diff --git a/tests/steps/test-unique.sh b/tests/steps/test-unique.sh
new file mode 100755
index 00000000..e7465882
--- /dev/null
+++ b/tests/steps/test-unique.sh
@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+# The MIT License (MIT)
+#
+# Copyright (c) 2021-2024 Yegor Bugayenko
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+set -e
+set -o pipefail
+
+temp=$1
+stdout=$2
+
+{
+    java="${temp}/Foo(xls;)';не привет '\".java"
+    cat > "${java}" <<EOT
+    class Foo extends Boo implements Bar {
+        // This is static
+        private static int X = 1;
+        private String z;
+
+        Foo(String zz) {
+            this.z = zz;
+        }
+        private final boolean boom() { return true; }
+    }
+EOT
+    "${LOCAL}/steps/measure-file.sh" "${java}" "${temp}/m1"
+    set -x
+    all=$(find "${temp}" -name 'm1.*' -type f -exec basename {} \; | sort)
+    expected=$(echo "${all}" | wc -l | xargs)
+    actual=$(echo "${all}" | uniq | wc -l | xargs)
+    if [ ! "${actual}" = "${expected}" ]; then
+        echo "Exactly ${expected} unique metric names were expected, but ${actual} were actually found"
+        exit 1
+    fi
+    set +x
+} > "${stdout}" 2>&1
+echo "👍🏻 All provided metrics are named uniquely"
+