start a util unittest
Bug: None
Test: `make check` passes
Change-Id: I9a39bf72649f040b95be68a4fa8f799b6e7ead65
diff --git a/util_unittest.cc b/util_unittest.cc
new file mode 100644
index 0000000..b5cdff7
--- /dev/null
+++ b/util_unittest.cc
@@ -0,0 +1,67 @@
+// util_unittest.cpp
+// 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.
+//
+// Test system.[ch] module code using gtest.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <gtest/gtest.h>
+
+#include "util.h"
+
+// Sanity check for the strip func.
+TEST(strip, basic) {
+ char str[] = " foo\t";
+ ASSERT_EQ("foo", std::string(strip(str)));
+}
+
+// Make sure we don't crash with various "null"-like inputs.
+TEST(tokenize, null_stringp) {
+ ASSERT_EQ(nullptr, tokenize(nullptr, nullptr));
+ ASSERT_EQ(nullptr, tokenize(nullptr, ""));
+ ASSERT_EQ(nullptr, tokenize(nullptr, ","));
+
+ char *p = nullptr;
+ ASSERT_EQ(nullptr, tokenize(&p, nullptr));
+}
+
+// Make sure we don't crash with various "null"-like inputs.
+TEST(tokenize, null_delim) {
+ char str[] = "a,b,c";
+ char *p = str;
+ ASSERT_EQ(str, tokenize(&p, nullptr));
+ ASSERT_EQ(nullptr, p);
+ ASSERT_EQ(str, std::string("a,b,c"));
+
+ p = str;
+ ASSERT_EQ(str, tokenize(&p, ""));
+ ASSERT_EQ(nullptr, p);
+ ASSERT_EQ(str, std::string("a,b,c"));
+}
+
+// Sanity check for the tokenize func.
+TEST(tokenize, basic) {
+ char str[] = "a,b,c";
+ char *p = str;
+ ASSERT_EQ("a", std::string(tokenize(&p, ",")));
+ ASSERT_EQ("b", std::string(tokenize(&p, ",")));
+ ASSERT_EQ("c", std::string(tokenize(&p, ",")));
+ ASSERT_EQ(nullptr, p);
+ ASSERT_EQ(nullptr, tokenize(&p, ","));
+}