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diff --git a/src/ext_depends/D-YAML/source/dyaml/test/inputoutput.d b/src/ext_depends/D-YAML/source/dyaml/test/inputoutput.d
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+
+//          Copyright Ferdinand Majerech 2011-2014.
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+
+module dyaml.test.inputoutput;
+
+@safe unittest
+{
+    import std.array : join, split;
+    import std.conv : to;
+    import std.exception : assertThrown;
+    import std.file : readText;
+    import std.system : endian, Endian;
+
+    import dyaml : Loader, Node, YAMLException;
+    import dyaml.test.common : run;
+
+    /**
+    Get an UTF-16 byte order mark.
+
+    Params:  wrong = Get the incorrect BOM for this system.
+
+    Returns: UTF-16 byte order mark.
+    */
+    static wchar bom16(bool wrong = false) pure @safe
+    {
+        wchar little = '\uFEFF';
+        wchar big = '\uFFFE';
+        if (!wrong)
+        {
+            return endian == Endian.littleEndian ? little : big;
+        }
+        return endian == Endian.littleEndian ? big : little;
+    }
+    /**
+    Get an UTF-32 byte order mark.
+
+    Params:  wrong = Get the incorrect BOM for this system.
+
+    Returns: UTF-32 byte order mark.
+    */
+    static dchar bom32(bool wrong = false) pure @safe
+    {
+        dchar little = '\uFEFF';
+        dchar big = '\uFFFE';
+        if (!wrong)
+        {
+            return endian == Endian.littleEndian ? little : big;
+        }
+        return endian == Endian.littleEndian ? big : little;
+    }
+    /**
+    Unicode input unittest. Tests various encodings.
+
+    Params:  unicodeFilename = File name to read from.
+    */
+    static void testUnicodeInput(string unicodeFilename) @safe
+    {
+        string data = readText(unicodeFilename);
+        string expected = data.split().join(" ");
+
+        Node output = Loader.fromString(data).load();
+        assert(output.as!string == expected);
+
+        foreach (buffer; [cast(ubyte[]) (bom16() ~ data.to!(wchar[])),
+             cast(ubyte[]) (bom32() ~ data.to!(dchar[]))])
+        {
+            output = Loader.fromBuffer(buffer).load();
+            assert(output.as!string == expected);
+        }
+    }
+    /**
+    Unicode input error unittest. Tests various encodings with incorrect BOMs.
+
+    Params:  unicodeFilename = File name to read from.
+    */
+    static void testUnicodeInputErrors(string unicodeFilename) @safe
+    {
+        string data = readText(unicodeFilename);
+        foreach (buffer; [cast(ubyte[]) (data.to!(wchar[])),
+             cast(ubyte[]) (data.to!(dchar[])),
+             cast(ubyte[]) (bom16(true) ~ data.to!(wchar[])),
+             cast(ubyte[]) (bom32(true) ~ data.to!(dchar[]))])
+        {
+            assertThrown(Loader.fromBuffer(buffer).load());
+        }
+    }
+    run(&testUnicodeInput, ["unicode"]);
+    run(&testUnicodeInputErrors, ["unicode"]);
+}