Issue 6822 - Report browser test errors

test/runners/webdriver.js

Index: test/runners/webdriver.js
===================================================================
--- a/test/runners/webdriver.js
+++ b/test/runners/webdriver.js
@@ -19,26 +19,27 @@
 
 function executeScript(driver, name, script, scriptName, scriptArgs)
 {
   let realScript = `let f = ${script}
                     let callback = arguments[arguments.length - 1];
                     return Promise.resolve()
                       .then(() => f(...arguments))
                       .then(() => callback());`;
-  return driver.executeScript(`window.consoleLogs = [];
-                               let oldLog = console.log;
+  return driver.executeScript(`let oldLog = console.log;
                                console.log = msg => {
-                                 window.consoleLogs.push(msg);
+                                 window._consoleLogs.log.push(msg);
                                  oldLog.call(this, msg);
                                };`)
     .then(() => driver.executeAsyncScript(realScript, scriptArgs))
-    .then(() => driver.executeScript("return window.consoleLogs;"))
+    .then(() => driver.executeScript("return window._consoleLogs;"))
     .then(result =>
     {
       console.log(`\nBrowser tests in ${name}\n`);
-      result.forEach(item => console.log(item));
+      for (let item of result.log)
+        console.log(item);
+      if (result.failures != 0)
+        return Promise.reject("Test failure");
     })
-    .then(() => driver.quit())
-  ;
+    .finally(() => driver.quit());
 }
 
 module.exports.executeScript = executeScript;