THE SUMFIZZ LIBRARY

Software testing and reliability calculators

Explore 13 free tools for software testing and reliability. Find test flaky failure probability, test retry masking audit, test mutation score breakdown and more. Each calculator explains its inputs and method, with examples you can try using your own numbers.

THE SUMFIZZ LIBRARY

What are we working out?

13 calculators

⌕Browse all calculators →

Test flaky failure probability

Observed failure frequency is used as a fixed probability.

Software testing and reliability

Test retry masking audit

Counts are for one test run; a hidden failure is an initially failing test that later passed.

Software testing and reliability

Test mutation score breakdown

Invalid mutants are excluded from the valid-mutant score and included in the generated-mutant denominator.

Software testing and reliability

Test boundary partition inventory

Supported partition is a single inclusive continuous numeric interval.

Software testing and reliability

Test data volume sizing

Uncompressed fixed-size records; metadata, indexes and replication are excluded.

Software testing and reliability

Software defect escape rate

Use the same observation period, severity grouping and deduplicated defect definition for both lists.

Software testing and reliability

Software repair-time distribution

One already-grouped outage per row; timestamps use a shared origin.

Software testing and reliability

Software series-system reliability

Series system succeeds only when every component succeeds over the same interval.

Software testing and reliability

Software parallel redundancy reliability

Supported threshold is one: the system works if at least one component works.

Software testing and reliability

Software release canary exposure

Traffic rate and error probability stay constant within the entered stage schedule.

Software testing and reliability

Software rollback recovery budget

Sequential recovery phases; affected request rate is held constant until warm-up finishes.

Software testing and reliability

Software deployment batch scheduling

Fixed-size sequential batches; hosts in a batch deploy together, and validation occurs only between batches.

Software testing and reliability

Software test maintenance cost

Expected workload uses your observed failure frequency and handling time.

Software testing and reliability