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package tests
import (
"fmt"
"testing"
"time"
)
var expectedI int
func checkI(t *testing.T, i int) {
if i != expectedI {
t.Errorf("expected %d, got %d", expectedI, i)
}
expectedI++
}
func TestDefer(t *testing.T) {
expectedI = 1
defer func() {
checkI(t, 2)
testDefer1(t)
checkI(t, 6)
}()
checkI(t, 1)
}
func testDefer1(t *testing.T) {
defer func() {
checkI(t, 4)
time.Sleep(0)
checkI(t, 5)
}()
checkI(t, 3)
}
func TestPanic(t *testing.T) {
expectedI = 1
defer func() {
checkI(t, 8)
err := recover()
time.Sleep(0)
checkI(t, err.(int))
}()
checkI(t, 1)
testPanic1(t)
checkI(t, -1)
}
func testPanic1(t *testing.T) {
defer func() {
checkI(t, 6)
time.Sleep(0)
err := recover()
checkI(t, err.(int))
panic(9)
}()
checkI(t, 2)
testPanic2(t)
checkI(t, -2)
}
func testPanic2(t *testing.T) {
defer func() {
checkI(t, 5)
}()
checkI(t, 3)
time.Sleep(0)
checkI(t, 4)
panic(7)
checkI(t, -3)
}
func TestPanicAdvanced(t *testing.T) {
expectedI = 1
defer func() {
recover()
checkI(t, 3)
testPanicAdvanced2(t)
checkI(t, 6)
}()
testPanicAdvanced1(t)
checkI(t, -1)
}
func testPanicAdvanced1(t *testing.T) {
defer func() {
checkI(t, 2)
}()
checkI(t, 1)
panic("")
}
func testPanicAdvanced2(t *testing.T) {
defer func() {
checkI(t, 5)
}()
checkI(t, 4)
}
func TestSelect(t *testing.T) {
expectedI = 1
a := make(chan int)
b := make(chan int)
c := make(chan int)
go func() {
select {
case <-a:
case <-b:
}
}()
go func() {
checkI(t, 1)
a <- 1
select {
case b <- 1:
checkI(t, -1)
default:
checkI(t, 2)
}
c <- 1
}()
<-c
checkI(t, 3)
}
func TestCloseAfterReceiving(t *testing.T) {
ch := make(chan struct{})
go func() {
<-ch
close(ch)
}()
ch <- struct{}{}
}
func TestDeferWithBlocking(t *testing.T) {
ch := make(chan struct{})
go func() { ch <- struct{}{} }()
defer func() { <-ch }()
fmt.Print("")
return
}
|
