diff --git a/dev/cmp/src/lib.rs b/dev/cmp/src/lib.rs
index 9afa9da..410fbee 100644
--- a/dev/cmp/src/lib.rs
+++ b/dev/cmp/src/lib.rs
@@ -152,6 +152,41 @@ pub fn cmp_output(file_path :&str) -> (usize, usize) {
 	return (pcks_with_diffs, n);
 }
 
+/// Like try, but performs an action if an "expected" error
+/// is intercepted
+#[macro_export]
+macro_rules! try_expected {
+	($expr:expr, $expected:pat, $action:tt) => (match $expr {
+		Ok(val) => val,
+		Err($expected) => {
+			$action
+		},
+		Err(e) => {
+			panic!("Unexpected error: {:?}\nExpected: {:?}", e, stringify!($type));
+		},
+	})
+}
+
+/// Ensures that a file is malformed and returns an error,
+/// but doesn't panic or crash or anything of the like
+#[macro_export]
+macro_rules! ensure_malformed {
+	($name:expr, $expected:pat) => {{
+		use std::fs::File;
+		use lewton::inside_ogg::OggStreamReader;
+		// Read the file to memory
+		let f = File::open(format!("test-assets/{}", $name)).unwrap();
+		if let Some(mut ogg_rdr) = try_expected!(OggStreamReader::new(f).map(|v| Some(v)), $expected, None) {
+			loop {
+				match try_expected!(ogg_rdr.read_dec_packet_itl(), $expected, break) {
+					Some(_) => (),
+					None => panic!("File {} decoded without errors", $name),
+				};
+			}
+		}
+	}}
+}
+
 use self::test_assets::TestAssetDef;
 
 pub fn get_asset_defs() -> [TestAssetDef; 6] {
diff --git a/dev/cmp/tests/fuzzed.rs b/dev/cmp/tests/fuzzed.rs
index a2a48b4..7e247a2 100644
--- a/dev/cmp/tests/fuzzed.rs
+++ b/dev/cmp/tests/fuzzed.rs
@@ -7,12 +7,10 @@
 // attached to this source distribution for details.
 
 extern crate test_assets;
+#[macro_use]
 extern crate cmp;
 extern crate lewton;
 
-use std::fs::File;
-use lewton::inside_ogg::OggStreamReader;
-
 macro_rules! try {
 	($expr:expr) => (match $expr {
 		$crate::std::result::Result::Ok(val) => val,
@@ -22,35 +20,6 @@ macro_rules! try {
 	})
 }
 
-macro_rules! etry {
-	($expr:expr, $expected:pat, $action:tt) => (match $expr {
-		Ok(val) => val,
-		Err($expected) => {
-			$action
-		},
-		Err(e) => {
-			panic!("Unexpected error: {:?}\nExpected: {:?}", e, stringify!($type));
-		},
-	})
-}
-
-// Ensures that a file is malformed and returns an error,
-// but doesn't panic or crash or anything of the like
-macro_rules! ensure_malformed {
-	($name:expr, $expected:pat) => {{
-		// Read the file to memory
-		let f = try!(File::open(format!("test-assets/{}", $name)));
-		if let Some(mut ogg_rdr) = etry!(OggStreamReader::new(f).map(|v| Some(v)), $expected, None) {
-			loop {
-				match etry!(ogg_rdr.read_dec_packet_itl(), $expected, break) {
-					Some(_) => (),
-					None => panic!("File {} decoded without errors", $name),
-				};
-			}
-		}
-	}}
-}
-
 #[test]
 fn test_malformed_fuzzed() {
 	println!();
@@ -69,6 +38,8 @@ fn test_malformed_fuzzed() {
 // Ensures that a file is okay
 macro_rules! ensure_okay {
 	($name:expr) => {{
+		use std::fs::File;
+		use lewton::inside_ogg::OggStreamReader;
 		// Read the file to memory
 		let f = try!(File::open(format!("test-assets/{}", $name)));
 		if let Some(mut ogg_rdr) = try!(OggStreamReader::new(f).map(|v| Some(v))) {
diff --git a/dev/cmp/tests/vals.rs b/dev/cmp/tests/vals.rs
index 32f05a3..70eb2b4 100644
--- a/dev/cmp/tests/vals.rs
+++ b/dev/cmp/tests/vals.rs
@@ -7,8 +7,14 @@
 // attached to this source distribution for details.
 
 extern crate test_assets;
+extern crate lewton;
+#[macro_use]
 extern crate cmp;
 
+use lewton::VorbisError::*;
+use lewton::OggReadError::*;
+use lewton::header::HeaderReadError::*;
+
 macro_rules! cmp_output {
 	($str:expr, $max_diff:expr) => {
 		print!("Comparing output for {} ", $str);
@@ -48,8 +54,7 @@ fn test_libnogg_vals() {
 	//cmp_output!("6ch-long-first-packet.ogg", 0);
 	cmp_output!("6ch-moving-sine-floor0.ogg", 0);
 	//cmp_output!("6ch-moving-sine.ogg", 0);
-	// TODO this is a bad invalid file
-	//cmp_output!("bad-continued-packet-flag.ogg", 0);
+	ensure_malformed!("bad-continued-packet-flag.ogg", OggError(InvalidData));
 	cmp_output!("bitrate-123.ogg", 0);
 	cmp_output!("bitrate-456-0.ogg", 0);
 	cmp_output!("bitrate-456-789.ogg", 0);
@@ -61,9 +66,7 @@ fn test_libnogg_vals() {
 	cmp_output!("noise-stereo.ogg", 0);
 	cmp_output!("partial-granule-position.ogg", 2);
 	cmp_output!("sample-rate-max.ogg", 0);
-	// TODO we are getting Error: BadHeader(HeaderBadFormat) here
-	// is that expected?
-	//cmp_output!("single-code-2bits.ogg", 0);
+	ensure_malformed!("single-code-2bits.ogg", BadHeader(HeaderBadFormat));
 	// TODO we are getting Error: BadHeader here.
 	// is that expected?
 	//cmp_output!("single-code-nonsparse.ogg", 0);