diff --git a/tests/Android.mk b/tests/Android.mk
index 58cefd2..b29ff50 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -54,17 +54,13 @@
 LOCAL_CFLAGS := -Wall -Werror
 LOCAL_MODULE := recovery_manual_test
 LOCAL_STATIC_LIBRARIES := \
-    libminui \
     libbase \
     libBionicGtestMain
 
 LOCAL_SRC_FILES := manual/recovery_test.cpp
 LOCAL_SHARED_LIBRARIES := \
-    liblog \
-    libpng
+    liblog
 
-LOCAL_TEST_DATA := \
-    $(call find-test-data-in-subdirs, bootable/recovery, "*_text.png", res-*)
 include $(BUILD_NATIVE_TEST)
 
 # Component tests
@@ -95,6 +91,7 @@
     component/edify_test.cpp \
     component/imgdiff_test.cpp \
     component/install_test.cpp \
+    component/resources_test.cpp \
     component/sideload_test.cpp \
     component/uncrypt_test.cpp \
     component/updater_test.cpp \
@@ -121,6 +118,7 @@
     libbsdiff \
     libbspatch \
     libfusesideload \
+    libminui \
     libotafault \
     librecovery \
     libupdater \
@@ -132,6 +130,7 @@
     libdivsufsort \
     libdivsufsort64 \
     libfs_mgr \
+    libpng \
     libvintf_recovery \
     libvintf \
     libhidl-gen-utils \
@@ -157,7 +156,8 @@
     $(tune2fs_static_libraries)
 
 LOCAL_TEST_DATA := \
-    $(call find-test-data-in-subdirs, $(LOCAL_PATH), "*", testdata)
+    $(call find-test-data-in-subdirs, $(LOCAL_PATH), "*", testdata) \
+    $(call find-test-data-in-subdirs, bootable/recovery, "*_text.png", res-*)
 include $(BUILD_NATIVE_TEST)
 
 # Host tests
diff --git a/tests/component/resources_test.cpp b/tests/component/resources_test.cpp
new file mode 100644
index 0000000..618d5a4
--- /dev/null
+++ b/tests/component/resources_test.cpp
@@ -0,0 +1,120 @@
+/*
+ * 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 <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <android-base/file.h>
+#include <android-base/strings.h>
+#include <gtest/gtest.h>
+#include <png.h>
+
+#include "minui/minui.h"
+#include "private/resources.h"
+
+static const std::string kLocale = "zu";
+
+static const std::vector<std::string> kResourceImagesDirs{ "res-mdpi/images/", "res-hdpi/images/",
+                                                           "res-xhdpi/images/",
+                                                           "res-xxhdpi/images/",
+                                                           "res-xxxhdpi/images/" };
+
+static int png_filter(const dirent* de) {
+  if (de->d_type != DT_REG || !android::base::EndsWith(de->d_name, "_text.png")) {
+    return 0;
+  }
+  return 1;
+}
+
+// Finds out all the PNG files to test, which stay under the same dir with the executabl..
+static std::vector<std::string> add_files() {
+  std::vector<std::string> files;
+  for (const std::string& images_dir : kResourceImagesDirs) {
+    static std::string exec_dir = android::base::GetExecutableDirectory();
+    std::string dir_path = exec_dir + "/" + images_dir;
+    dirent** namelist;
+    int n = scandir(dir_path.c_str(), &namelist, png_filter, alphasort);
+    if (n == -1) {
+      printf("Failed to scandir %s: %s\n", dir_path.c_str(), strerror(errno));
+      continue;
+    }
+    if (n == 0) {
+      printf("No file is added for test in %s\n", dir_path.c_str());
+    }
+
+    while (n--) {
+      std::string file_path = dir_path + namelist[n]->d_name;
+      files.push_back(file_path);
+      free(namelist[n]);
+    }
+    free(namelist);
+  }
+  return files;
+}
+
+class ResourcesTest : public testing::TestWithParam<std::string> {
+ public:
+  static std::vector<std::string> png_list;
+
+ protected:
+  void SetUp() override {
+    png_ = std::make_unique<PngHandler>(GetParam());
+    ASSERT_TRUE(png_);
+
+    ASSERT_EQ(PNG_COLOR_TYPE_GRAY, png_->color_type()) << "Recovery expects grayscale PNG file.";
+    ASSERT_LT(static_cast<png_uint_32>(5), png_->width());
+    ASSERT_LT(static_cast<png_uint_32>(0), png_->height());
+    ASSERT_EQ(1, png_->channels()) << "Recovery background text images expects 1-channel PNG file.";
+  }
+
+  std::unique_ptr<PngHandler> png_{ nullptr };
+};
+
+// Parses a png file and tests if it's qualified for the background text image under recovery.
+TEST_P(ResourcesTest, ValidateLocale) {
+  std::vector<unsigned char> row(png_->width());
+  for (png_uint_32 y = 0; y < png_->height(); ++y) {
+    png_read_row(png_->png_ptr(), row.data(), nullptr);
+    int w = (row[1] << 8) | row[0];
+    int h = (row[3] << 8) | row[2];
+    int len = row[4];
+    EXPECT_LT(0, w);
+    EXPECT_LT(0, h);
+    EXPECT_LT(0, len) << "Locale string should be non-empty.";
+    EXPECT_NE(0, row[5]) << "Locale string is missing.";
+
+    ASSERT_GT(png_->height(), y + 1 + h) << "Locale: " << kLocale << " is not found in the file.";
+    char* loc = reinterpret_cast<char*>(&row[5]);
+    if (matches_locale(loc, kLocale.c_str())) {
+      EXPECT_TRUE(android::base::StartsWith(loc, kLocale));
+      break;
+    }
+    for (int i = 0; i < h; ++i, ++y) {
+      png_read_row(png_->png_ptr(), row.data(), nullptr);
+    }
+  }
+}
+
+std::vector<std::string> ResourcesTest::png_list = add_files();
+
+INSTANTIATE_TEST_CASE_P(BackgroundTextValidation, ResourcesTest,
+                        ::testing::ValuesIn(ResourcesTest::png_list.cbegin(),
+                                            ResourcesTest::png_list.cend()));
diff --git a/tests/manual/recovery_test.cpp b/tests/manual/recovery_test.cpp
index c992b07..e1d0771 100644
--- a/tests/manual/recovery_test.cpp
+++ b/tests/manual/recovery_test.cpp
@@ -14,30 +14,22 @@
  * limitations under the License.
  */
 
-#include <dirent.h>
 #include <errno.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <unistd.h>
 
 #include <memory>
 #include <string>
-#include <vector>
 
 #include <android-base/file.h>
-#include <android-base/strings.h>
 #include <android/log.h>
 #include <gtest/gtest.h>
 #include <private/android_logger.h>
 
-#include "minui/minui.h"
-#include "private/resources.h"
-
 static const std::string kInjectTxtFilename = "/data/misc/recovery/inject.txt";
 static const std::string kInjectTxtContent = "Hello World\nWelcome to my recovery\n";
-static const std::string kLocale = "zu";
 
 // Failure is expected on systems that do not deliver either the
 // recovery-persist or recovery-refresh executables. Tests also require
@@ -95,90 +87,3 @@
   }
   EXPECT_EQ(0, unlink(kInjectTxtFilename.c_str()));
 }
-
-static const std::vector<std::string> kResourceImagesDirs{ "res-mdpi/images/", "res-hdpi/images/",
-                                                           "res-xhdpi/images/",
-                                                           "res-xxhdpi/images/",
-                                                           "res-xxxhdpi/images/" };
-
-static int png_filter(const dirent* de) {
-  if (de->d_type != DT_REG || !android::base::EndsWith(de->d_name, "_text.png")) {
-    return 0;
-  }
-  return 1;
-}
-
-// Finds out all the PNG files to test, which stay under the same dir with the executable.
-static std::vector<std::string> add_files() {
-  std::string exec_dir = android::base::GetExecutableDirectory();
-  std::vector<std::string> files;
-  for (const std::string& images_dir : kResourceImagesDirs) {
-    std::string dir_path = exec_dir + "/" + images_dir;
-    dirent** namelist;
-    int n = scandir(dir_path.c_str(), &namelist, png_filter, alphasort);
-    if (n == -1) {
-      printf("Failed to scan dir %s: %s\n", exec_dir.c_str(), strerror(errno));
-      return files;
-    }
-    if (n == 0) {
-      printf("No file is added for test in %s\n", exec_dir.c_str());
-    }
-
-    while (n--) {
-      std::string file_path = dir_path + namelist[n]->d_name;
-      files.push_back(file_path);
-      free(namelist[n]);
-    }
-    free(namelist);
-  }
-  return files;
-}
-
-class ResourcesTest : public testing::TestWithParam<std::string> {
- public:
-  static std::vector<std::string> png_list;
-
- protected:
-  void SetUp() override {
-    png_ = std::make_unique<PngHandler>(GetParam());
-    ASSERT_TRUE(png_);
-
-    ASSERT_EQ(PNG_COLOR_TYPE_GRAY, png_->color_type()) << "Recovery expects grayscale PNG file.";
-    ASSERT_LT(static_cast<png_uint_32>(5), png_->width());
-    ASSERT_LT(static_cast<png_uint_32>(0), png_->height());
-    ASSERT_EQ(1, png_->channels()) << "Recovery background text images expects 1-channel PNG file.";
-  }
-
-  std::unique_ptr<PngHandler> png_{ nullptr };
-};
-
-// Parses a png file and tests if it's qualified for the background text image under recovery.
-TEST_P(ResourcesTest, ValidateLocale) {
-  std::vector<unsigned char> row(png_->width());
-  for (png_uint_32 y = 0; y < png_->height(); ++y) {
-    png_read_row(png_->png_ptr(), row.data(), nullptr);
-    int w = (row[1] << 8) | row[0];
-    int h = (row[3] << 8) | row[2];
-    int len = row[4];
-    EXPECT_LT(0, w);
-    EXPECT_LT(0, h);
-    EXPECT_LT(0, len) << "Locale string should be non-empty.";
-    EXPECT_NE(0, row[5]) << "Locale string is missing.";
-
-    ASSERT_GT(png_->height(), y + 1 + h) << "Locale: " << kLocale << " is not found in the file.";
-    char* loc = reinterpret_cast<char*>(&row[5]);
-    if (matches_locale(loc, kLocale.c_str())) {
-      EXPECT_TRUE(android::base::StartsWith(loc, kLocale));
-      break;
-    }
-    for (int i = 0; i < h; ++i, ++y) {
-      png_read_row(png_->png_ptr(), row.data(), nullptr);
-    }
-  }
-}
-
-std::vector<std::string> ResourcesTest::png_list = add_files();
-
-INSTANTIATE_TEST_CASE_P(BackgroundTextValidation, ResourcesTest,
-                        ::testing::ValuesIn(ResourcesTest::png_list.cbegin(),
-                                            ResourcesTest::png_list.cend()));