diff --git a/src/header/parsing.rs b/src/header/parsing.rs
index 5727a2b9..1186bbb6 100644
--- a/src/header/parsing.rs
+++ b/src/header/parsing.rs
@@ -1,9 +1,8 @@
 //! Utility functions for Header implementations.
 
-extern crate time;
-
 use std::str;
 use std::fmt;
+use time;
 
 /// Reads a single raw string when parsing a header
 pub fn from_one_raw_str<T: str::FromStr>(raw: &[Vec<u8>]) -> Option<T> {
@@ -83,3 +82,43 @@ pub fn tm_from_str(s: &str) -> Option<time::Tm> {
         time::strptime(s, "%c")
     }).ok()
 }
+
+#[cfg(test)]
+mod tests {
+    use time::Tm;
+    use super::tm_from_str;
+
+    const NOV_07: Tm = Tm {
+        tm_nsec: 0,
+        tm_sec: 37,
+        tm_min: 48,
+        tm_hour: 8,
+        tm_mday: 7,
+        tm_mon: 10,
+        tm_year: 94,
+        tm_wday: 0,
+        tm_isdst: 0,
+        tm_yday: 0,
+        tm_utcoff: 0,
+    };
+
+    #[test]
+    fn test_imf_fixdate() {
+        assert_eq!(tm_from_str("Sun, 07 Nov 1994 08:48:37 GMT"),
+                   Some(NOV_07));
+    }
+
+    #[test]
+    fn test_rfc_850() {
+        assert_eq!(tm_from_str("Sunday, 07-Nov-94 08:48:37 GMT"),
+                   Some(NOV_07));
+    }
+
+    #[test]
+    fn test_asctime() {
+        assert_eq!(tm_from_str("Sun Nov  7 08:48:37 1994"),
+                   Some(NOV_07));
+    }
+
+
+}
diff --git a/src/header/shared/time.rs b/src/header/shared/time.rs
deleted file mode 100644
index 90e72f1d..00000000
--- a/src/header/shared/time.rs
+++ /dev/null
@@ -1,34 +0,0 @@
-//! Provides utility function to parse HTTP header value time.
-
-extern crate time;
-
-/// Get a Tm from HTTP date formats.
-//    Prior to 1995, there were three different formats commonly used by
-//   servers to communicate timestamps.  For compatibility with old
-//   implementations, all three are defined here.  The preferred format is
-//   a fixed-length and single-zone subset of the date and time
-//   specification used by the Internet Message Format [RFC5322].
-//
-//     HTTP-date    = IMF-fixdate / obs-date
-//
-//   An example of the preferred format is
-//
-//     Sun, 06 Nov 1994 08:49:37 GMT    ; IMF-fixdate
-//
-//   Examples of the two obsolete formats are
-//
-//     Sunday, 06-Nov-94 08:49:37 GMT   ; obsolete RFC 850 format
-//     Sun Nov  6 08:49:37 1994         ; ANSI C's asctime() format
-//
-//   A recipient that parses a timestamp value in an HTTP header field
-//   MUST accept all three HTTP-date formats.  When a sender generates a
-//   header field that contains one or more timestamps defined as
-//   HTTP-date, the sender MUST generate those timestamps in the
-//   IMF-fixdate format.
-pub fn tm_from_str(s: &str) -> Option<time::Tm> {
-    time::strptime(s, "%a, %d %b %Y %T %Z").or_else(|_| {
-        time::strptime(s, "%A, %d-%b-%y %T %Z")
-    }).or_else(|_| {
-        time::strptime(s, "%c")
-    }).ok()
-}