add go test

.eslintrc.js

@@ -44,6 +44,7 @@ module.exports = {
     '@typescript-eslint/no-non-null-assertion': 0,
     'simple-import-sort/imports': 'error',
     'simple-import-sort/exports': 'error',
+    'prefer-const': ['error', { destructuring: 'all'}],
   },
 };
 

packages/tools/src/go.test.ts

@@ -0,0 +1,53 @@
+import { go } from './go'
+
+describe('preforms go unit test', () => {
+  describe('async callback should return', () => {
+    test('null result if error thrown', async () => {
+      const [err, result] = await go(async () => {
+        throw new Error('test error')
+      })
+
+      expect(err).toBeInstanceOf(Error)
+      expect(result).toBeNull()
+    })
+
+    test('result if no error thrown', async () => {
+      const [err, result] = await go(async () => {
+        return 'test result'
+      })
+      expect(err).toBeNull()
+      expect(result).toBe('test result')
+    })
+  })
+
+  describe('sync callback should return', () => {
+    test('null result if error thrown', async () => {
+      const [err, result] = await go(() => {
+        throw new Error('test error')
+      })
+      expect(err).toBeInstanceOf(Error)
+      expect(result).toBeNull()
+    })
+
+    test('result if no error thrown', async () => {
+      const [err, result] = await go(() => {
+        return 'test result'
+      })
+      expect(err).toBeNull()
+      expect(result).toBe('test result')
+    })
+  })
+
+  test('should redeclare error during few executions', async () => {
+    let [err, result] = await go(async () => {
+      throw new Error('test error')
+    })
+
+    expect(err).toBeInstanceOf(Error)
+    expect(result).toBeNull()
+    ;[err] = await go(async () => {
+      return 'success'
+    })
+    expect(err).toBeNull()
+  })
+})

packages/tools/src/index.ts

@@ -1,6 +1,7 @@
 export * from '@/enums'
 export * from '@/errors'
 export * from '@/events'
+export * from '@/go'
 export * from '@/helpers'
 export * from '@/math'
 export * from '@/time'