If you are using Mule Server CE. you cannot see the MUnit Coverage report. "Coverage is only available when using an EE Mule Server"

Anypoint Studio

You can solve the problem by changing the mule server run-time.
RightClient > Mule-project.xml

Re-run mUnit
RightClient> Run As > Munit

Now you can see the coverage. if you wan to see details. client on the "Generate Report"
Anypoint Studio

You can solve the problem by changing the mule server run-time.
RightClient > Mule-project.xml
Re-run mUnit
RightClient> Run As > Munit
Now you can see the coverage. if you wan to see details. client on the "Generate Report"