Add breaking tests

Author: sanket1729

src/miniscript/mod.rs

@@ -1136,4 +1136,14 @@ mod tests {
         SegwitMs::parse_insane(&script).unwrap_err();
         SegwitMs::parse_with_ext(&script, &ExtParams::allow_all()).unwrap();
     }
+
+    #[test]
+    fn tr_multi_a_j_wrapper() {
+        // Reported by darosior
+        // `multi_a` fragment may require the top stack element to be the empty vector.
+        // Previous version had incorrectly copied this code from multi.
+        type TapMs = Miniscript<String, Tap>;
+        let ms_str = TapMs::from_str_insane("j:multi_a(1,A,B,C)");
+        assert!(ms_str.is_err());
+    }
 }

tests/test_desc.rs

@@ -395,6 +395,10 @@ fn test_descs(cl: &Client, testdata: &TestData) {
     let result = test_desc_satisfy(cl, testdata, "tr(X!,{pk(X1!),pk(X2!)})");
     assert_eq!(result, Err(DescError::PsbtFinalizeError));
 
+    // Test 10: Test taproot desc with ZERO known keys
+    let result = test_desc_satisfy(cl, testdata, "tr(X!,j:multi_a(3,X1!,X2,X3,X4))");
+    assert_eq!(result, Err(DescError::DescParseError));
+
     // Test 11: Test taproot with insufficient known keys
     let result = test_desc_satisfy(cl, testdata, "tr(X!,{pk(X1!),multi_a(3,X2!,X3,X4)})");
     assert_eq!(result, Err(DescError::PsbtFinalizeError));