48 lines
2.1 KiB
JavaScript
48 lines
2.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.StreamArbitrary = void 0;
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const Arbitrary_1 = require("../../check/arbitrary/definition/Arbitrary");
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const Value_1 = require("../../check/arbitrary/definition/Value");
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const symbols_1 = require("../../check/symbols");
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const Stream_1 = require("../../stream/Stream");
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const globals_1 = require("../../utils/globals");
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const stringify_1 = require("../../utils/stringify");
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const safeObjectDefineProperties = Object.defineProperties;
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function prettyPrint(seenValuesStrings) {
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return `Stream(${(0, globals_1.safeJoin)(seenValuesStrings, ',')}…)`;
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}
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class StreamArbitrary extends Arbitrary_1.Arbitrary {
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constructor(arb) {
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super();
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this.arb = arb;
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}
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generate(mrng, biasFactor) {
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const appliedBiasFactor = biasFactor !== undefined && mrng.nextInt(1, biasFactor) === 1 ? biasFactor : undefined;
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const enrichedProducer = () => {
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const seenValues = [];
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const g = function* (arb, clonedMrng) {
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while (true) {
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const value = arb.generate(clonedMrng, appliedBiasFactor).value;
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(0, globals_1.safePush)(seenValues, value);
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yield value;
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}
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};
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const s = new Stream_1.Stream(g(this.arb, mrng.clone()));
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return safeObjectDefineProperties(s, {
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toString: { value: () => prettyPrint(seenValues.map(stringify_1.stringify)) },
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[stringify_1.toStringMethod]: { value: () => prettyPrint(seenValues.map(stringify_1.stringify)) },
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[stringify_1.asyncToStringMethod]: { value: async () => prettyPrint(await Promise.all(seenValues.map(stringify_1.asyncStringify))) },
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[symbols_1.cloneMethod]: { value: enrichedProducer, enumerable: true },
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});
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};
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return new Value_1.Value(enrichedProducer(), undefined);
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}
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canShrinkWithoutContext(value) {
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return false;
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}
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shrink(_value, _context) {
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return Stream_1.Stream.nil();
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}
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}
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exports.StreamArbitrary = StreamArbitrary;
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