Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/unittests/DebugInfo/PDB/StringTableBuilderTest.cpp

@@ -0,0 +1,55 @@
+//===- StringTableBuilderTest.cpp -----------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/Native/PDBStringTable.h"
+#include "llvm/DebugInfo/PDB/Native/PDBStringTableBuilder.h"
+#include "llvm/Support/BinaryByteStream.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/BinaryStreamWriter.h"
+#include "llvm/Testing/Support/Error.h"
+
+#include "gtest/gtest.h"
+
+using namespace llvm;
+using namespace llvm::pdb;
+using namespace llvm::support;
+
+namespace {
+class StringTableBuilderTest : public ::testing::Test {};
+}
+
+TEST_F(StringTableBuilderTest, Simple) {
+  // Create /names table contents.
+  PDBStringTableBuilder Builder;
+  EXPECT_EQ(1U, Builder.insert("foo"));
+  EXPECT_EQ(5U, Builder.insert("bar"));
+  EXPECT_EQ(1U, Builder.insert("foo"));
+  EXPECT_EQ(9U, Builder.insert("baz"));
+
+  std::vector<uint8_t> Buffer(Builder.calculateSerializedSize());
+  MutableBinaryByteStream OutStream(Buffer, little);
+  BinaryStreamWriter Writer(OutStream);
+  EXPECT_THAT_ERROR(Builder.commit(Writer), Succeeded());
+
+  // Reads the contents back.
+  BinaryByteStream InStream(Buffer, little);
+  BinaryStreamReader Reader(InStream);
+  PDBStringTable Table;
+  EXPECT_THAT_ERROR(Table.reload(Reader), Succeeded());
+
+  EXPECT_EQ(3U, Table.getNameCount());
+  EXPECT_EQ(1U, Table.getHashVersion());
+
+  EXPECT_THAT_EXPECTED(Table.getStringForID(1), HasValue("foo"));
+  EXPECT_THAT_EXPECTED(Table.getStringForID(5), HasValue("bar"));
+  EXPECT_THAT_EXPECTED(Table.getStringForID(9), HasValue("baz"));
+  EXPECT_THAT_EXPECTED(Table.getIDForString("foo"), HasValue(1U));
+  EXPECT_THAT_EXPECTED(Table.getIDForString("bar"), HasValue(5U));
+  EXPECT_THAT_EXPECTED(Table.getIDForString("baz"), HasValue(9U));
+}