1.5.0 instruments and reports on the unit test project in addition to the assembly under test.

With the exact same command-line, coverlet console 1.5.0 is instrumenting and reporting coverage for the unit test project itself, where in 1.4.1 it only instrumented the project under test as expected.

coverlet TestProject1/bin/Debug/netcoreapp2.1/TestProject1.dll --target "dotnet" --targetargs "test --no-build"

coverlet console 1.4.1

Calculating coverage result...
  Generating report '/projects/customer/coverage.json'
+-------------------------+--------+--------+--------+
| Module                 | Line   | Branch | Method |
+-------------------------+--------+--------+--------+
| customer              | 29%    | 23.1%  | 47.1%  |
+-------------------------+--------+--------+--------+

+---------+--------+--------+--------+
|         | Line   | Branch | Method |
+---------+--------+--------+--------+
| Total        | 29%    | 23.1%  | 47.1%  |
+---------+--------+--------+--------+
| Average  | 29%    | 23.1%  | 47.1%  |
+---------+--------+--------+--------+

coverlet console 1.5.0

Calculating coverage result...
  Generating report '/projects/customer/coverage.json'
+-------------------------+-------+--------+--------+
| Module                  | Line  | Branch | Method |
+-------------------------+-------+--------+--------+
| customer | 29%   | 23.1%  | 47.1%  |
+-------------------------+-------+--------+--------+
| TestProject1            | 81.6% | 16.7%  | 71.4%  |
+-------------------------+-------+--------+--------+

+---------+--------+--------+--------+
|         | Line   | Branch | Method |
+---------+--------+--------+--------+
| Total   | 36.7%  | 22.9%  | 48.3%  |
+---------+--------+--------+--------+
| Average | 18.35% | 11.45% | 24.15% |
+---------+--------+--------+--------+

[tonerdo]

@derhally @MarcoRossignoli That error is because Coverlet is unconditionally trying to restore the pdb file for an assembly that has it embedded. I’m also in agreement with @derhally with respect to including test assemblies by default and I’ll work on putting this feature behind a flag that will be turned off by default. Will address this weekend

[derhally]

I don’t agree. I personally never want to instrument my unit tests. My unit test runner tells me which tests are run, skipped or failed. That should not be the default behavior of coverlet. I expect that most people care only about the SUT not what is testing the SUT.

At this point I cannot use coverlet 2.5. or later. I’m having to exclude 5 or 6 external assemblies from one project. I work with dozens of projects and having to do this on each one and everytime I add a 3rd party nuget package is quite silly.