Mocked stdin should be closed to avoid hanging forever

src/stdmock.ts

@@ -22,7 +22,10 @@ export const stdin = (input: string, delay = 0) => {
   return {
     run: () => {
       stdin = require('mock-stdin').stdin()
-      setTimeout(() => stdin.send(input), delay)
+      setTimeout(() => {
+        stdin.send(input)
+        stdin.end()
+      }, delay)
     },
     finally() {
       stdin.restore()

test/stdmock.test.ts

@@ -101,19 +101,25 @@ describe('stdin', () => {
     .stdin('whoa there, broseph\n')
     .stdout()
     .it('mocks', (_, done) => {
+      let input: string
       process.stdin.setEncoding('utf8')
-      process.stdin.once('data', data => {
-        done(data === 'whoa there, broseph\n' ? undefined : 'invalid stdin')
+      process.stdin.once("data", data => input = data)
+      process.stdin.on("end", () => {
+        expect(input).to.eq('whoa there, broseph\n')
+        done()
       })
     })
 
   fancy
     .stdin('whoa there again, broseph\n')
     .stdout()
     .it('mocks again', (_, done) => {
+      let input: string
       process.stdin.setEncoding('utf8')
-      process.stdin.once('data', data => {
-        done(data === 'whoa there again, broseph\n' ? undefined : 'invalid stdin')
+      process.stdin.once("data", data => input = data)
+      process.stdin.on("end", () => {
+        expect(input).to.eq('whoa there again, broseph\n')
+        done()
       })
     })
 })