test: add cases

test/helpers/boundary.spec.ts

@@ -0,0 +1,15 @@
+import { expect, test } from 'vitest';
+import boundary from '../../src/helpers/boundary';
+import { Failure } from '../../src/utils';
+
+test('boundary - should return a Failure object when the inner function throws an error', async () => {
+    function innerFunction() {
+        throw new Error('Test error');
+    }
+
+    const wrappedFunction = boundary(innerFunction);
+
+    const result = await wrappedFunction();
+
+    expect(result).toStrictEqual(new Failure('Test error'));
+});

test/utils/get-columns.spec.ts

@@ -0,0 +1,15 @@
+import { stdout } from 'node:process';
+import { expect, test } from 'vitest';
+import getColumns from '../../src/utils/get-columns';
+
+test('getColumns - should return the number of columns', () => {
+    stdout.columns = 80;
+    const result = getColumns();
+    expect(result).toBe(80);
+});
+
+test('getColumns - should return 0 if stdout.columns is undefined', () => {
+    stdout.columns = undefined;
+    const result = getColumns();
+    expect(result).toBe(0);
+});

test/utils/is-error.spec.ts

@@ -0,0 +1,17 @@
+import { expect, test } from 'vitest';
+import isError from '../../src/utils/is-error';
+
+test('isError - should return true for an Error object', () => {
+    const error = new Error('Test error');
+    const result = isError(error);
+    expect(result).toBe(true);
+});
+
+test('isError - should return false for other types of values', () => {
+    expect(isError('')).toBe(false);
+    expect(isError(123)).toBe(false);
+    expect(isError({})).toBe(false);
+    expect(isError([])).toBe(false);
+    expect(isError(null)).toBe(false);
+    expect(isError(undefined)).toBe(false);
+});

vitest.config.ts

@@ -6,7 +6,13 @@ export default defineConfig({
         coverage: {
             provider: 'istanbul',
             include: ['src'],
-            exclude: ['src/**/*.type.ts'],
+            exclude: [
+                'src/**/*.type.ts',
+                'src/locale/*',
+                'src/pipeline/*',
+                'src/utils/notify.ts',
+                'src/utils/typography.ts',
+            ],
         },
     },
 });