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const tape = require('tape'),
flickeringMitigation = require('../build/flickering-mitigation');
tape('flickeringMitigation(...) should set the expected defaults', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
test.equal(fm.length(), 10);
test.ok(isNaN(fm.totalArea()));
test.ok(isNaN(fm.lastAreaError));
test.ok(isNaN(fm.lastGrowth));
test.equal(fm.growthChanges.length, 0);
test.deepEqual(fm.growthChangeWeights, [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]);
test.equal(fm.growthChangeWeightsSum, 13);
test.end();
});
tape('flickeringMitigation.reset(...) should reset to expected defaults', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
fm.length(4)
.totalArea(1000)
.add(1)
.add(2)
.add(3)
.add(4);
test.equal(fm.reset(), fm);
test.equal(fm.length(), 10);
test.ok(isNaN(fm.totalArea()));
test.ok(isNaN(fm.lastAreaError));
test.ok(isNaN(fm.lastGrowth));
test.equal(fm.growthChanges.length, 0);
test.deepEqual(fm.growthChangeWeights, [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]);
test.equal(fm.growthChangeWeightsSum, 13);
test.end();
});
tape('flickeringMitigation.clear(...) should empty memorizations', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
fm.length(2)
.totalArea(1000)
.add(1)
.add(2)
.add(3)
.add(4);
test.equal(fm.clear(), fm);
test.equal(fm.length(), 2);
test.ok(fm.totalArea(), 1000);
test.ok(isNaN(fm.lastAreaError));
test.ok(isNaN(fm.lastGrowth));
test.equal(fm.growthChanges.length, 0);
test.end();
});
tape('flickeringMitigation.length(...)', function(test) {
test.test("flickeringMitigation.length(...) should set the specified memorizations' length", function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
test.equal(fm.length(20), fm);
test.equal(fm.length(), 20);
test.deepEqual(fm.growthChangeWeights, [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]);
test.equal(fm.growthChangeWeightsSum, 23);
test.end();
});
test.test('flickeringMitigation.length(...) should only allow positive integers', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
test.equal(fm.length(NaN), fm);
test.equal(fm.length(), 10);
test.equal(fm.length(''), fm);
test.equal(fm.length(), 10);
test.equal(fm.length(0), fm);
test.equal(fm.length(), 10);
test.equal(fm.length(-1), fm);
test.equal(fm.length(), 10);
test.end();
});
});
tape('flickeringMitigation.totalArea(...)', function(test) {
test.test('flickeringMitigation.totalArea(...) should set the specified total available area', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
test.equal(fm.totalArea(10), fm);
test.equal(fm.totalArea(), 10);
test.end();
});
test.test('flickeringMitigation.totalArea(...) should only accpet positve numbers', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
test.equal(fm.totalArea(-10), fm);
test.ok(isNaN(fm.totalArea()));
test.end();
});
});
tape('flickeringMitigation.add(...)', function(test) {
test.test('flickeringMitigation.add(...) should handle a queue', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
test.equal(fm.add(1), fm);
test.equal(fm.lastAreaError, 1);
test.ok(isNaN(fm.lastGrowth));
test.equal(fm.growthChanges.length, 0);
fm.add(2);
test.equal(fm.lastAreaError, 2);
test.equal(fm.lastGrowth, 1);
test.equal(fm.growthChanges.length, 0);
fm.add(1);
test.equal(fm.lastAreaError, 1);
test.equal(fm.lastGrowth, -1);
test.equal(fm.growthChanges.length, 1);
test.equal(fm.growthChanges[0], true);
fm.add(0);
test.equal(fm.lastAreaError, 0);
test.equal(fm.lastGrowth, -1);
test.equal(fm.growthChanges.length, 2);
test.equal(fm.growthChanges[0], false);
test.equal(fm.growthChanges[1], true);
test.end();
});
test.test("flickeringMitigation.add(...) should maintain queue's length", function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
fm.length(2)
.add(1)
.add(2)
.add(3)
.add(4);
test.equal(fm.growthChanges.length, 2);
fm.add(5);
test.equal(fm.growthChanges.length, 2);
test.end();
});
});
tape('flickeringMitigation.ratio(...)', function(test) {
test.test('flickeringMitigation.ratio(...) should return 0 if not enought memorizations', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
fm.add(1)
.add(2)
.add(1);
test.equal(fm.ratio(), 0);
test.end();
});
test.test('flickeringMitigation.ratio(...) should return 0 if current area arror is large enought', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation();
fm.length(2)
.totalArea(5)
.add(1)
.add(2)
.add(1)
.add(2)
.add(1);
test.equal(fm.ratio(), 0);
test.end();
});
test.test('flickeringMitigation.ratio(...) should compute adequate ratio', function(test) {
const fm = new flickeringMitigation.FlickeringMitigation(),
wtc = 3 + 2; // growthChangeWeights = [3,2]
fm.length(2).totalArea(1000);
test.equal(
fm
.clear()
.add(1)
.add(2)
.add(3)
.add(4)
.ratio(),
0 / wtc
); // no change
test.equal(
fm
.clear()
.add(4)
.add(3)
.add(2)
.add(1)
.ratio(),
0 / wtc
); // no change
test.equal(
fm
.clear()
.add(1)
.add(2)
.add(3)
.add(2)
.ratio(),
3 / wtc
); // 1 (down) change at first pos
test.equal(
fm
.clear()
.add(4)
.add(3)
.add(2)
.add(3)
.ratio(),
3 / wtc
); // 1 (up) change at first pos
test.equal(
fm
.clear()
.add(2)
.add(3)
.add(2)
.add(1)
.ratio(),
2 / wtc
); // 1 (down) change at second pos
test.equal(
fm
.clear()
.add(3)
.add(2)
.add(3)
.add(4)
.ratio(),
2 / wtc
); // 1 (up) change at second pos
test.equal(
fm
.clear()
.add(4)
.add(3)
.add(4)
.add(3)
.ratio(),
(3 + 2) / wtc
); // 2 changes (up, down)
test.equal(
fm
.clear()
.add(1)
.add(2)
.add(1)
.add(2)
.ratio(),
(3 + 2) / wtc
); // 2 changes (down, up)
test.end();
});
});