Reorganize and refactor, adding integration test for common library stuff

tests/common_io_test.rs

@@ -0,0 +1,24 @@
+use common::io::{read_string, write_string};
+use std::io::Cursor;
+
+#[test]
+fn it_reads_strings() {
+    let buffer = [0x0, 0x3, b'F', b'o', b'o'];
+
+    assert_eq!(
+        read_string(&mut buffer.as_ref()).unwrap(),
+        "Foo".to_string()
+    );
+}
+
+#[test]
+fn it_writes_strings() {
+    let mut buffer = Cursor::new(Vec::new());
+
+    write_string(&mut buffer, "Foo").unwrap();
+
+    // Should have written exactly 5 bytes
+    assert_eq!(buffer.get_ref().len(), 5usize);
+
+    assert_eq!(&buffer.get_ref()[0..5], [0x0, 0x3, b'F', b'o', b'o']);
+}

tests/common_request_test.rs

@@ -0,0 +1,28 @@
+use common::request::Request;
+use std::io::Cursor;
+
+const SAMPLE: [u8; 26] = [
+    0x0, 0x3, b'F', b'o', b'o', 0x0, 0x4, b'B', b'a', b'z', b'0', 0x0, 0x5, b'x', b'x', b'x', b'y',
+    b'y', 0x0, 0x6, b'1', b'7', b'0', b'1', b'-', b'a',
+];
+
+#[test]
+fn it_reads_requests() {
+    let request = Request::from_stream(&mut Cursor::new(SAMPLE)).unwrap();
+
+    assert_eq!(request, Request::new("Foo", "Baz0", "xxxyy", "1701-a"));
+}
+
+#[test]
+fn it_writes_requests() {
+    let request = Request::new("Foo", "Baz0", "xxxyy", "1701-a");
+
+    let mut buffer = Cursor::new(Vec::new());
+
+    request.write_to_stream(&mut buffer).unwrap();
+
+    // Should have written exactly 5 bytes
+    assert_eq!(buffer.get_ref().len(), 26usize);
+
+    assert_eq!(&buffer.get_ref()[0..26], SAMPLE);
+}