libandroidfw_tests: package test data correctly

- Convert to use soong, which allows bundling test data with benchmarks.
- Also separate libandroidfw_benchmarks so that it doesn't depend
on gtest.

Test: manual
Change-Id: I45bd222fafa87172c77b7f5bb2a7a89ddca72361
diff --git a/libs/androidfw/tests/TestHelpers.cpp b/libs/androidfw/tests/TestHelpers.cpp
index 1e763a5..9e320a2 100644
--- a/libs/androidfw/tests/TestHelpers.cpp
+++ b/libs/androidfw/tests/TestHelpers.cpp
@@ -16,67 +16,22 @@
 
 #include "TestHelpers.h"
 
-#include <libgen.h>
-#include <unistd.h>
-
-#include <memory>
-#include <string>
-
-#include "android-base/file.h"
-#include "android-base/logging.h"
-#include "android-base/strings.h"
 #include "ziparchive/zip_archive.h"
 
+using ::testing::AssertionFailure;
+using ::testing::AssertionResult;
+using ::testing::AssertionSuccess;
+
 namespace android {
 
-static std::string sTestDataPath;
-
-// Extract the directory of the current executable path.
-static std::string GetExecutableDir() {
-  const std::string path = base::GetExecutablePath();
-  std::unique_ptr<char, decltype(&std::free)> mutable_path = {strdup(path.c_str()), std::free};
-  std::string executable_dir = dirname(mutable_path.get());
-  return executable_dir;
-}
-
-void InitializeTest(int* argc, char** argv) {
-  // Set the default test data path to be the executable path directory.
-  SetTestDataPath(GetExecutableDir());
-
-  for (int i = 1; i < *argc; i++) {
-    const std::string arg = argv[i];
-    if (base::StartsWith(arg, "--testdata=")) {
-      SetTestDataPath(arg.substr(strlen("--testdata=")));
-      for (int j = i; j != *argc; j++) {
-        argv[j] = argv[j + 1];
-      }
-      --(*argc);
-      --i;
-    } else if (arg == "-h" || arg == "--help") {
-      std::cerr << "\nAdditional options specific to this test:\n"
-                   "  --testdata=[PATH]\n"
-                   "      Specify the location of test data used within the tests.\n";
-      exit(1);
-    }
-  }
-}
-
-void SetTestDataPath(const std::string& path) { sTestDataPath = path; }
-
-const std::string& GetTestDataPath() {
-  CHECK(!sTestDataPath.empty()) << "no test data path set.";
-  return sTestDataPath;
-}
-
-::testing::AssertionResult ReadFileFromZipToString(const std::string& zip_path,
-                                                   const std::string& file,
-                                                   std::string* out_contents) {
+AssertionResult ReadFileFromZipToString(const std::string& zip_path, const std::string& file,
+                                        std::string* out_contents) {
   out_contents->clear();
   ::ZipArchiveHandle handle;
   int32_t result = OpenArchive(zip_path.c_str(), &handle);
   if (result != 0) {
-    return ::testing::AssertionFailure() << "Failed to open zip '" << zip_path
-                                         << "': " << ::ErrorCodeString(result);
+    return AssertionFailure() << "Failed to open zip '" << zip_path
+                              << "': " << ::ErrorCodeString(result);
   }
 
   ::ZipString name(file.c_str());
@@ -84,8 +39,8 @@
   result = ::FindEntry(handle, name, &entry);
   if (result != 0) {
     ::CloseArchive(handle);
-    return ::testing::AssertionFailure() << "Could not find file '" << file << "' in zip '"
-                                         << zip_path << "' : " << ::ErrorCodeString(result);
+    return AssertionFailure() << "Could not find file '" << file << "' in zip '" << zip_path
+                              << "' : " << ::ErrorCodeString(result);
   }
 
   out_contents->resize(entry.uncompressed_length);
@@ -94,41 +49,36 @@
       out_contents->size());
   if (result != 0) {
     ::CloseArchive(handle);
-    return ::testing::AssertionFailure() << "Failed to extract file '" << file << "' from zip '"
-                                         << zip_path << "': " << ::ErrorCodeString(result);
+    return AssertionFailure() << "Failed to extract file '" << file << "' from zip '" << zip_path
+                              << "': " << ::ErrorCodeString(result);
   }
 
   ::CloseArchive(handle);
-  return ::testing::AssertionSuccess();
+  return AssertionSuccess();
 }
 
-::testing::AssertionResult IsStringEqual(const ResTable& table, uint32_t resource_id,
-                                         const char* expected_str) {
+AssertionResult IsStringEqual(const ResTable& table, uint32_t resource_id,
+                              const char* expected_str) {
   Res_value val;
   ssize_t block = table.getResource(resource_id, &val, MAY_NOT_BE_BAG);
   if (block < 0) {
-    return ::testing::AssertionFailure() << "could not find resource";
+    return AssertionFailure() << "could not find resource";
   }
 
   if (val.dataType != Res_value::TYPE_STRING) {
-    return ::testing::AssertionFailure() << "resource is not a string";
+    return AssertionFailure() << "resource is not a string";
   }
 
   const ResStringPool* pool = table.getTableStringBlock(block);
   if (pool == NULL) {
-    return ::testing::AssertionFailure() << "table has no string pool for block " << block;
+    return AssertionFailure() << "table has no string pool for block " << block;
   }
 
   const String8 actual_str = pool->string8ObjectAt(val.data);
   if (String8(expected_str) != actual_str) {
-    return ::testing::AssertionFailure() << actual_str.string();
+    return AssertionFailure() << actual_str.string();
   }
-  return ::testing::AssertionSuccess() << actual_str.string();
-}
-
-std::string GetStringFromPool(const ResStringPool* pool, uint32_t idx) {
-  String8 str = pool->string8ObjectAt(idx);
-  return std::string(str.string(), str.length());
+  return AssertionSuccess() << actual_str.string();
 }
 
 }  // namespace android