2 files changed, 196 insertions, 0 deletions
diff --git a/third_party/rust/podio/tests/bytes.rs b/third_party/rust/podio/tests/bytes.rs
new file mode 100644
index 0000000000..493d2d47b0
--- /dev/null
+++ b/third_party/rust/podio/tests/bytes.rs
@@ -0,0 +1,139 @@
+extern crate podio;
+
+use std::io;
+use podio::{LittleEndian, BigEndian};
+use podio::{ReadPodExt, WritePodExt};
+
+#[test]
+fn write_be() {
+    let buf: &mut [u8] = &mut [0u8; 8];
+    let mut writer = io::Cursor::new(buf);
+
+    writer.set_position(0);
+    writer.write_u64::<BigEndian>(0x01_23_45_67_89_ab_cd_ef).unwrap();
+    assert_eq!(&writer.get_ref()[0..8], &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef]);
+
+    writer.set_position(0);
+    writer.write_u32::<BigEndian>(0x01_23_45_67).unwrap();
+    assert_eq!(&writer.get_ref()[0..4], &[0x01, 0x23, 0x45, 0x67]);
+
+    writer.set_position(0);
+    writer.write_u16::<BigEndian>(0x01_23).unwrap();
+    assert_eq!(&writer.get_ref()[0..2], &[0x01, 0x23]);
+}
+
+#[test]
+fn write_le() {
+    let buf: &mut [u8] = &mut [0u8; 8];
+    let mut writer = io::Cursor::new(buf);
+
+    writer.set_position(0);
+    writer.write_u64::<LittleEndian>(0x01_23_45_67_89_ab_cd_ef).unwrap();
+    assert_eq!(&writer.get_ref()[0..8], &[0xef, 0xcd, 0xab, 0x89, 0x67, 0x45, 0x23, 0x01]);
+
+    writer.set_position(0);
+    writer.write_u32::<LittleEndian>(0x01_23_45_67).unwrap();
+    assert_eq!(&writer.get_ref()[0..4], &[0x67, 0x45, 0x23, 0x01]);
+
+    writer.set_position(0);
+    writer.write_u16::<LittleEndian>(0x01_23).unwrap();
+    assert_eq!(&writer.get_ref()[0..2], &[0x23, 0x01]);
+}
+
+#[test]
+fn write_octet() {
+    let buf: &mut [u8] = &mut [0u8; 8];
+    let mut writer = io::Cursor::new(buf);
+
+    writer.set_position(0);
+    writer.write_u8(0x01).unwrap();
+    assert_eq!(&writer.get_ref()[0..1], &[0x01]);
+}
+
+#[test]
+fn write_float() {
+    let buf: &mut [u8] = &mut [0u8; 8];
+    let mut writer = io::Cursor::new(buf);
+
+    writer.set_position(0);
+    writer.write_f32::<LittleEndian>(10.12f32).unwrap();
+    assert_eq!(&writer.get_ref()[0..4], &[0x85, 0xEB, 0x21, 0x41]);
+
+    writer.set_position(0);
+    writer.write_f32::<BigEndian>(10.12f32).unwrap();
+    assert_eq!(&writer.get_ref()[0..4], &[0x41, 0x21, 0xEB, 0x85]);
+
+    writer.set_position(0);
+    writer.write_f64::<LittleEndian>(10.12f64).unwrap();
+    assert_eq!(&writer.get_ref()[0..8], &[0x3D, 0x0A, 0xD7, 0xA3, 0x70, 0x3D, 0x24, 0x40]);
+
+    writer.set_position(0);
+    writer.write_f64::<BigEndian>(10.12f64).unwrap();
+    assert_eq!(&writer.get_ref()[0..8], &[0x40, 0x24, 0x3D, 0x70, 0xA3, 0xD7, 0x0A, 0x3D]);
+}
+
+#[test]
+fn read_be() {
+    let buf: &[u8] = &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
+    let mut reader = io::Cursor::new(buf);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u64::<BigEndian>().unwrap(), 0x0123456789abcdef);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u32::<BigEndian>().unwrap(), 0x01234567);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u16::<BigEndian>().unwrap(), 0x0123);
+}
+
+#[test]
+fn read_le() {
+    let buf: &[u8] = &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
+    let mut reader = io::Cursor::new(buf);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u64::<LittleEndian>().unwrap(), 0xefcdab8967452301);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u32::<LittleEndian>().unwrap(), 0x67452301);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u16::<LittleEndian>().unwrap(), 0x2301);
+}
+
+#[test]
+fn read_octet() {
+    let buf: &[u8] = &[0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef];
+    let mut reader = io::Cursor::new(buf);
+
+    reader.set_position(0);
+    assert_eq!(reader.read_u8().unwrap(), 0x01);
+}
+
+#[test]
+fn read_float() {
+    let mut buf: &[u8] = &[0x41, 0x21, 0xEB, 0x85];
+    assert_eq!(buf.read_f32::<BigEndian>().unwrap(), 10.12f32);
+
+    let mut buf: &[u8] = &[0x85, 0xEB, 0x21, 0x41];
+    assert_eq!(buf.read_f32::<LittleEndian>().unwrap(), 10.12f32);
+
+    let mut buf: &[u8] = &[0x40, 0x24, 0x3D, 0x70, 0xA3, 0xD7, 0x0A, 0x3D];
+    assert_eq!(buf.read_f64::<BigEndian>().unwrap(), 10.12f64);
+
+    let mut buf: &[u8] = &[0x3D, 0x0A, 0xD7, 0xA3, 0x70, 0x3D, 0x24, 0x40];
+    assert_eq!(buf.read_f64::<LittleEndian>().unwrap(), 10.12f64);
+}
+
+#[test]
+fn read_exact() {
+    let mut buf: &[u8] = &[1, 2, 3, 4, 5, 6, 7, 8];
+    assert_eq!(buf.read_exact(2).unwrap(), [1,2]);
+    assert_eq!(buf.read_exact(1).unwrap(), [3]);
+    assert_eq!(buf.read_exact(0).unwrap(), []);
+    assert_eq!(buf.read_exact(5).unwrap(), [4,5,6,7,8]);
+    assert_eq!(buf.read_exact(0).unwrap(), []);
+    assert!(buf.read_exact(1).is_err());
+    assert_eq!(buf.read_exact(0).unwrap(), []);
+}
diff --git a/third_party/rust/podio/tests/io.rs b/third_party/rust/podio/tests/io.rs
new file mode 100644
index 0000000000..fba75625a4
--- /dev/null
+++ b/third_party/rust/podio/tests/io.rs
@@ -0,0 +1,57 @@
+extern crate podio;
+
+use std::io::{self, Read};
+use podio::ReadPodExt;
+
+struct TestReader {
+    state: Option<io::Result<usize>>,
+}
+
+impl TestReader {
+    fn new(first_return: io::Result<usize>) -> TestReader {
+        TestReader { state: Some(first_return) }
+    }
+
+    fn get(&mut self) -> io::Result<u32> {
+        self.read_u32::<podio::LittleEndian>()
+    }
+
+    fn test(first_return: io::Result<usize>) -> io::Result<u32> {
+        TestReader::new(first_return).get()
+    }
+}
+
+impl Read for TestReader {
+    fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
+        match self.state.take().unwrap_or(Ok(1)) {
+            Ok(n) => {
+                for i in buf.iter_mut().take(n) {
+                    *i = 0xA5;
+                }
+                Ok(n)
+            },
+            e @ Err(..) => e,
+        }
+    }
+}
+
+#[test]
+fn interrupted() {
+    // Getting an io::ErrorKind::Interrupted should be retried, and thus succeed
+    let first_read = Err(io::Error::new(io::ErrorKind::Interrupted, "Interrupted"));
+    assert_eq!(TestReader::test(first_read).unwrap(), 0xA5A5A5A5);
+}
+
+#[test]
+fn eof() {
+    // Getting a Ok(0) implies an unexpected EOF
+    let first_read = Ok(0);
+    assert!(TestReader::test(first_read).is_err());
+}
+
+#[test]
+fn err() {
+    // Getting any other error is still an error
+    let first_read = Err(io::Error::new(io::ErrorKind::Other, "Other"));
+    assert!(TestReader::test(first_read).is_err());
+}