Update Jest & Enzyme, Add snapshot tests (#307)

* Add disclaimer modal to footer

* Remove duplicate code & unnecessary styles

* Fix formatting noise

* remove un-used css style

* Fix tslint error & add media query for modals

* Nest Media Query

* Update Jest & Enzyme, Add snapshot tests

* Fix tslint errors in /spec, Update mock localstorage

* Update types in tests, Fix tslint error

* Specify module versions for browser

* Update sendTransaction snapshot

common/libs/contract.ts

@@ -12,10 +12,10 @@ interface ABITypedSlot {
 
 interface ABIMethod {
   name: string;
-  type: 'function';
-  constant: boolean;
+  type: string;
+  constant?: boolean;
   inputs: ABITypedSlot[];
-  outputs: ABITypedSlot[];
+  outputs?: ABITypedSlot[];
   // default - false
   payable?: boolean;
 }

jest_config/__mocks__/fileMock.ts

@@ -0,0 +1 @@
+module.exports = 'test-file-stub';

jest_config/__mocks__/localStorage.ts

@@ -1,4 +1,4 @@
-export default class LocalStorageMock {
+class LocalStorageMock {
   private store: object;
 
   constructor() {
@@ -21,3 +21,7 @@ export default class LocalStorageMock {
     delete this.store[key];
   }
 }
+
+Object.defineProperty(window, 'localStorage', {
+  value: new LocalStorageMock()
+});

jest_config/__mocks__/styleMock.ts

@@ -0,0 +1 @@
+module.exports = {};

jest_config/jest.config.json

@@ -1,17 +1,22 @@
 {
+  "rootDir": "../",
   "transform": {
     "^.+\\.tsx?$": "<rootDir>/node_modules/ts-jest/preprocessor.js"
   },
   "testRegex": "(/__tests__/.*|(\\.|/)(test|spec))\\.(jsx?|tsx?)$",
-  "moduleFileExtensions": [
-    "ts",
-    "tsx",
-    "js",
-    "jsx",
-    "json"
-  ],
+  "moduleDirectories": ["node_modules", "common"],
+  "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json"],
+  "moduleNameMapper": {
+    "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$":
+      "<rootDir>/jest_config/__mocks__/fileMock.ts",
+    "\\.(css|scss|less)$": "<rootDir>/jest_config/__mocks__/styleMock.ts"
+  },
   "testPathIgnorePatterns": ["<rootDir>/common/config"],
-  "setupFiles": ["<rootDir>/jest_config/setupJest.js"],
+  "setupFiles": [
+    "<rootDir>/jest_config/setupJest.js",
+    "<rootDir>/jest_config/__mocks__/localStorage.ts"
+  ],
   "automock": false,
-  "moduleDirectories": ["node_modules", "common"]
+  "snapshotSerializers": ["enzyme-to-json/serializer"],
+  "browser": true
 }

package.json

@@ -46,7 +46,7 @@
     "@types/bignumber.js": "^4.0.2",
     "@types/classnames": "^2.2.3",
     "@types/history": "^4.6.0",
-    "@types/jest": "^21.1.0",
+    "@types/jest": "^21.1.4",
     "@types/lodash": "^4.14.74",
     "@types/moment": "^2.13.0",
     "@types/prop-types": "^15.5.1",
@@ -72,7 +72,9 @@
     "copy-webpack-plugin": "^4.0.1",
     "css-loader": "^0.28.7",
     "empty": "^0.10.1",
-    "enzyme": "^2.8.0",
+    "enzyme": "^3.1.0",
+    "enzyme-adapter-react-16": "^1.0.2",
+    "enzyme-to-json": "^3.1.4",
     "express": "^4.15.4",
     "extract-text-webpack-plugin": "^3.0.0",
     "file-loader": "^0.11.0",
@@ -81,7 +83,7 @@
     "html-webpack-plugin": "^2.30.1",
     "husky": "^0.14.3",
     "image-webpack-loader": "^3.4.2",
-    "jest": "^19.0.2",
+    "jest": "^21.2.1",
     "less": "^2.7.2",
     "less-loader": "^4.0.3",
     "lint-staged": "^4.2.2",
@@ -92,12 +94,14 @@
     "prettier": "^1.7.0",
     "progress": "^2.0.0",
     "react-hot-loader": "^3.0.0-beta.6",
+    "react-test-renderer": "^16.0.0",
     "redux-devtools-extension": "^2.13.0",
+    "redux-test-utils": "^0.1.3",
     "resolve-url-loader": "^2.0.0",
     "rimraf": "^2.6.2",
     "sass-loader": "^6.0.2",
     "style-loader": "^0.18.2",
-    "ts-jest": "^21.0.1",
+    "ts-jest": "^21.1.3",
     "tslint": "^5.7.0",
     "tslint-config-prettier": "^1.5.0",
     "tslint-react": "^3.2.0",

spec/libs/contract.spec.ts

@@ -1,5 +1,4 @@
 import Contract from 'libs/contract';
-import Big from 'bignumber.js';
 
 describe('Contract', () => {
   // From the ABI docs
@@ -7,16 +6,16 @@ describe('Contract', () => {
   const testAbi = [
     {
       type: 'event',
+      name: 'Event',
       inputs: [
         { name: 'a', type: 'uint256', indexed: true },
         { name: 'b', type: 'bytes32', indexed: false }
-      ],
-      name: 'Event'
+      ]
     },
     {
       type: 'function',
-      inputs: [{ name: 'a', type: 'uint256' }],
       name: 'foo',
+      inputs: [{ name: 'a', type: 'uint256' }],
       outputs: []
     }
   ];

spec/libs/decrypt.spec.ts

@@ -6,50 +6,52 @@ import {
   decryptMnemonicToPrivKey
 } from '../../common/libs/decrypt';
 
-//deconstructed elements of a V1 encrypted priv key
-const encpkey =
-  'U2FsdGVkX19us8qXfYyeQhxyzV7aFlXckG/KrRLajoCGBKO4/saefxGs/3PrCLWxZEbx2vn6V0VDWrkDUkL+8S4MK7FL9LCiIKxeCq/ciwX9YQepsRRetG2MExuUWkQ6365d';
-const pass = 'testtesttest';
-const salt = 'brPKl32MnkI=';
-const ciphertext =
-  'HHLNXtoWVdyQb8qtEtqOgIYEo7j+xp5/Eaz/c+sItbFkRvHa+fpXRUNauQNSQv7xLgwrsUv0sKIgrF4Kr9yLBf1hB6mxFF60bYwTG5RaRDrfrl0=';
-const iv = 'k9YWF8ZBCoyuFS6CfGS+7w==';
-const key = 'u9uhwRmBQDJ12MUBkIrO5EzMQZTYEf6hTBDzSJBKJ2k=';
-const pkey = 'a56d4f23449a10ddcdd94bad56f895640097800406840aa8fe545d324d422c02';
+// Elements of a V1 encrypted priv key
+const v1 = {
+  encpkey:
+    'U2FsdGVkX19us8qXfYyeQhxyzV7aFlXckG/KrRLajoCGBKO4/saefxGs/3PrCLWxZEbx2vn6V0VDWrkDUkL+8S4MK7FL9LCiIKxeCq/ciwX9YQepsRRetG2MExuUWkQ6365d',
+  pass: 'testtesttest',
+  salt: 'brPKl32MnkI=',
+  ciphertext:
+    'HHLNXtoWVdyQb8qtEtqOgIYEo7j+xp5/Eaz/c+sItbFkRvHa+fpXRUNauQNSQv7xLgwrsUv0sKIgrF4Kr9yLBf1hB6mxFF60bYwTG5RaRDrfrl0=',
+  iv: 'k9YWF8ZBCoyuFS6CfGS+7w==',
+  key: 'u9uhwRmBQDJ12MUBkIrO5EzMQZTYEf6hTBDzSJBKJ2k=',
+  pkey: 'a56d4f23449a10ddcdd94bad56f895640097800406840aa8fe545d324d422c02'
+};
 
 describe('decryptPrivKey', () => {
   it('should decrypt encrypted pkey string to pkey buffer', () => {
-    const decrypt = decryptPrivKey(encpkey, pass);
+    const decrypt = decryptPrivKey(v1.encpkey, v1.pass);
 
     expect(decrypt).toBeInstanceOf(Buffer);
-    expect(decrypt.toString('hex')).toEqual(pkey);
+    expect(decrypt.toString('hex')).toEqual(v1.pkey);
     expect(decrypt.length).toEqual(32);
   });
 });
 
 describe('decodeCryptojsSalt', () => {
   it('should derive correct salt and ciphertext from pkey string', () => {
-    const decode = decodeCryptojsSalt(encpkey);
+    const decode = decodeCryptojsSalt(v1.encpkey);
 
     expect(decode.salt).toBeInstanceOf(Buffer);
     expect(decode.ciphertext).toBeInstanceOf(Buffer);
-    expect(decode.salt.toString('base64')).toEqual(salt);
-    expect(decode.ciphertext.toString('base64')).toEqual(ciphertext);
+    expect(decode.salt.toString('base64')).toEqual(v1.salt);
+    expect(decode.ciphertext.toString('base64')).toEqual(v1.ciphertext);
   });
 });
 
 describe('evp_kdf', () => {
   it('should derive correct key and iv', () => {
     const result = evp_kdf(
-      new Buffer(pass, 'utf8'),
-      new Buffer(salt, 'base64'),
+      new Buffer(v1.pass, 'utf8'),
+      new Buffer(v1.salt, 'base64'),
       { keysize: 32, ivsize: 16 }
     );
 
     expect(result.key).toBeInstanceOf(Buffer);
     expect(result.iv).toBeInstanceOf(Buffer);
-    expect(result.key.toString('base64')).toEqual(key);
-    expect(result.iv.toString('base64')).toEqual(iv);
+    expect(result.key.toString('base64')).toEqual(v1.key);
+    expect(result.iv.toString('base64')).toEqual(v1.iv);
   });
 });
 

spec/libs/erc20.spec.ts

@@ -1,6 +1,5 @@
 import Big from 'bignumber.js';
 import ERC20 from 'libs/erc20';
-import abi from 'ethereumjs-abi';
 const MEW_ADDRESS = '0x7cB57B5A97eAbe94205C07890BE4c1aD31E486A8';
 
 describe('ERC20', () => {

spec/libs/units.spec.ts

@@ -1,17 +1,17 @@
 import Big from 'bignumber.js';
-import { toWei, toUnit } from '../../common/libs/units';
+import { toWei, toUnit, UnitKey } from '../../common/libs/units';
 
 describe('Units', () => {
   describe('toWei', () => {
     const conversions = [
       {
         value: '0.001371',
-        unit: 'ether',
+        unit: 'ether' as UnitKey,
         wei: '1371000000000000'
       },
       {
         value: '9',
-        unit: 'gwei',
+        unit: 'gwei' as UnitKey,
         wei: '9000000000'
       }
     ];
@@ -28,14 +28,14 @@ describe('Units', () => {
     const conversions = [
       {
         value: '.41849',
-        fromUnit: 'ether',
-        toUnit: 'gwei',
+        fromUnit: 'ether' as UnitKey,
+        toUnit: 'gwei' as UnitKey,
         output: '418490000'
       },
       {
         value: '4924.71',
-        fromUnit: 'nanoether',
-        toUnit: 'szabo',
+        fromUnit: 'nanoether' as UnitKey,
+        toUnit: 'szabo' as UnitKey,
         output: '4.92471'
       }
     ];

spec/pages/ENS.spec.tsx

@@ -0,0 +1,16 @@
+import React from 'react';
+import Enzyme from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+import ENS from 'containers/Tabs/ENS';
+import shallowWithStore from '../utils/shallowWithStore';
+import { createMockStore } from 'redux-test-utils';
+
+Enzyme.configure({ adapter: new Adapter() });
+
+it('render snapshot', () => {
+  const testState = {};
+  const store = createMockStore(testState);
+  const component = shallowWithStore(<ENS />, store);
+
+  expect(component).toMatchSnapshot();
+});

spec/pages/GenerateWallet.spec.tsx

@@ -0,0 +1,25 @@
+import React from 'react';
+import Enzyme from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+import GenerateWallet from 'containers/Tabs/GenerateWallet';
+import shallowWithStore from '../utils/shallowWithStore';
+import { createMockStore } from 'redux-test-utils';
+
+Enzyme.configure({ adapter: new Adapter() });
+
+it('render snapshot', () => {
+  const testState = {
+    form: {
+      walletPasswordForm: {}
+    },
+    generateWallet: {
+      activeStep: {},
+      password: {},
+      wallet: {}
+    }
+  };
+  const store = createMockStore(testState);
+  const component = shallowWithStore(<GenerateWallet />, store);
+
+  expect(component).toMatchSnapshot();
+});

spec/pages/SendTransaction.spec.tsx

@@ -0,0 +1,44 @@
+import React from 'react';
+import Enzyme from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+import SendTransaction from 'containers/Tabs/SendTransaction';
+import shallowWithStore from '../utils/shallowWithStore';
+import { createMockStore } from 'redux-test-utils';
+
+Enzyme.configure({ adapter: new Adapter() });
+
+it('render snapshot', () => {
+  const testStateConfig = {
+    languageSelection: 'en',
+    nodeSelection: 'rop_mew',
+    gasPriceGwei: 21,
+    offline: false,
+    forceOffline: false
+  };
+  const testState = {
+    wallet: {},
+    balance: {},
+    tokenBalances: {},
+    node: {},
+    nodeLib: {},
+    network: {},
+    tokens: [],
+    gasPrice: {},
+    transactions: {},
+    offline: {},
+    forceOffline: {},
+    config: testStateConfig,
+    customTokens: []
+  };
+  const location = {
+    search:
+      '?to=73640ebefe93e4d0d6e9030ee9c1866ad1f3b9f1feeb403e978c4952d8369b39'
+  };
+  const store = createMockStore(testState);
+  const component = shallowWithStore(
+    <SendTransaction location={location} />,
+    store
+  );
+
+  expect(component).toMatchSnapshot();
+});

spec/pages/Swap.spec.tsx

@@ -0,0 +1,35 @@
+import React from 'react';
+import Enzyme from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+import Swap from 'containers/Tabs/Swap';
+import shallowWithStore from '../utils/shallowWithStore';
+import { createMockStore } from 'redux-test-utils';
+
+Enzyme.configure({ adapter: new Adapter() });
+
+it('render snapshot', () => {
+  const testState = {
+    swap: {
+      originAmount: {},
+      destinationAmount: {},
+      originKind: {},
+      destinationKind: {},
+      destinationKindOptions: {},
+      originKindOptions: {},
+      step: {},
+      bityRates: {},
+      bityOrder: {},
+      destinationAddress: {},
+      isFetchingRates: {},
+      secondsRemaining: {},
+      outputTx: {},
+      isPostingOrder: {},
+      orderStatus: {},
+      paymentAddress: {}
+    }
+  };
+  const store = createMockStore(testState);
+  const component = shallowWithStore(<Swap />, store);
+
+  expect(component).toMatchSnapshot();
+});

spec/pages/ViewWallet.spec.tsx

@@ -0,0 +1,16 @@
+import React from 'react';
+import Enzyme from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+import ViewWallet from 'containers/Tabs/ViewWallet';
+import shallowWithStore from '../utils/shallowWithStore';
+import { createMockStore } from 'redux-test-utils';
+
+Enzyme.configure({ adapter: new Adapter() });
+
+it('render snapshot', () => {
+  const testState = {};
+  const store = createMockStore(testState);
+  const component = shallowWithStore(<ViewWallet />, store);
+
+  expect(component).toMatchSnapshot();
+});

spec/pages/__snapshots__/ENS.spec.tsx.snap

@@ -0,0 +1,7 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`render snapshot 1`] = `
+<ENS
+  dispatch={[Function]}
+/>
+`;

spec/pages/__snapshots__/GenerateWallet.spec.tsx.snap

@@ -0,0 +1,13 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`render snapshot 1`] = `
+<GenerateWallet
+  activeStep={Object {}}
+  continueToPaper={[Function]}
+  generateNewWallet={[Function]}
+  password={Object {}}
+  resetGenerateWallet={[Function]}
+  wallet={Object {}}
+  walletPasswordForm={Object {}}
+/>
+`;

spec/pages/__snapshots__/Swap.spec.tsx.snap

@@ -0,0 +1,37 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`render snapshot 1`] = `
+<Swap
+  bityOrder={Object {}}
+  bityOrderCreateRequestedSwap={[Function]}
+  bityRates={Object {}}
+  changeStepSwap={[Function]}
+  destinationAddress={Object {}}
+  destinationAddressSwap={[Function]}
+  destinationAmount={Object {}}
+  destinationAmountSwap={[Function]}
+  destinationKind={Object {}}
+  destinationKindOptions={Object {}}
+  destinationKindSwap={[Function]}
+  isFetchingRates={Object {}}
+  isPostingOrder={Object {}}
+  loadBityRatesRequestedSwap={[Function]}
+  orderStatus={Object {}}
+  originAmount={Object {}}
+  originAmountSwap={[Function]}
+  originKind={Object {}}
+  originKindOptions={Object {}}
+  originKindSwap={[Function]}
+  outputTx={Object {}}
+  paymentAddress={Object {}}
+  restartSwap={[Function]}
+  secondsRemaining={Object {}}
+  showNotification={[Function]}
+  startOrderTimerSwap={[Function]}
+  startPollBityOrderStatus={[Function]}
+  step={Object {}}
+  stopLoadBityRatesSwap={[Function]}
+  stopOrderTimerSwap={[Function]}
+  stopPollBityOrderStatus={[Function]}
+/>
+`;

spec/pages/__snapshots__/ViewWallet.spec.tsx.snap

@@ -0,0 +1,34 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`render snapshot 1`] = `
+<Connect(TabSection)>
+  <section
+    className="container"
+  >
+    <div
+      className="tab-content"
+    >
+      <article
+        className="tab-pane active"
+      >
+        <article
+          className="collapse-container"
+        >
+          <div>
+            <h1>
+              View Wallet Info
+            </h1>
+          </div>
+          <div>
+            <p>
+              <Translate
+                translationKey="VIEWWALLET_Subtitle"
+              />
+            </p>
+          </div>
+        </article>
+      </article>
+    </div>
+  </section>
+</Connect(TabSection)>
+`;

spec/reducers/config.spec.ts

@@ -3,10 +3,6 @@ import * as configActions from 'actions/config';
 import { NODES } from 'config/data';
 
 describe('config reducer', () => {
-  it('should return the initial state', () => {
-    expect(config(undefined, {})).toEqual(INITIAL_STATE);
-  });
-
   it('should handle CONFIG_LANGUAGE_CHANGE', () => {
     const language = 'en';
     expect(config(undefined, configActions.changeLanguage(language))).toEqual({
@@ -16,7 +12,7 @@ describe('config reducer', () => {
   });
 
   it('should handle CONFIG_NODE_CHANGE', () => {
-    const node = NODES[0];
+    const node = Object.keys(NODES)[0];
 
     expect(config(undefined, configActions.changeNode(node))).toEqual({
       ...INITIAL_STATE,

spec/reducers/generateWallet.spec.ts

@@ -2,10 +2,6 @@ import { generateWallet, INITIAL_STATE } from 'reducers/generateWallet';
 import * as generateWalletActions from 'actions/generateWallet';
 
 describe('generateWallet reducer', () => {
-  it('should return the initial state', () => {
-    expect(generateWallet(undefined, {})).toEqual(INITIAL_STATE);
-  });
-
   it('should handle GENERATE_WALLET_CONTINUE_TO_PAPER', () => {
     expect(
       generateWallet(undefined, generateWalletActions.continueToPaper())

spec/reducers/swap.spec.ts

@@ -8,10 +8,6 @@ import * as swapActions from 'actions/swap';
 import without from 'lodash/without';
 
 describe('swap reducer', () => {
-  it('should return the initial state', () => {
-    expect(swap(undefined, {})).toEqual(INITIAL_STATE);
-  });
-
   it('should handle SWAP_ORIGIN_KIND', () => {
     const newOriginKind = 'ETH';
     const newDestinationKind = buildDestinationKind(
@@ -84,7 +80,9 @@ describe('swap reducer', () => {
   it('should handle SWAP_LOAD_BITY_RATES_SUCCEEDED', () => {
     const bityRates = {
       BTCETH: 0.01,
-      ETHREP: 10
+      ETHREP: 10,
+      ETHBTC: 0,
+      BTCREP: 0
     };
     expect(
       swap(undefined, swapActions.loadBityRatesSucceededSwap(bityRates))
@@ -134,14 +132,22 @@ describe('swap reducer', () => {
   });
 
   it('should handle SWAP_ORDER_CREATE_REQUESTED', () => {
-    expect(swap(undefined, { type: 'SWAP_ORDER_CREATE_REQUESTED' })).toEqual({
+    expect(
+      swap(undefined, {
+        type: 'SWAP_ORDER_CREATE_REQUESTED'
+      } as swapActions.SwapAction)
+    ).toEqual({
       ...INITIAL_STATE,
       isPostingOrder: true
     });
   });
 
   it('should handle SWAP_ORDER_CREATE_FAILED', () => {
-    expect(swap(undefined, { type: 'SWAP_ORDER_CREATE_FAILED' })).toEqual({
+    expect(
+      swap(undefined, {
+        type: 'SWAP_ORDER_CREATE_FAILED'
+      } as swapActions.SwapAction)
+    ).toEqual({
       ...INITIAL_STATE,
       isPostingOrder: false
     });
@@ -166,7 +172,9 @@ describe('swap reducer', () => {
 
   it('should handle SWAP_LOAD_BITY_RATES_REQUESTED', () => {
     expect(
-      swap(undefined, { type: 'SWAP_LOAD_BITY_RATES_REQUESTED' })
+      swap(undefined, {
+        type: 'SWAP_LOAD_BITY_RATES_REQUESTED'
+      } as swapActions.SwapAction)
     ).toEqual({
       ...INITIAL_STATE,
       isFetchingRates: true
@@ -174,7 +182,11 @@ describe('swap reducer', () => {
   });
 
   it('should handle SWAP_STOP_LOAD_BITY_RATES', () => {
-    expect(swap(undefined, { type: 'SWAP_STOP_LOAD_BITY_RATES' })).toEqual({
+    expect(
+      swap(undefined, {
+        type: 'SWAP_STOP_LOAD_BITY_RATES'
+      } as swapActions.SwapAction)
+    ).toEqual({
       ...INITIAL_STATE,
       isFetchingRates: false
     });

spec/reducers/wallet.spec.ts

@@ -1,15 +1,18 @@
 import { wallet, INITIAL_STATE } from 'reducers/wallet';
 import * as walletActions from 'actions/wallet';
 import Big from 'bignumber.js';
-import { Ether } from 'libs/units';
 
 describe('wallet reducer', () => {
-  it('should return the initial state', () => {
-    expect(wallet(undefined, {})).toEqual(INITIAL_STATE);
-  });
-
   it('should handle WALLET_SET', () => {
-    const walletInstance = { wallet: true };
+    const doSomething = new Promise<string>(resolve => {
+      setTimeout(() => resolve('Success'), 1000);
+    });
+
+    const walletInstance = {
+      getAddress: () => doSomething,
+      signRawTransaction: () => doSomething
+    };
+
     expect(wallet(undefined, walletActions.setWallet(walletInstance))).toEqual({
       ...INITIAL_STATE,
       inst: walletInstance,

spec/utils/formatters.spec.ts

@@ -25,15 +25,18 @@ describe('formatNumber', () => {
   const pairs = [
     {
       input: new Big('0.0127491'),
-      output: '0.013'
+      output: '0.013',
+      digits: undefined
     },
     {
       input: new Big('21.87468421'),
-      output: '21.875'
+      output: '21.875',
+      digits: undefined
     },
     {
       input: new Big(0),
-      output: '0'
+      output: '0',
+      digits: undefined
     },
     {
       input: new Big('354.4728173'),
@@ -48,7 +51,7 @@ describe('formatNumber', () => {
   ];
 
   pairs.forEach(pair => {
-    const digits = pair.digits === undefined ? 'default' : pair.digits;
+    const digits = pair.digits;
     it(`should convert ${pair.input.toString()} to ${pair.output} when using ${digits} digits`, () => {
       expect(formatNumber(pair.input, pair.digits)).toEqual(pair.output);
     });

spec/utils/localStorage.spec.ts

@@ -1,4 +1,3 @@
-import LocalStorageMock from '../mocks/localStorage';
 import {
   loadState,
   saveState,
@@ -6,15 +5,15 @@ import {
   REDUX_STATE
 } from '../../common/utils/localStorage';
 
-window.localStorage = new LocalStorageMock();
-
 describe('saveState', () => {
   it('should serialize and persist state to local storage under key: "REDUX_STATE"', () => {
     const persistMe = {
       foo: 'bar'
     };
     saveState(persistMe);
-    expect(JSON.parse(localStorage.getItem(REDUX_STATE))).toEqual(persistMe);
+    expect(JSON.parse(localStorage.getItem(REDUX_STATE) as string)).toEqual(
+      persistMe
+    );
   });
 });
 

spec/utils/shallowWithStore.ts

@@ -0,0 +1,10 @@
+import { shallow } from 'enzyme';
+
+const shallowWithStore = (component, store) => {
+  const context = {
+    store
+  };
+  return shallow(component, { context });
+};
+
+export default shallowWithStore;

tsconfig.json

@@ -17,6 +17,7 @@
   },
   "include": [
     "./common/",
+    "spec",
     "./node_modules/types-rlp/index.d.ts",
     "./node_modules/types-bn/index.d.ts"
   ],