From 0bc9b770e459f3e573be70a21221361dea2d9fa8 Mon Sep 17 00:00:00 2001 From: samdbeckham Date: Fri, 28 Jun 2019 17:41:21 +0100 Subject: [PATCH] Adds a waitForMutation helper for VueX --- .../helpers/vue_test_utils_helper.js | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/spec/javascripts/helpers/vue_test_utils_helper.js b/spec/javascripts/helpers/vue_test_utils_helper.js index 121e99c9783..68326e37ae7 100644 --- a/spec/javascripts/helpers/vue_test_utils_helper.js +++ b/spec/javascripts/helpers/vue_test_utils_helper.js @@ -1,5 +1,3 @@ -/* eslint-disable import/prefer-default-export */ - const vNodeContainsText = (vnode, text) => (vnode.text && vnode.text.includes(text)) || (vnode.children && vnode.children.filter(child => vNodeContainsText(child, text)).length); @@ -19,3 +17,19 @@ export const shallowWrapperContainsSlotText = (shallowWrapper, slotName, text) = Boolean( shallowWrapper.vm.$slots[slotName].filter(vnode => vNodeContainsText(vnode, text)).length, ); + +/** + * Returns a promise that waits for a mutation to be fired before resolving + * NOTE: There's no reject action here so it will hang if it waits for a mutation that won't happen. + * @param {Object} store - The Vue store that contains the mutations + * @param {String} expectedMutationType - The Mutation to wait for + */ +export const waitForMutation = (store, expectedMutationType) => + new Promise(resolve => { + const unsubscribe = store.subscribe(mutation => { + if (mutation.type === expectedMutationType) { + unsubscribe(); + resolve(); + } + }); + });