99 lines
1.8 KiB
Go
99 lines
1.8 KiB
Go
package communicator
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import (
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"context"
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"errors"
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"io"
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"net"
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"testing"
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"time"
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"github.com/hashicorp/terraform/terraform"
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)
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func TestCommunicator_new(t *testing.T) {
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r := &terraform.InstanceState{
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Ephemeral: terraform.EphemeralState{
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ConnInfo: map[string]string{
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"type": "telnet",
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},
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},
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}
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if _, err := New(r); err == nil {
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t.Fatalf("expected error with telnet")
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}
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r.Ephemeral.ConnInfo["type"] = "ssh"
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if _, err := New(r); err != nil {
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t.Fatalf("err: %v", err)
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}
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r.Ephemeral.ConnInfo["type"] = "winrm"
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if _, err := New(r); err != nil {
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t.Fatalf("err: %v", err)
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}
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}
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func TestRetryFunc(t *testing.T) {
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origMax := maxBackoffDelay
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maxBackoffDelay = time.Second
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origStart := initialBackoffDelay
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initialBackoffDelay = 10 * time.Millisecond
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defer func() {
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maxBackoffDelay = origMax
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initialBackoffDelay = origStart
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}()
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// succeed on the third try
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errs := []error{io.EOF, &net.OpError{Err: errors.New("ERROR")}, nil}
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count := 0
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ctx, cancel := context.WithTimeout(context.Background(), time.Second)
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defer cancel()
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err := Retry(ctx, func() error {
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if count >= len(errs) {
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return errors.New("failed to stop after nil error")
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}
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err := errs[count]
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count++
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return err
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})
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if count != 3 {
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t.Fatal("retry func should have been called 3 times")
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}
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if err != nil {
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t.Fatal(err)
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}
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}
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func TestRetryFuncBackoff(t *testing.T) {
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origMax := maxBackoffDelay
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maxBackoffDelay = time.Second
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origStart := initialBackoffDelay
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initialBackoffDelay = 100 * time.Millisecond
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defer func() {
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maxBackoffDelay = origMax
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initialBackoffDelay = origStart
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}()
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count := 0
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ctx, cancel := context.WithTimeout(context.Background(), time.Second)
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defer cancel()
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Retry(ctx, func() error {
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count++
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return io.EOF
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})
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if count > 4 {
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t.Fatalf("retry func failed to backoff. called %d times", count)
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}
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}
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