[MM-62408] Server Code Coverage with Fully Parallel Tests (#30078)

* TestPool

* Store infra

* Store tests updates

* Bump maximum concurrent postgres connections

* More infra

* channels/jobs

* channels/app

* channels/api4

* Protect i18n from concurrent access

* Replace some use of os.Setenv

* Remove debug

* Lint fixes

* Fix more linting

* Fix test

* Remove use of Setenv in drafts tests

* Fix flaky TestWebHubCloseConnOnDBFail

* Fix merge

* [MM-62408] Add CI job to generate test coverage (#30284)

* Add CI job to generate test coverage

* Remove use of Setenv in drafts tests

* Fix flaky TestWebHubCloseConnOnDBFail

* Fix more Setenv usage

* Fix more potential flakyness

* Remove parallelism from flaky test

* Remove conflicting env var

* Fix

* Disable parallelism

* Test atomic covermode

* Disable parallelism

* Enable parallelism

* Add upload coverage step

* Fix codecov.yml

* Add codecov.yml

* Remove redundant workspace field

* Add Parallel() util methods and refactor

* Fix formatting

* More formatting fixes

* Fix reporting

server/channels/app/session_test.go

@@ -19,6 +19,7 @@ import (
 )
 
 func TestGetSessionIdleTimeoutInMinutes(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t)
 	defer th.TearDown()
 
@@ -98,6 +99,7 @@ func TestGetSessionIdleTimeoutInMinutes(t *testing.T) {
 }
 
 func TestUpdateSessionOnPromoteDemote(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
@@ -151,10 +153,13 @@ func TestUpdateSessionOnPromoteDemote(t *testing.T) {
 	})
 }
 
-const hourMillis int64 = 60 * 60 * 1000
-const dayMillis int64 = 24 * hourMillis
+const (
+	hourMillis int64 = 60 * 60 * 1000
+	dayMillis  int64 = 24 * hourMillis
+)
 
 func TestApp_GetSessionLengthInMillis(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t)
 	defer th.TearDown()
 
@@ -222,7 +227,8 @@ func TestApp_GetSessionLengthInMillis(t *testing.T) {
 			UserId: model.NewId(),
 			Props: map[string]string{
 				model.UserAuthServiceIsSaml: "true",
-			}}
+			},
+		}
 		session, err := th.App.CreateSession(th.Context, session)
 		require.Nil(t, err)
 
@@ -243,6 +249,7 @@ func TestApp_GetSessionLengthInMillis(t *testing.T) {
 }
 
 func TestApp_ExtendExpiryIfNeeded(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t)
 	defer th.TearDown()
 
@@ -284,7 +291,7 @@ func TestApp_ExtendExpiryIfNeeded(t *testing.T) {
 		require.False(t, session.IsExpired())
 	})
 
-	var tests = []struct {
+	tests := []struct {
 		enabled bool
 		name    string
 		session *model.Session
@@ -365,6 +372,7 @@ func TestGetCloudSession(t *testing.T) {
 }
 
 func TestGetRemoteClusterSession(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t)
 	token := model.NewId()
 	remoteID := model.NewId()
@@ -400,6 +408,7 @@ func TestGetRemoteClusterSession(t *testing.T) {
 }
 
 func TestSessionsLimit(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
@@ -447,6 +456,7 @@ func TestSessionsLimit(t *testing.T) {
 }
 
 func TestSetExtraSessionProps(t *testing.T) {
+	mainHelper.Parallel(t)
 	th := Setup(t).InitBasic()
 	defer th.TearDown()