Revert^2 "Move some image/9patch code to androidfw"
This reverts commit 917043bc2586743afda5a21386893fa8c787800b.
Reason for revert: Roll forward with fix
Test: Automatic
Bug: 296324826
Change-Id: I42a0b48c02fd497b2174c0c65f300265202f7ab1
diff --git a/libs/androidfw/tests/FileStream_test.cpp b/libs/androidfw/tests/FileStream_test.cpp
new file mode 100644
index 0000000..9785975
--- /dev/null
+++ b/libs/androidfw/tests/FileStream_test.cpp
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2017 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 "androidfw/FileStream.h"
+#include "androidfw/StringPiece.h"
+
+#include "android-base/file.h"
+#include "android-base/macros.h"
+
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+using ::android::StringPiece;
+using ::testing::Eq;
+using ::testing::NotNull;
+using ::testing::StrEq;
+
+namespace android {
+
+TEST(FileInputStreamTest, NextAndBackup) {
+ std::string input = "this is a cool string";
+ TemporaryFile file;
+ ASSERT_THAT(TEMP_FAILURE_RETRY(write(file.fd, input.c_str(), input.size())), Eq(21));
+ lseek64(file.fd, 0, SEEK_SET);
+
+ // Use a small buffer size so that we can call Next() a few times.
+ FileInputStream in(file.release(), 10u);
+ ASSERT_FALSE(in.HadError());
+ EXPECT_THAT(in.ByteCount(), Eq(0u));
+
+ const void* buffer;
+ size_t size;
+ ASSERT_TRUE(in.Next(&buffer, &size)) << in.GetError();
+ ASSERT_THAT(size, Eq(10u));
+ ASSERT_THAT(buffer, NotNull());
+ EXPECT_THAT(in.ByteCount(), Eq(10u));
+ EXPECT_THAT(StringPiece(reinterpret_cast<const char*>(buffer), size), Eq("this is a "));
+
+ ASSERT_TRUE(in.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(10u));
+ ASSERT_THAT(buffer, NotNull());
+ EXPECT_THAT(in.ByteCount(), Eq(20u));
+ EXPECT_THAT(StringPiece(reinterpret_cast<const char*>(buffer), size), Eq("cool strin"));
+
+ in.BackUp(5u);
+ EXPECT_THAT(in.ByteCount(), Eq(15u));
+
+ ASSERT_TRUE(in.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(5u));
+ ASSERT_THAT(buffer, NotNull());
+ ASSERT_THAT(in.ByteCount(), Eq(20u));
+ EXPECT_THAT(StringPiece(reinterpret_cast<const char*>(buffer), size), Eq("strin"));
+
+ // Backup 1 more than possible. Should clamp.
+ in.BackUp(11u);
+ EXPECT_THAT(in.ByteCount(), Eq(10u));
+
+ ASSERT_TRUE(in.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(10u));
+ ASSERT_THAT(buffer, NotNull());
+ ASSERT_THAT(in.ByteCount(), Eq(20u));
+ EXPECT_THAT(StringPiece(reinterpret_cast<const char*>(buffer), size), Eq("cool strin"));
+
+ ASSERT_TRUE(in.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(1u));
+ ASSERT_THAT(buffer, NotNull());
+ ASSERT_THAT(in.ByteCount(), Eq(21u));
+ EXPECT_THAT(StringPiece(reinterpret_cast<const char*>(buffer), size), Eq("g"));
+
+ EXPECT_FALSE(in.Next(&buffer, &size));
+ EXPECT_FALSE(in.HadError());
+}
+
+TEST(FileOutputStreamTest, NextAndBackup) {
+ const std::string input = "this is a cool string";
+
+ TemporaryFile file;
+
+ FileOutputStream out(file.fd, 10u);
+ ASSERT_FALSE(out.HadError());
+ EXPECT_THAT(out.ByteCount(), Eq(0u));
+
+ void* buffer;
+ size_t size;
+ ASSERT_TRUE(out.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(10u));
+ ASSERT_THAT(buffer, NotNull());
+ EXPECT_THAT(out.ByteCount(), Eq(10u));
+ memcpy(reinterpret_cast<char*>(buffer), input.c_str(), size);
+
+ ASSERT_TRUE(out.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(10u));
+ ASSERT_THAT(buffer, NotNull());
+ EXPECT_THAT(out.ByteCount(), Eq(20u));
+ memcpy(reinterpret_cast<char*>(buffer), input.c_str() + 10u, size);
+
+ ASSERT_TRUE(out.Next(&buffer, &size));
+ ASSERT_THAT(size, Eq(10u));
+ ASSERT_THAT(buffer, NotNull());
+ EXPECT_THAT(out.ByteCount(), Eq(30u));
+ reinterpret_cast<char*>(buffer)[0] = input[20u];
+ out.BackUp(size - 1);
+ EXPECT_THAT(out.ByteCount(), Eq(21u));
+
+ ASSERT_TRUE(out.Flush());
+
+ lseek64(file.fd, 0, SEEK_SET);
+
+ std::string actual;
+ ASSERT_TRUE(android::base::ReadFdToString(file.fd, &actual));
+ EXPECT_THAT(actual, StrEq(input));
+}
+
+} // namespace android