41a557f2c9
The vi.mock('chart.js', ...) MockChart class was copy-pasted verbatim
between chart-canvas.spec.ts and overview.spec.ts. Extract it to
shared/chart-canvas/testing/mock-chart.ts and import it via
vi.hoisted(async () => import(...)) in each spec, since vi.mock's
factory is hoisted above regular imports and can't reference a
plain top-level import.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
33 lines
1.1 KiB
TypeScript
33 lines
1.1 KiB
TypeScript
import { vi } from 'vitest';
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/**
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* Test double for Chart.js's `Chart` class, shared by `chart-canvas.spec.ts` and
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* `overview.spec.ts`. jsdom has no canvas 2D context, so real Chart.js cannot render
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* in this project's test environment — specs mock the whole `chart.js` module via
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* `vi.mock('chart.js', () => ({ Chart: MockChart, registerables: [] }))` and assert
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* on the Chart.js lifecycle contract (constructor args, update(), destroy()) instead.
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*
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* Not a `*.spec.ts` file on purpose: it exports a class rather than defining tests,
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* so it must not be picked up by the test runner's `**\/*.spec.ts` include glob.
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*/
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export class MockChart {
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static register = vi.fn();
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static instances: MockChart[] = [];
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data: unknown;
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options: unknown;
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config: { type: unknown; data: unknown; options: unknown };
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destroy = vi.fn();
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update = vi.fn();
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constructor(
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public ctx: unknown,
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config: { type: unknown; data: unknown; options: unknown },
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) {
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this.config = config;
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this.data = config.data;
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this.options = config.options;
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MockChart.instances.push(this);
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}
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}
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