tasdikrahman

Testing with GoMock: A Tutorial

08/16/17 by  Sergey Grebenshchikov

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This is a quick tutorial on how to test code using the GoMock mocking library and the standard library testing package testing.

GoMock is a mock framework for Go. It enjoys a somewhat official status as part of the github.com/golang organization, integrates well with the built-in testing package, and provides a flexible expectation API.

tasdikrahman

Go (Golang) Standard Library Interfaces (Selected)

This is not an exhaustive list of all interfaces in Go's standard library. I only list those I think are important. Interfaces defined in frequently used packages (like io, fmt) are included. Interfaces that have significant importance are also included.

All of the following information is based on go version go1.8.3 darwin/amd64.

tasdikrahman

diff --git a/app/jobs/check_certificate_job.rb b/app/jobs/check_certificate_job.rb
index 93fb16b..76f995b 100644
+++ b/app/jobs/check_certificate_job.rb
--- a/app/jobs/check_certificate_job.rb
@@ -10,7 +10,7 @@ class CheckCertificateJob < ApplicationJob
     Domain.all.each do |domain|
       if domain.certificate_expiring?
         Rails.logger.info("#{domain.fqdn} is expiring within the buffer period")
+        if (Figaro.env.send_expiry_notifications_to_slack == 'true') && !Figaro.env.slack_webhook_url.empty?
-        if (Figaro.env.send_expiry_notifications_to_slack == true) && !Figaro.env.slack_webhook_url.empty?

tasdikrahman

# ruby 2.2.2
# activerecord 4.2.3
# aasm 4.2.0

require 'active_record'
require 'aasm'

# Setup a mock AR table
ActiveRecord::Migration.verbose = false
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :database => ":memory:")

tasdikrahman

# app/controllers/health_check_controller.rb
class HealthCheckController < ActionController::Base
  def ping
    Rails.logger.info("bazbar, request-id: #{request.request_id}")
    render json: { success: true, errors: nil, data: 'pong' }, status: :ok
  end
end

tasdikrahman

# config/environments/development.rb
Rails.application.configure do
    config.log_formatter = LogFormatter.new
end

tasdikrahman

{"level":"INFO","progname":null,"message":"bazbar, request_id: 4967a677-ab86-4a10-8a01-ea520951cqw3"}
{"level":"INFO","progname":null,"message":"{\"method\":\"GET\",\"path\":\"/ping\",\"format\":\"*/*\",\"controller\":\"HealthCheckController\",\"action\":\"ping\",\"status\":200,\"duration\":8.36,\"view\":0.22,\"db\":0.0,\"request_time\":\"2020-07-07 16:10:17 +0530\",\"application\":\"MyApplication\",\"process_id\":7869,\"params\":\"{}\",\"rails_env\":\"development\",\"request_id\":\"4967a677-ab86-4a10-8a01-ea520951cqw3\"}"}

tasdikrahman

# app/logger/log_formatter.rb
class LogFormatter < ::Logger::Formatter
  def call(severity, time, program_name, message)
    message = '' if message.blank?
    severity = '' if message.blank?

    {
      level: severity,
      progname: program_name,
      message: message,

tasdikrahman

{"level":"INFO","progname":null,"message":"{\"method\":\"GET\",\"path\":\"/ping\",\"format\":\"*/*\",\"controller\":\"HealthCheckController\",\"action\":\"ping\",\"status\":200,\"duration\":8.36,\"view\":0.22,\"db\":0.0,\"request_time\":\"2020-07-07 16:10:17 +0530\",\"application\":\"MyApplication\",\"process_id\":7869,\"params\":\"{}\",\"rails_env\":\"development\",\"request_id\":\"4967a677-ab86-4a10-8a01-ea520951cf46\"}"}

tasdikrahman

$ curl -I localhost:3000/ping | grep -i "request"                                                                                               
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
X-Request-Id: 4967a677-ab86-4a10-8a01-ea520951cf46