diff --git a/package.json b/package.json
index 791de96a81..3fcd8992cf 100644
--- a/package.json
+++ b/package.json
@@ -182,6 +182,7 @@
     "nightwatch_local_publishContract": "nightwatch ./test-browser/tests/publishContract.js --config nightwatch.js --env chrome ",
     "nightwatch_local_generalSettings": "nightwatch ./test-browser/tests/generalSettings.js --config nightwatch.js --env chrome ",
     "nightwatch_local_fileExplorer": "nightwatch ./test-browser/tests/fileExplorer.js --config nightwatch.js --env chrome ",
+    "nightwatch_local_debugger": "nightwatch ./test-browser/tests/debugger.js --config nightwatch.js --env chrome ",
     "onchange": "onchange build/app.js -- npm-run-all lint",
     "prepublish": "mkdirp build; npm-run-all -ls downloadsolc_root build",
     "remixd": "remixd -s ./contracts --remix-ide http://127.0.0.1:8080",
diff --git a/src/app/editor/editor.js b/src/app/editor/editor.js
index 976d242d43..d418e48c16 100644
--- a/src/app/editor/editor.js
+++ b/src/app/editor/editor.js
@@ -91,7 +91,7 @@ class Editor extends Plugin {
     }
 
     // Editor Setup
-    const el = yo`<div id="input"></div>`
+    const el = yo`<div id="input" data-id="editorInput"></div>`
     this.editor = ace.edit(el)
 
     ace.acequire('ace/ext/language_tools')
diff --git a/src/app/tabs/debugger/debuggerUI/ButtonNavigator.js b/src/app/tabs/debugger/debuggerUI/ButtonNavigator.js
index d65d815eef..8c03ae4aa7 100644
--- a/src/app/tabs/debugger/debuggerUI/ButtonNavigator.js
+++ b/src/app/tabs/debugger/debuggerUI/ButtonNavigator.js
@@ -47,15 +47,15 @@ ButtonNavigator.prototype.render = function () {
   var view = yo`<div class="${css.buttons}">
     <div class="${css.stepButtons} btn-group p-1">
       <button id='overback' class='btn btn-primary btn-sm ${css.navigator} ${css.stepButton} fas fa-reply' title='Step over back' onclick=${function () { self.event.trigger('stepOverBack') }} disabled=${this.overBackDisabled} ></button>
-      <button id='intoback' class='btn btn-primary btn-sm ${css.navigator} ${css.stepButton} fas fa-level-up-alt' title='Step back' onclick=${function () { self.event.trigger('stepIntoBack') }} disabled=${this.intoBackDisabled} ></button>
-      <button id='intoforward' class='btn btn-primary btn-sm ${css.navigator} ${css.stepButton} fas fa-level-down-alt' title='Step into' onclick=${function () { self.event.trigger('stepIntoForward') }} disabled=${this.intoForwardDisabled} ></button>
+      <button id='intoback' data-id="buttonNavigatorIntoBack" class='btn btn-primary btn-sm ${css.navigator} ${css.stepButton} fas fa-level-up-alt' title='Step back' onclick=${function () { self.event.trigger('stepIntoBack') }} disabled=${this.intoBackDisabled} ></button>
+      <button id='intoforward' data-id="buttonNavigatorIntoForward" class='btn btn-primary btn-sm ${css.navigator} ${css.stepButton} fas fa-level-down-alt' title='Step into' onclick=${function () { self.event.trigger('stepIntoForward') }} disabled=${this.intoForwardDisabled} ></button>
       <button id='overforward' class='btn btn-primary btn-sm ${css.navigator} ${css.stepButton} fas fa-share' title='Step over forward'onclick=${function () { self.event.trigger('stepOverForward') }} disabled=${this.overForwardDisabled} ></button>
     </div>
 
     <div class="${css.jumpButtons} btn-group p-1">
-      <button class='btn btn-primary btn-sm ${css.navigator} ${css.jumpButton} fas fa-step-backward'  id='jumppreviousbreakpoint' title='Jump to the previous breakpoint' onclick=${function () { self.event.trigger('jumpPreviousBreakpoint') }} disabled=${this.jumpPreviousBreakpointDisabled} ></button>
+      <button class='btn btn-primary btn-sm ${css.navigator} ${css.jumpButton} fas fa-step-backward'  id='jumppreviousbreakpoint' data-id="buttonNavigatorJumpPreviousBreakpoint" title='Jump to the previous breakpoint' onclick=${function () { self.event.trigger('jumpPreviousBreakpoint') }} disabled=${this.jumpPreviousBreakpointDisabled} ></button>
       <button class='btn btn-primary btn-sm ${css.navigator} ${css.jumpButton} fas fa-eject' id='jumpout' title='Jump out' onclick=${function () { self.event.trigger('jumpOut') }} disabled=${this.jumpOutDisabled} ></button>
-      <button class='btn btn-primary btn-sm ${css.navigator} ${css.jumpButton} fas fa-step-forward' id='jumpnextbreakpoint' title='Jump to the next breakpoint' onclick=${function () { self.event.trigger('jumpNextBreakpoint') }} disabled=${this.jumpNextBreakpointDisabled} ></button>
+      <button class='btn btn-primary btn-sm ${css.navigator} ${css.jumpButton} fas fa-step-forward' id='jumpnextbreakpoint' data-id="buttonNavigatorJumpNextBreakpoint" title='Jump to the next breakpoint' onclick=${function () { self.event.trigger('jumpNextBreakpoint') }} disabled=${this.jumpNextBreakpointDisabled} ></button>
     </div>
     <div id='reverted' style="display:none">
       <button class='btn btn-danger btn-sm' id='jumptoexception' title='Jump to exception' class='${css.navigator} ${css.button} fas fa-exclamation-triangle' onclick=${function () { self.event.trigger('jumpToException') }} disabled=${this.jumpOutDisabled} >
diff --git a/src/app/tabs/debugger/debuggerUI/Slider.js b/src/app/tabs/debugger/debuggerUI/Slider.js
index 865dd8bcd9..d67be06dc2 100644
--- a/src/app/tabs/debugger/debuggerUI/Slider.js
+++ b/src/app/tabs/debugger/debuggerUI/Slider.js
@@ -43,7 +43,7 @@ class Slider {
   render () {
     var self = this
     var view = yo`<div>
-        <input id='slider' style='width: 100%' type='range' min=0 max=${this.max} value=0
+        <input id='slider' data-id="slider" style='width: 100%' type='range' min=0 max=${this.max} value=0
           onchange=${function () { self.onChange() }} oninput=${function () { self.onChange() }} disabled=${this.disabled} />
       </div>`
     if (!this.view) {
diff --git a/src/app/tabs/debugger/debuggerUI/vmDebugger/SolidityLocals.js b/src/app/tabs/debugger/debuggerUI/vmDebugger/SolidityLocals.js
index 35edfd81f7..592b2ef060 100644
--- a/src/app/tabs/debugger/debuggerUI/vmDebugger/SolidityLocals.js
+++ b/src/app/tabs/debugger/debuggerUI/vmDebugger/SolidityLocals.js
@@ -29,7 +29,7 @@ class SolidityLocals {
   }
 
   render () {
-    this.view = yo`<div id='soliditylocals'>${this.basicPanel.render()}</div>`
+    this.view = yo`<div id='soliditylocals' data-id="solidityLocals">${this.basicPanel.render()}</div>`
     return this.view
   }
 }
diff --git a/src/app/tabs/debugger/debuggerUI/vmDebugger/StepDetail.js b/src/app/tabs/debugger/debuggerUI/vmDebugger/StepDetail.js
index fcfa13612c..0bcc30395b 100644
--- a/src/app/tabs/debugger/debuggerUI/vmDebugger/StepDetail.js
+++ b/src/app/tabs/debugger/debuggerUI/vmDebugger/StepDetail.js
@@ -17,7 +17,7 @@ StepDetail.prototype.updateField = function (key, value) {
 }
 
 StepDetail.prototype.render = function () {
-  return yo`<div id='stepdetail' >${this.basicPanel.render()}</div>`
+  return yo`<div id='stepdetail' data-id="stepdetail">${this.basicPanel.render()}</div>`
 }
 
 module.exports = StepDetail
diff --git a/src/app/ui/multiParamManager.js b/src/app/ui/multiParamManager.js
index bf6795674a..cc8b7007c5 100644
--- a/src/app/ui/multiParamManager.js
+++ b/src/app/ui/multiParamManager.js
@@ -119,6 +119,7 @@ class MultiParamManager {
     this.basicInputField = yo`<input class="form-control"></input>`
     this.basicInputField.setAttribute('placeholder', this.inputs)
     this.basicInputField.setAttribute('title', this.inputs)
+    this.basicInputField.setAttribute('data-id', this.inputs)
 
     var onClick = () => {
       this.clickCallBack(this.funABI.inputs, this.basicInputField.value)
@@ -185,6 +186,7 @@ class MultiParamManager {
       expandedButton.classList.add('btn-info')
       funcButton.setAttribute('title', (title + ' - call'))
       funcButton.classList.add('btn-info')
+      funcButton.setAttribute('data-id', (title + ' - call'))
     } else if (this.funABI.stateMutability === 'payable' || this.funABI.payable) {
       // transact. stateMutability = payable
       expandedButton.setAttribute('title', (title + ' - transact (payable)'))
@@ -192,6 +194,7 @@ class MultiParamManager {
       expandedButton.classList.add('btn-danger')
       funcButton.setAttribute('title', (title + ' - transact (payable)'))
       funcButton.classList.add('btn-danger')
+      funcButton.setAttribute('data-id', (title + ' - transact (payable)'))
     } else {
       // transact. stateMutability = nonpayable
       expandedButton.setAttribute('title', (title + ' - transact (not payable)'))
@@ -199,6 +202,7 @@ class MultiParamManager {
       expandedButton.classList.add('btn-warning')
       funcButton.classList.add('btn-warning')
       funcButton.setAttribute('title', (title + ' - transact (not payable)'))
+      funcButton.setAttribute('data-id', (title + ' - transact (not payable)'))
     }
 
     if (this.funABI.inputs && this.funABI.inputs.length > 0) {
@@ -207,6 +211,7 @@ class MultiParamManager {
       contractProperty.classList.add(css.hasArgs)
       this.basicInputField.setAttribute('title', `'(${this.funABI.type}')`) // probably should pass name instead
       this.contractActionsContainerSingle.querySelector('i').style.visibility = 'hidden'
+      this.basicInputField.setAttribute('data-id', `'(${this.funABI.type}')`)
     } else {
       this.contractActionsContainerSingle.querySelector('i').style.visibility = 'hidden'
       this.basicInputField.style.visibility = 'hidden'
diff --git a/src/app/ui/txLogger.js b/src/app/ui/txLogger.js
index 2301ccbc06..4ab75bdc34 100644
--- a/src/app/ui/txLogger.js
+++ b/src/app/ui/txLogger.js
@@ -215,7 +215,7 @@ function renderKnownTransaction (self, data, blockchain) {
         ${checkTxStatus(data.receipt, txType)}
         ${context(self, {from, to, data}, blockchain)}
         <div class=${css.buttons}>
-          <button class="${css.debug} btn btn-primary btn-sm" onclick=${(e) => debug(e, data, self)}>Debug</div>
+          <button data-shared="txLoggerDebugButton" class="${css.debug} btn btn-primary btn-sm" onclick=${(e) => debug(e, data, self)}>Debug</div>
         </div>
         <i class="${css.arrow} fas fa-angle-down"></i>
       </div>
diff --git a/src/app/ui/universal-dapp-ui.js b/src/app/ui/universal-dapp-ui.js
index 59381cbd23..975a6a46fd 100644
--- a/src/app/ui/universal-dapp-ui.js
+++ b/src/app/ui/universal-dapp-ui.js
@@ -60,7 +60,7 @@ UniversalDAppUI.prototype.renderInstanceFromABI = function (contractABI, address
   var shortAddress = helper.shortenAddress(address)
   var title = yo`
     <div class="${css.title} alert alert-secondary">
-      <button class="btn ${css.titleExpander}" onclick="${(e) => { toggleClass(e) }}">
+      <button data-id="universalDappUiTitleExpander" class="btn ${css.titleExpander}" onclick="${(e) => { toggleClass(e) }}">
         <i class="fas fa-angle-right" aria-hidden="true"></i>
       </button>
       <div class="input-group ${css.nameNbuts}">
diff --git a/test-browser/commands/debugTransaction.js b/test-browser/commands/debugTransaction.js
new file mode 100644
index 0000000000..7ef32af5a3
--- /dev/null
+++ b/test-browser/commands/debugTransaction.js
@@ -0,0 +1,25 @@
+const EventEmitter = require('events')
+
+class debugTransaction extends EventEmitter {
+  command (index = 0) {
+    this.api.perform((done) => {
+      checkStyle(this.api, index, () => {
+        done()
+        this.emit('complete')
+      })
+    })
+    return this
+  }
+}
+
+function checkStyle (browser, index, callback) {
+  browser.pause(2000).execute(function (index) {
+    const debugBtn = document.querySelectorAll('*[data-shared="txLoggerDebugButton"]')[index]
+
+    debugBtn.click()
+  }, [index], function () {
+    callback()
+  })
+}
+
+module.exports = debugTransaction
diff --git a/test-browser/tests/debugger.js b/test-browser/tests/debugger.js
new file mode 100644
index 0000000000..65353b055f
--- /dev/null
+++ b/test-browser/tests/debugger.js
@@ -0,0 +1,115 @@
+'use strict'
+var init = require('../helpers/init')
+var sauce = require('./sauce')
+
+module.exports = {
+
+  before: function (browser, done) {
+    init(browser, done)
+  },
+
+  '@sources': function () {
+    return sources
+  },
+
+  'Should launch debugger': function (browser) {
+    browser.addFile('blah.sol', sources[0]['browser/blah.sol'])
+    .clickLaunchIcon('udapp')
+    .waitForElementPresent('*[title="Deploy - transact (not payable)"]')
+    .click('*[title="Deploy - transact (not payable)"]')
+    .debugTransaction(0)
+    .assert.containsText('*[data-id="sidePanelSwapitTitle"]', 'DEBUGGER')
+  },
+
+  'Should debug failing transaction': function (browser) {
+    browser.waitForElementVisible('*[data-id="verticalIconsKindudapp"]')
+    .clickLaunchIcon('udapp')
+    .waitForElementPresent('*[data-id="universalDappUiTitleExpander"]')
+    .click('*[data-id="universalDappUiTitleExpander"]')
+    .scrollAndClick('*[title="string name, uint256 goal"]')
+    .setValue('*[title="string name, uint256 goal"]', '"toast", 999')
+    .click('*[data-id="createProject - transact (not payable)"]')
+    .debugTransaction(1)
+    .pause(2000)
+    .scrollAndClick('*[data-id="solidityLocals"]')
+    .assert.containsText('*[data-id="solidityLocals"]', 'toast')
+    .assert.containsText('*[data-id="solidityLocals"]', '999')
+  },
+
+  'Should debug transaction using slider': function (browser) {
+    browser.waitForElementVisible('*[data-id="verticalIconsKindudapp"]')
+    .waitForElementVisible('*[data-id="slider"]')
+    .click('*[data-id="slider"]')
+    .setValue('*[data-id="slider"]', 50)
+    .pause(2000)
+    .assert.containsText('*[data-id="solidityLocals"]', 'no locals')
+    .assert.containsText('*[data-id="stepdetail"]', 'vm trace step: 92')
+  },
+
+  'Should step back and forward transaction': function (browser) {
+    browser.waitForElementVisible('*[data-id="verticalIconsKindudapp"]')
+    .waitForElementPresent('*[data-id="buttonNavigatorIntoBack"]')
+    .scrollAndClick('*[data-id="buttonNavigatorIntoBack"]')
+    .pause(2000)
+    .assert.containsText('*[data-id="stepdetail"]', 'vm trace step: 91')
+    .assert.containsText('*[data-id="stepdetail"]', 'execution step: 91')
+    .click('*[data-id="buttonNavigatorIntoForward"]')
+    .pause(2000)
+    .assert.containsText('*[data-id="stepdetail"]', 'vm trace step: 92')
+    .assert.containsText('*[data-id="stepdetail"]', 'execution step: 92')
+  },
+
+  'Should jump through breakpoints': function (browser) {
+    browser.waitForElementVisible('*[data-id="editorInput"]')
+    .click('.ace_gutter-cell:nth-of-type(10)')
+    .click('.ace_gutter-cell:nth-of-type(20)')
+    .waitForElementVisible('*[data-id="buttonNavigatorJumpPreviousBreakpoint"]')
+    .click('*[data-id="buttonNavigatorJumpPreviousBreakpoint"]')
+    .pause(2000)
+    .assert.containsText('*[data-id="stepdetail"]', 'vm trace step: 0')
+    .assert.containsText('*[data-id="stepdetail"]', 'execution step: 0')
+    .click('*[data-id="buttonNavigatorJumpNextBreakpoint"]')
+    .pause(2000)
+    .assert.containsText('*[data-id="stepdetail"]', 'vm trace step: 140')
+    .assert.containsText('*[data-id="stepdetail"]', 'execution step: 140')
+    .end()
+  },
+
+  tearDown: sauce
+}
+
+var sources = [
+  {
+    'browser/blah.sol': {
+      content: `
+    pragma solidity >=0.4.22 <0.6.0;
+
+    contract Kickstarter {
+
+        enum State { Started, Completed }
+
+        struct Project {
+            address owner;
+            string name;
+            uint goal;
+            State state;
+        }    
+
+        Project[] public projects;    
+
+        constructor() public {
+
+        }    
+
+        function createProject(string memory name, uint goal) public {
+            Project storage project = projects[projects.length];
+            project.name = name;
+            project.owner = msg.sender;
+            project.state = State.Started;
+            project.goal = goal;
+        }
+    }
+        `
+    }
+  }
+]