Writing basic test functions in Go - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of a test function in Go?

A test function in Go checks if a piece of code works correctly by running it and verifying the results automatically.

beginner

How do you name a basic test function in Go?

A basic test function name starts with Test followed by a descriptive name, for example, TestAdd.

beginner

What package must you import to write test functions in Go?

You must import the <code>testing</code> package to write test functions in Go.

beginner

What is the signature of a basic test function in Go?

A basic test function has the signature func TestXxx(t *testing.T), where t is used to report errors.

beginner

How do you report a failure inside a Go test function?

Use t.Error(), t.Errorf(), or t.Fatal() inside the test function to report a failure.

What prefix must a Go test function name start with?

A Verify

B Check

C Run

D Test

Go test functions must start with the prefix Test to be recognized by the testing tool.

Which package do you import to write test functions in Go?

A fmt

B os

C testing

D net/http

The testing package provides tools to write and run tests in Go.

What is the type of the parameter passed to a Go test function?

A *testing.T

B int

C string

D bool

The test function receives a pointer to testing.T to report test status.

How do you indicate a test failure inside a Go test function?

A All of the above

B t.Error()

C t.Fatal()

D t.Fail()

You can use t.Fail(), t.Error(), or t.Fatal() to indicate test failures.

Which command runs tests in a Go package?

A go run

B go test

C go install

D go build

The go test command runs all test functions in the current package.

Explain how to write a basic test function in Go from start to finish.

Think about the function name, parameter, and how to report errors.

Describe the role of the *testing.T parameter in Go test functions.

Consider how the test function communicates success or failure.