\\/bar/"
+    Regexp.new("/foo/bar[/]").inspect.should == "/\\/foo\\/bar[\\/]/"
+  end
+
+  it "doesn't over escape forward slashes" do
+    /\/foo\/bar/.inspect.should == '/\/foo\/bar/'
+  end
+
+  it "escapes 2 slashes in a row properly" do
+    Regexp.new("//").inspect.should == '/\/\//'
+  end
+
+  it "does not over escape" do
+    Regexp.new('\\\/').inspect.should == "/\\\\\\//"
+  end
+end