Make SourceMgr::PrintMessage() testable and add unit tests
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191558 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/SourceMgrTest.cpp b/unittests/Support/SourceMgrTest.cpp
new file mode 100644
index 0000000..9bc0cf6
--- /dev/null
+++ b/unittests/Support/SourceMgrTest.cpp
@@ -0,0 +1,162 @@
+//===- unittests/Support/SourceMgrTest.cpp - SourceMgr 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/SourceMgr.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+namespace {
+
+class SourceMgrTest : public testing::Test {
+public:
+ SourceMgr SM;
+ unsigned MainBufferID;
+ std::string Output;
+
+ void setMainBuffer(StringRef Text, StringRef BufferName) {
+ MemoryBuffer *MainBuffer = MemoryBuffer::getMemBuffer(Text, BufferName);
+ MainBufferID = SM.AddNewSourceBuffer(MainBuffer, llvm::SMLoc());
+ }
+
+ SMLoc getLoc(unsigned Offset) {
+ return SMLoc::getFromPointer(
+ SM.getMemoryBuffer(MainBufferID)->getBufferStart() + Offset);
+ }
+
+ SMRange getRange(unsigned Offset, unsigned Length) {
+ return SMRange(getLoc(Offset), getLoc(Offset + Length));
+ }
+
+ void printMessage(SMLoc Loc, SourceMgr::DiagKind Kind,
+ const Twine &Msg, ArrayRef<SMRange> Ranges,
+ ArrayRef<SMFixIt> FixIts) {
+ raw_string_ostream OS(Output);
+ SM.PrintMessage(OS, Loc, Kind, Msg, Ranges, FixIts);
+ }
+};
+
+} // unnamed namespace
+
+TEST_F(SourceMgrTest, BasicError) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", None, None);
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ " ^\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, BasicWarning) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Warning, "message", None, None);
+
+ EXPECT_EQ("file.in:1:5: warning: message\n"
+ "aaa bbb\n"
+ " ^\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, BasicNote) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Note, "message", None, None);
+
+ EXPECT_EQ("file.in:1:5: note: message\n"
+ "aaa bbb\n"
+ " ^\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, LocationAtEndOfLine) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(6), SourceMgr::DK_Error, "message", None, None);
+
+ EXPECT_EQ("file.in:1:7: error: message\n"
+ "aaa bbb\n"
+ " ^\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, LocationAtNewline) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(7), SourceMgr::DK_Error, "message", None, None);
+
+ EXPECT_EQ("file.in:1:8: error: message\n"
+ "aaa bbb\n"
+ " ^\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, BasicRange) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", getRange(4, 3), None);
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ " ^~~\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, RangeWithTab) {
+ setMainBuffer("aaa\tbbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", getRange(3, 3), None);
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ " ~~~~~^~\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, MultiLineRange) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", getRange(4, 7), None);
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ " ^~~\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, MultipleRanges) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ SMRange Ranges[] = { getRange(0, 3), getRange(4, 3) };
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", Ranges, None);
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ "~~~ ^~~\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, OverlappingRanges) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ SMRange Ranges[] = { getRange(0, 3), getRange(2, 4) };
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", Ranges, None);
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ "~~~~^~\n",
+ Output);
+}
+
+TEST_F(SourceMgrTest, BasicFixit) {
+ setMainBuffer("aaa bbb\nccc ddd\n", "file.in");
+ printMessage(getLoc(4), SourceMgr::DK_Error, "message", None,
+ makeArrayRef(SMFixIt(getRange(4, 3), "zzz")));
+
+ EXPECT_EQ("file.in:1:5: error: message\n"
+ "aaa bbb\n"
+ " ^~~\n"
+ " zzz\n",
+ Output);
+}
+