Using testing.T in TestMain

Using testing.T in TestMain

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Using testing.T in TestMain
Tag : go , By : Yohan Lee
Date : November 28 2020, 01:01 AM

Hope this helps It sounds like you are looking for a BeforeEach pattern. You don't have access to a testing.T object in TestMain because this is something more of a place to do initialization before and after the test suite runs.
There are a few frameworks out there that can give you a BeforeEach cheap:
type test struct{
  ctrl *gomock.Controller
  mockFoo *MockFoo
  // ...

func beforeEach(t *testing.T) test {
  ctrl := gomock.NewController(t)
  return test {
    mockFoo: NewMockFoo(ctrl),

func TestBar(t *testing.T) {
  test := beforeEach(t)
  // ...

func TestBaz(t *testing.T) {
  test := beforeEach(t)
  // ...

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TestMain not run

Tag : go , By : Frank
Date : March 29 2020, 07:55 AM
To fix the issue you can do TestMain is only executed in test files (suffix _test.go).
Move the function to the repository_test.go file to fix this.

TestMain - no tests to run

Tag : go , By : techthumb
Date : March 29 2020, 07:55 AM
I wish this help you Odds are, your problems are around the mode value you're passing to os.Mkdir(...). You're providing 666 decimal, which is 01232 octal (or if you prefer, a permissions string of d-w--wx-wT) which I assume is not really what you're looking for.
Instead of 666, you should specify 0666 -- the leading 0 indicates your value is in octal notation.
package gcc

import (

const testoutput = "testoutput"

type testcase struct {
  inFile  string
  outFile string
  err     error

func (tc *testcase) test(t *testing.T) {
  var (
    in  = filepath.Join("testdata", tc.inFile)
    out = filepath.Join(testoutput, tc.outFile)

  if err := Compile(in, out); err != tc.err {
    t.Errorf("Compile(%q, %q) == %v; Wanted %v", in, out, err, tc.err)

func TestCompile(t *testing.T) {
  os.Mkdir(testoutput, 0666)

  tests := map[string]*testcase{
    "correct": &testcase{"correct.c", "correct_out", nil},
    "wrong":   &testcase{"wrong.c", "wrong_out", expectedError},

  for name, tc := range tests {
    t.Run(name, tc.test)

Unable to run packaged TestMain.java

Tag : java , By : Munir
Date : March 29 2020, 07:55 AM

TestMain multiple definitions found

Tag : testing , By : user119413
Date : March 29 2020, 07:55 AM

Function TestMain didn't run

Tag : go , By : adrianmooreuk
Date : January 02 2021, 06:48 AM
fixed the issue. Will look into that further The TestMain function is local to a test package.
func TestMain(m *testing.M)
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