/* Unit Test: Error Handling and Edge Cases */
/* Tests: Error detection and handling */

/* Test valid operations first to ensure basic functionality */
valid_test : 5 + 3;
..assert valid_test = 8;

/* Test division by zero handling */
/* This should be handled gracefully */
safe_div : x y -> when y is
    0 then "division by zero"
    _ then x / y;

div_result1 : safe_div 10 2;
div_result2 : safe_div 10 0;

..assert div_result1 = 5;
..assert div_result2 = "division by zero";

/* Test edge cases with proper handling */
edge_case1 : when 0 is
    0 then "zero"
    _ then "other";

edge_case2 : when "" is
    "" then "empty string"
    _  then "other";

edge_case3 : when false is
    false then "false"
    _     then "other";

..assert edge_case1 = "zero";
..assert edge_case2 = "empty string";
..assert edge_case3 = "false";

/* Test complex error scenarios */
complex_error_handling : input -> when input is
    input < 0 then "negative"
    input = 0 then "zero"
    input > 100 then "too large"
    _ then "valid";

complex_result1 : complex_error_handling (-5);
complex_result2 : complex_error_handling 0;
complex_result3 : complex_error_handling 150;
complex_result4 : complex_error_handling 50;

..assert complex_result1 = "negative";
..assert complex_result2 = "zero";
..assert complex_result3 = "too large";
..assert complex_result4 = "valid";

/* Test safe arithmetic operations */
safe_add : x y -> when y is
    0 then x
    _ then x + y;

safe_result1 : safe_add 5 3;
safe_result2 : safe_add 5 0;

..assert safe_result1 = 8;
..assert safe_result2 = 5;

..out "Error handling test completed successfully";