typescript(option): test: added tests for count

Signed-off-by: prescientmoon <git@moonythm.dev>

typescript/option/src/helpers/bindAsync.test.ts

@@ -1,6 +1,5 @@
 import { expect } from 'chai'
 import { Some, None } from '../types'
-import { constantly } from '@thi.ng/compose'
 import { bindAsync } from './bindAsync'
 
 describe('The bindAsync helper', () => {

typescript/option/src/helpers/count.test.ts

@@ -0,0 +1,22 @@
+import { expect } from 'chai'
+import { Some, None } from '../types'
+import { count } from './count'
+import { x } from '../../test/constants'
+
+describe('The count helper', () => {
+    it('should return 1 when given Some', () => {
+        // act
+        const result = count(Some(x))
+
+        // assert
+        expect(result).to.equal(1)
+    })
+
+    it('should return 0 when given None', () => {
+        // act
+        const result = count(None)
+
+        // assert
+        expect(result).to.equal(0)
+    })
+})

typescript/option/test/constants.ts

@@ -0,0 +1,2 @@
+// general value to pass around
+export const x = Symbol('x')

typescript/option/tsconfig.json

@@ -8,5 +8,5 @@
         "downlevelIteration": true,
         "target": "es6"
     },
-    "include": ["src", "sandbox"]
+    "include": ["src", "sandbox", "test"]
 }