Merge pull request #533 from kevinGC:stub-dev-tty

PiperOrigin-RevId: 258607547

1 files changed, 10 insertions, 0 deletions

diff --git a/test/syscalls/linux/dev.cc b/test/syscalls/linux/dev.cc
index b86ebe233..4dd302eed 100644
--- a/test/syscalls/linux/dev.cc
+++ b/test/syscalls/linux/dev.cc
@@ -13,7 +13,10 @@
 // limitations under the License.
 
 #include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
+
 #include <vector>
 
 #include "gmock/gmock.h"
@@ -143,6 +146,13 @@ TEST(DevTest, WriteDevFull) {
   EXPECT_THAT(WriteFd(fd.get(), "a", 1), SyscallFailsWithErrno(ENOSPC));
 }
 
+TEST(DevTest, TTYExists) {
+  struct stat statbuf = {};
+  ASSERT_THAT(stat("/dev/tty", &statbuf), SyscallSucceeds());
+  // Check that it's a character device with rw-rw-rw- permissions.
+  EXPECT_EQ(statbuf.st_mode, S_IFCHR | 0666);
+}
+
 }  // namespace
 }  // namespace testing