Testing hash contents using RSpec

Question

I have a test like so:

it \"should not indicate backwards jumps if the checker position is not a king\" do
    board = Board.new
    game_board = board.create_te         


        

Answer 1

Just wanna add to @David's answer. You could nest and use matchers in your include hash. For example:

# Pass
expect({
  "num" => 5, 
  "a" => { 
    "b" => [3, 4, 5] 
  }
}).to include({
  "num" => a_value_between(3, 10), 
  "a" => {
    "b" => be_an(Array)
  }
})

A caveat: a nested include hash must test all keys or the test will fail, e.g.:

# Fail
expect({
  "a" => { 
    "b" => 1,
    "c" => 2
  }
}).to include({
  "a" => {
    "b" => 1
  }
})

Answer 2

Another easy way to test if the whole content is a Hash is to checkout if the content is the Hash Object itself:

it 'is to be a Hash Object' do
    workbook = {name: 'A', address: 'La'}
    expect(workbook.is_a?(Hash)).to be_truthy
end

---

For the question above we can check as follow:

expect(adjusted_jump_locations).to match(hash_including('upper_left' => true))

Answer 3

Syntax has changed for RSpec 3, but include matcher is still the one:

expect(jump_locations).to include(
  "upper_left" => true,
  "upper_right" => false,
  "lower_left" => false,
  "lower_right" => true
)

See built-in-matchers#include-matcher.

Answer 4

http://rubydoc.info/gems/rspec-expectations/RSpec/Matchers:include

It works for hashes too:

jump_locations.should include(
  "upper_left" => true,
  "upper_right" => false,
  "lower_left" => false,
  "lower_right" => true
)