short-sha

__tests__/shorten.test.ts

@@ -0,0 +1,39 @@
+import {shorten} from '../src/shorten'
+
+test('normal case', () => {
+  expect(shorten('6e8dcce3fd71cfe9aca3e18c82255dd1e4052aa1', 7)).toBe('6e8dcce')
+})
+
+test('already short', () => {
+  expect(shorten('6e8dcce', 7)).toBe('6e8dcce')
+})
+
+test('too short', () => {
+  expect(() => shorten('6e8dcc', 7)).toThrowError('input is too short')
+})
+
+test('undefined', () => {
+  expect(() => shorten(undefined as any, 7)).toThrowError('sha must be defined')
+})
+
+test('null', () => {
+  expect(() => shorten(null as any, 7)).toThrowError('sha must be defined')
+})
+
+test('invalid length', () => {
+  expect(() =>
+    shorten('6e8dcce3fd71cfe9aca3e18c82255dd1e4052aa1', 'x' as any)
+  ).toThrowError('length is invalid')
+})
+
+test('negative length', () => {
+  expect(() =>
+    shorten('6e8dcce3fd71cfe9aca3e18c82255dd1e4052aa1', -1)
+  ).toThrowError('length is invalid')
+})
+
+test('zero length', () => {
+  expect(() =>
+    shorten('6e8dcce3fd71cfe9aca3e18c82255dd1e4052aa1', 0)
+  ).toThrowError('length is invalid')
+})