Add POSIX-2008 fmemopen, open_memstream, and open_wmemstream.
Bug: 17164505
Change-Id: I59e28a08ff8b6ab632230b11a5807cfd5278aeb5
diff --git a/tests/stdio_test.cpp b/tests/stdio_test.cpp
index bb86509..2cd0df2 100644
--- a/tests/stdio_test.cpp
+++ b/tests/stdio_test.cpp
@@ -676,3 +676,82 @@
fclose(fp);
}
+
+TEST(stdio, fmemopen) {
+ char buf[16];
+ memset(buf, 0, sizeof(buf));
+ FILE* fp = fmemopen(buf, sizeof(buf), "r+");
+ ASSERT_EQ('<', fputc('<', fp));
+ ASSERT_NE(EOF, fputs("abc>\n", fp));
+ fflush(fp);
+
+ ASSERT_STREQ("<abc>\n", buf);
+
+ rewind(fp);
+
+ char line[16];
+ char* s = fgets(line, sizeof(line), fp);
+ ASSERT_TRUE(s != NULL);
+ ASSERT_STREQ("<abc>\n", s);
+
+ fclose(fp);
+}
+
+TEST(stdio, fmemopen_NULL) {
+ FILE* fp = fmemopen(nullptr, 128, "r+");
+ ASSERT_NE(EOF, fputs("xyz\n", fp));
+
+ rewind(fp);
+
+ char line[16];
+ char* s = fgets(line, sizeof(line), fp);
+ ASSERT_TRUE(s != NULL);
+ ASSERT_STREQ("xyz\n", s);
+
+ fclose(fp);
+}
+
+TEST(stdio, fmemopen_EINVAL) {
+ char buf[16];
+
+ // Invalid size.
+ errno = 0;
+ ASSERT_EQ(nullptr, fmemopen(buf, 0, "r+"));
+ ASSERT_EQ(EINVAL, errno);
+
+ // No '+' with NULL buffer.
+ errno = 0;
+ ASSERT_EQ(nullptr, fmemopen(nullptr, 0, "r"));
+ ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(stdio, open_memstream) {
+ char* p = nullptr;
+ size_t size = 0;
+ FILE* fp = open_memstream(&p, &size);
+ ASSERT_NE(EOF, fputs("hello, world!", fp));
+ fclose(fp);
+
+ ASSERT_STREQ("hello, world!", p);
+ ASSERT_EQ(strlen("hello, world!"), size);
+ free(p);
+}
+
+TEST(stdio, open_memstream_EINVAL) {
+#if defined(__BIONIC__)
+ char* p;
+ size_t size;
+
+ // Invalid buffer.
+ errno = 0;
+ ASSERT_EQ(nullptr, open_memstream(nullptr, &size));
+ ASSERT_EQ(EINVAL, errno);
+
+ // Invalid size.
+ errno = 0;
+ ASSERT_EQ(nullptr, open_memstream(&p, nullptr));
+ ASSERT_EQ(EINVAL, errno);
+#else
+ GTEST_LOG_(INFO) << "This test does nothing.\n";
+#endif
+}