1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/language/source_encoding_spec.rb b/spec/ruby/language/source_encoding_spec.rb
new file mode 100644
index 0000000000..d4240cee39
--- /dev/null
+++ b/spec/ruby/language/source_encoding_spec.rb
@@ -0,0 +1,41 @@
+require_relative '../spec_helper'
+
+describe "Source files" do
+
+  describe "encoded in UTF-8 without a BOM" do
+    it "can be parsed" do
+      ruby_exe(fixture(__FILE__, "utf8-nobom.rb"), args: "2>&1").should == "hello\n"
+    end
+  end
+
+  describe "encoded in UTF-8 with a BOM" do
+    it "can be parsed" do
+      ruby_exe(fixture(__FILE__, "utf8-bom.rb"), args: "2>&1").should == "hello\n"
+    end
+  end
+
+  describe "encoded in UTF-16 LE without a BOM" do
+    it "are parsed because empty as they contain a NUL byte before the encoding comment" do
+      ruby_exe(fixture(__FILE__, "utf16-le-nobom.rb"), args: "2>&1").should == ""
+    end
+  end
+
+  describe "encoded in UTF-16 LE with a BOM" do
+    it "are invalid because they contain an invalid UTF-8 sequence before the encoding comment" do
+      ruby_exe(fixture(__FILE__, "utf16-le-bom.rb"), args: "2>&1").should =~ /invalid multibyte char/
+    end
+  end
+
+  describe "encoded in UTF-16 BE without a BOM" do
+    it "are parsed as empty because they contain a NUL byte before the encoding comment" do
+      ruby_exe(fixture(__FILE__, "utf16-be-nobom.rb"), args: "2>&1").should == ""
+    end
+  end
+
+  describe "encoded in UTF-16 BE with a BOM" do
+    it "are invalid because they contain an invalid UTF-8 sequence before the encoding comment" do
+      ruby_exe(fixture(__FILE__, "utf16-be-bom.rb"), args: "2>&1").should =~ /invalid multibyte char/
+    end
+  end
+
+end