| // Copyright Istio 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. |
| |
| package cmd |
| |
| import ( |
| "bytes" |
| "strings" |
| "testing" |
| ) |
| |
| import ( |
| "github.com/spf13/cobra" |
| ) |
| |
| func checkHelpForFlag(t *testing.T, gotHelpText, flag string, wantExists bool) { |
| t.Helper() |
| |
| if strings.Contains(gotHelpText, flag) != wantExists { |
| if wantExists { |
| t.Errorf("%q flag was expected but not found in help text", flag) |
| } else { |
| t.Errorf("%q flag was found in help text but not expected", flag) |
| } |
| } |
| } |
| |
| func TestHideInheritedFlags(t *testing.T) { |
| const ( |
| parentFlag0 = "parent-flag0" |
| parentFlag1 = "parent-flag1" |
| parentFlag2 = "parent-flag2" |
| childFlag2 = "child-flag2" |
| ) |
| parent := &cobra.Command{Use: "parent"} |
| _ = parent.PersistentFlags().String(parentFlag0, "", parentFlag0) |
| _ = parent.PersistentFlags().String(parentFlag1, "", parentFlag1) |
| _ = parent.PersistentFlags().String(parentFlag2, "", parentFlag2) |
| var out bytes.Buffer |
| parent.SetOut(&out) |
| parent.SetErr(&out) |
| |
| child := &cobra.Command{ |
| Use: "child", |
| Run: func(c *cobra.Command, args []string) {}, |
| } |
| _ = parent.PersistentFlags().String(childFlag2, "", childFlag2) |
| parent.AddCommand(child) |
| |
| // verify both parent flags and the child flag are visible by default |
| parent.SetArgs([]string{"child", "--help"}) |
| if err := parent.Execute(); err != nil { |
| t.Fatal(err) |
| } |
| got := out.String() |
| out.Reset() |
| checkHelpForFlag(t, got, parentFlag0, true) |
| checkHelpForFlag(t, got, parentFlag1, true) |
| checkHelpForFlag(t, got, parentFlag2, true) |
| checkHelpForFlag(t, got, childFlag2, true) |
| |
| // verify the hidden parent flag is not visible in help text |
| hideInheritedFlags(child, parentFlag1, parentFlag2) |
| if err := parent.Execute(); err != nil { |
| t.Fatal(err) |
| } |
| got = out.String() |
| out.Reset() |
| checkHelpForFlag(t, got, parentFlag0, true) |
| checkHelpForFlag(t, got, parentFlag1, false) |
| checkHelpForFlag(t, got, parentFlag1, false) |
| checkHelpForFlag(t, got, childFlag2, true) |
| } |