configure jest

__tests__/cli.test.ts

@@ -0,0 +1,12 @@
+// @ts-ignore
+// import { jest } from '@jest/globals';
+
+import { generateCommitMessageByDiff } from '../src/generateCommitMessageFromGitDiff';
+
+test.skip('generateCommitMessageFromGitDiff', async () => {
+  const GIT_DIFF = ``;
+
+  const res = await generateCommitMessageByDiff(GIT_DIFF);
+
+  expect(res).toBe('lol');
+});

__tests__/split-files.test.ts

@@ -0,0 +1,79 @@
+import { getCommitMsgsPromisesFromFileDiffs } from '../src/generateCommitMessageFromGitDiff';
+
+const oneFileThreeChanges = `diff --git a/example.txt b/example.txt
+index e69de29..3f6a3fa 100644
+--- a/example.txt
++++ b/example.txt
+@@ -1,2 +1,2 @@
+-Hello, World!
++Hello, everyone!
+ This is an example file.
+@@ -4,2 +4,2 @@
+-Goodbye, World!
++Goodbye, everyone!
+ Have a great day!
+@@ -7,2 +7,2 @@
+-It's a sunny day!
++It's a rainy day!
+ Let's go for a walk.`;
+
+const fourFilesOneChangeEach = `diff --git a/file1.txt b/file1.txt
+ index e69de29..3f6a3fa 100644
+ --- a/file1.txt
+ +++ b/file1.txt
+ @@ -1,2 +1,2 @@
+ -Hello, World!
+ +Hello, everyone!
+  This is file 1.
+
+ diff --git a/file2.txt b/file2.txt
+ index 87c0ddc..d7b182e 100644
+ --- a/file2.txt
+ +++ b/file2.txt
+ @@ -1,3 +1,3 @@
+  This is file 2.
+ -Goodbye, World!
+ +Goodbye, everyone!
+  Have a great day!
+
+ diff --git a/file3.txt b/file3.txt
+ index e69de29..3f6a3fa 100644
+ --- a/file3.txt
+ +++ b/file3.txt
+ @@ -1,4 +1,4 @@
+  This is file 3.
+ -It's a sunny day!
+ +It's a rainy day!
+  Let's go for a walk.
+
+ diff --git a/file4.txt b/file4.txt
+ index 3f6a3fa..87c0ddc 100644
+ --- a/file4.txt
+ +++ b/file4.txt
+ @@ -1,5 +1,5 @@
+  This is file 4.
+ -It's time to sleep.
+ +It's time to wake up.
+  Goodnight.
+ `;
+
+test('1', async () => {
+  const MAX_LENGTH = 50;
+  const oneFile3Changes = await getCommitMsgsPromisesFromFileDiffs(
+    oneFileThreeChanges,
+    MAX_LENGTH
+  );
+
+  expect(oneFile3Changes).toBe('lol');
+});
+
+test('2', async () => {
+  const MAX_LENGTH = 50;
+
+  const fourFilesOneChange = await getCommitMsgsPromisesFromFileDiffs(
+    fourFilesOneChangeEach,
+    MAX_LENGTH
+  );
+
+  expect(fourFilesOneChange).toBe('lol');
+});

jest.config.ts

@@ -0,0 +1,21 @@
+import type { JestConfigWithTsJest } from 'ts-jest';
+
+const jestConfig: JestConfigWithTsJest = {
+  // [...]
+  extensionsToTreatAsEsm: ['.ts'],
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1'
+  },
+  transform: {
+    // '^.+\\.[tj]sx?$' to process js/ts with `ts-jest`
+    // '^.+\\.m?[tj]sx?$' to process js/ts/mjs/mts with `ts-jest`
+    '^.+\\.tsx?$': [
+      'ts-jest',
+      {
+        useESM: true
+      }
+    ]
+  }
+};
+
+export default jestConfig;

package.json

@@ -45,19 +45,23 @@
     "build:push": "npm run build && git add . && git commit -m 'build' && git push",
     "deploy": "npm run build:push && npm version patch && git push --tags && npm publish --tag latest",
     "lint": "eslint src --ext ts && tsc --noEmit",
-    "format": "prettier --write src"
+    "format": "prettier --write src",
+    "test": "NODE_OPTIONS=--experimental-vm-modules jest --verbose --coverage --config jest.config.ts"
   },
   "devDependencies": {
     "@commitlint/types": "^17.4.4",
     "@types/ini": "^1.3.31",
     "@types/inquirer": "^9.0.3",
+    "@types/jest": "^29.5.4",
     "@types/node": "^16.18.14",
     "@typescript-eslint/eslint-plugin": "^5.45.0",
     "@typescript-eslint/parser": "^5.45.0",
     "dotenv": "^16.0.3",
     "esbuild": "^0.15.18",
     "eslint": "^8.28.0",
+    "jest": "^29.6.4",
     "prettier": "^2.8.4",
+    "ts-jest": "^29.1.1",
     "ts-node": "^10.9.1",
     "typescript": "^4.9.3"
   },

src/commands/commit.ts

@@ -199,17 +199,17 @@ export async function commit(
     }
 
     if (stagedFiles.length === 0 && changedFiles.length > 0) {
-      const files = (await multiselect({
+      const files = await multiselect({
         message: chalk.cyan('Select the files you want to add to the commit:'),
         options: changedFiles.map((file) => ({
           value: file,
           label: file
         }))
-      })) as string[];
+      });
 
       if (isCancel(files)) process.exit(1);
 
-      await gitAdd({ files });
+      await gitAdd({ files: files as string[] });
     }
 
     await commit(extraArgs, false);

tsconfig.json

@@ -1,9 +1,9 @@
 {
   "compilerOptions": {
     "target": "ESNext",
-    "lib": ["ES5", "ES6"],
-
     "module": "ESNext",
+
+    "lib": ["ES5", "ES6"],
     // "rootDir": "./src",
     "resolveJsonModule": true,
     "moduleResolution": "node",