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diff --git a/scalalib/test/src/dependency/metadata/MetadataLoaderFactoryTests.scala b/scalalib/test/src/dependency/metadata/MetadataLoaderFactoryTests.scala
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+++ b/scalalib/test/src/dependency/metadata/MetadataLoaderFactoryTests.scala
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+/*
+ * This file contains code originally published under the following license:
+ *
+ * Copyright (c) 2012, Roman Timushev
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * The name of the author may not be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package mill.scalalib.dependency.metadata
+
+import coursier.Fetch.Content
+import coursier.core.{Artifact, Module, Project, Repository}
+import coursier.ivy.IvyRepository
+import coursier.maven.MavenRepository
+import coursier.util.{EitherT, Monad}
+import utest._
+
+object MetadataLoaderFactoryTests extends TestSuite {
+
+  val tests = Tests {
+    'mavenRepository - {
+      val mavenRepo = MavenRepository("https://repo1.maven.org/maven2")
+      assertMatch(MetadataLoaderFactory(mavenRepo)) {
+        case Some(MavenMetadataLoader(`mavenRepo`)) =>
+      }
+    }
+    'ivyRepository - {
+      val Right(ivyRepo) = IvyRepository.parse(
+        "https://dl.bintray.com/sbt/sbt-plugin-releases/" + coursier.ivy.Pattern.default.string,
+        dropInfoAttributes = true)
+      assertMatch(MetadataLoaderFactory(ivyRepo)) { case None => }
+    }
+    'otherRepository - {
+      val otherRepo = new CustomRepository
+      assertMatch(MetadataLoaderFactory(otherRepo)) { case None => }
+    }
+  }
+
+  case class CustomRepository() extends Repository {
+    override def find[F[_]](module: Module, version: String, fetch: Content[F])(
+        implicit F: Monad[F]): EitherT[F, String, (Artifact.Source, Project)] =
+      ???
+  }
+}