Class: ArithmeticParserTest

Inherits:
Test::Unit::TestCase
  • Object
show all
Includes:
ParserTestHelper
Defined in:
lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb

Instance Method Summary collapse

Methods included from ParserTestHelper

#assert_evals_to_self, #parse

Instance Method Details

#setup ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 10

def setup
  @parser = ArithmeticParser.new
end

#test_addition ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 26

def test_addition
  assert_equal 10, parse('x + 5').eval('x' => 5)
end

#test_division ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 38

def test_division
  assert_equal 3, parse('x / 2').eval('x' => 6)
end

#test_equality ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 50

def test_equality
  assert parse('4 == 4').eval
  assert !parse('4 == 3').eval
end

#test_multiplication ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 34

def test_multiplication
  assert_equal 6, parse('x * 2').eval('x' => 3)
end

#test_number ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 14

def test_number
  assert_equal 0, parse('0').eval
  assert_equal 1, parse('1').eval
  assert_equal 123, parse('123').eval
end

#test_order_of_operations ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 42

def test_order_of_operations
  assert_equal 11, parse('1 + 2 * 3 + 4').eval
end

#test_parentheses ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 46

def test_parentheses
  assert_equal 25, parse('(5 + x) * (10 - y)').eval('x' => 0, 'y' => 5)
end

#test_subtraction ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 30

def test_subtraction
  assert_equal 0, parse('x - 5').eval('x' => 5)
end

#test_variable ⇒ Object 



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# File 'lib/mail/vendor/treetop-1.4.3/examples/lambda_calculus/arithmetic_test.rb', line 20

def test_variable
  assert_equal 0, parse('x').eval('x' => 0)
  assert_equal 3, parse('x').eval('x' => 3)
  assert_equal 10, parse('y').eval('y' => 10)
end