Remove unncessary whitespace when triggered on empty line.

With the cursor located at "I", clang-format would not do anything to:

int a;

   I

  int b;

With this patch, it reduces the number of empty lines as necessary, and
removes unnecessary whitespace. It does not change/reformat "int a;" or
"int b;".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176650 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index eafc4c8512..1e92592488 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -194,6 +194,13 @@ TEST_F(FormatTest, FormatsCorrectRegionForLeadingWhitespace) {
                    25, 0, getLLVMStyleWithColumns(12)));
 }
 
+TEST_F(FormatTest, RemovesWhitespaceWhenTriggeredOnEmptyLine) {
+  EXPECT_EQ("int  a;\n\n int b;",
+            format("int  a;\n  \n\n int b;", 7, 0, getLLVMStyle()));
+  EXPECT_EQ("int  a;\n\n int b;",
+            format("int  a;\n  \n\n int b;", 9, 0, getLLVMStyle()));
+}
+
 TEST_F(FormatTest, ReformatsMovedLines) {
   EXPECT_EQ(
       "template <typename T> T *getFETokenInfo() const {\n"