Cover indicates whether coverage is enabled.

These variables below are set at runtime (via code in testmain) to point to the equivalent functions in package internal/coverage/cfile; doing things this way allows us to have tests import internal/coverage/cfile only when -cover is in effect (as opposed to importing for all tests).

These variables below are set at runtime (via code in testmain) to point to the equivalent functions in package internal/coverage/cfile; doing things this way allows us to have tests import internal/coverage/cfile only when -cover is in effect (as opposed to importing for all tests).

These variables below are set at runtime (via code in testmain) to point to the equivalent functions in package internal/coverage/cfile; doing things this way allows us to have tests import internal/coverage/cfile only when -cover is in effect (as opposed to importing for all tests).

ImportPath is the import path of the testing binary, set by the generated main function.

TestDeps is an implementation of the testing.testDeps interface, suitable for passing to [testing.MainStart].