func ExampleTest(t *testing.T) { // do some testing if err != nil { t.Fatal("Error occurred:",err) } }
func TestSomeFunction(t *testing.T) { // code here if len(someArray) == 0 { t.Fatal("Some Array is empty") } }In this code example, if the array is empty, T Fatal function will execute, causing the test to fail and stop the execution. In conclusion, the Go testing T Fatal function is used to terminate the execution of a program immediately and print the error message. It belongs to the "testing" package library in Go language. The function should only be used as a last resort when the program is unable to recover from an error.