test: test new methods in majorMinorMappings utils

frontend/src/utils/majorMinorMappings.test.js

-import { getUpdatedMajor, getUpdatedMinor } from "./majorMinorMappings";
+import {
+  getUpdatedMajor,
+  getUpdatedMinor,
+  getAllMajors,
+  getAllMinors,
+  getUpdatedUnivMajorMinors,
+} from "./majorMinorMappings";
 
 test("GSM => IM", () => {
   const major = "GSM";
@@ -15,8 +21,40 @@ test("GI => GI", () => {
   expect(getUpdatedMajor(major)).toBe("GI");
 });
 
+test("IM => IM, GM, GSM", () => {
+  const major = "IM";
+  expect(getAllMajors(major).sort()).toEqual(["IM", "GSM", "GM"].sort());
+});
+
+test("GU => GU, GSU", () => {
+  const major = "GU";
+  expect(getAllMajors(major).sort()).toEqual(["GU", "GSU"].sort());
+});
+
+test("(_DUMMY_MAJOR_1, _DUMMY_MINOR_2) => _DUMMY_MINOR_1", () => {
+  const major = "_DUMMY_MAJOR_1";
+  const minor = "_DUMMY_MINOR_2";
+  expect(getAllMinors(major, minor).sort()).toEqual(
+    ["_DUMMY_MINOR_2", "_DUMMY_MINOR_1"].sort()
+  );
+});
+
 test("BR - FIL => BR - FIL", () => {
   const major = "BR";
   const minor = "FIL";
   expect(getUpdatedMinor(major, minor)).toBe("FIL");
 });
+
+test("univMajorMinors [] => []", () => {
+  expect(getUpdatedUnivMajorMinors([])).toEqual([]);
+});
+
+test("univMajorMinors dedup", () => {
+  const input = [
+    { major: "IM", minors: ["CMI"] },
+    { major: "GSM", minors: ["CMI"] },
+    { major: "GM", minors: ["MAT"] },
+  ];
+  const output = [{ major: "IM", minors: ["CMI", "MAT"] }];
+  expect(getUpdatedUnivMajorMinors(input)).toEqual(output);
+});