Extend the integration tests to test failure conditions

[sanket1729]

In #309, we added integration tests to check descriptor satisfaction logic. We should extend the test_desc_satisfy

rust-miniscript/integration_test/src/test_desc.rs

Line 43 in 75ff627

pub fn test_desc_satisfy(cl: &Client, testdata: &TestData, desc: &str) -> Witness {

.
to return result. And test misc failure test cases for descriptors.

• Add tests for testing each fragment of miniscript from bitcoin reference: bitcoin.sipa.be/miniscript. This can be a bit challenging but is a good resource to get started and understand miniscript hands-on.
• Add tests for failure paths
• Add tests for various sighash modes.

[dunxen]

Working on this.

[kanishk779]

@dunxen could you please let me work on this issue, as I have started understanding the codebase and was looking forward to contributing to the organisation in the coming summer.

[dunxen]

Hi @kanishk779. Yes, of course! I have not done too much yet. 🙂

[sanket1729]

This was merged in #429