add browser tests

package.json

@@ -166,6 +166,7 @@
     "nightwatch_local_transactionExecution": "nightwatch ./test-browser/tests/transactionExecution.js --config nightwatch.js --env chrome ",
     "nightwatch_local_staticAnalysis": "nightwatch ./test-browser/tests/staticAnalysis.js --config nightwatch.js --env chrome ",
     "nightwatch_local_signingMessage": "nightwatch ./test-browser/tests/signingMessage.js --config nightwatch.js --env chrome ",
+    "nightwatch_local_solidityUnittests": "nightwatch ./test-browser/tests/solidityUnittests.js --config nightwatch.js --env chrome ",
     "nightwatch_local_remixd": "nightwatch ./test-browser/tests/remix.js --config nightwatch.js --env chrome ",
     "nightwatch_local_console": "nightwatch ./test-browser/tests/console.js --config nightwatch.js --env chrome ",
     "onchange": "onchange build/app.js -- npm-run-all lint",

src/app/tabs/test-tab.js

@@ -207,7 +207,7 @@ module.exports = class TestTab extends ViewPlugin {
   }
 
   updateRunAction (currentFile) {
-    let el = yo`<button class="${css.runButton} btn btn-primary"  onclick="${this.runTests.bind(this)}">Run Tests</button>`
+    let el = yo`<button id="runTestsTabRunAction" class="${css.runButton} btn btn-primary"  onclick="${this.runTests.bind(this)}">Run Tests</button>`
     const isSolidityActive = this.appManager.isActive('solidity')
     if (!currentFile || !isSolidityActive) {
       el.setAttribute('disabled', 'disabled')
@@ -235,8 +235,8 @@ module.exports = class TestTab extends ViewPlugin {
   }
   render () {
     this.onActivationInternal()
-    this.testsOutput = yo`<div class="${css.container} m-3 border border-primary border-right-0 border-left-0 border-bottom-0"  hidden='true' id="tests"></div>`
-    this.testsSummary = yo`<div class="${css.container} border border-primary border-right-0 border-left-0 border-bottom-0" hidden='true' id="tests"></div>`
+    this.testsOutput = yo`<div class="${css.container} m-3 border border-primary border-right-0 border-left-0 border-bottom-0"  hidden='true' id="solidityUnittestsOutput"></div>`
+    this.testsSummary = yo`<div class="${css.container} border border-primary border-right-0 border-left-0 border-bottom-0" hidden='true' id="solidityUnittestsSummary"></div>`
     this.loading = yo`<span class='text-info ml-1'>Running tests...</span>`
     this.loading.hidden = true
     var el = yo`

test-browser/tests/solidityUnittests.js

@@ -0,0 +1,34 @@
+'use strict'
+var init = require('../helpers/init')
+var sauce = require('./sauce')
+
+var sources = []
+
+module.exports = {
+  before: function (browser, done) {
+    init(browser, done)
+  },
+  '@sources': function () {
+    return sources
+  },
+  'Solidity Unittests': function (browser) {
+    runTests(browser)
+  },
+  tearDown: sauce
+}
+
+function runTests (browser) {
+  browser
+    .waitForElementVisible('#icon-panel', 10000)
+    .click('#icon-panel div[plugin="pluginManager"]')
+    .scrollAndClick('#pluginManager article[id="remixPluginManagerListItem_solidityUnitTesting"] button')
+    .clickLaunchIcon('fileExplorers')
+    .switchFile('browser/ballot.sol')
+    .clickLaunchIcon('solidityUnitTesting')
+    .scrollAndClick('#runTestsTabRunAction')
+    .waitForElementPresent('#solidityUnittestsOutput div[class^="testPass"]')
+    .assert.containsText('#solidityUnittestsOutput', `browser/ballot_test.sol (test3)
+    ✓ (Check winning proposal)
+    ✓ (Check winnin proposal with return value)`)
+    .end()
+}