fix(browser): allow updating total specs count (#3264)

* fix(browser): allow updating total specs count

This change allows providing the total specs count after the tests have
been started.
The count will be updated in case it has been provided already.
This can be uselful for some adapters where the total specs count can
not be determined before starting the first test.

fix onInfo test case, add new test for total update

Author: matz3

lib/browser.js

@@ -60,6 +60,10 @@ class Browser {
 
     if (helper.isDefined(info.log)) {
       this.emitter.emit('browser_log', this, info.log, info.type)
+    } else if (helper.isDefined(info.total)) {
+      if (this.state === EXECUTING) {
+        this.lastResult.total = info.total
+      }
     } else if (!helper.isDefined(info.dump)) {
       this.emitter.emit('browser_info', this, info)
     }

test/unit/browser.spec.js

@@ -123,12 +123,19 @@ describe('Browser', () => {
       expect(spy).to.have.been.calledWith(browser, infoData)
     })
 
-    it('should ignore if browser not executing', () => {
+    it('should update total specs count during execution', () => {
+      browser.state = Browser.STATE_EXECUTING
+      browser.onInfo({total: 20})
+
+      expect(browser.lastResult.total).to.equal(20)
+    })
+
+    it('should ignore update total if not executing', () => {
       const spy = sinon.spy()
-      emitter.on('browser_dump', spy)
+      emitter.on('browser_log', spy)
+      emitter.on('browser_info', spy)
 
       browser.state = Browser.STATE_CONNECTED
-      browser.onInfo({dump: 'something'})
       browser.onInfo({total: 20})
 
       expect(browser.lastResult.total).to.equal(0)