[ASTImporter] Add test for WhileStmt

Reviewers: a.sidorin, martong

Reviewed By: martong

Subscribers: rnkovacs, martong, cfe-commits

Differential Revision: https://reviews.llvm.org/D50811

llvm-svn: 339916
diff --git a/clang/test/Import/while-stmt/Inputs/F.cpp b/clang/test/Import/while-stmt/Inputs/F.cpp
new file mode 100644
index 0000000..6fd2d87
--- /dev/null
+++ b/clang/test/Import/while-stmt/Inputs/F.cpp
@@ -0,0 +1,8 @@
+void f() {
+  while (false)
+    ;
+  while (false) {
+  }
+  while (bool ini = true)
+    ;
+}