This cl tries to fix cts tests IncidentdTest

1. Disable BatteryType section which is device-specific
2. Make timeout longer since meminfo section timedout in test
3. make some negative values sint
4. varint can be 64 bits, there is a bug implicitly convert it to 32
which loses values.
5. Found another bug which failed to read 64 bits varint, create a
native test to make sure it works.

Bug: 77291057
Test: atest CtsIncidentHostTestCases:com.android.server.cts.IncidentdTest
Change-Id: I04cc730741f7901f37ac57a11af7777d57118a23
diff --git a/libs/protoutil/tests/EncodedBuffer_test.cpp b/libs/protoutil/tests/EncodedBuffer_test.cpp
new file mode 100644
index 0000000..615ab4a
--- /dev/null
+++ b/libs/protoutil/tests/EncodedBuffer_test.cpp
@@ -0,0 +1,25 @@
+// 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 <android/util/EncodedBuffer.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using namespace android::util;
+
+TEST(EncodedBufferTest, ReadVarint) {
+    EncodedBuffer buffer;
+    uint64_t val = UINT64_C(1522865904593);
+    buffer.writeRawVarint64(val);
+    EXPECT_EQ(val, buffer.begin().readRawVarint());
+}