[vscode/engine] getGitLog 함수 관련 테스트 코드 구현

packages/vscode/jest.config.mjs

@@ -0,0 +1,9 @@
+const config = {
+  preset: "ts-jest",
+  testEnvironment: "node",
+  testPathIgnorePatterns: ["/node_modules/", "/out/"],
+  verbose: true,
+  rootDir: "./",
+};
+
+export default config;

packages/vscode/package.json

@@ -81,7 +81,7 @@
     "pretest": "npm run compile-tests && npm run compile && npm run lint",
     "lint": "eslint src --ext ts",
     "lint:fix": "eslint src --ext ts --fix",
-    "test": "node ./out/test/runTest.js"
+    "test": "jest"
   },
   "dependencies": {
     "@githru-vscode-ext/analysis-engine": "^0.7.0",
@@ -90,6 +90,7 @@
   },
   "devDependencies": {
     "@types/glob": "^7.2.0",
+    "@types/jest": "^29.5.12",
     "@types/mocha": "^9.1.1",
     "@types/node": "14.x",
     "@types/vscode": "^1.67.0",
@@ -107,8 +108,10 @@
     "eslint-plugin-unused-imports": "^3.0.0",
     "formdata-polyfill": "^4.0.10",
     "glob": "^8.0.1",
+    "jest": "^29.7.0",
     "mocha": "^9.2.2",
     "prettier": "^3.0.1",
+    "ts-jest": "^29.2.5",
     "ts-loader": "^9.2.8",
     "typescript": "^4.6.4",
     "webpack": "^5.70.0",

packages/vscode/src/test/utils/getGitLog.spec.ts

@@ -0,0 +1,61 @@
+import * as cp from "child_process";
+
+import { getGitLog } from "../../utils/git.util";
+
+const generateMockGitLogData = (index: number) => `
+commit ${index}1234567890abcdef1234567890abcdef${index}5678 (HEAD -> main)
+Author: Mock User ${index} <mock${index}@example.com>
+AuthorDate: Mon Sep ${index} 21:42:00 2023 +0000
+Commit: Mock Committer ${index} <committer${index}@example.com>
+CommitDate: Mon Sep ${index} 21:43:00 2023 +0000
+
+    Commit message ${index}
+`;
+
+jest.mock("child_process");
+const mockSpawn = cp.spawn as jest.Mock;
+
+let mockSpawnCallCount = 0;
+
+mockSpawn.mockImplementation(() => {
+  return {
+    stdout: {
+      on: jest.fn((event, callback) => {
+        if (event === "data") {
+          const mockData = generateMockGitLogData(mockSpawnCallCount);
+          callback(Buffer.from(mockData));
+          mockSpawnCallCount++;
+        }
+        if (event === "close") {
+          callback();
+        }
+      }),
+    },
+    stderr: {
+      on: jest.fn((event, callback) => {
+        callback(Buffer.from("mocked error message"));
+      }),
+    },
+    on: jest.fn((event, callback) => {
+      if (event === "exit") {
+        callback(0);
+      }
+    }),
+  };
+});
+
+describe("getGitLog util test", () => {
+  afterEach(() => {
+    mockSpawnCallCount = 0; // initailize call count
+  });
+
+  it("should return the combined git log output from number of threads", async () => {
+    const result = await getGitLog("git", "/mocked/path/to/repo");
+
+    const expectedData = Array.from({ length: mockSpawnCallCount }) // Create an array with length equal to call count
+      .map((_, index) => generateMockGitLogData(index)) // Insert mock data into the array for each index
+      .join(""); // Concatenate all mock data into a single string
+
+    return expect(result).toEqual(expectedData);
+  });
+});

packages/vscode/tsconfig.json

@@ -5,7 +5,7 @@
     "outDir": "dist",
     "lib": ["ES2020"],
     "sourceMap": true,
-    "rootDir": "src",
+    "rootDir": "./src",
     "strict": true,
     "allowSyntheticDefaultImports": true,
     "skipLibCheck": true,