Spelling fixes e to i.

runtime/observatory/tests/service/test_helper.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test_helper;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'package:observatory/service_io.dart';
@@ skipping 371 matching lines @@
         }
       });
     }
     return await completer.future;
   }
 }
 
 /// Runs [tests] in sequence, each of which should take an [Isolate] and
 /// return a [Future]. Code for setting up state can run before and/or
 /// concurrently with the tests. Uses [mainArgs] to determine whether
-/// to run tests or testee in this invokation of the script.
+/// to run tests or testee in this invocation of the script.
 Future runIsolateTests(List<String> mainArgs, List<IsolateTest> tests,
     {testeeBefore(),
     testeeConcurrent(),
     bool pause_on_start: false,
     bool pause_on_exit: false,
     bool verbose_vm: false,
     bool pause_on_unhandled_exceptions: false,
     bool testeeControlsServer: false,
     bool useAuthToken: false,
     List<String> extraArgs}) async {
@@ skipping 14 matching lines @@
         verbose_vm: verbose_vm,
         pause_on_unhandled_exceptions: pause_on_unhandled_exceptions,
         testeeControlsServer: testeeControlsServer,
         useAuthToken: useAuthToken);
   }
 }
 
 /// Runs [tests] in sequence, each of which should take an [Isolate] and
 /// return a [Future]. Code for setting up state can run before and/or
 /// concurrently with the tests. Uses [mainArgs] to determine whether
-/// to run tests or testee in this invokation of the script.
+/// to run tests or testee in this invocation of the script.
 ///
 /// This is a special version of this test harness specifically for the
 /// pause_on_unhandled_exceptions_test, which cannot properly function
 /// in an async context (because exceptions are *always* handled in async
 /// functions).
 void runIsolateTestsSynchronous(List<String> mainArgs, List<IsolateTest> tests,
     {void testeeBefore(),
     void testeeConcurrent(),
     bool pause_on_start: false,
     bool pause_on_exit: false,
@@ skipping 15 matching lines @@
         pause_on_start: pause_on_start,
         pause_on_exit: pause_on_exit,
         verbose_vm: verbose_vm,
         pause_on_unhandled_exceptions: pause_on_unhandled_exceptions);
   }
 }
 
 /// Runs [tests] in sequence, each of which should take an [Isolate] and
 /// return a [Future]. Code for setting up state can run before and/or
 /// concurrently with the tests. Uses [mainArgs] to determine whether
-/// to run tests or testee in this invokation of the script.
+/// to run tests or testee in this invocation of the script.
 Future runVMTests(List<String> mainArgs, List<VMTest> tests,
     {testeeBefore(),
     testeeConcurrent(),
     bool pause_on_start: false,
     bool pause_on_exit: false,
     bool verbose_vm: false,
     bool pause_on_unhandled_exceptions: false,
     List<String> extraArgs}) async {
   if (_isTestee()) {
     new _ServiceTesteeRunner().run(
         testeeBefore: testeeBefore,
         testeeConcurrent: testeeConcurrent,
         pause_on_start: pause_on_start,
         pause_on_exit: pause_on_exit);
   } else {
     new _ServiceTesterRunner().run(
         mainArgs: mainArgs,
         extraArgs: extraArgs,
         vmTests: tests,
         pause_on_start: pause_on_start,
         pause_on_exit: pause_on_exit,
         verbose_vm: verbose_vm,
         pause_on_unhandled_exceptions: pause_on_unhandled_exceptions);
   }
 }