add more tests

test-browser/commands/elementIsNotPresent.js

+const EventEmitter = require('events')
+
+class ElementIsPresent extends EventEmitter {
+  command (cssSelector) {
+    this.api.execute((cssSelector) => {
+      return !!document.querySelector(cssSelector)
+    }, [cssSelector], (result) => {
+      this.api.assert.equal(false, result.value, `${cssSelector} should not be present`)
+      this.emit('complete')
+    })
+    return this
+  }
+}
+
+module.exports = ElementIsPresent

test-browser/commands/elementIsPresent.js

+const EventEmitter = require('events')
+
+class ElementIsPresent extends EventEmitter {
+  command (cssSelector) {
+    this.api.execute((cssSelector) => {
+      return !!document.querySelector(cssSelector)
+    }, [cssSelector], (result) => {
+      this.api.assert.equal(true, result.value, `${cssSelector} should be present`)
+      this.emit('complete')
+    })
+    return this
+  }
+}
+
+module.exports = ElementIsPresent

test-browser/tests/editor.test.js

@@ -83,6 +83,28 @@ module.exports = {
     .checkElementStyle('.highlightLine40', 'background-color', 'rgb(8, 108, 181)')
     .waitForElementPresent('.highlightLine50')
     .checkElementStyle('.highlightLine50', 'background-color', 'rgb(8, 108, 181)')
+  },
+
+  'Should remove 1 highlight from source code': function (browser) {
+    browser.addFile('removeSourcehighlightScript.js', removeSourcehighlightScript)
+    .switchFile('browser/removeSourcehighlightScript.js')
+    .executeScript('remix.exeCurrent()')
+    .switchFile('browser/3_Ballot.sol')
+    .editorScroll('down', 60)
+    .elementIsNotPresent('.highlightLine32')
+    .checkElementStyle('.highlightLine40', 'background-color', 'rgb(8, 108, 181)')
+    .checkElementStyle('.highlightLine50', 'background-color', 'rgb(8, 108, 181)')
+  },
+
+  'Should remove all highlights from source code': function (browser) {
+    browser.addFile('removeAllSourcehighlightScript.js', removeAllSourcehighlightScript)
+    .switchFile('browser/removeAllSourcehighlightScript.js')
+    .executeScript('remix.exeCurrent()')
+    .switchFile('browser/3_Ballot.sol')
+    .editorScroll('down', 60)
+    .elementIsNotPresent('.highlightLine32')
+    .elementIsNotPresent('.highlightLine40')
+    .elementIsNotPresent('.highlightLine50')
     .end()
   },
 
@@ -149,3 +171,27 @@ const sourcehighlightScript = {
   })()
   `
 }
+
+const removeSourcehighlightScript = {
+  content: `
+  (async () => {
+    try {
+        await remix.call('editor', 'discardHighlightAt', 32, 'browser/3_Ballot.sol')         
+    } catch (e) {
+        console.log(e.message)
+    }
+  })()
+  `
+}
+
+const removeAllSourcehighlightScript = {
+  content: `
+  (async () => {
+    try {
+        await remix.call('editor', 'discardHighlight')         
+    } catch (e) {
+        console.log(e.message)
+    }
+  })()
+  `
+}