cdk/.cargo/mutants.toml

# Mutation Testing Configuration for CDK
# Phase 1: Focus on cashu crate only

# Start with cashu crate only - exclude other crates initially
exclude_globs = [
    "crates/cdk-*/**",  # Exclude other crates initially
    "**/tests/**",      # Don't mutate test code
    "**/benches/**",    # Don't mutate benchmarks
]

# Reasonable timeout to catch hangs (5 minutes minimum)
minimum_test_timeout = 300

# Skip specific mutations that cause infinite loops
# These mutations create scenarios where loops never terminate or recursive functions never return.
# Format: "file.rs:line.*pattern"
exclude_re = [
    # dhke.rs:61 - Mutating counter += to *= causes infinite loop (counter stays 0)
    "crates/cashu/src/dhke.rs:61:.*replace \\+= with \\*=",

    # amount.rs:108 - Mutating % to / in split causes infinite loop
    "crates/cashu/src/amount.rs:108:.*replace % with /",

    # amount.rs:100 - split() returning empty vec causes infinite loops
    "crates/cashu/src/amount.rs:100:.*replace.*split.*with vec!\\[\\]",
    "crates/cashu/src/amount.rs:100:.*replace.*split.*with vec!\\[Default",

    # amount.rs:203 - checked_add returning Some(Default/0) causes infinite increment loops
    "crates/cashu/src/amount.rs:203:.*replace.*checked_add.*with Some\\(Default",

    # amount.rs:226 - try_sum returning Ok(Default/0) causes infinite loops
    "crates/cashu/src/amount.rs:226:.*replace.*try_sum.*with Ok\\(Default",

    # amount.rs:288 - From<u64> returning Default/0 causes infinite loops
    "crates/cashu/src/amount.rs:288:.*replace.*from.*with Default",

    # amount.rs:331 - Sub returning Default/0 causes infinite loops
    "crates/cashu/src/amount.rs:331:.*replace.*sub.*with Default",

    # Trivial getters - not worth testing
    "FeeAndAmounts::fee",
    "FeeAndAmounts::amounts",

    # Trivial trait implementations - unrealistic mutations
    "crates/cashu/src/amount.rs.*impl From<&u64> for Amount.*from",
    "crates/cashu/src/amount.rs.*impl AsRef<u64> for Amount.*as_ref",
    "crates/cashu/src/amount.rs.*impl std::ops::Mul for Amount.*mul",
    "crates/cashu/src/amount.rs.*impl std::ops::Div for Amount.*div",
    "crates/cashu/src/amount.rs.*impl From<Amount> for u64.*from",
    "crates/cashu/src/amount.rs.*impl Default for Amount",
    "crates/cashu/src/amount.rs.*impl Default for &Amount",
    "crates/cashu/src/amount.rs.*impl.*Display for Amount.*fmt",
]