<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#comp-func">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#integers">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#calc-range">
<link rel="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../support/computed-testcommon.js"></script>
<div id="target"></div>
<div id="reference"></div>
<script>
const property = 'z-index';

function test_integer_equals(value, expected) {
  const reference = document.getElementById('reference');
  reference.style[property] = '';
  reference.style[property] = expected;
  const computed = getComputedStyle(reference)[property];
  test_computed_value(property, value, computed);
}

// Identity tests
test_integer_equals('min(1)', '1');
test_integer_equals('max(1)', '1');

// Rounding
test_integer_equals('min(0.4)', '0');
test_integer_equals('min(0.6)', '1');
test_integer_equals('max(0.4)', '0');
test_integer_equals('max(0.6)', '1');

// Rounding and nesting
test_integer_equals('min(1.1, max(0.4, 0.6))', '1');
test_integer_equals('max(0.3, min(1.1, 0.4))', '0');

// No rounding at intermediate steps
test_integer_equals('calc(min(0.3, 0.6) * 2)', '1');
test_integer_equals('calc(max(0.3, 0.6) / 2)', '0');
</script>