Initial commit

vendor/gopkg.in/tomb.v1/tomb_test.go

@@ -0,0 +1,114 @@
+package tomb_test
+
+import (
+	"errors"
+	"gopkg.in/tomb.v1"
+	"reflect"
+	"testing"
+)
+
+func TestNewTomb(t *testing.T) {
+	tb := &tomb.Tomb{}
+	testState(t, tb, false, false, tomb.ErrStillAlive)
+
+	tb.Done()
+	testState(t, tb, true, true, nil)
+}
+
+func TestKill(t *testing.T) {
+	// a nil reason flags the goroutine as dying
+	tb := &tomb.Tomb{}
+	tb.Kill(nil)
+	testState(t, tb, true, false, nil)
+
+	// a non-nil reason now will override Kill
+	err := errors.New("some error")
+	tb.Kill(err)
+	testState(t, tb, true, false, err)
+
+	// another non-nil reason won't replace the first one
+	tb.Kill(errors.New("ignore me"))
+	testState(t, tb, true, false, err)
+
+	tb.Done()
+	testState(t, tb, true, true, err)
+}
+
+func TestKillf(t *testing.T) {
+	tb := &tomb.Tomb{}
+
+	err := tb.Killf("BO%s", "OM")
+	if s := err.Error(); s != "BOOM" {
+		t.Fatalf(`Killf("BO%s", "OM"): want "BOOM", got %q`, s)
+	}
+	testState(t, tb, true, false, err)
+
+	// another non-nil reason won't replace the first one
+	tb.Killf("ignore me")
+	testState(t, tb, true, false, err)
+
+	tb.Done()
+	testState(t, tb, true, true, err)
+}
+
+func TestErrDying(t *testing.T) {
+	// ErrDying being used properly, after a clean death.
+	tb := &tomb.Tomb{}
+	tb.Kill(nil)
+	tb.Kill(tomb.ErrDying)
+	testState(t, tb, true, false, nil)
+
+	// ErrDying being used properly, after an errorful death.
+	err := errors.New("some error")
+	tb.Kill(err)
+	tb.Kill(tomb.ErrDying)
+	testState(t, tb, true, false, err)
+
+	// ErrDying being used badly, with an alive tomb.
+	tb = &tomb.Tomb{}
+	defer func() {
+		err := recover()
+		if err != "tomb: Kill with ErrDying while still alive" {
+			t.Fatalf("Wrong panic on Kill(ErrDying): %v", err)
+		}
+		testState(t, tb, false, false, tomb.ErrStillAlive)
+	}()
+	tb.Kill(tomb.ErrDying)
+}
+
+func testState(t *testing.T, tb *tomb.Tomb, wantDying, wantDead bool, wantErr error) {
+	select {
+	case <-tb.Dying():
+		if !wantDying {
+			t.Error("<-Dying: should block")
+		}
+	default:
+		if wantDying {
+			t.Error("<-Dying: should not block")
+		}
+	}
+	seemsDead := false
+	select {
+	case <-tb.Dead():
+		if !wantDead {
+			t.Error("<-Dead: should block")
+		}
+		seemsDead = true
+	default:
+		if wantDead {
+			t.Error("<-Dead: should not block")
+		}
+	}
+	if err := tb.Err(); err != wantErr {
+		t.Errorf("Err: want %#v, got %#v", wantErr, err)
+	}
+	if wantDead && seemsDead {
+		waitErr := tb.Wait()
+		switch {
+		case waitErr == tomb.ErrStillAlive:
+			t.Errorf("Wait should not return ErrStillAlive")
+		case !reflect.DeepEqual(waitErr, wantErr):
+			t.Errorf("Wait: want %#v, got %#v", wantErr, waitErr)
+		}
+	}
+}