SF: Introduce libsurfaceflinger_unittest
This is meant to be a framework for running function-level unit tests
against the various SurfaceFlinger classes.
The point of this patch is to set up the test framework, as well as
demonstrate a pattern to be used to allow private implementation
functions to be tested.
Note that this patch configures the base surfaceflinger code to now use
ThinLTO, and enables -fwhole-program-vtables. This is done as ThinLTO
with that option will perform a devirtualization pass, turning virtual
function calls back into non-virtual function calls (and possibly even
inlining the call) when it detects that there is only one possible
implementation being called. The cost is a slight increase in build time
(similar to -O2), but is still much less than the original LTO.
Even here that LTO pass does something to the surfaceflinger binary,
reducing the file size by 4Kb.
Test: libsurfaceflinger_unittest passes on Pixel XL
Test: atest libsurfaceflinger_unittest runs the new test
Bug: None
Change-Id: I362ec1fcf1a909c4d6769710d8d8a6b0b158600d
diff --git a/services/surfaceflinger/tests/unittests/Android.bp b/services/surfaceflinger/tests/unittests/Android.bp
new file mode 100644
index 0000000..72e0a0f
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/Android.bp
@@ -0,0 +1,30 @@
+// Copyright (C) 2018 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.
+
+cc_test {
+ name: "libsurfaceflinger_unittest",
+ tags: ["test"],
+ defaults: ["libsurfaceflinger_defaults"],
+ test_suites: ["device-tests"],
+ srcs: [
+ ":libsurfaceflinger_sources",
+ "DisplayTransactionTest.cpp",
+ ],
+ static_libs: [
+ "libgmock",
+ ],
+ header_libs: [
+ "libsurfaceflinger_headers",
+ ],
+}