[ANativeWindow] Add test infrastructure for apex apis

* Add ANativeWindow_getLastDequeueDuration as proof of concept
* Add ANativeWindowTest harness
* apex/ include directory for code living in apex modules, so that vndk
or system apis aren't pulled in
* TEST_MAPPING configuration for presubmit

Note that we're not piggybacking off of the existing Surface_test
harness, as those tests assume that the libgui Surface is The
ANativeWindow surface implementation, which means that those tests may
test implementation details that the harness defined in this change
should not attempt to test. Further, if an alternative implementation is
provided (e.g. an ANativeWindow -> BLAST adapter), we should be able to
parameterize the tests here. For now, however, we'll keep the assumption
that Surface is the only relevant surface implementation so that nonzero
tests may be written.

Bug: 137012161
Bug: 137012798
Test: libnativewindow_test
Change-Id: I0dddc348563ba95530fb1bd04bde66080755a91d

9 files changed, 143 insertions, 3 deletions

diff --git a/libs/gui/TEST_MAPPING b/libs/gui/TEST_MAPPING
new file mode 100644
index 0000000000..1c435304a8
--- /dev/null
+++ b/libs/gui/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "imports": [
+    {
+      "path": "frameworks/native/libs/nativewindow"
+    }
+  ]
+}
diff --git a/libs/nativewindow/ANativeWindow.cpp b/libs/nativewindow/ANativeWindow.cpp
index 1751443419..4c59e6ce98 100644
--- a/libs/nativewindow/ANativeWindow.cpp
+++ b/libs/nativewindow/ANativeWindow.cpp
@@ -266,3 +266,11 @@ int ANativeWindow_setAutoRefresh(ANativeWindow* window, bool autoRefresh) {
 int ANativeWindow_setAutoPrerotation(ANativeWindow* window, bool autoPrerotation) {
     return native_window_set_auto_prerotation(window, autoPrerotation);
 }
+
+/**************************************************************************************************
+ * apex-stable
+ **************************************************************************************************/
+
+int ANativeWindow_getLastDequeueDuration(ANativeWindow* window) {
+    return query(window, NATIVE_WINDOW_LAST_DEQUEUE_DURATION);
+}
diff --git a/libs/nativewindow/TEST_MAPPING b/libs/nativewindow/TEST_MAPPING
new file mode 100644
index 0000000000..3d7f3c28f4
--- /dev/null
+++ b/libs/nativewindow/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+      "name": "libnativewindow_test"
+    }
+  ]
+}
diff --git a/libs/nativewindow/include/apex/window.h b/libs/nativewindow/include/apex/window.h
new file mode 100644
index 0000000000..0260cbcfb4
--- /dev/null
+++ b/libs/nativewindow/include/apex/window.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright 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.
+ */
+
+#pragma once
+
+#include <nativebase/nativebase.h>
+
+// apex is a superset of the NDK
+#include <android/native_window.h>
+
+__BEGIN_DECLS
+
+/**
+ * Retrieves how long it took for the last time a buffer was dequeued.
+ *
+ * \return a negative value on error, otherwise returns the duration in
+ * microseconds.
+ */
+int ANativeWindow_getLastDequeueDuration(ANativeWindow* window);
+
+__END_DECLS
diff --git a/libs/nativewindow/include/system/window.h b/libs/nativewindow/include/system/window.h
index 8cbf0a4244..78354bba6b 100644
--- a/libs/nativewindow/include/system/window.h
+++ b/libs/nativewindow/include/system/window.h
@@ -41,7 +41,8 @@
 #include <unistd.h>
 #include <stdbool.h>
 
-// system/window.h is a superset of the vndk
+// system/window.h is a superset of the vndk and apex apis
+#include <apex/window.h>
 #include <vndk/window.h>
 
 
diff --git a/libs/nativewindow/libnativewindow.map.txt b/libs/nativewindow/libnativewindow.map.txt
index 119a07dad7..7fe4df0606 100644
--- a/libs/nativewindow/libnativewindow.map.txt
+++ b/libs/nativewindow/libnativewindow.map.txt
@@ -22,6 +22,7 @@ LIBNATIVEWINDOW {
     ANativeWindow_getBuffersDataSpace; # introduced=28
     ANativeWindow_getFormat;
     ANativeWindow_getHeight;
+    ANativeWindow_getLastDequeueDuration; # apex # introduced=30
     ANativeWindow_getWidth;
     ANativeWindow_lock;
     ANativeWindow_query; # vndk
diff --git a/libs/nativewindow/tests/ANativeWindowTest.cpp b/libs/nativewindow/tests/ANativeWindowTest.cpp
new file mode 100644
index 0000000000..a80da24a47
--- /dev/null
+++ b/libs/nativewindow/tests/ANativeWindowTest.cpp
@@ -0,0 +1,72 @@
+/*
+ * Copyright 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.
+ */
+
+#define LOG_TAG "ANativeWindow_test"
+//#define LOG_NDEBUG 0
+
+#include <gtest/gtest.h>
+#include <gui/BufferItemConsumer.h>
+#include <gui/BufferQueue.h>
+#include <gui/Surface.h>
+#include <log/log.h>
+#include <sync/sync.h>
+// We need to use the private system apis since not everything is visible to
+// apexes yet.
+#include <system/window.h>
+
+using namespace android;
+
+class ANativeWindowTest : public ::testing::Test {
+protected:
+    void SetUp() override {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        ALOGV("**** Setting up for %s.%s\n", test_info->test_case_name(), test_info->name());
+        BufferQueue::createBufferQueue(&mProducer, &mConsumer);
+        mItemConsumer = new BufferItemConsumer(mConsumer, GRALLOC_USAGE_SW_READ_OFTEN);
+        mWindow = new Surface(mProducer);
+        const int success = native_window_api_connect(mWindow.get(), NATIVE_WINDOW_API_CPU);
+        EXPECT_EQ(0, success);
+    }
+
+    void TearDown() override {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        ALOGV("**** Tearing down after %s.%s\n", test_info->test_case_name(), test_info->name());
+        const int success = native_window_api_disconnect(mWindow.get(), NATIVE_WINDOW_API_CPU);
+        EXPECT_EQ(0, success);
+    }
+    sp<IGraphicBufferProducer> mProducer;
+    sp<IGraphicBufferConsumer> mConsumer;
+    sp<BufferItemConsumer> mItemConsumer;
+    sp<ANativeWindow> mWindow;
+};
+
+TEST_F(ANativeWindowTest, getLastDequeueDuration_noDequeue_returnsZero) {
+    int result = ANativeWindow_getLastDequeueDuration(mWindow.get());
+    EXPECT_EQ(0, result);
+}
+
+TEST_F(ANativeWindowTest, getLastDequeueDuration_withDequeue_returnsTime) {
+    ANativeWindowBuffer* buffer;
+    int fd;
+    int result = ANativeWindow_dequeueBuffer(mWindow.get(), &buffer, &fd);
+    close(fd);
+    EXPECT_EQ(0, result);
+
+    result = ANativeWindow_getLastDequeueDuration(mWindow.get());
+    EXPECT_GT(result, 0);
+}
diff --git a/libs/nativewindow/tests/Android.bp b/libs/nativewindow/tests/Android.bp
index 20071be668..cdb3d2054f 100644
--- a/libs/nativewindow/tests/Android.bp
+++ b/libs/nativewindow/tests/Android.bp
@@ -15,13 +15,22 @@
 //
 
 cc_test {
-    name: "AHardwareBufferTest",
+    name: "libnativewindow_test",
+    test_suites: [
+        "device-tests",
+    ],
     shared_libs: [
+        "libgui",
+        "liblog",
         "libnativewindow",
+        "libsync",
+        "libutils",
         "android.hardware.graphics.common@1.0",
     ],
     srcs: [
         "AHardwareBufferTest.cpp",
-        "c_compatibility.c"],
+        "ANativeWindowTest.cpp",
+        "c_compatibility.c",
+    ],
     cflags: ["-Wall", "-Werror"],
 }
diff --git a/libs/nativewindow/tests/c_compatibility.c b/libs/nativewindow/tests/c_compatibility.c
index befd88fd07..aa9b4f7e78 100644
--- a/libs/nativewindow/tests/c_compatibility.c
+++ b/libs/nativewindow/tests/c_compatibility.c
@@ -16,6 +16,7 @@
 
 #include <android/hardware_buffer.h>
 #include <android/native_window.h>
+#include <apex/window.h>
 #include <vndk/hardware_buffer.h>
 #include <vndk/window.h>