Add util methods to get/set session storage

gui/__tests__/utils/sessionStorage.test.js

@@ -0,0 +1,21 @@
+import { get, set } from 'utils/sessionStorage'
+
+describe('utils/sessionStorage', () => {
+  beforeEach(() => {
+    global.localStorage.clear()
+  })
+
+  describe('get', () => {
+    it('returns a JS object for JSON stored as "chainlink.session" in localStorage', () => {
+      global.localStorage.setItem('chainlink.session', '{"foo":"FOO"}')
+      expect(get()).toEqual({foo: 'FOO'})
+    })
+  })
+
+  describe('set', () => {
+    it('saves the JS object as JSON under the key "chainlink.session" in localStorage', () => {
+      set({foo: 'FOO'})
+      expect(global.localStorage.getItem('chainlink.session')).toEqual('{"foo":"FOO"}')
+    })
+  })
+})

gui/__tests__/utils/storage.test.js

@@ -0,0 +1,30 @@
+import { get, set } from 'utils/storage'
+
+describe('utils/storage', () => {
+  beforeEach(() => {
+    global.localStorage.clear()
+  })
+
+  describe('get', () => {
+    it('returns a JS object for JSON keyed under "chainlink." in localStorage', () => {
+      global.localStorage.setItem('chainlink.foo', '{"foo":"FOO"}')
+      expect(get('foo')).toEqual({foo: 'FOO'})
+    })
+
+    it('returns an empty JS object when not valid JSON', () => {
+      global.localStorage.setItem('chainlink.foo', '{"foo"}')
+      expect(get('foo')).toEqual({})
+    })
+
+    it('returns an empty JS object when the key does not exist', () => {
+      expect(get('foo')).toEqual({})
+    })
+  })
+
+  describe('set', () => {
+    it('saves the JS object as JSON keyed under "chainlink." in localStorage', () => {
+      set('foo', {foo: 'FOO'})
+      expect(global.localStorage.getItem('chainlink.foo')).toEqual('{"foo":"FOO"}')
+    })
+  })
+})

gui/src/utils/sessionStorage.js

@@ -0,0 +1,5 @@
+import * as storage from 'utils/storage'
+
+export const get = () => storage.get('session')
+
+export const set = obj => storage.set('session', obj)

gui/src/utils/storage.js

@@ -0,0 +1,14 @@
+export const get = key => {
+  const localStorageItem = global.localStorage.getItem(`chainlink.${key}`)
+  let obj = {}
+
+  if (localStorageItem) {
+    try { return JSON.parse(localStorageItem) } catch (e) {}
+  }
+
+  return obj
+}
+
+export const set = (key, obj) => {
+  global.localStorage.setItem(`chainlink.${key}`, JSON.stringify(obj))
+}

jest.setup.js

@@ -1,5 +1,6 @@
 import { configure } from 'enzyme'
 import Adapter from 'enzyme-adapter-react-16'
+import 'mock-local-storage'
 
 configure({ adapter: new Adapter() })
 

package.json

@@ -44,6 +44,7 @@
     "jest-environment-enzyme": "^6.0.0",
     "jest-silent-reporter": "^0.0.4",
     "json-pretty-html": "^1.1.2",
+    "mock-local-storage": "^1.0.5",
     "moment": "^2.20.1",
     "numeral": "^2.0.6",
     "query-string": "^6.1.0",

yarn.lock

@@ -2811,6 +2811,10 @@ copy-to-clipboard@^3:
   dependencies:
     toggle-selection "^1.0.3"
 
+core-js@^0.8.3:
+  version "0.8.4"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-0.8.4.tgz#c22665f1e0d1b9c3c5e1b08dabd1f108695e4fcf"
+
 core-js@^1.0.0:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
@@ -5167,7 +5171,7 @@ global-prefix@^1.0.1:
     is-windows "^1.0.1"
     which "^1.2.14"
 
-global@^4.3.0, global@~4.3.0:
+global@^4.3.0, global@^4.3.2, global@~4.3.0:
   version "4.3.2"
   resolved "https://registry.yarnpkg.com/global/-/global-4.3.2.tgz#e76989268a6c74c38908b1305b10fc0e394e9d0f"
   dependencies:
@@ -7804,6 +7808,13 @@ mock-fs@^4.1.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/mock-fs/-/mock-fs-4.5.0.tgz#75245b966f7e3defe197b03454af9c5b355594b7"
 
+mock-local-storage@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/mock-local-storage/-/mock-local-storage-1.0.5.tgz#899ff300027cefed47816e6dc539bb059fcce489"
+  dependencies:
+    core-js "^0.8.3"
+    global "^4.3.2"
+
 moment@^2.15.2, moment@^2.20.1:
   version "2.22.1"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.22.1.tgz#529a2e9bf973f259c9643d237fda84de3a26e8ad"