fix: common registration name formatter

packages/medusa/src/utils/__tests__/format-registration-name.js

@@ -0,0 +1,34 @@
+import path from "path"
+import formatRegistrationName from "../format-registration-name"
+
+describe("formatRegistrationName", () => {
+  const tests = [
+    [["medusa-test-dir", "dist", "services", "my-test.js"], "myTestService"],
+    [["medusa-test-dir", "dist", "services", "my.js"], "myService"],
+    [["services", "my-quite-long-file.js"], "myQuiteLongFileService"],
+    [
+      ["/", "Users", "seb", "com.medusa.js", "services", "dot.js"],
+      "dotService",
+    ],
+    [
+      ["/", "Users", "seb.rin", "com.medusa.js", "services", "dot.js"],
+      "dotService",
+    ],
+    [
+      ["/", "Users", "seb.rin", "com.medusa.js", "repositories", "dot.js"],
+      "dotRepository",
+    ],
+    [
+      ["/", "Users", "seb.rin", "com.medusa.js", "models", "dot.js"],
+      "dotModel",
+    ],
+    [["C:", "server", "services", "dot.js"], "dotService"],
+  ]
+
+  test.each(
+    tests.map(([pathParts, expected]) => [path.join(...pathParts), expected])
+  )("Service %s -> %s", (fn, expected) => {
+    const res = formatRegistrationName(fn)
+    expect(res).toEqual(expected)
+  })
+})