As mentioned previously, the key to improving almost everything is automation. Tests that are only run manually on developer workstations add very little value. Of course, it should be possible to run the tests on desktops, but this shouldn't be the official result because there's no guarantee that they will pass on a server (where the correct functioning matters more).
Although automation usually occurs on servers, it can be useful to automate tests that run on developer workstations too. You can do this live unit testing in Visual Studio 2017 Enterprise Edition, and in other versions, you could use a plugin such as NCrunch. This runs your tests as you work, which can be very useful if you practice test-driven development ...
