TestMain() Pattern

setup_test.go

// Because TestMain() is an init method and should (in most cases) only be called once, one must wrap it to extend the functionality
//
// 1. This code should exist in a setup_test.go (descriptive name) file
// 2. Setup/Teardown methods along with variables/connections/assets for specific tests should be written inside of the specific test file
//    Example Filename: some_random_test.go
//    Setup Method: someRandomTestSetup()
//    Teardown Method: someRandomTestTeardown()
// 3. The Setup/Teardown methods are added to the global testMainSetup()/testMainTeardown() to centralize and organize your test suite

package proj

import (
  "log"
  "os"
  "testing"
)

func testMainSetup() {
  log.Println("testMainSetup()")
  someRandomTestSetup()
  // do stuff ....
}

func testMainTeardown() {
  log.Println("testMainTeardown()")
  someRandomTestTeardown()
  // do stuff ....
}

func TestMain(m *testing.M) {
  log.Println("TestMain")
  testMainSetup()
  res := m.Run()
  testMainTeardown()
  os.Exit(res)
}