Improve the output for these validation errors:
- Removes the short command description from the output. This information
does not provide much useful help, and distracts from the error message.
- Reduces punctuation, and
- Prefixes the error message with the binary / root-command name
(usually `docker:`) to be consistent with other similar errors.
- Adds an empty line between the error-message and the "call to action"
(`Run 'docker volume --help'...` in the example below). This helps
separating the error message and "usage" from the call-to-action.
Before this patch:
$ docker volume ls one two three
"docker volume ls" accepts no arguments.
See 'docker volume ls --help'.
Usage: docker volume ls [OPTIONS]
List volumes
$ docker volume create one two three
"docker volume create" requires at most 1 argument.
See 'docker volume create --help'.
Usage: docker volume create [OPTIONS] [VOLUME]
Create a volume
With this patch:
$ docker volume ls one two three
docker: 'docker volume ls' accepts no arguments
Usage: docker volume ls [OPTIONS]
Run 'docker volume ls --help' for more information
$ docker voludocker volume create one two three
docker: 'docker volume create' requires at most 1 argument
Usage: docker volume create [OPTIONS] [VOLUME]
SRun 'docker volume create --help' for more information
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This makes a quick pass through our tests;
Discard output/err
----------------------------------------------
Many tests were testing for error-conditions, but didn't discard output.
This produced a lot of noise when running the tests, and made it hard
to discover if there were actual failures, or if the output was expected.
For example:
=== RUN TestConfigCreateErrors
Error: "create" requires exactly 2 arguments.
See 'create --help'.
Usage: create [OPTIONS] CONFIG file|- [flags]
Create a config from a file or STDIN
Error: "create" requires exactly 2 arguments.
See 'create --help'.
Usage: create [OPTIONS] CONFIG file|- [flags]
Create a config from a file or STDIN
Error: error creating config
--- PASS: TestConfigCreateErrors (0.00s)
And after discarding output:
=== RUN TestConfigCreateErrors
--- PASS: TestConfigCreateErrors (0.00s)
Use sub-tests where possible
----------------------------------------------
Some tests were already set-up to use test-tables, and even had a usable
name (or in some cases "error" to check for). Change them to actual sub-
tests. Same test as above, but now with sub-tests and output discarded:
=== RUN TestConfigCreateErrors
=== RUN TestConfigCreateErrors/requires_exactly_2_arguments
=== RUN TestConfigCreateErrors/requires_exactly_2_arguments#01
=== RUN TestConfigCreateErrors/error_creating_config
--- PASS: TestConfigCreateErrors (0.00s)
--- PASS: TestConfigCreateErrors/requires_exactly_2_arguments (0.00s)
--- PASS: TestConfigCreateErrors/requires_exactly_2_arguments#01 (0.00s)
--- PASS: TestConfigCreateErrors/error_creating_config (0.00s)
PASS
It's not perfect in all cases (in the above, there's duplicate "expected"
errors, but Go conveniently adds "#01" for the duplicate). There's probably
also various tests I missed that could still use the same changes applied;
we can improve these in follow-ups.
Set cmd.Args to prevent test-failures
----------------------------------------------
When running tests from my IDE, it compiles the tests before running,
then executes the compiled binary to run the tests. Cobra doesn't like
that, because in that situation `os.Args` is taken as argument for the
command that's executed. The command that's tested now sees the test-
flags as arguments (`-test.v -test.run ..`), which causes various tests
to fail ("Command XYZ does not accept arguments").
# compile the tests:
go test -c -o foo.test
# execute the test:
./foo.test -test.v -test.run TestFoo
=== RUN TestFoo
Error: "foo" accepts no arguments.
The Cobra maintainers ran into the same situation, and for their own
use have added a special case to ignore `os.Args` in these cases;
https://github.com/spf13/cobra/blob/v1.8.1/command.go#L1078-L1083
args := c.args
// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
args = os.Args[1:]
}
Unfortunately, that exception is too specific (only checks for `cobra.test`),
so doesn't automatically fix the issue for other test-binaries. They did
provide a `cmd.SetArgs()` utility for this purpose
https://github.com/spf13/cobra/blob/v1.8.1/command.go#L276-L280
// SetArgs sets arguments for the command. It is set to os.Args[1:] by default, if desired, can be overridden
// particularly useful when testing.
func (c *Command) SetArgs(a []string) {
c.args = a
}
And the fix is to explicitly set the command's args to an empty slice to
prevent Cobra from falling back to using `os.Args[1:]` as arguments.
cmd := newSomeThingCommand()
cmd.SetArgs([]string{})
Some tests already take this issue into account, and I updated some tests
for this, but there's likely many other ones that can use the same treatment.
Perhaps the Cobra maintainers would accept a contribution to make their
condition less specific and to look for binaries ending with a `.test`
suffix (which is what compiled binaries usually are named as).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
internal/test/cli.go:175:14: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("no notary client available unless defined")
^
cli/command/cli.go:318:29: fmt.Errorf can be replaced with errors.New (perfsprint)
return docker.Endpoint{}, fmt.Errorf("no context store initialized")
^
cli/command/container/attach.go:161:11: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf(result.Error.Message)
^
cli/command/container/opts.go:577:16: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("--health-start-period cannot be negative")
^
cli/command/container/opts.go:580:16: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("--health-start-interval cannot be negative")
^
cli/command/container/stats.go:221:11: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("filtering is not supported when specifying a list of containers")
^
cli/command/container/attach_test.go:82:17: fmt.Errorf can be replaced with errors.New (perfsprint)
expectedErr = fmt.Errorf("unexpected error")
^
cli/command/container/create_test.go:234:40: fmt.Errorf can be replaced with errors.New (perfsprint)
return container.CreateResponse{}, fmt.Errorf("shouldn't try to pull image")
^
cli/command/container/list_test.go:150:17: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("error listing containers")
^
cli/command/container/rm_test.go:40:31: fmt.Errorf can be replaced with errors.New (perfsprint)
return errdefs.NotFound(fmt.Errorf("Error: no such container: " + container))
^
cli/command/container/run_test.go:138:40: fmt.Errorf can be replaced with errors.New (perfsprint)
return container.CreateResponse{}, fmt.Errorf("shouldn't try to pull image")
^
cli/command/image/pull_test.go:115:49: fmt.Errorf can be replaced with errors.New (perfsprint)
return io.NopCloser(strings.NewReader("")), fmt.Errorf("shouldn't try to pull image")
^
cli/command/network/connect.go:88:16: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("invalid key/value pair format in driver options")
^
cli/command/plugin/create_test.go:96:11: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("Error creating plugin")
^
cli/command/plugin/disable_test.go:32:12: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("Error disabling plugin")
^
cli/command/plugin/enable_test.go:32:12: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("failed to enable plugin")
^
cli/command/plugin/inspect_test.go:55:22: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, nil, fmt.Errorf("error inspecting plugin")
^
cli/command/plugin/install_test.go:43:17: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("Error installing plugin")
^
cli/command/plugin/install_test.go:51:17: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("(image) when fetching")
^
cli/command/plugin/install_test.go:95:17: fmt.Errorf can be replaced with errors.New (perfsprint)
return nil, fmt.Errorf("should not try to install plugin")
^
cli/command/plugin/list_test.go:35:41: fmt.Errorf can be replaced with errors.New (perfsprint)
return types.PluginsListResponse{}, fmt.Errorf("error listing plugins")
^
cli/command/plugin/remove_test.go:27:12: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("Error removing plugin")
^
cli/command/registry/login_test.go:36:46: fmt.Errorf can be replaced with errors.New (perfsprint)
return registrytypes.AuthenticateOKBody{}, fmt.Errorf("Invalid Username or Password")
^
cli/command/registry/login_test.go:44:46: fmt.Errorf can be replaced with errors.New (perfsprint)
return registrytypes.AuthenticateOKBody{}, fmt.Errorf(errUnknownUser)
^
cli/command/system/info.go:190:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("errors pretty printing info")
^
cli/command/system/prune.go:77:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf(`ERROR: The "until" filter is not supported with "--volumes"`)
^
cli/command/system/version_test.go:19:28: fmt.Errorf can be replaced with errors.New (perfsprint)
return types.Version{}, fmt.Errorf("no server")
^
cli/command/trust/key_load.go:112:22: fmt.Errorf can be replaced with errors.New (perfsprint)
return []byte{}, fmt.Errorf("could not decrypt key")
^
cli/command/trust/revoke.go:44:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("cannot use a digest reference for IMAGE:TAG")
^
cli/command/trust/revoke.go:105:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("no signed tags to remove")
^
cli/command/trust/signer_add.go:56:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("releases is a reserved keyword, please use a different signer name")
^
cli/command/trust/signer_add.go:60:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("path to a public key must be provided using the `--key` flag")
^
opts/config.go:71:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("source is required")
^
opts/mount.go:168:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("type is required")
^
opts/mount.go:172:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("target is required")
^
opts/network.go:90:11: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("network name/id is not specified")
^
opts/network.go:129:18: fmt.Errorf can be replaced with errors.New (perfsprint)
return "", "", fmt.Errorf("invalid key value pair format in driver options")
^
opts/opts.go:404:13: fmt.Errorf can be replaced with errors.New (perfsprint)
return 0, fmt.Errorf("value is too precise")
^
opts/opts.go:412:18: fmt.Errorf can be replaced with errors.New (perfsprint)
return "", "", fmt.Errorf("empty string specified for links")
^
opts/parse.go:84:37: fmt.Errorf can be replaced with errors.New (perfsprint)
return container.RestartPolicy{}, fmt.Errorf("invalid restart policy format: no policy provided before colon")
^
opts/parse.go:89:38: fmt.Errorf can be replaced with errors.New (perfsprint)
return container.RestartPolicy{}, fmt.Errorf("invalid restart policy format: maximum retry count must be an integer")
^
opts/port.go:105:13: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("hostip is not supported")
^
opts/secret.go:70:10: fmt.Errorf can be replaced with errors.New (perfsprint)
return fmt.Errorf("source is required")
^
opts/env_test.go:57:11: fmt.Errorf can be replaced with errors.New (perfsprint)
err: fmt.Errorf("invalid environment variable: =a"),
^
opts/env_test.go:93:11: fmt.Errorf can be replaced with errors.New (perfsprint)
err: fmt.Errorf("invalid environment variable: ="),
^
cli-plugins/manager/error_test.go:16:11: fmt.Errorf can be replaced with errors.New (perfsprint)
inner := fmt.Errorf("testing")
^
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add `--quiet` to the `docker image pull` subcommand that will not pull
the image quietly.
```
$ docker pull -q golang
Using default tag: latest
```
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
The validation functions to test for the number of passed arguments did not
pluralize `argument(s)`, and used `argument(s)` in all cases.
This patch adds a simple `pluralize()` helper to improve this.
Before this change, `argument(s)` was used in all cases:
$ docker container ls foobar
"docker container ls" accepts no argument(s).
$ docker network create one two
"docker network create" requires exactly 1 argument(s).
$ docker network connect
"docker network connect" requires exactly 2 argument(s).
$ docker volume create one two
"docker volume create" requires at most 1 argument(s).
After this change, `argument(s)` is properly singularized or plurarized:
$ docker container ls foobar
"docker container ls" accepts no arguments.
$ docker network create one two
"docker network create" requires exactly 1 argument.
$ docker network connect
"docker network connect" requires exactly 2 arguments.
$ docker volume create one two
"docker volume create" requires at most 1 argument.
Test cases were updated accordingly.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
These tests were caught in the crossfire of the transition to testify.
testify has a few subtle differences from the similar custom framework
it replaced:
- Error behaves differently
- Equal takes its arguments in a different order
This PR also takes the opportunity to use a few shorthands from testify,
such as Len, True, and False.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Sebastiaan van Stijn
Paweł Gronowski
knqyf263
Vincent Demeester
Daniel Nephin
Aaron Lehmann
Ignacio Capurro