Camera HAL3: first few unit tests.

Change-Id: I413dc447faadd4fd90986bc924722b2826e19382
Signed-off-by: Sasha Levitskiy <sanek@google.com>
diff --git a/tests/camera3/camera3tests.cpp b/tests/camera3/camera3tests.cpp
new file mode 100644
index 0000000..9585483
--- /dev/null
+++ b/tests/camera3/camera3tests.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 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 <gtest/gtest.h>
+#include "camera3test_fixtures.h"
+
+namespace tests {
+
+TEST_F(Camera3Test, NumberOfCameras) {
+    ASSERT_LT(0, num_cams()) << "No cameras found";
+    ASSERT_GE(kMmaxCams, num_cams()) << "Too many cameras found";
+}
+
+TEST_F(Camera3Test, IsActiveArraySizeSubsetPixelArraySize) {
+    for (int i = 0; i < num_cams(); ++i) {
+        ASSERT_TRUE(NULL != cam_module()->get_camera_info)
+            << "get_camera_info is not implemented";
+
+        camera_info info;
+        ASSERT_EQ(0, cam_module()->get_camera_info(i, &info))
+                    << "Can't get camera info for" << i;
+
+        camera_metadata_entry entry;
+        ASSERT_EQ(0, find_camera_metadata_entry(
+                    const_cast<camera_metadata_t*>(
+                        info.static_camera_characteristics),
+                        ANDROID_SENSOR_INFO_PIXEL_ARRAY_SIZE, &entry))
+                            << "Can't find the sensor pixel array size.";
+        int pixel_array_w = entry.data.i32[0];
+        int pixel_array_h = entry.data.i32[1];
+
+        ASSERT_EQ(0, find_camera_metadata_entry(
+                    const_cast<camera_metadata_t*>(
+                        info.static_camera_characteristics),
+                        ANDROID_SENSOR_INFO_ACTIVE_ARRAY_SIZE, &entry))
+                            << "Can't find the sensor active array size.";
+        int active_array_w = entry.data.i32[0];
+        int active_array_h = entry.data.i32[1];
+
+        EXPECT_LE(active_array_h, pixel_array_h);
+        EXPECT_LE(active_array_w, pixel_array_w);
+    }
+}
+
+}  // namespace tests