Merge "Add VtsKernelLoopConfigTest." am: f42cc8a6e1 am: 631797534c

am: 368c40d0a5

Change-Id: I35c1983977763b015b2bc53a56950c5a1bc72f3b

4 files changed, 152 insertions, 5 deletions

diff --git a/Android.bp b/loop/Android.bp
index 77862666..743978f8 100644
--- a/Android.bp
+++ b/loop/Android.bp
@@ -1,10 +1,10 @@
-// Copyright (C) 2017 The Android Open Source Project
+// Copyright (C) 2019 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
+//      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,
@@ -12,6 +12,17 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-subdirs = [
-    "api/tun",
-]
+cc_test {
+    name: "vts_kernel_loopconfig_test",
+    srcs: ["vts_kernel_loopconfig_test.cpp"],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    shared_libs: [
+        "libbase",
+    ],
+    static_libs: [
+        "libgmock",
+    ],
+}
diff --git a/loop/Android.mk b/loop/Android.mk
new file mode 100644
index 00000000..6bc80dfd
--- /dev/null
+++ b/loop/Android.mk
@@ -0,0 +1,22 @@
+#
+# 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.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := VtsKernelLoopConfigTest
+-include test/vts/tools/build/Android.host_config.mk
diff --git a/loop/AndroidTest.xml b/loop/AndroidTest.xml
new file mode 100644
index 00000000..8f42344f
--- /dev/null
+++ b/loop/AndroidTest.xml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2019 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.
+-->
+<configuration description="Config for VTS VtsKernelLoopConfigTest">
+    <option name="config-descriptor:metadata" key="plan" value="vts-kernel" />
+    <target_preparer class="com.android.compatibility.common.tradefed.targetprep.VtsFilePusher">
+        <option name="abort-on-push-failure" value="false"/>
+        <option name="push-group" value="HostDrivenTest.push"/>
+    </target_preparer>
+    <test class="com.android.tradefed.testtype.VtsMultiDeviceTest">
+        <option name="test-module-name" value="VtsKernelLoopConfigTest"/>
+        <option name="binary-test-source" value="_32bit::DATA/nativetest/vts_kernel_loopconfig_test/vts_kernel_loopconfig_test" />
+        <option name="binary-test-source" value="_64bit::DATA/nativetest64/vts_kernel_loopconfig_test/vts_kernel_loopconfig_test" />
+        <option name="binary-test-type" value="gtest" />
+        <option name="test-timeout" value="1m" />
+    </test>
+</configuration>
diff --git a/loop/vts_kernel_loopconfig_test.cpp b/loop/vts_kernel_loopconfig_test.cpp
new file mode 100644
index 00000000..7ecad0d0
--- /dev/null
+++ b/loop/vts_kernel_loopconfig_test.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2019 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 <array>
+#include <cstdio>
+#include <fstream>
+#include <string>
+
+#include <android-base/properties.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+namespace android {
+namespace kernel {
+
+class KernelLoopConfigTest : public ::testing::Test {
+ protected:
+  const int first_api_level_;
+  KernelLoopConfigTest()
+      : first_api_level_(std::stoi(
+            android::base::GetProperty("ro.product.first_api_level", "0"))) {}
+  bool should_run() const {
+    // TODO replace with the proper Q constant once known, and check for
+    // APEX support as well (for upgrading devices)
+    return first_api_level_ >= 29;
+  }
+};
+
+TEST_F(KernelLoopConfigTest, ValidLoopConfig) {
+  if (!should_run()) return;
+
+  static constexpr const char* kCmd =
+      "zcat /proc/config.gz | grep CONFIG_BLK_DEV_LOOP_MIN_COUNT";
+  std::array<char, 256> line;
+
+  std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(kCmd, "r"), pclose);
+  ASSERT_NE(pipe, nullptr);
+
+  auto read = fgets(line.data(), line.size(), pipe.get());
+  ASSERT_NE(read, nullptr);
+
+  auto minCountStr = std::string(read);
+
+  auto pos = minCountStr.find("=");
+  ASSERT_NE(pos, std::string::npos);
+  ASSERT_GE(minCountStr.length(), pos + 1);
+
+  int minCountValue = std::stoi(minCountStr.substr(pos + 1));
+  ASSERT_GE(minCountValue, 16);
+}
+
+TEST_F(KernelLoopConfigTest, ValidLoopParameters) {
+  if (!should_run()) return;
+
+  std::ifstream max_loop("/sys/module/loop/parameters/max_loop");
+  std::ifstream max_part("/sys/module/loop/parameters/max_part");
+
+  std::string max_loop_str;
+  std::string max_part_str;
+
+  std::getline(max_loop, max_loop_str);
+  std::getline(max_part, max_part_str);
+
+  int max_part_value = std::stoi(max_part_str);
+  EXPECT_LE(max_part_value, 7);
+
+  int max_loop_value = std::stoi(max_loop_str);
+  EXPECT_EQ(0, max_loop_value);
+}
+
+}  // namespace kernel
+}  // namespace android