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diff --git a/src/ext_depends/D-YAML/source/dyaml/test/compare.d b/src/ext_depends/D-YAML/source/dyaml/test/compare.d
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+++ b/src/ext_depends/D-YAML/source/dyaml/test/compare.d
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+
+//          Copyright Ferdinand Majerech 2011.
+// 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.compare;
+
+@safe unittest
+{
+    import dyaml : Loader;
+    import dyaml.test.common : assertNodesEqual, compareEvents, run;
+
+    /**
+    Test parser by comparing output from parsing two equivalent YAML files.
+
+    Params:
+        dataFilename = YAML file to parse.
+        canonicalFilename = Another file to parse, in canonical YAML format.
+    */
+    static void testParser(string dataFilename, string canonicalFilename) @safe
+    {
+        auto dataEvents = Loader.fromFile(dataFilename).parse();
+        auto canonicalEvents = Loader.fromFile(canonicalFilename).parse();
+
+        //BUG: the return value isn't checked! This test currently fails...
+        compareEvents(dataEvents, canonicalEvents);
+    }
+
+    /**
+    Test loader by comparing output from loading two equivalent YAML files.
+
+    Params:
+        dataFilename = YAML file to load.
+        canonicalFilename = Another file to load, in canonical YAML format.
+    */
+    static void testLoader(string dataFilename, string canonicalFilename) @safe
+    {
+        import std.array : array;
+        auto data = Loader.fromFile(dataFilename).array;
+        auto canonical = Loader.fromFile(canonicalFilename).array;
+
+        assert(data.length == canonical.length, "Unequal node count");
+        foreach (n; 0 .. data.length)
+        {
+            assertNodesEqual(data[n], canonical[n]);
+        }
+    }
+    run(&testParser, ["data", "canonical"]);
+    run(&testLoader, ["data", "canonical"], ["test_loader_skip"]);
+}