<!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/#angles">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#calc-type-checking">
<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/numeric-testcommon.js"></script>
<div id="target"></div>
<div id="reference"></div>
<script>
function test_angle_equals(value, expected) {
  test_math_used(`rotate(${value})`, `rotate(${expected})`,
	{prop:'transform', base:'none',
     msg: `${value} should be used-value-equivalent to ${expected}`});
}

// Identity tests
test_angle_equals('min(1deg)', '1deg');
test_angle_equals('min(1grad)', '1grad');
test_angle_equals('min(1rad)', '1rad');
test_angle_equals('min(1turn)', '1turn');
test_angle_equals('max(1deg)', '1deg');
test_angle_equals('max(1grad)', '1grad');
test_angle_equals('max(1rad)', '1rad');
test_angle_equals('max(1turn)', '1turn');

// Comparisons between same units
test_angle_equals('min(1deg, 2deg)', '1deg');
test_angle_equals('min(1grad, 2grad)', '1grad');
test_angle_equals('min(1rad, 2rad)', '1rad');
test_angle_equals('min(1turn, 2turn)', '1turn');
test_angle_equals('max(1deg, 2deg)', '2deg');
test_angle_equals('max(1grad, 2grad)', '2grad');
test_angle_equals('max(1rad, 2rad)', '2rad');
test_angle_equals('max(1turn, 2turn)', '2turn');

// Comparisons between different units
test_angle_equals('min(90deg, 0.26turn)', '90deg');
test_angle_equals('min(1.57rad, 95deg)', '1.57rad');
test_angle_equals('max(91deg, 0.25turn)', '91deg');
test_angle_equals('max(1.58rad, 90deg)', '1.58rad');

// Nestings
test_angle_equals('min(270deg, max(0.25turn, 3.14rad))', '3.14rad');
test_angle_equals('max(0.25turn, min(270deg, 3.14rad))', '3.14rad');

// General calculations
test_angle_equals('calc(min(90deg, 1.58rad) + 0.25turn)', '180deg');
test_angle_equals('calc(min(90deg, 1.58rad) - 0.125turn)', '45deg');
test_angle_equals('calc(min(90deg, 1.58rad) * 2', '180deg');
test_angle_equals('calc(min(90deg, 1.58rad) / 2', '45deg');
test_angle_equals('calc(max(90deg, 1.56rad) + 0.25turn)', '180deg');
test_angle_equals('calc(max(90deg, 1.56rad) - 0.125turn)', '45deg');
test_angle_equals('calc(max(90deg, 1.56rad) * 2', '180deg');
test_angle_equals('calc(max(90deg, 1.56rad) / 2', '45deg');
test_angle_equals('calc(min(90deg, 1.58rad) + max(0.25turn, 99grad))', '180deg');
test_angle_equals('calc(min(90deg, 1.58rad) - max(0.25turn, 99grad))', '0deg');
</script>