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https://github.com/fluencelabs/tendermint
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a83eed104c
Our Tempfile was just a wrapper on ioutil that panicked instead of error. Our Tempdir was a less safe variant of ioutil's Tempdir.
77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package autofile
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import (
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"io/ioutil"
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"os"
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"sync/atomic"
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"syscall"
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"testing"
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"time"
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cmn "github.com/tendermint/tendermint/libs/common"
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)
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func TestSIGHUP(t *testing.T) {
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// First, create an AutoFile writing to a tempfile dir
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file, err := ioutil.TempFile("", "sighup_test")
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if err != nil {
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t.Fatalf("Error creating tempfile: %v", err)
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}
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if err := file.Close(); err != nil {
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t.Fatalf("Error closing tempfile: %v", err)
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}
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name := file.Name()
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// Here is the actual AutoFile
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af, err := OpenAutoFile(name)
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if err != nil {
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t.Fatalf("Error creating autofile: %v", err)
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}
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// Write to the file.
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_, err = af.Write([]byte("Line 1\n"))
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if err != nil {
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t.Fatalf("Error writing to autofile: %v", err)
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}
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_, err = af.Write([]byte("Line 2\n"))
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if err != nil {
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t.Fatalf("Error writing to autofile: %v", err)
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}
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// Move the file over
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err = os.Rename(name, name+"_old")
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if err != nil {
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t.Fatalf("Error moving autofile: %v", err)
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}
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// Send SIGHUP to self.
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oldSighupCounter := atomic.LoadInt32(&sighupCounter)
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syscall.Kill(syscall.Getpid(), syscall.SIGHUP)
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// Wait a bit... signals are not handled synchronously.
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for atomic.LoadInt32(&sighupCounter) == oldSighupCounter {
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time.Sleep(time.Millisecond * 10)
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}
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// Write more to the file.
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_, err = af.Write([]byte("Line 3\n"))
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if err != nil {
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t.Fatalf("Error writing to autofile: %v", err)
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}
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_, err = af.Write([]byte("Line 4\n"))
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if err != nil {
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t.Fatalf("Error writing to autofile: %v", err)
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}
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if err := af.Close(); err != nil {
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t.Fatalf("Error closing autofile")
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}
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// Both files should exist
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if body := cmn.MustReadFile(name + "_old"); string(body) != "Line 1\nLine 2\n" {
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t.Errorf("Unexpected body %s", body)
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}
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if body := cmn.MustReadFile(name); string(body) != "Line 3\nLine 4\n" {
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t.Errorf("Unexpected body %s", body)
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}
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}
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