Module: Homeschool::StandardizedTest::Assertions::InstanceMethods

Defined in:
lib/standardized_test.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(klass) ⇒ Object 



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# File 'lib/standardized_test.rb', line 37

def self.included(klass)
  klass.send :alias_method, :assert_equal_without_diffing, :assert_equal
  klass.send :alias_method, :assert_equal, :assert_equal_with_diffing
end

Instance Method Details

#assert_equal_with_diffing(expected, actual, message = nil) ⇒ Object 



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# File 'lib/standardized_test.rb', line 29

def assert_equal_with_diffing(expected, actual, message=nil)
  if message == :diff
    assert_block(diff(expected, actual)) {expected == actual}
  else
    assert_equal_without_diffing(expected, actual, message)
  end
end

#assert_fails(message = "") ⇒ Object 



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# File 'lib/standardized_test.rb', line 5

def assert_fails(message="")
  yield
  passed = true
rescue
ensure
  assert !passed, message
end

#diff(one, two) ⇒ Object 



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# File 'lib/standardized_test.rb', line 13

def diff(one, two)
  prefix = 0
  (0...[one, two].min_by(&:length).length).each do |i|
    if one[i] == two[i]
      prefix = i + 1
    else
      break
    end
  end
  "Expected <#{diff_format(one, prefix)}> but was <#{diff_format(two, prefix)}>"
end

#diff_format(string, prefix) ⇒ Object 



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# File 'lib/standardized_test.rb', line 25

def diff_format(string, prefix)
  prefix > 0 ? "...#{string[prefix..-1]}" : string
end