Resolve build bot problems in unittests/Format/FormatTest.cpp

Summary:
Make the new GetStyleWithEmptyFileName test case independent
of the file system used when running the test. Since the
test is supposed to use the fallback "Google" style we now
use a InMemoryFileSystem to make sure that we do not accidentaly
find a .clang-format file in the real file system. That could
for example happen when having the build directory inside the
llvm och clang repo (as there is a .clang-format file inside
the repos).

Reviewers: vsapsai, jolesiak, krasimir, benhamilton

Reviewed By: krasimir

Subscribers: uabelho, twoh, klimek, cfe-commits

Differential Revision: https://reviews.llvm.org/D43732

llvm-svn: 326086

1 files changed, 2 insertions, 1 deletions

diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index f87fd8481af..082f6e4864d 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -11724,7 +11724,8 @@ TEST_F(FormatTest, NoSpaceAfterSuper) {
 }
 
 TEST(FormatStyle, GetStyleWithEmptyFileName) {
-  auto Style1 = getStyle("file", "", "Google");
+  vfs::InMemoryFileSystem FS;
+  auto Style1 = getStyle("file", "", "Google", "", &FS);
   ASSERT_TRUE((bool)Style1);
   ASSERT_EQ(*Style1, getGoogleStyle());
 }