Camera2: Tests: Release streams after HAL is unloaded: DO NOT MERGE

This fixes a segfault in the HAL where it was trying to write to a locked buffer
that disappeared from underneath it.

Any users of CameraModuleFixture should now call SetUp/TearDown explicitly.
Other classes remain unchanged until we need a custom TearDown order for them.

Change-Id: Ia2dc3ac3e2497d9ede9b580f6e10cf9ec646bdab

tests/camera2/CameraModuleFixture.h

@@ -37,14 +37,10 @@ struct CameraModuleFixture {
         TEST_EXTENSION_FORKING_CONSTRUCTOR;
 
         mCameraID = CameraID;
-
-        SetUp();
     }
 
     ~CameraModuleFixture() {
         TEST_EXTENSION_FORKING_DESTRUCTOR;
-
-        TearDown();
     }
 
     camera_metadata_ro_entry GetStaticEntry(uint32_t tag) const {
@@ -53,8 +49,6 @@ struct CameraModuleFixture {
         return entry;
     }
 
-private:
-
     void SetUp() {
         TEST_EXTENSION_FORKING_SET_UP;
 
@@ -88,6 +82,8 @@ private:
         }
     }
 
+private:
+
     void SetUpMixin() {
         /* For using this fixture in other tests only */
         if (mCameraID != -1) {

tests/camera2/CameraModuleTests.cpp

@@ -33,6 +33,15 @@ namespace tests {
 
 class CameraModuleTest : public ::testing::Test,
                                   public CameraModuleFixture<> {
+
+public:
+    CameraModuleTest() {
+        CameraModuleFixture::SetUp();
+    }
+
+    ~CameraModuleTest() {
+        CameraModuleFixture::TearDown();
+    }
 };
 
 TEST_F(CameraModuleTest, LoadModule) {

tests/camera2/CameraStreamFixture.h

@@ -68,6 +68,8 @@ private:
     void SetUp() {
         TEST_EXTENSION_FORKING_SET_UP;
 
+        CameraModuleFixture::SetUp();
+
         CameraStreamParams p = mParam;
         sp<Camera2Device> device = mDevice;
 
@@ -89,6 +91,13 @@ private:
     }
     void TearDown() {
         TEST_EXTENSION_FORKING_TEAR_DOWN;
+
+        // important: shut down HAL before releasing streams
+        CameraModuleFixture::TearDown();
+
+        mNativeWindow.clear();
+        mCpuConsumer.clear();
+        mFrameListener.clear();
     }
 
 protected: