bet

## BET unit tests. # # https://github.com/paulmoore/BET # http://paulmoore.mit-license.org # TODO # * association tests # * precedence tests # * prefix, postfix, and infix tests # * argument count tests # * custom operator tests # * custom function tests require('source-map-support').install() {evaluate, evaluateSync} = require './BET' {pow, sqrt, floor, ceil, abs, min, max} = Math str2eqn = (str) -> eqn = str.split ' ' for token, i in eqn num = parseFloat token eqn[i] = num unless typeof num isnt 'number' or isNaN num eqn evalfail = (eqn, actual, expected) -> "Expression did not evaluate correctly: #{eqn.join ' '} = #{expected} ~= #{actual}" evalcheck = (test, eqn, actual, expected) -> test.equals actual, expected, evalfail(eqn, actual, expected) module.exports = 'test evaluating null results in error': (test) -> test.expect 2 evaluate null, (e, r) -> test.ok isNaN(r), "Expression is not NaN: #{r}" test.ok e?, 'Expression did not produce an error' test.done() 'test evaluating empty array results in NaN and and error': (test) -> test.expect 2 evaluate [], (e, r) -> test.ok isNaN(r), "Expression is not NaN: ${r}" test.ok e?, 'Expression did not produce an error' test.done() 'test evaluate sync does not error and returns proper value': (test) -> test.expect 1 eqn = str2eqn '1 + 2' r = evaluateSync eqn evalcheck test, eqn, r, 1 + 2 test.done() 'test evaluate sync throws an error on invalid equation': (test) -> test.expect 1 eqn = str2eqn '+ * 1 x' try evaluateSync eqn test.ok no, 'Expression did not produce an error' catch e test.ok e? test.done() 'test evaluating single number results in that number': (test) -> test.expect 2 evaluate [1], (e, r) -> test.ifError e test.equal r, 1, 'Expression did not evaluate correctly' test.done() 'test basic addition operator': (test) -> test.expect 2 eqn = str2eqn '1 + -2 + 3 + -4 + 5 + -6' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (1 + -2 + 3 + -4 + 5 + -6) test.done() 'test basic subtraction operator': (test) -> test.expect 2 eqn = str2eqn '1 - -2 - 3 - -4 - 5 - -6' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (1 - -2 - 3 - -4 - 5 - -6) test.done() 'test basic multiplication operator': (test) -> test.expect 2 eqn = str2eqn '1 * 2 * -3 * 4 * -5' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (1 * 2 * -3 * 4 * -5) test.done() 'test basic division operator': (test) -> test.expect 2 eqn = str2eqn 'ceil ( 10 / 2 / 3 * 10 / -1 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (ceil(10 / 2 / 3 * 10 / -1 )) test.done() 'test basic integer division operator': (test) -> test.expect 2 eqn = str2eqn '10 i/ 2 i/ 2' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (floor(floor(10 / 2) / 2)) test.done() 'test basic remainder operator': (test) -> test.expect 2 eqn = str2eqn '-5 % 2' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (-5 % 2) test.done() 'test basic modulus operator': (test) -> test.expect 2 eqn = str2eqn '-5 mod 2' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (5 % 2) test.done() 'test basic negation operator': (test) -> test.expect 2 eqn = str2eqn '2 ^ neg 3' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (1 / 8) test.done() 'test basic exponent operator': (test) -> test.expect 2 eqn = str2eqn '2 ^ 3 ^ 4' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, pow(2, pow(3, 4)) test.done() 'test basic ^2 and ^3 operators': (test) -> test.expect 2 eqn = str2eqn '2 ^2 ^3' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, pow(2 * 2, 3) test.done() 'test basic factorial operator': (test) -> test.expect 2 eqn = str2eqn '4 ! - 1 ! - 0 !' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (4 * 3 * 2 - 1 - 1) test.done() 'test basic post increment and decrement operators': (test) -> test.expect 2 eqn = str2eqn '1 ++ * 0 --' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (2 * -1) test.done() 'test basic pre increment and decrement operators': (test) -> test.expect 2 eqn = str2eqn '++ 1 * -- 0' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (2 * -1) test.done() 'test basic square root function': (test) -> test.expect 4 eqn = str2eqn 'sqrt ( 2 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (sqrt 2) eqn = str2eqn 'sqrt ( ( 1 + 2 ) * 3 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (sqrt ((1 + 2) * 3)) test.done() 'test basic integer square root function': (test) -> test.expect 4 eqn = str2eqn 'isqrt ( 2 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (floor sqrt 2) eqn = str2eqn 'isqrt ( ( 1 + 2 ) * 3 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, (floor sqrt ((1 + 2) * 3)) test.done() 'test basic floor function': (test) -> test.expect 4 eqn = str2eqn 'floor ( 2 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, floor 2 eqn = str2eqn 'floor ( 1.5 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, floor 1.5 test.done() 'test basic ceiling function': (test) -> test.expect 4 eqn = str2eqn 'ceil ( 2 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, ceil 2 eqn = str2eqn 'ceil ( 1.5 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, ceil 1.5 test.done() 'test basic min function': (test) -> test.expect 4 eqn = str2eqn 'min ( 1 , 2 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, min(1, 2) eqn = str2eqn 'min ( 2 , 1 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, min(2, 1) test.done() 'test basic max function': (test) -> test.expect 4 eqn = str2eqn 'max ( 1 , 2 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, max(1, 2) eqn = str2eqn 'max ( 2 , 1 )' evaluate eqn, (e, r) -> test.ifError e evalcheck test, eqn, r, max(2, 1) test.done()