require "spec_helper"
require "hamster/list"

describe Hamster::List do
  describe "#index" do
    context "on a really big list" do
      it "doesn't run out of stack" do
        expect { Hamster.interval(0, STACK_OVERFLOW_DEPTH).index(nil) }.not_to raise_error
      end
    end

    [
      [[], "A", nil],
      [[], nil, nil],
      [["A"], "A", 0],
      [["A"], "B", nil],
      [["A"], nil, nil],
      [["A", "B", nil], "A", 0],
      [["A", "B", nil], "B", 1],
      [["A", "B", nil], nil, 2],
      [["A", "B", nil], "C", nil],
      [[2], 2, 0],
      [[2], 2.0, 0],
      [[2.0], 2.0, 0],
      [[2.0], 2, 0],
    ].each do |values, item, expected|
      context "looking for #{item.inspect} in #{values.inspect}" do
        it "returns #{expected.inspect}" do
          if RUBY_ENGINE == 'jruby' && RUBY_VERSION <= '2.2.2' && values[0].is_a?(Fixnum) && item.is_a?(Float)
            skip "On JRuby, Enumerable#find_index doesn't test equality properly"
          else
            expect(L[*values].index(item)).to eq(expected)
          end
        end
      end
    end
  end
end