2 files changed, 58 insertions, 1 deletions
diff --git a/test/other_tools/just_mr/TARGETS b/test/other_tools/just_mr/TARGETS
index 4960b9df..fe423332 100644
--- a/test/other_tools/just_mr/TARGETS
+++ b/test/other_tools/just_mr/TARGETS
@@ -9,5 +9,17 @@
     ]
   , "stage": ["test", "other_tools", "just_mr"]
   }
-, "TESTS": {"type": "install", "tainted": ["test"], "deps": ["rc_merge"]}
+, "mirrors":
+  { "type": ["@", "rules", "CC/test", "test"]
+  , "name": ["mirrors"]
+  , "srcs": ["mirrors.test.cpp"]
+  , "private-deps":
+    [ ["@", "catch2", "", "catch2"]
+    , ["", "catch-main"]
+    , ["@", "src", "src/other_tools/just_mr", "mirrors"]
+    ]
+  , "stage": ["test", "other_tools", "just_mr"]
+  }
+, "TESTS":
+  {"type": "install", "tainted": ["test"], "deps": ["rc_merge", "mirrors"]}
 }
diff --git a/test/other_tools/just_mr/mirrors.test.cpp b/test/other_tools/just_mr/mirrors.test.cpp
new file mode 100644
index 00000000..926de549
--- /dev/null
+++ b/test/other_tools/just_mr/mirrors.test.cpp
@@ -0,0 +1,45 @@
+// Copyright 2024 Huawei Cloud Computing Technology Co., Ltd.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <vector>
+
+#include "catch2/catch_test_macros.hpp"
+#include "catch2/matchers/catch_matchers_all.hpp"
+#include "src/other_tools/just_mr/mirrors.hpp"
+
+TEST_CASE("SortByHostname") {
+    // setup inputs
+    auto mirrors = std::vector<std::string>({"file://foo/bar",
+                                             "https://keep.me/here",
+                                             "https://example.com:420/foo bar",
+                                             "./testing",
+                                             "https://example.com:420/foo baz",
+                                             "https://keep.me/second",
+                                             "http://user@bar.baz/foobar"});
+    auto hostnames =
+        std::vector<std::string>({"bar.baz", "example.com", "bar.baz"});
+
+    // compute ordered mirrors
+    auto ordered = MirrorsUtils::SortByHostname(mirrors, hostnames);
+
+    // compare with expected, Equals() honors order
+    auto expected = std::vector<std::string>({"http://user@bar.baz/foobar",
+                                              "https://example.com:420/foo bar",
+                                              "https://example.com:420/foo baz",
+                                              "file://foo/bar",
+                                              "https://keep.me/here",
+                                              "./testing",
+                                              "https://keep.me/second"});
+    CHECK_THAT(ordered, Catch::Matchers::Equals(expected));
+}