Running tests in Go - Cheat Sheet & Quick Revision

Recall & Review

beginner

What command runs tests in a Go module?

Use go test in the terminal inside your module directory to run all tests.

beginner

How do you name a test function in Go?

Test functions start with Test followed by a name, e.g., func TestAdd(t *testing.T).

beginner

What package must you import to write tests in Go?

Import the <code>testing</code> package to use the <code>*testing.T</code> type and test helpers.

intermediate

How do you run a specific test function in Go?

Use go test -run TestFunctionName to run only that test.

intermediate

What does t.Fail() do in a Go test?

It marks the test as failed but continues running the test function.

Which file suffix is used for Go test files?

A _testing.go

B .go

C _test.go

D .test

Go test files must end with _test.go to be recognized by go test.

What argument type does a Go test function receive?

A string

B *testing.T

C int

D bool

Test functions receive a pointer to testing.T to report test status.

How do you skip a test in Go?

A t.Fail()

B t.Stop()

C return

D t.Skip()

Calling t.Skip() skips the current test.

Which command runs tests with verbose output?

A go test -v

B go test -run

C go test -fail

D go test -skip

The -v flag shows detailed test output.

What happens if a test function calls t.Fatal()?

A Test fails and stops immediately

B Test fails but continues

C Test passes

D Test is skipped

t.Fatal() marks failure and stops the test function immediately.

Explain how to write and run a basic test in Go.

Think about file naming, function signature, and command line usage.

Describe the difference between t.Fail() and t.Fatal() in Go tests.

Consider how the test function behaves after each call.