wgc/dist/test/router/compose.test.js

The official CLI tool to manage the GraphQL Federation Platform Cosmo

import { readFile } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import { existsSync } from 'node:fs';
import { randomUUID } from 'node:crypto';
import { Command } from 'commander';
import { describe, expect, test } from 'vitest';
import { createClient, createRouterTransport } from '@connectrpc/connect';
import { PlatformService } from '@wundergraph/cosmo-connect/dist/platform/v1/platform_pb';
import { resolve } from 'pathe';
import ComposeCommand from '../../src/commands/router/commands/compose.js';
import { FIXTURES_DIR_PATH } from './utils.js';
export const mockPlatformTransport = () => createRouterTransport(({ service }) => {
    service(PlatformService, {});
});
describe('router compose command tests', () => {
    test('that generated router config matches expected snapshot when config splitting is disabled', async () => {
        const client = {
            platform: createClient(PlatformService, mockPlatformTransport()),
        };
        const outputDir = join(tmpdir(), 'router-compose', randomUUID());
        const outputFile = join(outputDir, 'router-config.json');
        const program = new Command();
        program.addCommand(ComposeCommand({ client }));
        await program.parseAsync(['compose', '-i', resolve('./test/testdata/compose.yaml'), '-o', outputFile], {
            from: 'user',
        });
        expect(existsSync(outputFile)).toBe(true);
        // The output file must match the expected snapshot
        const content = await readFile(outputFile, 'utf8');
        await expect(content).toMatchFileSnapshot(join(FIXTURES_DIR_PATH, 'router-compose', `router-config.json.snap`));
    });
    test('that generated router config matches expected snapshot when config splitting is enabled ', async () => {
        const client = {
            platform: createClient(PlatformService, mockPlatformTransport()),
        };
        const outputDir = join(tmpdir(), 'router-compose-split', randomUUID());
        const program = new Command();
        program.addCommand(ComposeCommand({ client }));
        await program.parseAsync(['compose', '-i', resolve('./test/testdata/compose.yaml'), '-o', outputDir, '--split-configs-enabled'], {
            from: 'user',
        });
        expect(existsSync(outputDir)).toBe(true);
        expect(existsSync(join(outputDir, 'router-config.json'))).toBe(true);
        expect(existsSync(join(outputDir, 'mapper.json'))).toBe(true);
        expect(existsSync(join(outputDir, 'feature-flags'))).toBe(true);
        expect(existsSync(join(outputDir, 'feature-flags', 'my-feature-flag.json'))).toBe(true);
        // All output files should match the snapshots
        await expectSplitOutputMatchSnapshot(outputDir, 'router-config.json');
        await expectSplitOutputMatchSnapshot(outputDir, 'mapper.json');
        await expectSplitOutputMatchSnapshot(outputDir, join('feature-flags', 'my-feature-flag.json'));
    });
});
async function expectSplitOutputMatchSnapshot(outputDir, name) {
    const content = await readFile(join(outputDir, name), 'utf8');
    await expect(content).toMatchFileSnapshot(join(FIXTURES_DIR_PATH, 'router-compose', 'split-config', `${name}.snap`));
}
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