1 files changed, 89 insertions, 0 deletions
diff --git a/libunwindstack/tests/MemoryRangesTest.cpp b/libunwindstack/tests/MemoryRangesTest.cpp
new file mode 100644
index 000000000..e4e9fc4e9
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+++ b/libunwindstack/tests/MemoryRangesTest.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#include "MemoryFake.h"
+#include "MemoryRange.h"
+
+namespace unwindstack {
+
+class MemoryRangesTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    MemoryFake* memory = new MemoryFake;
+    process_memory_.reset(memory);
+    memory->SetMemoryBlock(1000, 5000, 0x15);
+    memory->SetMemoryBlock(6000, 12000, 0x26);
+    memory->SetMemoryBlock(14000, 20000, 0x37);
+    memory->SetMemoryBlock(20000, 22000, 0x48);
+
+    ranges_.reset(new MemoryRanges);
+    ranges_->Insert(new MemoryRange(process_memory_, 15000, 100, 4000));
+    ranges_->Insert(new MemoryRange(process_memory_, 10000, 2000, 2000));
+    ranges_->Insert(new MemoryRange(process_memory_, 3000, 1000, 0));
+    ranges_->Insert(new MemoryRange(process_memory_, 19000, 1000, 6000));
+    ranges_->Insert(new MemoryRange(process_memory_, 20000, 1000, 7000));
+  }
+
+  std::shared_ptr<Memory> process_memory_;
+  std::unique_ptr<MemoryRanges> ranges_;
+};
+
+TEST_F(MemoryRangesTest, read) {
+  std::vector<uint8_t> dst(2000);
+  size_t bytes = ranges_->Read(0, dst.data(), dst.size());
+  ASSERT_EQ(1000UL, bytes);
+  for (size_t i = 0; i < bytes; i++) {
+    ASSERT_EQ(0x15U, dst[i]) << "Failed at byte " << i;
+  }
+
+  bytes = ranges_->Read(2000, dst.data(), dst.size());
+  ASSERT_EQ(2000UL, bytes);
+  for (size_t i = 0; i < bytes; i++) {
+    ASSERT_EQ(0x26U, dst[i]) << "Failed at byte " << i;
+  }
+
+  bytes = ranges_->Read(4000, dst.data(), dst.size());
+  ASSERT_EQ(100UL, bytes);
+  for (size_t i = 0; i < bytes; i++) {
+    ASSERT_EQ(0x37U, dst[i]) << "Failed at byte " << i;
+  }
+}
+
+TEST_F(MemoryRangesTest, read_fail) {
+  std::vector<uint8_t> dst(4096);
+  ASSERT_EQ(0UL, ranges_->Read(1000, dst.data(), dst.size()));
+  ASSERT_EQ(0UL, ranges_->Read(5000, dst.data(), dst.size()));
+  ASSERT_EQ(0UL, ranges_->Read(8000, dst.data(), dst.size()));
+}
+
+TEST_F(MemoryRangesTest, read_across_ranges) {
+  // The MemoryRanges object does not support reading across a range,
+  // so this will only read in the first range.
+  std::vector<uint8_t> dst(4096);
+  size_t bytes = ranges_->Read(6000, dst.data(), dst.size());
+  ASSERT_EQ(1000UL, bytes);
+  for (size_t i = 0; i < bytes; i++) {
+    ASSERT_EQ(0x37U, dst[i]) << "Failed at byte " << i;
+  }
+}
+
+}  // namespace unwindstack