upload android base code part3

android/bionic/tests/regex_test.cpp

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2012 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 <gtest/gtest.h>
+
+#include <sys/types.h>
+#include <regex.h>
+
+TEST(regex, smoke) {
+  // A quick test of all the regex functions.
+  regex_t re;
+  ASSERT_EQ(0, regcomp(&re, "ab*c", 0));
+  ASSERT_EQ(0, regexec(&re, "abbbc", 0, NULL, 0));
+  ASSERT_EQ(REG_NOMATCH, regexec(&re, "foo", 0, NULL, 0));
+
+  char buf[80];
+  regerror(REG_NOMATCH, &re, buf, sizeof(buf));
+#if defined(__BIONIC__)
+  ASSERT_STREQ("regexec() failed to match", buf);
+#else
+  ASSERT_STREQ("No match", buf);
+#endif
+
+  regfree(&re);
+}
+
+TEST(regex, match_offsets) {
+  regex_t re;
+  regmatch_t matches[1];
+  ASSERT_EQ(0, regcomp(&re, "b", 0));
+  ASSERT_EQ(0, regexec(&re, "abc", 1, matches, 0));
+  ASSERT_EQ(1, matches[0].rm_so);
+  ASSERT_EQ(2, matches[0].rm_eo);
+  regfree(&re);
+}
+
+TEST(regex, regerror_NULL_0) {
+  regex_t re;
+  int error = regcomp(&re, "*", REG_EXTENDED);
+  ASSERT_NE(0, error);
+
+  // Passing a null pointer and a size of 0 is a legitimate way to ask
+  // how large a buffer we would need for the error message.
+  int error_length = regerror(error, &re, nullptr, 0);
+  ASSERT_GT(error_length, 0);
+}