[MM-13833] Configured unit tests to log through t.Log (#10272)

* Rerouted the unit test logs through t.Log

* resolving merge confilvts

* Update testing.go

* Update helper_test.go

* Added godocs for NewTestingLogger

* Added go docs for NewTestingLogger

* Resolving conflicts

app/webhook_test.go

@@ -20,7 +20,7 @@ import (
 )
 
 func TestCreateIncomingWebhookForChannel(t *testing.T) {
-	th := Setup().InitBasic()
+	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
 	type TestCase struct {
@@ -151,7 +151,7 @@ func TestCreateIncomingWebhookForChannel(t *testing.T) {
 }
 
 func TestUpdateIncomingWebhook(t *testing.T) {
-	th := Setup().InitBasic()
+	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
 	type TestCase struct {
@@ -289,7 +289,7 @@ func TestUpdateIncomingWebhook(t *testing.T) {
 }
 
 func TestCreateWebhookPost(t *testing.T) {
-	th := Setup().InitBasic()
+	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
 	th.App.UpdateConfig(func(cfg *model.Config) { *cfg.ServiceSettings.EnableIncomingWebhooks = true })
@@ -478,7 +478,7 @@ func TestSplitWebhookPost(t *testing.T) {
 }
 
 func TestCreateOutGoingWebhookWithUsernameAndIconURL(t *testing.T) {
-	th := Setup().InitBasic()
+	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
 	outgoingWebhook := model.OutgoingWebhook{
@@ -597,7 +597,7 @@ func TestTriggerOutGoingWebhookWithUsernameAndIconURL(t *testing.T) {
 		return testCasesOutgoing
 	}
 
-	th := Setup().InitBasic()
+	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
 	th.App.UpdateConfig(func(cfg *model.Config) {
@@ -668,7 +668,7 @@ func (r InfiniteReader) Read(p []byte) (n int, err error) {
 }
 
 func TestDoOutgoingWebhookRequest(t *testing.T) {
-	th := Setup().InitBasic()
+	th := Setup(t).InitBasic()
 	defer th.TearDown()
 
 	th.App.UpdateConfig(func(cfg *model.Config) {