moby/errdefs/helpers_test.go
Sebastiaan van Stijn 7d4b788381 errdefs: remove "ErrAlreadyExists" because it's not an error
The `ErrAlreadyExists` error is used for 304 statuses, which
is not an error-condition, so should probably not be defined
as part of the errdefs package.

This patch removes the `ErrAlreadyExists` interface, and related
helpers, as it was currently not used.

Note that a 304 status can fulfil certain use-cases, but (refering
to https://www.codetinkerer.com/2015/12/04/choosing-an-http-status-code.html)
could probably be handled by a 200 OK, unless we want to perform
caching in the client.

If we do want to use 304 statuses, perhaps we need a separate class
of "errors" for this (?).

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2019-03-21 21:25:15 +00:00

181 lines
4.6 KiB
Go

package errdefs // import "github.com/docker/docker/errdefs"
import (
"errors"
"testing"
)
var errTest = errors.New("this is a test")
type causal interface {
Cause() error
}
func TestNotFound(t *testing.T) {
if IsNotFound(errTest) {
t.Fatalf("did not expect not found error, got %T", errTest)
}
e := NotFound(errTest)
if !IsNotFound(e) {
t.Fatalf("expected not found error, got: %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestConflict(t *testing.T) {
if IsConflict(errTest) {
t.Fatalf("did not expect conflict error, got %T", errTest)
}
e := Conflict(errTest)
if !IsConflict(e) {
t.Fatalf("expected conflict error, got: %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestForbidden(t *testing.T) {
if IsForbidden(errTest) {
t.Fatalf("did not expect forbidden error, got %T", errTest)
}
e := Forbidden(errTest)
if !IsForbidden(e) {
t.Fatalf("expected forbidden error, got: %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestInvalidParameter(t *testing.T) {
if IsInvalidParameter(errTest) {
t.Fatalf("did not expect invalid argument error, got %T", errTest)
}
e := InvalidParameter(errTest)
if !IsInvalidParameter(e) {
t.Fatalf("expected invalid argument error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestNotImplemented(t *testing.T) {
if IsNotImplemented(errTest) {
t.Fatalf("did not expect not implemented error, got %T", errTest)
}
e := NotImplemented(errTest)
if !IsNotImplemented(e) {
t.Fatalf("expected not implemented error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestNotModified(t *testing.T) {
if IsNotModified(errTest) {
t.Fatalf("did not expect not modified error, got %T", errTest)
}
e := NotModified(errTest)
if !IsNotModified(e) {
t.Fatalf("expected not modified error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestUnauthorized(t *testing.T) {
if IsUnauthorized(errTest) {
t.Fatalf("did not expect unauthorized error, got %T", errTest)
}
e := Unauthorized(errTest)
if !IsUnauthorized(e) {
t.Fatalf("expected unauthorized error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestUnknown(t *testing.T) {
if IsUnknown(errTest) {
t.Fatalf("did not expect unknown error, got %T", errTest)
}
e := Unknown(errTest)
if !IsUnknown(e) {
t.Fatalf("expected unknown error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestCancelled(t *testing.T) {
if IsCancelled(errTest) {
t.Fatalf("did not expect cancelled error, got %T", errTest)
}
e := Cancelled(errTest)
if !IsCancelled(e) {
t.Fatalf("expected cancelled error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestDeadline(t *testing.T) {
if IsDeadline(errTest) {
t.Fatalf("did not expect deadline error, got %T", errTest)
}
e := Deadline(errTest)
if !IsDeadline(e) {
t.Fatalf("expected deadline error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestDataLoss(t *testing.T) {
if IsDataLoss(errTest) {
t.Fatalf("did not expect data loss error, got %T", errTest)
}
e := DataLoss(errTest)
if !IsDataLoss(e) {
t.Fatalf("expected data loss error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestUnavailable(t *testing.T) {
if IsUnavailable(errTest) {
t.Fatalf("did not expect unavaillable error, got %T", errTest)
}
e := Unavailable(errTest)
if !IsUnavailable(e) {
t.Fatalf("expected unavaillable error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}
func TestSystem(t *testing.T) {
if IsSystem(errTest) {
t.Fatalf("did not expect system error, got %T", errTest)
}
e := System(errTest)
if !IsSystem(e) {
t.Fatalf("expected system error, got %T", e)
}
if cause := e.(causal).Cause(); cause != errTest {
t.Fatalf("causual should be errTest, got: %v", cause)
}
}