r201635 - Add an OverlayFileSystem class

[Dmitri Gribenko]

On Wed, Feb 19, 2014 at 10:06 AM, Dmitri Gribenko <gribozavr at gmail.com> wrote:
> On Wed, Feb 19, 2014 at 3:29 AM, Ben Langmuir <blangmuir at apple.com> wrote:
>> +TEST(VirtualFileSystemTest, overlay_dirs) {
>> +  IntrusiveRefCntPtr<DummyFileSystem> Lower(new DummyFileSystem());
>> +  IntrusiveRefCntPtr<DummyFileSystem> Upper(new DummyFileSystem());
>> +  IntrusiveRefCntPtr<vfs::OverlayFileSystem>
>> +    O(new vfs::OverlayFileSystem(Lower));
>> +  O->pushOverlay(Upper);
>> +
>> +  ErrorOr<vfs::Status> Status1((error_code())), Status2((error_code())),
>> +                       Status3((error_code()));
>> +
>> +  Lower->addDirectory("/lower-only");
>> +  Lower->addDirectory("/both");
>> +  Upper->addDirectory("/both");
>> +  Upper->addDirectory("/upper-only");
>> +
>> +  // non-merged paths should be the same
>> +  ASSERT_TRUE(Status1 = Lower->status("/lower-only"));
>> +  ASSERT_TRUE(Status2 = O->status("/lower-only"));
>> +  EXPECT_TRUE(Status1->equivalent(*Status2));
>> +
>> +  ASSERT_TRUE(Status1 = Lower->status("/lower-only"));
>> +  ASSERT_TRUE(Status2 = O->status("/lower-only"));
>> +  EXPECT_TRUE(Status1->equivalent(*Status2));
>> +}
>
> What was the purpose of "/both" and Status3 in this test?

Also, the second time it should probably be testing upper-only.

Dmitri

-- 
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/