Add unit tests to libprotoutil.

Bug: 77342154
Test: atest libprotoutil_test
Change-Id: I57f31f5cf83b635b200a93cbc655fac7f5edfbd5

1 files changed, 51 insertions, 0 deletions

diff --git a/libs/protoutil/tests/protobuf_test.cpp b/libs/protoutil/tests/protobuf_test.cpp
new file mode 100644
index 000000000000..5ca3e6477c01
--- /dev/null
+++ b/libs/protoutil/tests/protobuf_test.cpp
@@ -0,0 +1,51 @@
+// 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/protobuf.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using namespace android::util;
+
+TEST(ProtobufTest, All) {
+    EXPECT_EQ(read_wire_type(UINT32_C(17)), 1);
+    EXPECT_EQ(read_field_id(UINT32_C(17)), 2);
+    EXPECT_EQ(get_varint_size(UINT64_C(234134)), 3);
+    EXPECT_EQ(get_varint_size(UINT64_C(-1)), 10);
+
+    constexpr uint8_t UNSET_BYTE = 0xAB;
+
+    uint8_t buf[11];
+    memset(buf, UNSET_BYTE, sizeof(buf));
+    EXPECT_EQ(write_raw_varint(buf, UINT64_C(150)) - buf, 2);
+    EXPECT_EQ(buf[0], 0x96);
+    EXPECT_EQ(buf[1], 0x01);
+    EXPECT_EQ(buf[2], UNSET_BYTE);
+
+    memset(buf, UNSET_BYTE, sizeof(buf));
+    EXPECT_EQ(write_raw_varint(buf, UINT64_C(-2)) - buf, 10);
+    EXPECT_EQ(buf[0], 0xfe);
+    for (int i = 1; i < 9; i++) {
+        EXPECT_EQ(buf[i], 0xff);
+    }
+    EXPECT_EQ(buf[9], 0x01);
+    EXPECT_EQ(buf[10], UNSET_BYTE);
+
+    uint8_t header[20];
+    memset(header, UNSET_BYTE, sizeof(header));
+    EXPECT_EQ(write_length_delimited_tag_header(header, 3, 150) - header, 3);
+    EXPECT_EQ(header[0], 26);
+    EXPECT_EQ(header[1], 0x96);
+    EXPECT_EQ(header[2], 0x01);
+    EXPECT_EQ(header[3], UNSET_BYTE);
+}
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