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Create unit test illustrating unknown flag bug (#1854)
Created a unit test that tests the unknown flag error message when the unknown flag is located in different arg positions.
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@ -2692,3 +2692,46 @@ func TestFind(t *testing.T) {
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})
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}
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}
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func TestUnknownFlagShouldReturnSameErrorRegardlessOfArgPosition(t *testing.T) {
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testCases := [][]string{
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//{"--unknown", "--namespace", "foo", "child", "--bar"}, // FIXME: This test case fails, returning the error `unknown command "foo" for "root"` instead of the expected error `unknown flag: --unknown`
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{"--namespace", "foo", "--unknown", "child", "--bar"},
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{"--namespace", "foo", "child", "--unknown", "--bar"},
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{"--namespace", "foo", "child", "--bar", "--unknown"},
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{"--unknown", "--namespace=foo", "child", "--bar"},
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{"--namespace=foo", "--unknown", "child", "--bar"},
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{"--namespace=foo", "child", "--unknown", "--bar"},
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{"--namespace=foo", "child", "--bar", "--unknown"},
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{"--unknown", "--namespace=foo", "child", "--bar=true"},
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{"--namespace=foo", "--unknown", "child", "--bar=true"},
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{"--namespace=foo", "child", "--unknown", "--bar=true"},
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{"--namespace=foo", "child", "--bar=true", "--unknown"},
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}
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root := &Command{
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Use: "root",
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Run: emptyRun,
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}
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root.PersistentFlags().String("namespace", "", "a string flag")
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c := &Command{
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Use: "child",
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Run: emptyRun,
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}
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c.Flags().Bool("bar", false, "a boolean flag")
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root.AddCommand(c)
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for _, tc := range testCases {
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t.Run(strings.Join(tc, " "), func(t *testing.T) {
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output, err := executeCommand(root, tc...)
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if err == nil {
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t.Error("expected unknown flag error")
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}
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checkStringContains(t, output, "unknown flag: --unknown")
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})
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}
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}
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