1 files changed, 68 insertions, 0 deletions
diff --git a/gnu/llvm/unittests/Support/StreamingMemoryObjectTest.cpp b/gnu/llvm/unittests/Support/StreamingMemoryObjectTest.cpp
new file mode 100644
index 00000000000..836dfa9084f
--- /dev/null
+++ b/gnu/llvm/unittests/Support/StreamingMemoryObjectTest.cpp
@@ -0,0 +1,68 @@
+//===- unittests/Support/StreamingMemoryObjectTest.cpp --------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/StreamingMemoryObject.h"
+#include "gtest/gtest.h"
+#include <string.h>
+
+using namespace llvm;
+
+namespace {
+
+class NullDataStreamer : public DataStreamer {
+  size_t GetBytes(unsigned char *Buffer, size_t Length) override {
+    memset(Buffer, 0, Length);
+    return Length;
+  }
+};
+
+class BufferStreamer : public DataStreamer {
+  StringRef Buffer;
+
+public:
+  BufferStreamer(StringRef Buffer) : Buffer(Buffer) {}
+  size_t GetBytes(unsigned char *OutBuffer, size_t Length) override {
+    if (Length >= Buffer.size())
+      Length = Buffer.size();
+
+    std::copy(Buffer.begin(), Buffer.begin() + Length, OutBuffer);
+    Buffer = Buffer.drop_front(Length);
+    return Length;
+  }
+};
+
+TEST(StreamingMemoryObjectTest, isValidAddress) {
+  auto DS = make_unique<NullDataStreamer>();
+  StreamingMemoryObject O(std::move(DS));
+  EXPECT_TRUE(O.isValidAddress(32 * 1024));
+}
+
+TEST(StreamingMemoryObjectTest, setKnownObjectSize) {
+  auto DS = make_unique<NullDataStreamer>();
+  StreamingMemoryObject O(std::move(DS));
+  uint8_t Buf[32];
+  EXPECT_EQ(16u, O.readBytes(Buf, 16, 0));
+  O.setKnownObjectSize(24);
+  EXPECT_EQ(8u, O.readBytes(Buf, 16, 16));
+}
+
+TEST(StreamingMemoryObjectTest, getPointer) {
+  uint8_t InputBuffer[] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};
+  StreamingMemoryObject O(make_unique<BufferStreamer>(StringRef(
+      reinterpret_cast<const char *>(InputBuffer), sizeof(InputBuffer))));
+
+  EXPECT_TRUE(std::equal(InputBuffer + 1, InputBuffer + 2, O.getPointer(1, 2)));
+  EXPECT_TRUE(std::equal(InputBuffer + 3, InputBuffer + 7, O.getPointer(3, 4)));
+  EXPECT_TRUE(std::equal(InputBuffer + 4, InputBuffer + 8, O.getPointer(4, 5)));
+  EXPECT_TRUE(std::equal(InputBuffer, InputBuffer + 8, O.getPointer(0, 20)));
+}
+
+} // end namespace