Mechanical rename produced by scripts/msd-rename.cjs: gsd/Gsd/GSD -> msd/Msd/MSD across contents and paths, upstream package/repo coordinates -> @golem15/msd-core and golem15com/msd-core. Deep links into upstream history, sibling upstream packages, the GSD-2 import feature, CHANGELOG.md and .changeset/ are kept as-is. Hand edits on top: MSD block-letter banner and logos, LICENSE copyright line, package/plugin identity, regenerated lockfile, install-tree fixtures, derived registries and benchmark baseline; migration checksum baseline re-locked (MSD keeps its own install state, so no install had applied the old sums); sort-order and regex-escaped expectations in tests adjusted.
99 lines
4.5 KiB
JavaScript
99 lines
4.5 KiB
JavaScript
'use strict';
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/**
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* Property-based tests for the #4213 progress-surface helpers
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*
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* Module: msd-core/bin/lib/state-transition.cjs
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* Exported: formatProgressMachineSegment(percent),
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* stateReplaceProgressPercent(content, percent)
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*
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* Properties tested:
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* (a) formatProgressMachineSegment: never throws on any finite input
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* (the review's RangeError case — persisted frontmatter values are
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* hand-editable and only finiteness-checked upstream)
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* (b) formatProgressMachineSegment: always returns a well-formed
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* `[bar] NN%` segment with an exactly-10-glyph bar, 0-100 percent
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* (c) stateReplaceProgressPercent: idempotent — a second application with
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* the same percent is a no-op
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* (d) stateReplaceProgressPercent: round-trip — the written bar re-parses
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* to the same (clamped) percent for any 0-100 input
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*/
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const { describe, test } = require('node:test');
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const assert = require('node:assert/strict');
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const fc = require('./helpers/fast-check-setup.cjs');
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const {
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formatProgressMachineSegment,
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stateReplaceProgressPercent,
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} = require('../msd-core/bin/lib/state-transition.cjs');
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const SEGMENT_RE = /^\[(█{0,10}░{0,10})\] (\d{1,3})%$/;
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function clampToPercentRange(n) {
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return Math.max(0, Math.min(100, Math.round(n)));
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}
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describe('formatProgressMachineSegment properties (#4213 review finding)', () => {
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// (a) + (b) never throws, always well-formed, for ANY finite number.
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test('property: never throws and always yields a well-formed segment for any finite percent', () => {
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fc.assert(
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fc.property(fc.double({ noDefaultInfinity: true, noNaN: true }), (percent) => {
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const segment = formatProgressMachineSegment(percent);
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const match = SEGMENT_RE.exec(segment);
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assert.ok(match, `segment must match [bar] NN%, got ${segment}`);
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assert.equal(match[1].length, 10, 'bar must be exactly 10 glyphs');
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const printed = Number(match[2]);
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assert.ok(printed >= 0 && printed <= 100, `printed percent must be clamped, got ${printed}`);
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}),
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);
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});
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// Bar fill agrees with the printed percent at the 0-100 boundaries reviewers read.
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test('boundary literals: 0, 100, 105, -30', () => {
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assert.equal(formatProgressMachineSegment(0), '[░░░░░░░░░░] 0%');
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assert.equal(formatProgressMachineSegment(100), '[██████████] 100%');
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assert.equal(formatProgressMachineSegment(105), '[██████████] 100%');
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assert.equal(formatProgressMachineSegment(-30), '[░░░░░░░░░░] 0%');
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});
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// #4294: the bar is drawn by the render kernel, so a sub-100 percent can no
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// longer round up to a full bar beside a number that says otherwise.
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test('#4294 boundary literals: 95 and 99 hold one cell short of full; 94 is unchanged', () => {
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assert.equal(formatProgressMachineSegment(94), '[█████████░] 94%');
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assert.equal(formatProgressMachineSegment(95), '[█████████░] 95%');
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assert.equal(formatProgressMachineSegment(99), '[█████████░] 99%');
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});
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});
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describe('stateReplaceProgressPercent properties (#4213 review finding)', () => {
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// Any percent the writer can be handed, applied to a representative body.
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const anyPercent = fc.integer({ min: -1000, max: 1000 });
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// (c) idempotency: applying twice with the same percent changes nothing more.
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test('property: idempotent on a second application with the same percent', () => {
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fc.assert(
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fc.property(anyPercent, (percent) => {
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const content = '# Project State\n\n**Progress:** [█████░░░░░] 50% (2/4 plans done)\n';
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const once = stateReplaceProgressPercent(content, percent);
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const twice = stateReplaceProgressPercent(once, percent);
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assert.equal(twice, once);
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}),
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);
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});
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// (d) round-trip: the segment the helper writes re-parses to the same
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// clamped percent it printed for any in-range input.
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test('property: written segment re-parses to the clamped percent (0-100)', () => {
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fc.assert(
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fc.property(fc.integer({ min: 0, max: 100 }), (percent) => {
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const content = 'Progress: [██░░░░░░░░] 20%\n';
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const updated = stateReplaceProgressPercent(content, percent);
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const match = /\[(█{0,10}░{0,10})\] (\d{1,3})%/.exec(updated);
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assert.ok(match, `rewritten body must carry a machine segment, got ${updated}`);
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assert.equal(Number(match[2]), clampToPercentRange(percent));
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}),
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);
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});
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});
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