internal/lsp/testdata/bad/badimport.go - tools - Git at Google

 package bad

 import (
 	_ "nosuchpkg" //@diag("_", "compiler", "could not import nosuchpkg (no package for import nosuchpkg)")
 )
	package bad

	import (
	_ "nosuchpkg" //@diag("_", "compiler", "could not import nosuchpkg (no package for import nosuchpkg)")
	)