fix(ci): Inherit stdio from test process when running in CI.

CircleCI will timeout the test if it doesn't see any output for 10
minutes. When running in CI, we need to inherit stdio so we don't get
killed if the tests run slowly due to timeouts. This will also give us
more info for debugging.

Author: heathkit

scripts/test.js

@@ -144,4 +144,9 @@ executor.addCommandlineTest('node built/cli.js spec/angular2TimeoutConf.js')
       {message: 'Timed out waiting for asynchronous Angular tasks to finish'},
     ]);
 
-executor.execute();
+// When running in CI, make sure we show stdout from the tests.
+if (process.env['CI']) {
+  executor.execute(true);
+} else {
+  executor.execute();
+}

scripts/test/test_util.js

@@ -86,7 +86,7 @@ var CommandlineTest = function(command) {
           output += data;
         });
       } else {
-        test_process = child_process.spawn(args[0], args.slice(1), {stdio: 'inherit'});
+        test_process = child_process.spawn(args[0], args.slice(1), {stdio: 'inherit', stderr: 'inherit'});
       }
 
       test_process.on('error', function(err) {
@@ -202,12 +202,15 @@ exports.Executor = function() {
     return test;
   };
 
-  this.execute = function() {
+  this.execute = function(showStdio) {
     var failed = false;
 
     (function runTests(i) {
       if (i < tests.length) {
         console.log('running: ' + tests[i].command_);
+        if (showStdio) {
+          tests[i].alwaysEnableStdio();
+        }
         tests[i].run().then(function() {
           console.log('>>> \033[1;32mpass\033[0m');
         }, function(err) {