Add trivial termios tests.
...and fix the bugs.
Also explain why we can't support separate input and output speeds
without an ABI change. Luckily no-one is likely to need that anyway,
and they can always work around it by using `struct termios2` directly
themselves.
Bug: http://b/69816452
Test: ran tests
Change-Id: Ie08499a198bb6a20d7e5e2f5ff74a60bd53e97e1
diff --git a/tests/termios_test.cpp b/tests/termios_test.cpp
new file mode 100644
index 0000000..6290771
--- /dev/null
+++ b/tests/termios_test.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <termios.h>
+
+#include <errno.h>
+
+#include <gtest/gtest.h>
+
+// TODO:
+// tcdrain
+// tcflow
+// tcflush
+// tcgetattr
+// tcgetsid
+// tcsendbreak
+// tcsetattr
+
+TEST(termios, cfgetispeed_cfsetispeed) {
+ termios t = {};
+ ASSERT_EQ(0, cfsetispeed(&t, B1200));
+ ASSERT_EQ(static_cast<speed_t>(B1200), cfgetispeed(&t));
+}
+
+TEST(termios, cfsetispeed_EINVAL) {
+ termios t = {};
+ errno = 0;
+ ASSERT_EQ(-1, cfsetispeed(&t, 1200));
+ ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(termios, cfgetospeed_cfsetospeed) {
+ termios t = {};
+ ASSERT_EQ(0, cfsetospeed(&t, B1200));
+ ASSERT_EQ(static_cast<speed_t>(B1200), cfgetospeed(&t));
+}
+
+TEST(termios, cfsetospeed_EINVAL) {
+ termios t = {};
+ errno = 0;
+ ASSERT_EQ(-1, cfsetospeed(&t, 1200));
+ ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(termios, cfsetspeed) {
+ termios t = {};
+ ASSERT_EQ(0, cfsetspeed(&t, B1200));
+ ASSERT_EQ(static_cast<speed_t>(B1200), cfgetispeed(&t));
+ ASSERT_EQ(static_cast<speed_t>(B1200), cfgetospeed(&t));
+}
+
+TEST(termios, cfsetspeed_EINVAL) {
+ termios t = {};
+ errno = 0;
+ // glibc seems to allow 1200 as well as B1200 here, presumably for
+ // BSD compatibility (where Bxxx == xxx, unlike Linux).
+ ASSERT_EQ(-1, cfsetspeed(&t, 123));
+ ASSERT_EQ(EINVAL, errno);
+}
+
+TEST(termios, cfmakeraw) {
+ termios t;
+ memset(&t, 0xff, sizeof(t));
+ cfmakeraw(&t);
+
+ EXPECT_EQ(0U, (t.c_iflag & (IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON)));
+ EXPECT_EQ(0U, (t.c_oflag & OPOST));
+ EXPECT_EQ(0U, (t.c_lflag & (ECHO|ECHONL|ICANON|ISIG|IEXTEN)));
+ EXPECT_EQ(0U, (t.c_cflag & PARENB));
+ EXPECT_EQ(CS8, static_cast<int>(t.c_cflag & CSIZE));
+ EXPECT_EQ(1, t.c_cc[VMIN]);
+ EXPECT_EQ(0, t.c_cc[VTIME]);
+}