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Contents
dir = File.dirname(__FILE__)
require File.expand_path("#{dir}/test_helper")
require File.expand_path("#{dir}/arithmetic_node_classes")
Treetop.load File.expand_path("#{dir}/arithmetic")
class ArithmeticParserTest < Test::Unit::TestCase
include ParserTestHelper
def setup
@parser = ArithmeticParser.new
end
def test_number
assert_equal 0, parse('0').eval
assert_equal 1, parse('1').eval
assert_equal 123, parse('123').eval
end
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
def test_addition
assert_equal 10, parse('x + 5').eval('x' => 5)
end
def test_subtraction
assert_equal 0, parse('x - 5').eval('x' => 5)
end
def test_multiplication
assert_equal 6, parse('x * 2').eval('x' => 3)
end
def test_division
assert_equal 3, parse('x / 2').eval('x' => 6)
end
def test_order_of_operations
assert_equal 11, parse('1 + 2 * 3 + 4').eval
end
def test_left_to_right
assert_equal 2, parse('5 - 2 - 1').eval
end
def test_parentheses
assert_equal 25, parse('(5 + x) * (10 - y)').eval('x' => 0, 'y' => 5)
end
def test_equality
assert parse('4 == 4').eval
assert !parse('4 == 3').eval
end
end
Version data entries
201 entries across 186 versions & 30 rubygems