Testing package overview in Go - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the testing package.

Go

import [1]

Drag options to blanks, or click blank then click option'

A"testing"

B"fmt"

C"os"

D"net/http"

Attempts:

3 left

💡 Hint

Common Mistakes

Importing unrelated packages like fmt or os instead of testing.

The testing package is imported with "testing" to write tests in Go.

2fill in blank

medium

Complete the function signature for a test function.

Go

func TestExample([1] *testing.T) { }

Drag options to blanks, or click blank then click option'

Atesting

Bt

Ctest

DT

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect parameter names or types.

Test functions take a pointer to testing.T named t by convention.

3fill in blank

hard

Fix the error in the test function to fail the test on error.

Go

func TestFail(t *testing.T) {
    if err != nil {
        t.[1]("Error occurred")
    }
}

Drag options to blanks, or click blank then click option'

AErrorf

BLog

CFatalf

DFailNow

Attempts:

3 left

💡 Hint

Common Mistakes

Using Log or Errorf which do not stop the test.

t.Fatalf logs the error message and stops the test immediately.

4fill in blank

hard

Fill both blanks to create a subtest with a name and a function.

Go

t.Run([1], func([2] *testing.T) {
    // test code
})

Drag options to blanks, or click blank then click option'

A"SubTest1"

Bt

Ctest

D"Test"

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect parameter names or missing quotes for the subtest name.

t.Run takes a string name and a function with parameter t *testing.T.

5fill in blank

hard

Fill all three blanks to create a benchmark function with a loop.

Go

func BenchmarkExample([1] *testing.B) {
    for [2] := 0; [2] < [3].N; [2]++ {
        // benchmark code
    }
}

Drag options to blanks, or click blank then click option'

Ab

Bi

Dn

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter names or loop conditions.

Benchmark functions take b *testing.B. The loop uses i and runs b.N times.