2 files changed, 32 insertions, 0 deletions
diff --git a/test/sys/mod.rs b/test/sys/mod.rs
index 21c5817c..17649e24 100644
--- a/test/sys/mod.rs
+++ b/test/sys/mod.rs
@@ -1,3 +1,4 @@
 mod test_socket;
 mod test_termios;
 mod test_uio;
+mod test_ioctl;
diff --git a/test/sys/test_ioctl.rs b/test/sys/test_ioctl.rs
new file mode 100644
index 00000000..2654bd81
--- /dev/null
+++ b/test/sys/test_ioctl.rs
@@ -0,0 +1,31 @@
+use nix::sys::ioctl::*;
+
+// See C code for source of values for op calculations:
+// https://gist.github.com/posborne/83ea6880770a1aef332e
+
+#[test]
+fn test_op_none() {
+    assert_eq!(op_none('q' as u8, 10), 0x0000710A);
+    assert_eq!(op_none('a' as u8, 255), 0x000061FF);
+}
+
+#[test]
+fn test_op_write() {
+    assert_eq!(op_write('z' as u8, 10, 1), 0x40017A0A);
+    assert_eq!(op_write('z' as u8, 10, 512), 0x42007A0A);
+    assert_eq!(op_write('z' as u8, 10, 1 << 32), 0x40007A0A);
+}
+
+#[test]
+fn test_op_read() {
+    assert_eq!(op_read('z' as u8, 10, 1), 0x80017A0A);
+    assert_eq!(op_read('z' as u8, 10, 512), 0x82007A0A);
+    assert_eq!(op_read('z' as u8, 10, 1 << 32), 0x80007A0A);
+}
+
+#[test]
+fn test_op_read_write() {
+    assert_eq!(op_read_write('z' as u8, 10, 1), 0xC0017A0A);
+    assert_eq!(op_read_write('z' as u8, 10, 512), 0xC2007A0A);
+    assert_eq!(op_read_write('z' as u8, 10, 1 << 32), 0xC0007A0A);
+}