1 files changed, 64 insertions, 0 deletions
diff --git a/services/surfaceflinger/tests/unittests/mock/MockDispSync.cpp b/services/surfaceflinger/tests/unittests/mock/MockDispSync.cpp
new file mode 100644
index 0000000000..1c8c44dca0
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/mock/MockDispSync.cpp
@@ -0,0 +1,64 @@
+/*
+ * 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.
+ */
+
+#include "mock/MockDispSync.h"
+#include <thread>
+
+using namespace std::chrono_literals;
+namespace android {
+namespace mock {
+
+// Explicit default instantiation is recommended.
+DispSync::DispSync() = default;
+DispSync::~DispSync() = default;
+
+status_t DispSync::addEventListener(const char* /*name*/, nsecs_t phase, Callback* callback,
+                                    nsecs_t /*lastCallbackTime*/) {
+    if (mCallback.callback != nullptr) {
+        return BAD_VALUE;
+    }
+
+    mCallback = {callback, phase};
+    return NO_ERROR;
+}
+status_t DispSync::removeEventListener(Callback* callback, nsecs_t* /*outLastCallback*/) {
+    if (mCallback.callback != callback) {
+        return BAD_VALUE;
+    }
+
+    mCallback = {nullptr, 0};
+    return NO_ERROR;
+}
+
+status_t DispSync::changePhaseOffset(Callback* callback, nsecs_t phase) {
+    if (mCallback.callback != callback) {
+        return BAD_VALUE;
+    }
+
+    mCallback.phase = phase;
+    return NO_ERROR;
+}
+
+void DispSync::triggerCallback() {
+    if (mCallback.callback == nullptr) return;
+
+    const std::chrono::nanoseconds now = std::chrono::steady_clock::now().time_since_epoch();
+    const auto expectedVSyncTime = now + 16ms;
+    mCallback.callback->onDispSyncEvent(now.count(), expectedVSyncTime.count());
+}
+
+} // namespace mock
+} // namespace android