OpenEuphoria

1. Why does my Exercism task fail?

• Posted by axtens_bruce Feb 13, 2023
• 481 views

Code

public function square(integer n 
    if n < 1 or n > 64 then 
        return "square must be between 1 and 64" 
    end if 
    return power(2, (n-1)) 
end function 
 
public function total() 
    atom sum = 0 
    for i = 1 to 64 do 
        sum += square(i) 
    end for 
    return sum 
end function 

Tests

include std/unittest.e  
 
include grains.ex  
 
test_equal("grains on square 1",square(1),1) 
test_equal("grains on square 2",square(2),2) 
test_equal("grains on square 3",square(3),4) 
test_equal("grains on square 4",square(4),8) 
test_equal("grains on square 16",square(16),32768) 
test_equal("grains on square 32",square(32),2147483648) 
test_equal("grains on square 64",square(64),9223372036854775808) 
test_equal("square 0 raises an exception",square(0),"square must be between 1 and 64") 
test_equal("negative square raises an exception",square(-1),"square must be between 1 and 64") 
test_equal("square greater than 64 raises an exception",square(65),"square must be between 1 and 64") 
test_equal("returns the total number of grains on the board", total(), 18446744073709551615) 
 
test_report()  

Run, failing on test test_equal("grains on square 64",square(64),9223372036854775808)

>eutest 
 
interpreting t_grains.e: 
  failed: grains on square 64, expected: 9.22337203685478e+018 but got: -9.22337203685478e+018 
  11 tests run, 10 passed, 1 failed, 91% success 
FAILURE: t_grains.e program died with status 1 
 
Test results summary: 
    FAIL: t_grains.e 
Files (run: 1) (failed: 1) (0% success) 

3. Re: Why does my Exercism task fail?

• Posted by axtens_bruce Feb 13, 2023
• 408 views

>eui -v 
Euphoria Interpreter v4.1.0 development 
   64-bit Windows, Using System Memory 
   Revision Date: 2015-02-02 14:18:53, Id: 6300:57179171dbed 

Reversing it makes no difference though.

test_equal("grains on square 64",square(64),9.223372037e+18) 
test_equal("grains on square 64",9.223372037e+18,square(64)) 

interpreting t_grains.e: 
  failed: grains on square 64, expected: 9.22337203685478e+018 but got: 9.223372037e+018 
  failed: grains on square 64, expected: 9.223372037e+018 but got: 9.22337203685478e+018 

test_equal("grains on square 64",square(64),9.22337203685478e+018) 
test_equal("grains on square 64",9.22337203685478e+018,square(64)) 

interpreting t_grains.e: 
  failed: grains on square 64, expected: 9.22337203685478e+018 but got: 9.22337203685478e+018 
  failed: grains on square 64, expected: 9.22337203685478e+018 but got: 9.22337203685478e+018 

-Bruce