1 files changed, 115 insertions, 0 deletions
diff --git a/unittests/Support/LineIteratorTest.cpp b/unittests/Support/LineIteratorTest.cpp
new file mode 100644
index 0000000..18f3fa9
--- /dev/null
+++ b/unittests/Support/LineIteratorTest.cpp
@@ -0,0 +1,115 @@
+//===- LineIterator.cpp - Unit tests --------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/LineIterator.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace llvm::sys;
+
+namespace {
+
+TEST(LineIteratorTest, Basic) {
+  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("line 1\n"
+                                                                  "line 2\n"
+                                                                  "line 3"));
+
+  line_iterator I = line_iterator(*Buffer), E;
+
+  EXPECT_FALSE(I.is_at_eof());
+  EXPECT_NE(E, I);
+
+  EXPECT_EQ("line 1", *I);
+  EXPECT_EQ(1, I.line_number());
+  ++I;
+  EXPECT_EQ("line 2", *I);
+  EXPECT_EQ(2, I.line_number());
+  ++I;
+  EXPECT_EQ("line 3", *I);
+  EXPECT_EQ(3, I.line_number());
+  ++I;
+
+  EXPECT_TRUE(I.is_at_eof());
+  EXPECT_EQ(E, I);
+}
+
+TEST(LineIteratorTest, CommentSkipping) {
+  std::unique_ptr<MemoryBuffer> Buffer(
+      MemoryBuffer::getMemBuffer("line 1\n"
+                                 "line 2\n"
+                                 "# Comment 1\n"
+                                 "line 4\n"
+                                 "# Comment 2"));
+
+  line_iterator I = line_iterator(*Buffer, '#'), E;
+
+  EXPECT_FALSE(I.is_at_eof());
+  EXPECT_NE(E, I);
+
+  EXPECT_EQ("line 1", *I);
+  EXPECT_EQ(1, I.line_number());
+  ++I;
+  EXPECT_EQ("line 2", *I);
+  EXPECT_EQ(2, I.line_number());
+  ++I;
+  EXPECT_EQ("line 4", *I);
+  EXPECT_EQ(4, I.line_number());
+  ++I;
+
+  EXPECT_TRUE(I.is_at_eof());
+  EXPECT_EQ(E, I);
+}
+
+TEST(LineIteratorTest, BlankSkipping) {
+  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer("\n\n\n"
+                                                                  "line 1\n"
+                                                                  "\n\n\n"
+                                                                  "line 2\n"
+                                                                  "\n\n\n"));
+
+  line_iterator I = line_iterator(*Buffer), E;
+
+  EXPECT_FALSE(I.is_at_eof());
+  EXPECT_NE(E, I);
+
+  EXPECT_EQ("line 1", *I);
+  EXPECT_EQ(4, I.line_number());
+  ++I;
+  EXPECT_EQ("line 2", *I);
+  EXPECT_EQ(8, I.line_number());
+  ++I;
+
+  EXPECT_TRUE(I.is_at_eof());
+  EXPECT_EQ(E, I);
+}
+
+TEST(LineIteratorTest, EmptyBuffers) {
+  std::unique_ptr<MemoryBuffer> Buffer(MemoryBuffer::getMemBuffer(""));
+  EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
+  EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
+
+  Buffer.reset(MemoryBuffer::getMemBuffer("\n\n\n"));
+  EXPECT_TRUE(line_iterator(*Buffer).is_at_eof());
+  EXPECT_EQ(line_iterator(), line_iterator(*Buffer));
+
+  Buffer.reset(MemoryBuffer::getMemBuffer("# foo\n"
+                                          "\n"
+                                          "# bar"));
+  EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
+  EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
+
+  Buffer.reset(MemoryBuffer::getMemBuffer("\n"
+                                          "# baz\n"
+                                          "\n"));
+  EXPECT_TRUE(line_iterator(*Buffer, '#').is_at_eof());
+  EXPECT_EQ(line_iterator(), line_iterator(*Buffer, '#'));
+}
+
+} // anonymous namespace