Testing and Benchmarking (Challenge)

Introduction

This challenge aims to demonstrate the importance of unit testing and benchmarking in writing principled Go programs. The testing package provides the tools needed to write unit tests, and the go test command runs tests.

Skills Graph

Testing and Benchmarking

The problem to be solved in this challenge is to test and benchmark a simple implementation of an integer minimum function named IntMin.

Requirements

• The testing package must be imported.
• The IntMin function must take two integer parameters and return an integer.
• The TestIntMinBasic function must test the IntMin function for basic input values.
• The TestIntMinTableDriven function must test the IntMin function using a table-driven style.
• The BenchmarkIntMin function must benchmark the IntMin function.

Example

## Run all tests in the current project in verbose mode.
$ go test -v
== RUN   TestIntMinBasic
--- PASS: TestIntMinBasic (0.00s)
=== RUN   TestIntMinTableDriven
=== RUN   TestIntMinTableDriven/0,1
=== RUN   TestIntMinTableDriven/1,0
=== RUN   TestIntMinTableDriven/2,-2
=== RUN   TestIntMinTableDriven/0,-1
=== RUN   TestIntMinTableDriven/-1,0
--- PASS: TestIntMinTableDriven (0.00s)
    --- PASS: TestIntMinTableDriven/0,1 (0.00s)
    --- PASS: TestIntMinTableDriven/1,0 (0.00s)
    --- PASS: TestIntMinTableDriven/2,-2 (0.00s)
    --- PASS: TestIntMinTableDriven/0,-1 (0.00s)
    --- PASS: TestIntMinTableDriven/-1,0 (0.00s)
PASS
ok  	examples/testing-and-benchmarking	0.023s

## Run all benchmarks in the current project. All tests
## are run prior to benchmarks. The `bench` flag filters
## benchmark function names with a regexp.
$ go test -bench=.
goos: darwin
goarch: arm64
pkg: examples/testing
BenchmarkIntMin-8 1000000000 0.3136 ns/op
PASS
ok  	examples/testing-and-benchmarking	0.351s

Summary

This challenge demonstrated how to write unit tests and benchmark functions using the testing package in Go. The TestIntMinBasic function tested the IntMin function for basic input values, while the TestIntMinTableDriven function used a table-driven style to test the IntMin function. The BenchmarkIntMin function benchmarked the IntMin function to measure its performance.