Function TestEmptyPositionalArgs

command_test.go:6106–6145

(t *testing.T)

}

func TestEmptyPositionalArgs(t *testing.T) {
	testCases := []struct {
		Name     string
		Args     []string
		Expected []string
	}{
		{
			Name:     "empty arg between values",
			Args:     []string{"app", "hello", "", "world"},
			Expected: []string{"hello", "", "world"},
		},
		{
			Name:     "empty arg at start",
			Args:     []string{"app", "", "hello"},
			Expected: []string{"", "hello"},
		},
		{
			Name:     "whitespace-only arg",
			Args:     []string{"app", "hello", "  ", "world"},
			Expected: []string{"hello", "  ", "world"},
		},
	}

	for _, tc := range testCases {
		t.Run(tc.Name, func(t *testing.T) {
			var args []string

			cmd := &Command{
				Action: func(_ context.Context, cmd *Command) error {
					args = cmd.Args().Slice()
					return nil
				},
			}

			err := cmd.Run(buildTestContext(t), tc.Args)
			assert.NoError(t, err)
			assert.Equal(t, tc.Expected, args)
		})
	}
}

// Regression for #2234: an empty positional arg following a flag used to be
// dropped along with every arg after it.