Why More Automation Tests Don’t Always Mean Better Coverage

Many people believe that more tests mean higher quality. It makes sense to think that more tests would lead to better coverage, right?

However, in reality, having lots of tests can make you feel more secure than you actually are.

I’ve seen automation suites with hundreds of tests, but many of them checked the same things. At first, they seemed impressive, but they missed key issues because the tests weren’t carefully planned.

Coverage isn’t about the number of tests you have. It’s really about managing risk. I focus on whether tests protect the most important parts of the system, not just increasing the test count.

Too many similar tests can slow things down and make maintenance harder without adding much value. If something changes, many tests might fail for the same reason, making it harder to find the real issues. This extra noise can quickly cause people to lose trust in the tests.

Another issue is shallow testing. If tests only check that a page loads or a button appears, they don’t offer much protection. Good tests should check results, data changes, and side effects.

When I review automation suites, I ask tough questions. What is this test really protecting? What could happen if it wasn’t there? If I can’t answer these questions clearly, I think about removing or redesigning the test.

Good automation coverage is carefully planned and adapts as the product changes. Removing tests that don’t add value is just as important as creating new ones.

The real goal isn’t to make dashboards look impressive. It’s to find problems early and reliably. When your tests focus on the biggest risks, you may need fewer tests to get better protection.