1 files changed, 20 insertions, 2 deletions
diff --git a/tests/armv7/thumb.rs b/tests/armv7/thumb.rs
index d9ecda6..c8b0b11 100644
--- a/tests/armv7/thumb.rs
+++ b/tests/armv7/thumb.rs
@@ -19,8 +19,8 @@ fn test_invalid_under(decoder: &InstDecoder, data: &[u8]) {
 }
 
 #[allow(dead_code)]
-fn test_display_under(decoder: &InstDecoder, data: [u8; 4], expected: &'static str) {
-    let mut reader = yaxpeax_arch::U8Reader::new(&data[..]);
+fn test_display_under(decoder: &InstDecoder, data: &[u8], expected: &'static str) {
+    let mut reader = yaxpeax_arch::U8Reader::new(data);
     let instr = match decoder.decode(&mut reader) {
         Err(e) => {
             panic!("failed to decode {:#x?}: {}", data, e)
@@ -76,6 +76,20 @@ fn test_display(data: &[u8], expected: &'static str) {
     );
 }
 
+fn test_nonconforming(data: &[u8], expected: &'static str) {
+    let conforming = InstDecoder::default_thumb().allow_nonconforming(false);
+    let nonconforming = InstDecoder::default_thumb().allow_nonconforming(true);
+
+    let mut reader = yaxpeax_arch::U8Reader::new(&data[..]);
+    let result = conforming.decode(&mut reader);
+    assert!(
+        result.is_err(),
+        "got bad result: {:?} from {:#x?}", result, data
+    );
+
+    test_display_under(&nonconforming, data, expected);
+}
+
 #[test]
 fn test_unpredictable_instructions() {
     test_invalid(&[0x80, 0xfa, 0x40, 0x00]);
@@ -1951,6 +1965,10 @@ fn test_decode_it_cases() {
         &[0xef, 0xbf],
         "iteee al"
     );
+    test_nonconforming(
+        &[0xf7, 0xbf],
+        "ittee al",
+    );
 }
 #[test]
 fn test_decode_ldm_16b_cases() {