[Solved] Find the error in this RSpec test: describe 'Hash test' do it 'checks key presence' do expect({a: 1, b: 2}).to include(:c) end end | Ruby

Ruby - Testing with RSpec and Minitest

Find the error in this RSpec test:

describe 'Hash test' do
  it 'checks key presence' do
    expect({a: 1, b: 2}).to include(:c)
  end
end

AThe test will pass because <code>include</code> checks values too.

BThe syntax of <code>include</code> is incorrect for hashes.

CThe test raises a runtime error.

DThe test will fail because :c is not a key in the hash.

Step-by-Step Solution

Solution:

Step 1: Understand include matcher with hashes
include checks if the hash contains the given key(s).
Step 2: Check if key :c exists
The hash {a: 1, b: 2} does not have key :c, so the test fails.
Final Answer:
The test will fail because :c is not a key in the hash. -> Option D
Quick Check:
include checks keys in hashes [OK]

Quick Trick: Use include to check keys in hashes [OK]

Common Mistakes:

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