Improve string split

__tests__/actionUtils.test.ts

@@ -2,9 +2,16 @@ import * as core from "@actions/core";
 
 import { Events, Outputs, RefKey, State } from "../src/constants";
 import * as actionUtils from "../src/utils/actionUtils";
+import * as testUtils from "../src/utils/testUtils";
 
 jest.mock("@actions/core");
 
+beforeAll(() => {
+    jest.spyOn(core, "getInput").mockImplementation((name, options) => {
+        return jest.requireActual("@actions/core").getInput(name, options);
+    });
+});
+
 afterEach(() => {
     delete process.env[Events.Key];
     delete process.env[RefKey];
@@ -157,3 +164,33 @@ test("isValidEvent returns true for event that has a ref", () => {
 
     expect(isValidEvent).toBe(true);
 });
+
+test("getInputAsArray returns empty array if not required and missing", () => {
+    expect(actionUtils.getInputAsArray("foo")).toEqual([]);
+});
+
+test("getInputAsArray throws error if required and missing", () => {
+    expect(() =>
+        actionUtils.getInputAsArray("foo", { required: true })
+    ).toThrowError();
+});
+
+test("getInputAsArray handles single line correctly", () => {
+    testUtils.setInput("foo", "bar");
+    expect(actionUtils.getInputAsArray("foo")).toEqual(["bar"]);
+});
+
+test("getInputAsArray handles multiple lines correctly", () => {
+    testUtils.setInput("foo", "bar\nbaz");
+    expect(actionUtils.getInputAsArray("foo")).toEqual(["bar", "baz"]);
+});
+
+test("getInputAsArray handles different new lines correctly", () => {
+    testUtils.setInput("foo", "bar\r\nbaz");
+    expect(actionUtils.getInputAsArray("foo")).toEqual(["bar", "baz"]);
+});
+
+test("getInputAsArray handles empty lines correctly", () => {
+    testUtils.setInput("foo", "\n\nbar\n\nbaz\n\n");
+    expect(actionUtils.getInputAsArray("foo")).toEqual(["bar", "baz"]);
+});

__tests__/restore.test.ts

@@ -20,6 +20,13 @@ beforeAll(() => {
         const actualUtils = jest.requireActual("../src/utils/actionUtils");
         return actualUtils.isValidEvent();
     });
+
+    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
+        (name, options) => {
+            const actualUtils = jest.requireActual("../src/utils/actionUtils");
+            return actualUtils.getInputAsArray(name, options);
+        }
+    );
 });
 
 beforeEach(() => {

__tests__/save.test.ts

@@ -19,6 +19,14 @@ beforeAll(() => {
         return jest.requireActual("../src/utils/actionUtils").getCacheState();
     });
 
+    jest.spyOn(actionUtils, "getInputAsArray").mockImplementation(
+        (name, options) => {
+            return jest
+                .requireActual("../src/utils/actionUtils")
+                .getInputAsArray(name, options);
+        }
+    );
+
     jest.spyOn(actionUtils, "isExactKeyMatch").mockImplementation(
         (key, cacheResult) => {
             return jest