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fixes(issue knative#111) generically for all command groups
Explores all sub-commands from root and adds a RunE for all commands that are groups with child commands and without a RunE. The added RunE will return the correct errors when the command is called with empty sub-command or with an unknown sub-command. It will also print the command help message first. Added a gotest.tools test for root.go.
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@@ -6,6 +6,10 @@ Revision command group | |
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| Revision command group | ||
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| ``` | ||
| kn revision [flags] | ||
| ``` | ||
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| ### Options | ||
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| ``` | ||
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@@ -6,6 +6,10 @@ Service command group | |
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| Service command group | ||
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| ``` | ||
| kn service [flags] | ||
| ``` | ||
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| ### Options | ||
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| ``` | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,109 @@ | ||
| // Copyright © 2019 The Knative Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package core | ||
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| import ( | ||
| "strings" | ||
| "testing" | ||
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| "github.com/knative/client/pkg/kn/commands" | ||
| "github.com/spf13/cobra" | ||
| "gotest.tools/assert" | ||
| ) | ||
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| func TestNewKnCommand(t *testing.T) { | ||
| var rootCmd *cobra.Command | ||
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| setup := func() { | ||
| rootCmd = NewKnCommand(commands.KnParams{}) | ||
| } | ||
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| setup() | ||
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| t.Run("returns a valid root command", func(t *testing.T) { | ||
| assert.Assert(t, rootCmd != nil) | ||
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| assert.Equal(t, rootCmd.Name(), "kn") | ||
| assert.Equal(t, rootCmd.Short, "Knative client") | ||
| assert.Assert(t, strings.Contains(rootCmd.Long, "Manage your Knative building blocks:")) | ||
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| assert.Assert(t, rootCmd.DisableAutoGenTag) | ||
| assert.Assert(t, rootCmd.SilenceUsage) | ||
| assert.Assert(t, rootCmd.SilenceErrors) | ||
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| assert.Assert(t, rootCmd.RunE == nil) | ||
| }) | ||
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| t.Run("sets the output params", func(t *testing.T) { | ||
| assert.Assert(t, rootCmd.OutOrStdout() != nil) | ||
| }) | ||
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| t.Run("sets the config and kubeconfig global flags", func(t *testing.T) { | ||
| assert.Assert(t, rootCmd.PersistentFlags().Lookup("config") != nil) | ||
| assert.Assert(t, rootCmd.PersistentFlags().Lookup("kubeconfig") != nil) | ||
| }) | ||
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| t.Run("adds the top level commands: version and completion", func(t *testing.T) { | ||
| checkCommand(t, "version", rootCmd) | ||
| checkCommand(t, "completion", rootCmd) | ||
| }) | ||
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| t.Run("adds the top level group commands", func(t *testing.T) { | ||
| checkCommandGroup(t, "service", rootCmd) | ||
| checkCommandGroup(t, "revision", rootCmd) | ||
| }) | ||
| } | ||
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| func TestEmptyAndUnknownSubCommands(t *testing.T) { | ||
| var rootCmd, fakeCmd, fakeSubCmd *cobra.Command | ||
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| setup := func() { | ||
| rootCmd = NewKnCommand(commands.KnParams{}) | ||
| fakeCmd = &cobra.Command{ | ||
| Use: "fake-cmd-name", | ||
| } | ||
| fakeSubCmd = &cobra.Command{ | ||
| Use: "fake-sub-cmd-name", | ||
| } | ||
| fakeCmd.AddCommand(fakeSubCmd) | ||
| rootCmd.AddCommand(fakeCmd) | ||
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| assert.Assert(t, fakeCmd.RunE == nil) | ||
| assert.Assert(t, fakeSubCmd.RunE == nil) | ||
| } | ||
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| t.Run("deals with empty and unknown sub-commands for all group commands", func(t *testing.T) { | ||
| setup() | ||
| EmptyAndUnknownSubCommands(rootCmd) | ||
| checkCommand(t, "fake-sub-cmd-name", fakeCmd) | ||
| checkCommandGroup(t, "fake-cmd-name", rootCmd) | ||
| }) | ||
| } | ||
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| // Private | ||
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| func checkCommand(t *testing.T, name string, rootCmd *cobra.Command) { | ||
| cmd, _, err := rootCmd.Find([]string{"version"}) | ||
| assert.Assert(t, err == nil) | ||
| assert.Assert(t, cmd != nil) | ||
| } | ||
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| func checkCommandGroup(t *testing.T, name string, rootCmd *cobra.Command) { | ||
| cmd, _, err := rootCmd.Find([]string{name}) | ||
| assert.Assert(t, err == nil) | ||
| assert.Assert(t, cmd != nil) | ||
| assert.Assert(t, cmd.RunE != nil) | ||
| assert.Assert(t, cmd.HasSubCommands()) | ||
| } |