test: reimplement unit testing (#229)

* test: add test for `getInputs` function

* ci(test): add `test-package` job

.env.yarn

@@ -0,0 +1 @@
+NODE_OPTIONS=--experimental-vm-modules

.github/workflows/test.yaml

@@ -30,6 +30,26 @@ jobs:
       - name: Check Lint
         run: yarn lint
 
+  test-package:
+    name: Test Package
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4.1.1
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4.0.2
+        with:
+          node-version: latest
+
+      - name: Setup Yarn
+        uses: threeal/setup-yarn-action@v2.0.0
+        with:
+          version: stable
+
+      - name: Test Package
+        run: yarn test
+
   test-action:
     name: Test Action
     runs-on: ${{ matrix.os }}-latest

.gitignore

@@ -1,6 +1,8 @@
 .*
+!.env.yarn
 !.eslint*
 !.git*
 
 build/
+coverage/
 node_modules/

jest.config.json

@@ -0,0 +1,19 @@
+{
+  "collectCoverage": true,
+  "coverageThreshold": {
+    "global": {
+      "branches": 100,
+      "functions": 100,
+      "lines": 100,
+      "statements": 100
+    }
+  },
+  "moduleNameMapper": {
+    "^(\\.{1,2}/.*)\\.js$": "$1"
+  },
+  "preset": "ts-jest/presets/default-esm",
+  "transform": {
+    "^.+\\.ts$": ["ts-jest", { "useESM": true }]
+  },
+  "verbose": true
+}

package.json

@@ -4,7 +4,8 @@
   "scripts": {
     "build": "ncc build src/index.ts",
     "format": "prettier --write --cache . !dist !README.md",
-    "lint": "eslint --ignore-path .gitignore ."
+    "lint": "eslint --ignore-path .gitignore .",
+    "test": "jest"
   },
   "dependencies": {
     "@actions/core": "^1.10.1",
@@ -12,12 +13,16 @@
     "@actions/io": "^1.1.3"
   },
   "devDependencies": {
+    "@jest/globals": "^29.7.0",
+    "@types/jest": "^29.5.12",
     "@types/node": "^20.11.24",
     "@typescript-eslint/eslint-plugin": "^7.1.0",
     "@typescript-eslint/parser": "^7.1.1",
     "@vercel/ncc": "^0.38.1",
     "eslint": "^8.57.0",
+    "jest": "^29.7.0",
     "prettier": "^3.2.5",
+    "ts-jest": "^29.1.2",
     "typescript": "^5.3.3"
   },
   "packageManager": "yarn@4.1.1"

src/inputs.test.ts

@@ -0,0 +1,128 @@
+import { jest } from "@jest/globals";
+
+jest.unstable_mockModule("@actions/core", () => ({
+  getBooleanInput: jest.fn(),
+  getInput: jest.fn(),
+  getMultilineInput: jest.fn(),
+}));
+
+describe("get action inputs", () => {
+  describe("with default values", () => {
+    beforeEach(async () => {
+      const { getBooleanInput, getInput, getMultilineInput } = await import(
+        "@actions/core"
+      );
+
+      jest.mocked(getBooleanInput).mockReturnValue(false);
+      jest.mocked(getInput).mockReturnValue("");
+      jest.mocked(getMultilineInput).mockReturnValue([]);
+    });
+
+    it("should get the action inputs", async () => {
+      const { getInputs } = await import("./inputs.js");
+
+      const inputs = getInputs();
+
+      expect(inputs).toStrictEqual({
+        sourceDir: ".",
+        buildDir: "build",
+        generator: "",
+        cCompiler: "",
+        cxxCompiler: "",
+        cFlags: "",
+        cxxFlags: "",
+        options: [],
+        args: [],
+        runBuild: false,
+        buildArgs: [],
+        runTest: false,
+        testArgs: [],
+      });
+    });
+  });
+
+  describe("with specified values", () => {
+    beforeEach(async () => {
+      const { getBooleanInput, getInput, getMultilineInput } = await import(
+        "@actions/core"
+      );
+
+      jest.mocked(getBooleanInput).mockImplementation((name) => {
+        switch (name) {
+          case "run-build":
+            return true;
+          case "run-test":
+            return true;
+        }
+        throw new Error(`invalid input name: ${name}`);
+      });
+
+      jest.mocked(getInput).mockImplementation((name) => {
+        switch (name) {
+          case "source-dir":
+            return "some-source";
+          case "build-dir":
+            return "some-build";
+          case "generator":
+            return "some-generator";
+          case "c-compiler":
+            return "some-c-compiler";
+          case "cxx-compiler":
+            return "some-cxx-compiler";
+        }
+        throw new Error(`invalid input name: ${name}`);
+      });
+
+      jest.mocked(getMultilineInput).mockImplementation((name) => {
+        switch (name) {
+          case "c-flags":
+            return ["some-c-flag another-c-flag", "some-other-c-flag"];
+          case "cxx-flags":
+            return ["some-cxx-flag another-cxx-flag", "some-other-cxx-flag"];
+          case "options":
+            return ["some-options another-options", "some-other-options"];
+          case "args":
+            return ["some-args another-args", "some-other-args"];
+          case "build-args":
+            return [
+              "some-build-args another-build-args",
+              "some-other-build-args",
+            ];
+          case "test-args":
+            return ["some-test-args another-test-args", "some-other-test-args"];
+        }
+        throw new Error(`invalid input name: ${name}`);
+      });
+    });
+
+    it("should get the action inputs", async () => {
+      const { getInputs } = await import("./inputs.js");
+
+      const inputs = getInputs();
+
+      expect(inputs).toStrictEqual({
+        sourceDir: "some-source",
+        buildDir: "some-build",
+        generator: "some-generator",
+        cCompiler: "some-c-compiler",
+        cxxCompiler: "some-cxx-compiler",
+        cFlags: "some-c-flag another-c-flag some-other-c-flag",
+        cxxFlags: "some-cxx-flag another-cxx-flag some-other-cxx-flag",
+        options: ["some-options", "another-options", "some-other-options"],
+        args: ["some-args", "another-args", "some-other-args"],
+        runBuild: true,
+        buildArgs: [
+          "some-build-args",
+          "another-build-args",
+          "some-other-build-args",
+        ],
+        runTest: true,
+        testArgs: [
+          "some-test-args",
+          "another-test-args",
+          "some-other-test-args",
+        ],
+      });
+    });
+  });
+});