57 lines
2.2 KiB
JavaScript
57 lines
2.2 KiB
JavaScript
const test = require('node:test');
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const assert = require('node:assert/strict');
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const ErrorMetrics = require('../src/nrmse/errorMetrics.js');
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const { makeLogger } = require('./helpers.js');
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test('MSE and RMSE calculations are correct', () => {
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const m = new ErrorMetrics({}, makeLogger());
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const predicted = [1, 2, 3];
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const measured = [1, 3, 5];
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assert.ok(Math.abs(m.meanSquaredError(predicted, measured) - 5 / 3) < 1e-9);
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assert.ok(Math.abs(m.rootMeanSquaredError(predicted, measured) - Math.sqrt(5 / 3)) < 1e-9);
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});
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test('MSE throws for mismatched series lengths in strict mode', () => {
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const m = new ErrorMetrics({}, makeLogger());
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assert.throws(() => m.meanSquaredError([1, 2], [1]), /same length/);
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});
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test('normalizeUsingRealtime throws when range is zero', () => {
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const m = new ErrorMetrics({}, makeLogger());
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assert.throws(() => m.normalizeUsingRealtime([1, 1, 1], [1, 1, 1]), /Invalid process range/);
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});
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test('longTermNRMSD returns 0 before 100 samples and value after', () => {
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const m = new ErrorMetrics({}, makeLogger());
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for (let i = 0; i < 99; i++) {
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assert.equal(m.longTermNRMSD(0.1), 0);
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}
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assert.notEqual(m.longTermNRMSD(0.2), 0);
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});
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test('assessDrift returns expected result envelope', () => {
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const m = new ErrorMetrics({}, makeLogger());
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const out = m.assessDrift([100, 101, 102], [99, 100, 103], 90, 110);
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assert.equal(typeof out.nrmse, 'number');
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assert.equal(typeof out.longTermNRMSD, 'number');
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assert.ok('immediateLevel' in out);
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assert.ok('longTermLevel' in out);
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});
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test('assessPoint keeps per-metric state and returns metric id', () => {
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const m = new ErrorMetrics({}, makeLogger());
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m.registerMetric('flow', { windowSize: 5, minSamplesForLongTerm: 3, strictValidation: true });
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m.assessPoint('flow', 100, 99, { processMin: 0, processMax: 200, timestamp: Date.now() - 2000 });
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m.assessPoint('flow', 101, 100, { processMin: 0, processMax: 200, timestamp: Date.now() - 1000 });
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const out = m.assessPoint('flow', 102, 101, { processMin: 0, processMax: 200, timestamp: Date.now() });
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assert.equal(out.metricId, 'flow');
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assert.equal(out.valid, true);
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assert.equal(typeof out.nrmse, 'number');
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assert.equal(typeof out.sampleCount, 'number');
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});
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