fix(testScheduler): fix normalizeEvents() utility

noremalizeEvents() failed to parse events if only one was passed at a time

Author: tusharmath

src/schedulers/TestScheduler.ts

@@ -39,6 +39,7 @@ function normalizeEvents(events: string): EventSource
 function normalizeEvents(events: any) {
   if (typeof events === 'string') return fromMarble(events)
   if (arguments.length > 1) return Array.from(arguments)
+  if (arguments.length === 1) return Array.isArray(events) ? events : [events]
   return events
 }
 

test/test.TestScheduler.ts

@@ -6,36 +6,49 @@ import {EVENT} from '../src/internal/Events'
 import {createTestScheduler} from '../src/schedulers/TestScheduler'
 
 describe('new TestScheduler()', () => {
-  it('should just ... ', () => {
-    const sh = createTestScheduler()
-    assert.strictEqual(sh.now(), 0)
+  describe('now()', () => {
+    it('should return current time', () => {
+      const sh = createTestScheduler()
 
-    sh.advanceBy(10)
-    assert.strictEqual(sh.now(), 10)
+      assert.strictEqual(sh.now(), 0)
 
-    sh.advanceBy(2)
-    assert.strictEqual(sh.now(), 12)
+      sh.advanceBy(10)
+      assert.strictEqual(sh.now(), 10)
 
-    sh.advanceTo(20)
-    assert.strictEqual(sh.now(), 20)
+      sh.advanceBy(2)
+      assert.strictEqual(sh.now(), 12)
+
+      sh.advanceTo(20)
+      assert.strictEqual(sh.now(), 20)
+    })
   })
 
-  it('should just ... ', () => {
-    const sh = createTestScheduler()
-    const {results} = sh.start(() =>
-      sh.Hot([
+  describe('start()', () => {
+    it('should return TestObserver', () => {
+      const sh = createTestScheduler()
+      const {results} = sh.start(() =>
+        sh.Hot([
+          EVENT.next(210, '0'),
+          EVENT.next(220, '1'),
+          EVENT.next(230, '2'),
+          EVENT.complete(240)
+        ])
+      )
+
+      assert.deepEqual(results, [
         EVENT.next(210, '0'),
         EVENT.next(220, '1'),
         EVENT.next(230, '2'),
         EVENT.complete(240)
       ])
-    )
-
-    assert.deepEqual(results, [
-      EVENT.next(210, '0'),
-      EVENT.next(220, '1'),
-      EVENT.next(230, '2'),
-      EVENT.complete(240)
-    ])
+    })
+  })
+
+  describe('Hot()', () => {
+    it('should create events ', () => {
+      const sh = createTestScheduler()
+      const {results} = sh.start(() => sh.Hot(EVENT.next(210, '0')))
+      assert.deepEqual(results, [EVENT.next(210, '0')])
+    })
   })
 })