1 files changed, 220 insertions, 0 deletions
diff --git a/libunwindstack/tests/DexFileTest.cpp b/libunwindstack/tests/DexFileTest.cpp
new file mode 100644
index 0000000000..0b02c5bf18
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+++ b/libunwindstack/tests/DexFileTest.cpp
@@ -0,0 +1,220 @@
+/*
+ * 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 <sys/types.h>
+#include <unistd.h>
+
+#include <unordered_map>
+
+#include <android-base/test_utils.h>
+
+#include <unwindstack/MapInfo.h>
+#include <unwindstack/Memory.h>
+
+#include <dex/code_item_accessors-inl.h>
+#include <dex/standard_dex_file.h>
+
+#include <gtest/gtest.h>
+
+#include "DexFile.h"
+
+#include "DexFileData.h"
+#include "MemoryFake.h"
+
+namespace unwindstack {
+
+TEST(DexFileTest, from_file_open_non_exist) {
+  DexFileFromFile dex_file;
+  ASSERT_FALSE(dex_file.Open(0, "/file/does/not/exist"));
+}
+
+TEST(DexFileTest, from_file_open_too_small) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(sizeof(art::DexFile::Header) - 2,
+            static_cast<size_t>(
+                TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(art::DexFile::Header)) - 2)));
+
+  // Header too small.
+  DexFileFromFile dex_file;
+  ASSERT_FALSE(dex_file.Open(0, tf.path));
+
+  // Header correct, file too small.
+  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET));
+  ASSERT_EQ(sizeof(art::DexFile::Header), static_cast<size_t>(TEMP_FAILURE_RETRY(write(
+                                              tf.fd, kDexData, sizeof(art::DexFile::Header)))));
+  ASSERT_FALSE(dex_file.Open(0, tf.path));
+}
+
+TEST(DexFileTest, from_file_open) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(sizeof(kDexData),
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
+
+  DexFileFromFile dex_file;
+  ASSERT_TRUE(dex_file.Open(0, tf.path));
+}
+
+TEST(DexFileTest, from_file_open_non_zero_offset) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(0x100, lseek(tf.fd, 0x100, SEEK_SET));
+  ASSERT_EQ(sizeof(kDexData),
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
+
+  DexFileFromFile dex_file;
+  ASSERT_TRUE(dex_file.Open(0x100, tf.path));
+}
+
+TEST(DexFileTest, from_memory_fail_too_small_for_header) {
+  MemoryFake memory;
+
+  memory.SetMemory(0x1000, kDexData, sizeof(art::DexFile::Header) - 1);
+  DexFileFromMemory dex_file;
+
+  ASSERT_FALSE(dex_file.Open(0x1000, &memory));
+}
+
+TEST(DexFileTest, from_memory_fail_too_small_for_data) {
+  MemoryFake memory;
+
+  memory.SetMemory(0x1000, kDexData, sizeof(kDexData) - 2);
+  DexFileFromMemory dex_file;
+
+  ASSERT_FALSE(dex_file.Open(0x1000, &memory));
+}
+
+TEST(DexFileTest, from_memory_open) {
+  MemoryFake memory;
+
+  memory.SetMemory(0x1000, kDexData, sizeof(kDexData));
+  DexFileFromMemory dex_file;
+
+  ASSERT_TRUE(dex_file.Open(0x1000, &memory));
+}
+
+TEST(DexFileTest, create_using_file) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(0x500, lseek(tf.fd, 0x500, SEEK_SET));
+  ASSERT_EQ(sizeof(kDexData),
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
+
+  MemoryFake memory;
+  MapInfo info(0, 0x10000, 0, 0x5, tf.path);
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x500, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+}
+
+TEST(DexFileTest, create_using_file_non_zero_start) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(0x500, lseek(tf.fd, 0x500, SEEK_SET));
+  ASSERT_EQ(sizeof(kDexData),
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
+
+  MemoryFake memory;
+  MapInfo info(0x100, 0x10000, 0, 0x5, tf.path);
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x600, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+}
+
+TEST(DexFileTest, create_using_file_non_zero_offset) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(0x500, lseek(tf.fd, 0x500, SEEK_SET));
+  ASSERT_EQ(sizeof(kDexData),
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData)))));
+
+  MemoryFake memory;
+  MapInfo info(0x100, 0x10000, 0x200, 0x5, tf.path);
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x400, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+}
+
+TEST(DexFileTest, create_using_memory_empty_file) {
+  MemoryFake memory;
+  memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
+  MapInfo info(0x100, 0x10000, 0x200, 0x5, "");
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+}
+
+TEST(DexFileTest, create_using_memory_file_does_not_exist) {
+  MemoryFake memory;
+  memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
+  MapInfo info(0x100, 0x10000, 0x200, 0x5, "/does/not/exist");
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+}
+
+TEST(DexFileTest, create_using_memory_file_is_malformed) {
+  TemporaryFile tf;
+  ASSERT_TRUE(tf.fd != -1);
+
+  ASSERT_EQ(sizeof(kDexData) - 10,
+            static_cast<size_t>(TEMP_FAILURE_RETRY(write(tf.fd, kDexData, sizeof(kDexData) - 10))));
+
+  MemoryFake memory;
+  memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
+  MapInfo info(0x4000, 0x10000, 0x200, 0x5, "/does/not/exist");
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+
+  // Check it came from memory by clearing memory and verifying it fails.
+  memory.Clear();
+  dex_file.reset(DexFile::Create(0x4000, &memory, &info));
+  ASSERT_TRUE(dex_file == nullptr);
+}
+
+TEST(DexFileTest, get_method_not_opened) {
+  std::string method("something");
+  uint64_t method_offset = 100;
+  DexFile dex_file;
+  dex_file.GetMethodInformation(0x100, &method, &method_offset);
+  EXPECT_EQ("something", method);
+  EXPECT_EQ(100U, method_offset);
+}
+
+TEST(DexFileTest, get_method) {
+  MemoryFake memory;
+  memory.SetMemory(0x4000, kDexData, sizeof(kDexData));
+  MapInfo info(0x100, 0x10000, 0x200, 0x5, "");
+  std::unique_ptr<DexFile> dex_file(DexFile::Create(0x4000, &memory, &info));
+  ASSERT_TRUE(dex_file != nullptr);
+
+  std::string method;
+  uint64_t method_offset;
+  dex_file->GetMethodInformation(0x102, &method, &method_offset);
+  EXPECT_EQ("Main.<init>", method);
+  EXPECT_EQ(2U, method_offset);
+
+  method = "not_in_a_method";
+  method_offset = 0x123;
+  dex_file->GetMethodInformation(0x100000, &method, &method_offset);
+  EXPECT_EQ("not_in_a_method", method);
+  EXPECT_EQ(0x123U, method_offset);
+}
+
+}  // namespace unwindstack