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backend/node_modules/avvio/test/lib/create-promise.test.js

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+'use strict'
+
+const { test } = require('tap')
+const { createPromise } = require('../../lib/create-promise')
+
+test('createPromise() returns an object', (t) => {
+  t.plan(3)
+  t.type(createPromise(), 'object')
+  t.equal(Array.isArray(createPromise()), false)
+  t.notOk(Array.isArray(createPromise() !== null))
+})
+
+test('createPromise() returns an attribute with attribute resolve', (t) => {
+  t.plan(1)
+  t.ok('resolve' in createPromise())
+})
+
+test('createPromise() returns an attribute with attribute reject', (t) => {
+  t.plan(1)
+  t.ok('reject' in createPromise())
+})
+
+test('createPromise() returns an attribute with attribute createPromise', (t) => {
+  t.plan(1)
+  t.ok('promise' in createPromise())
+})
+
+test('when resolve is called, createPromise attribute is resolved', (t) => {
+  t.plan(1)
+  const p = createPromise()
+
+  p.promise
+    .then(() => {
+      t.pass()
+    })
+    .catch(() => {
+      t.fail()
+    })
+  p.resolve()
+})
+
+test('when reject is called, createPromise attribute is rejected', (t) => {
+  t.plan(1)
+  const p = createPromise()
+
+  p.promise
+    .then(() => {
+      t.fail()
+    })
+    .catch(() => {
+      t.pass()
+    })
+
+  p.reject()
+})