test-hwc2: set layer blend mode

Test: Add "#define HAVE_NO_SURFACE_FLINGER" to
          frameworks/native/libs/gui/BufferQueueCore.cpp.
      Recompile and flash.
      Run "mm" in frameworks/native/services/surfaceflinger/tests/hwc2.
      Push test-hwc2 to device.
      Run "adb root && adb shell stop".
      Run test case. Ex: "./test-hwc2"

Change-Id: Id5a7a568fb81ac9aff388d04077a12765cc135a3
diff --git a/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h b/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h
index 74f571e..3375d86 100644
--- a/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h
+++ b/services/surfaceflinger/tests/hwc2/Hwc2TestProperties.h
@@ -17,6 +17,7 @@
 #ifndef _HWC2_TEST_PROPERTIES_H
 #define _HWC2_TEST_PROPERTIES_H
 
+#include <array>
 #include <vector>
 
 #define HWC2_INCLUDE_STRINGIFICATION
@@ -32,20 +33,39 @@
 };
 
 
-template <class T>
-class Hwc2TestProperty {
+class Hwc2TestContainer {
 public:
+    virtual ~Hwc2TestContainer() = default;
+
+    /* Resets the container */
+    virtual void reset() = 0;
+
+    /* Attempts to advance to the next valid value. Returns true if one can be
+     * found */
+    virtual bool advance() = 0;
+
+    virtual std::string dump() const = 0;
+};
+
+
+template <class T>
+class Hwc2TestProperty : public Hwc2TestContainer {
+public:
+    Hwc2TestProperty(Hwc2TestCoverage coverage,
+            const std::vector<T>& completeList, const std::vector<T>& basicList,
+            const std::vector<T>& defaultList)
+        : Hwc2TestProperty((coverage == Hwc2TestCoverage::Complete)? completeList:
+                (coverage == Hwc2TestCoverage::Basic)? basicList : defaultList) { }
+
     Hwc2TestProperty(const std::vector<T>& list)
         : mList(list) { }
 
-    virtual ~Hwc2TestProperty() { };
-
-    virtual void reset()
+    void reset() override
     {
         mListIdx = 0;
     }
 
-    virtual bool advance()
+    bool advance() override
     {
         if (mListIdx + 1 < mList.size()) {
             mListIdx++;
@@ -55,19 +75,30 @@
         return false;
     }
 
-    virtual T get() const
+    T get() const
     {
         return mList.at(mListIdx);
     }
 
-    virtual std::string dump() const = 0;
-
 protected:
     const std::vector<T>& mList;
     size_t mListIdx = 0;
 };
 
 
+class Hwc2TestBlendMode : public Hwc2TestProperty<hwc2_blend_mode_t> {
+public:
+    Hwc2TestBlendMode(Hwc2TestCoverage coverage);
+
+    std::string dump() const override;
+
+protected:
+    static const std::vector<hwc2_blend_mode_t> mDefaultBlendModes;
+    static const std::vector<hwc2_blend_mode_t> mBasicBlendModes;
+    static const std::vector<hwc2_blend_mode_t> mCompleteBlendModes;
+};
+
+
 class Hwc2TestComposition : public Hwc2TestProperty<hwc2_composition_t> {
 public:
     Hwc2TestComposition(Hwc2TestCoverage coverage);