Mojo: re-organize public tests

mojo/public/tests/system/core_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file tests the C API.
 
 #include "mojo/public/system/core.h"
 
 #include <string.h>
 
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace {
 
-TEST(SystemTest, GetTimeTicksNow) {
+TEST(CoreTest, GetTimeTicksNow) {
   const MojoTimeTicks start = MojoGetTimeTicksNow();
   EXPECT_NE(static_cast<MojoTimeTicks>(0), start)
       << "MojoGetTimeTicksNow should return nonzero value";
 }
 
-TEST(SystemTest, Basic) {
+TEST(CoreTest, Basic) {
   MojoHandle h_0;
   MojoWaitFlags wf;
   char buffer[10] = { 0 };
   uint32_t buffer_size;
 
   // The only handle that's guaranteed to be invalid is |MOJO_HANDLE_INVALID|.
   EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT, MojoClose(MOJO_HANDLE_INVALID));
   EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
             MojoWait(MOJO_HANDLE_INVALID, MOJO_WAIT_FLAG_EVERYTHING, 1000000));
   h_0 = MOJO_HANDLE_INVALID;
@@ skipping 69 matching lines @@
                      MOJO_WAIT_FLAG_READABLE | MOJO_WAIT_FLAG_WRITABLE,
                      1000));
 
   EXPECT_EQ(MOJO_RESULT_OK, MojoClose(h_1));
 }
 
 // TODO(vtl): Add multi-threaded tests.
 
 }  // namespace
 }  // namespace mojo