Ensure args are equal
assert_equal  arg1 (anything), arg2 (anything)
Raises an exception if both arguments aren’t equal.
Introduced in v2.8
Examples
 
  | # Example 1 | 
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assert_equal 1, 1
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# Simple assertions
 
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  | # Example 2 | 
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assert_equal 1 + 1, 2
assert_equal [:a, :b, :c].size,  3
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# More interesting assertions
# Ensure that arithmetic is sane!
# ensure lists can be correctly counted
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  | # Example 3 | 
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assert_equal 3, 5, "something is seriously wrong!"
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# Add messages to the exceptions
 
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