From e241784601eaf44cd7e118e97832e96619e81763 Mon Sep 17 00:00:00 2001
From: Matei Adriel <rafaeladriel11@gmail.com>
Date: Wed, 25 Dec 2019 15:01:44 +0200
Subject: [PATCH] typescript(option): test: wrote tests for flat
Signed-off-by: prescientmoon <git@moonythm.dev>
---
typescript/option/src/helpers/flat.test.ts | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 typescript/option/src/helpers/flat.test.ts
diff --git a/typescript/option/src/helpers/flat.test.ts b/typescript/option/src/helpers/flat.test.ts
new file mode 100644
index 0000000..2f52ec2
--- /dev/null
+++ b/typescript/option/src/helpers/flat.test.ts
@@ -0,0 +1,25 @@
+import { expect } from 'chai'
+import { flat } from './flat'
+import { None, Some } from '../types'
+import { someX } from '../../test/constants'
+
+describe('The flat helper', () => {
+ it('should return None when given None', () => {
+ // act
+ const result = flat(None)
+
+ // assert
+ expect(result).to.equal(None)
+ })
+
+ it('should return the inner Some(x) when given Some(Some(x))', () => {
+ // arrange
+ const value = Some(someX)
+
+ // act
+ const result = flat(value)
+
+ // assert
+ expect(result).to.equal(someX)
+ })
+})