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qunit_test_legs.html
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<!DOCTYPE html>
<meta charset="utf-8">
<title>Test Suite</title>
<!-- Using local copies of QUnit: -->
<link rel="stylesheet" href="../../qunit-2.19.4/qunit-2.19.4.css">
<!-- <link rel="stylesheet" href="https://code.jquery.com/qunit/qunit-2.19.4.css"> -->
<body>
<div id="qunit"></div>
<div id="qunit-fixture"></div>
<!-- Using local copies of QUnit: -->
<!-- <script src="https://code.jquery.com/qunit/qunit-2.19.4.js"></script> -->
<script src="../../qunit-2.19.4/qunit-2.19.4.js"></script>
<script src="../../qunit-assert-close-git/qunit-assert-close/qunit-assert-close.js"></script>
<script src="debug.js"></script>
<script src="BCLegs.js"></script>
<script src="BCEndRings.js"></script>
<script src="BirdcageBuilder.js"></script>
<!-- see https://www.smashingmagazine.com/2012/06/introduction-to-javascript-unit-testing/ -->
<script>
QUnit.module('Birdcage Legs', function() {
// TODO - double check all NaN results are correct; try to make some better/more meaningful tests
// TODO - use Number.NEGATIVE_INFINITY and Inifinity to check those cases properly
// TODO - replace all deepEqual NaN checks with assert.true( isNaN(...))
QUnit.test('Rectangular Self Inductance', function(assert) {
var bb = new BirdcageBuilder(16, 128e6, 10, 12);
// TODO - change to new BCLegs subclass if only testing legs (search/replace all if possible)
assert.equal(bb.n_legs, 16);
// TODO equal vs. deepEqual; also == vs ===?
assert.deepEqual(bb.legs.calc_leg_self_inductance_rect(0, 1), NaN);
assert.equal( bb.legs.calc_leg_self_inductance_rect(1, 2), 1);
});
QUnit.test('Leg & Shield Positions', function(assert) {
var n = 16;
var rc = 10;
var rs = 12;
var bb = new BirdcageBuilder(n, 128e6, rc, rs);
var k;
for (k = 0; k < n; k++) {
assert.equal(Math.sqrt(Math.pow(bb.legs.leg_x[k], 2) + Math.pow(bb.legs.leg_y[k], 2)), rc, 'Leg Radius i=' + k);
}
// TODO - using method of images; shield "legs" do not fall on shield radius
// TODO - instead, need to test if the E-field is 0 at the shield radius... how?
//for (k = 0; k < n; k++) {
// assert.equal(Math.sqrt(Math.pow(bb.legs.shield_x[k], 2) + Math.pow(bb.legs.shield_y[k], 2)), rs, 'Shield Radius i=' + k);
//}
});
QUnit.test('Tubular Self Inductance (R_inner = 0)', function(assert) {
var bb = new BirdcageBuilder(16, 128e6, 10, 12);
assert.equal( bb.legs.calc_leg_self_inductance_tube(1, 0, 4), -1.5);
assert.deepEqual(bb.legs.calc_leg_self_inductance_tube(0, 0, 4), NaN);
});
QUnit.test('Tubular Self Inductance (R_inner > 0)', function(assert) {
var bb = new BirdcageBuilder(16, 128e6, 10, 12);
// TODO need better tests with the k/ratio factor
// TODO can't easily force k to a nice number...
//assert.equal(bb.calc_leg_self_inductance_tube(1 0, 4), -1.5);
assert.deepEqual(bb.legs.calc_leg_self_inductance_tube(1, 2, 0), NaN);
assert.deepEqual(bb.legs.calc_leg_self_inductance_tube(0, 2, 0), NaN);
var c = 2*(0.1493 - 0.3606 - 0.0405 + 0.2526 - 1); // hack
assert.equal(bb.legs.calc_leg_self_inductance_tube(1, 4, 4), c);
});
QUnit.test('Leg Mutual Inductance (Math Test Only)', function(assert) {
var bb = new BirdcageBuilder(1, 128e6, 1, 2);
bb.legs.set_legs_rect(1, 1); // TODO
// TODO is this really a bug, or is a loose tolerance assertion ok for this?
// why isn't it exact?
//assert.close(bb.legs.helper_Lmn(1., 1.), 2*Math.log(2), 1e-15);
assert.close(bb.legs.helper_Lmn(1., 1.), 2*Math.log(1+Math.sqrt(2))-2*Math.sqrt(2) + 2, 1e-15);
assert.close(bb.legs.helper_Lmn(1., 1.), 2*(Math.log(1+Math.sqrt(2)) - Math.sqrt(2)+ 1), 1e-15);
//assert.equal(bb.helper_Lmn(1., 1.), 2*Math.log(2)); // TODO - why isn't this exact? just flotaing point error???
// Test my Lmn vs. original
var l, d;
l = 1.0;
d = 1.0;
assert.equal(bb.legs.helper_Lmn(l, d), bb.legs.helper_Lmn_orig(l, d), 'Lmn(1,1) == Original');
// Output from Java:
//Lmn(1, 1): 0.9343201
//Lmn(1, 2): 0.49028754
//Lmn(2, 1): 3.3024058
assert.close(bb.legs.helper_Lmn(1, 1), 0.9343201, 1e-7, 'Lmn(1,1) close to Java output');
assert.close(bb.legs.helper_Lmn(1, 2), 0.49028754, 1e-6, 'Lmn(1,1) close to Java output'); // adjusted tolerance to 10^-6
assert.close(bb.legs.helper_Lmn(2, 1), 3.3024058, 1e-6, 'Lmn(1,1) close to Java output'); // adjusted tolerance to 10^-6
// TODO continue tests
// TODO test final mutual inductance result
});
QUnit.test('Shield Mutual Inductance', function(assert) {
var bb = new BirdcageBuilder(1, 128e6, 1, 2);
// TODO is this really a bug, or is a loose tolerance assertion ok for this?
// why isn't it exact?
//assert.close(bb.legs.helper_Lmn(1., 1.), 2*Math.log(2), 1e-15); // from old (wrong) Lmn calculation
assert.close(bb.legs.helper_Lmn(1., 1.), 2*(Math.log(1 +Math.sqrt(2)) - Math.sqrt(2) + 1), 1e-15); // from old (wrong) Lmn calculation
// TODO continue tests
// TODO test final mutual inductance result
});
}); // end Birdcage Legs tests
</script>
</body>