feat: add 'hasContentFor()' method (#195)

back to wormhole

close #194

src/components/wormhole.ts

@@ -89,12 +89,14 @@ export const Wormhole = Vue.extend({
       this.$delete(this.sources, source)
     },
     hasTarget(to: string) {
-      return !!this.targets[to] && this.targets[to][0]
+      return !!(this.targets[to] && this.targets[to][0])
     },
     hasSource(to: string) {
-      return !!this.sources[to] && this.sources[to][0]
+      return !!(this.sources[to] && this.sources[to][0])
+    },
+    hasContentFor(to: string) {
+      return !!this.transports[to] && !!this.transports[to].length
     },
-
     // Internal
     $_getTransportIndex({ to, from }: TransportVector): number {
       for (const i in this.transports[to]) {

tests/unit/specs/wormhole.spec.js

@@ -106,7 +106,7 @@ describe('Wormhole', function() {
 
     wormhole.registerTarget('target', new Vue({}))
     const check2 = wormhole.hasTarget('target')
-    expect(check2).toEqual(expect.any(Object))
+    expect(check2).toEqual(true)
 
     wormhole.unregisterTarget('target')
     const check3 = wormhole.hasTarget('target')
@@ -119,10 +119,25 @@ describe('Wormhole', function() {
 
     wormhole.registerSource('source', new Vue({}))
     const check2 = wormhole.hasSource('source')
-    expect(check2).toEqual(expect.any(Object))
+    expect(check2).toEqual(true)
 
     wormhole.unregisterSource('source')
     const check3 = wormhole.hasSource('source')
     expect(check3).toEqual(false)
   })
+
+  it('hasContentFor() returns boolean depending on content', () => {
+    expect(wormhole.hasContentFor('test')).toBe(false)
+    wormhole.open({
+      to: 'test',
+      from: 'test-source',
+      passengers: ['fakeVNode'],
+    })
+    expect(wormhole.hasContentFor('test')).toBe(true)
+    wormhole.close({
+      to: 'test',
+      from: 'test-source',
+    })
+    expect(wormhole.hasContentFor('test')).toBe(false)
+  })
 })