include tests in eslinting

package.json

@@ -12,7 +12,7 @@
     "prepare": "npm run build:all",
     "publish-all": "node scripts/publish.js",
     "start": "webpack-serve ./webpack.serve.config.js --open",
-    "lint": "eslint src",
+    "lint": "eslint src test",
     "lint:py": "flake8 --ignore=E501,F401,F841,F811 test",
     "test": "run-s -c test-unit test:py test:pyimport lint format:test lint:py",
     "test:py": "python -m unittest test.test_integration",

test/unit/Interval.test.js

@@ -1,5 +1,6 @@
 import Interval from '../../src/components/Interval.react.js';
 import React, {cloneElement, Component} from 'react';
+import PropTypes from 'prop-types';
 import omit from 'lodash/omit';
 import {mount, render} from 'enzyme';
 
@@ -40,6 +41,11 @@ class IntervalWrapper extends Component {
     }
 }
 
+IntervalWrapper.propTypes = {
+    children: PropTypes.node,
+    setProps: PropTypes.func
+};
+
 const intervalLength = 50;
 
 // The following number should be large enough for any
@@ -127,11 +133,16 @@ describe('Delayed setProps provisioning', () => {
                 ...omit(this.props, ['children']),
                 setProps: this.state.setPropsProvided
                     ? this.props.setProps
-                    : undefined,
+                    : null,
             });
         }
     }
 
+    DelayedSetPropsWrapper.propTypes = {
+        children: PropTypes.node,
+        setProps: PropTypes.func
+    };
+
     const makeSut = () => {
         const results = {
             nIntervals: 0,
@@ -222,6 +233,12 @@ describe('Usage of disabled = true', () => {
         }
     }
 
+    DisabledTestingIntervalWrapper.propTypes = {
+        children: PropTypes.node,
+        setProps: PropTypes.func,
+        handleInterval: PropTypes.func
+    };
+
     const makeSut = handleInterval => {
         const results = {
             nIntervals: 0,

test/unit/Tabs.test.js

@@ -1,7 +1,7 @@
 import Tabs from '../../src/components/Tabs.react.js';
 import Tab from '../../src/components/Tab.react.js';
 import React from 'react';
-import {mount, shallow, render} from 'enzyme';
+import {mount, render} from 'enzyme';
 
 test('Tabs render', () => {
     const tabs = render(