46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import {
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run,
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// Distribution,
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squiggleExpression,
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errorValueToString,
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// errorValue,
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// result,
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} from "../../src/js/index";
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export function testRun(x: string): squiggleExpression {
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let squiggleResult = run(x, { sampleCount: 1000, xyPointLength: 100 });
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// return squiggleResult.value
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if (squiggleResult.tag === "Ok") {
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return squiggleResult.value;
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} else {
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throw new Error(
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`Expected squiggle expression to evaluate but got error: ${errorValueToString(
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squiggleResult.value
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)}`
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);
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}
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}
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export function failDefault() {
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expect("be reached").toBe("codepath should never");
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}
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/**
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* This appears also in `TestHelpers.res`. According to https://www.math.net/percent-error, it computes
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* absolute error when numerical stability concerns make me not want to compute relative error.
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* */
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export function expectErrorToBeBounded(
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received: number,
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expected: number,
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epsilon: number,
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digits: number
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) {
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let distance = Math.abs(received - expected);
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let expectedAbs = Math.abs(expected);
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let normalizingDenom = Math.max(expectedAbs, 1);
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let error = distance / normalizingDenom;
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expect(Math.round(10 ** digits * error) / 10 ** digits).toBeLessThanOrEqual(
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epsilon
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);
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}
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