Running all tests for a multi-binary project - unit-testing

Question

Consider a multi binary project with the following structure.
.
├── bin1
│   ├── config
│   │   ├── config.go
│   │   └── config_test.go
│   └── utils
│   ├── utils.go
│   └── utils_test.go
├── bin2
│   ├── config
│   │   ├── config.go
│   │   └── config_test.go
│   └── utils
│   ├── utils.go
│   └── utils_test.go
├── cmd
│   ├── bin1
│   │   └── bin1.go
│   ├── bin2
│   │   └── bin2.go
│   └── bin3
│   └── bin3.go
├── go.mod
├── go.sum
└── shared
├── db
│   ├── db.go
│   └── db_test.go
├── model
│   ├── modela.go
│   ├── modela_test.go
│   ├── modelb.go
│   └── modelb_test.go
└── utils
├── utils.go
└── utils_test.go
This project has three binaries bin1, bin2 and bin3. Packages in the /shared directory (e.g. package shareddb, sharedmodel and sharedutils) are shared with binary specific packages (e.g. package bin1config, bin1utils in /bin1 directory and package bin2config, bin2utils in /bin2 directory).
How can we run
all the unit tests in this project altogether?
all the tests in a package (e.g. in shared/model)?
each tests separately?
I attempted the following.
Running go test from the project root resulted in no Go files in /projectroot.

Answer 1

# run all tests
go test ./...
# run all tests under a specific directory (including subdiretories)
go test ./bin2/...
# test package located in specific directory
go test ./shared/model
# test package that has specific import path
go test projectroot/shared/model
# test package in current working directory
go test
# ditto
go test .
# test package in parent directory
go test ..
# run a specific test within the package under test
go test -run=X
# run a specific sub-test within the package under test
go test -run=X/Y
For more details on the go test command, see Test packages.
For more details on the [packages] argument to go test, see Packge lists and patters.
For more details on the testing flags, see Testing flags.