require 'spec_helper'

describe 'delete_values' do
  it { is_expected.not_to eq(nil) }
  it { is_expected.to run.with_params().and_raise_error(Puppet::ParseError) }
  it { is_expected.to run.with_params(1).and_raise_error(Puppet::ParseError) }
  it { is_expected.to run.with_params('one').and_raise_error(Puppet::ParseError) }
  it { is_expected.to run.with_params('one', 'two', 'three').and_raise_error(Puppet::ParseError) }
  describe 'when the first argument is not a hash' do
    it { is_expected.to run.with_params(1, 'two').and_raise_error(TypeError) }
    it { is_expected.to run.with_params('one', 'two').and_raise_error(TypeError) }
    it { is_expected.to run.with_params([], 'two').and_raise_error(TypeError) }
  end

  describe 'when deleting from a hash' do
    it { is_expected.to run.with_params({}, 'value').and_return({}) }
    it { is_expected.to run \
      .with_params({'key1' => 'value1'}, 'non-existing value') \
      .and_return({'key1' => 'value1'})
    }
    it { is_expected.to run \
      .with_params({'key1' => 'value1', 'key2' => 'value to delete'}, 'value to delete') \
      .and_return({'key1' => 'value1'})
    }
    it { is_expected.to run \
      .with_params({'key1' => 'value1', 'key2' => 'value to delete', 'key3' => 'value to delete'}, 'value to delete') \
      .and_return({'key1' => 'value1'})
    }
  end

  it "should leave the original argument intact" do
    argument = { 'key1' => 'value1', 'key2' => 'value2' }
    original = argument.dup
    result = subject.call([argument, 'value2'])
    expect(argument).to eq(original)
  end
end