// Test error handling patterns from the documentation

io.out "=== Testing Error Handling Patterns ===";

// Basic Result usage
divide : x y ->
  when y is
    0 then Err "Division by zero"
    _ then Ok (x / y);

handleDivision : x y ->
  when (divide x y) is
    Ok result then result
    Err message then 0;

io.out "Division results:";
io.out (handleDivision 10 2);    // Should be 5
io.out (handleDivision 10 0);    // Should print error and return 0

// Validation patterns
validateAge : age ->
  when (validate.type "Int" age) is
    false then Err "Age must be an integer"
    true then
      when (validate.range 0 150 age) is
        false then Err "Age must be between 0 and 150"
        true then Ok age;

io.out "";
io.out "Validation results:";
io.out (validateAge 25);         // Should be Ok 25
io.out (validateAge 200);        // Should be Err message
io.out (validateAge "not a number"); // Should be Err message

// Simple assertion example
io.out "";
io.out "Assertion example:";
assert (2 + 2 = 4) "Math works";
io.out "Assertion passed!";

// Debug example
io.out "";
io.out "Debug example:";
debug.print "Testing debug output" 42;

io.out "";
io.out "Error handling tests completed!";