What if 100% code coverage is a vanity metric? Learn to write fewer, better tests that focus on real-world behavior and reduce actual risk.
#1about 3 minutes
Why high test coverage creates a false sense of security
High test coverage and green builds often mask underlying issues, serving as vanity metrics that don't guarantee software reliability for users.
#2about 4 minutes
Identifying common but ineffective testing habits
Teams often test from habit rather than intent, leading to tests that mock behavior, only cover the happy path, and test what's easy instead of what's risky.
#3about 2 minutes
Closing the gap between unicorn testing and real-world failures
Testing often occurs in a "unicorn land" of perfect inputs and APIs, failing to account for real-world conditions like flaky dependencies, malformed data, and concurrency issues.
#4about 3 minutes
Shifting left to focus on behavior-driven development
Good testing should be part of requirements engineering, using practices like BDD and example mapping to define expected behavior before writing code.
#5about 3 minutes
Rethinking the traditional testing pyramid
The classic testing pyramid overemphasizes unit tests, which can create a false sense of security while ignoring critical bugs that live in integration points and business flows.
#6about 2 minutes
Adopting practical test design and risk-based prioritization
Mature test design involves techniques like boundary value analysis and decision tables, focusing on covering behavior and having the confidence to not test what doesn't matter.
#7about 5 minutes
Using BDD and example mapping to align teams
Behavior-Driven Development is a communication tool that uses concrete examples to create a shared understanding of requirements across developers, QA, and product teams.
#8about 2 minutes
How blame culture undermines your testing strategy
If testing is used to avoid blame rather than improve software, even the best tools will only automate the wrong behaviors and fail to address underlying cultural issues.
#9about 2 minutes
Actionable steps to immediately improve your testing
Start improving your testing strategy by deleting a useless test, asking risk-focused questions, modeling scenarios before coding, and spotting "cover your ass" patterns.
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Kate Passby
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