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import { rmSync, mkdirSync, existsSync, writeFileSync, rmdirSync } from 'node:fs';
import { join, resolve } from 'node:path';
import { tmpdir } from 'node:os';
import { fileURLToPath } from 'node:url';
import { Command } from 'commander';
import { describe, test, expect } from 'vitest';
import { createPromiseClient, createRouterTransport } from '@connectrpc/connect';
import { PlatformService } from '@wundergraph/cosmo-connect/dist/platform/v1/platform_connect';
import { dirname } from 'pathe';
import GenerateCommand from '../src/commands/grpc-service/commands/generate.js';
import GRPCCommands from '../src/commands/grpc-service/index.js';
import { Client } from '../src/core/client/client.js';
const __dirname = dirname(fileURLToPath(import.meta.url));
export const mockPlatformTransport = () =>
createRouterTransport(({ service }) => {
service(PlatformService, {});
});
describe('gRPC Generate Command', () => {
test('should generate proto and mapping files', async (testContext) => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const tmpDir = join(tmpdir(), `grpc-test-${Date.now()}`);
mkdirSync(tmpDir, { recursive: true });
testContext.onTestFinished(() => {
rmdirSync(tmpDir, { recursive: true });
});
const schemaPath = resolve(__dirname, 'fixtures', 'full-schema.graphql');
await program.parseAsync(['generate', 'testservice', '-i', schemaPath, '-o', tmpDir], {
from: 'user',
});
// Verify the output files exist
expect(existsSync(join(tmpDir, 'mapping.json'))).toBe(true);
expect(existsSync(join(tmpDir, 'service.proto'))).toBe(true);
expect(existsSync(join(tmpDir, 'service.proto.lock.json'))).toBe(true);
});
test('should create output directory if it does not exist', async () => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const nonExistentDir = join(tmpdir(), `grpc-test-non-existent-${Date.now()}`);
// Ensure the directory doesn't exist
if (existsSync(nonExistentDir)) {
rmSync(nonExistentDir, { recursive: true, force: true });
}
const schemaPath = resolve(__dirname, 'fixtures', 'full-schema.graphql');
await program.parseAsync(['generate', 'testservice', '-i', schemaPath, '-o', nonExistentDir], {
from: 'user',
});
// Verify the output directory and files exist
expect(existsSync(nonExistentDir)).toBe(true);
expect(existsSync(join(nonExistentDir, 'mapping.json'))).toBe(true);
expect(existsSync(join(nonExistentDir, 'service.proto'))).toBe(true);
expect(existsSync(join(nonExistentDir, 'service.proto.lock.json'))).toBe(true);
// Cleanup
rmSync(nonExistentDir, { recursive: true, force: true });
});
test('should fail when input file does not exist', async (testContext) => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const tmpDir = join(tmpdir(), `grpc-test-${Date.now()}`);
mkdirSync(tmpDir, { recursive: true });
testContext.onTestFinished(() => {
rmdirSync(tmpDir, { recursive: true });
});
const nonExistentFile = join(tmpdir(), 'non-existent-schema.graphql');
await expect(
program.parseAsync(['generate', 'testservice', '-i', nonExistentFile, '-o', tmpDir], {
from: 'user',
}),
).rejects.toThrow();
});
test('should fail when output path is a file', async (testContext) => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const tmpDir = join(tmpdir(), `grpc-test-${Date.now()}`);
mkdirSync(tmpDir, { recursive: true });
testContext.onTestFinished(() => {
rmdirSync(tmpDir, { recursive: true });
});
const outputFile = join(tmpDir, 'output.txt');
writeFileSync(outputFile, 'test');
program.exitOverride((err) => {
expect(err.message).toContain(`Output directory ${outputFile} is not a directory`);
});
await expect(
program.parseAsync(['generate', 'testservice', '-i', 'test/fixtures/full-schema.graphql', '-o', outputFile], {
from: 'user',
}),
).rejects.toThrow('process.exit unexpectedly called with "1"');
});
test('should generate all files with warnings', async (testContext) => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const tmpDir = join(tmpdir(), `grpc-test-${Date.now()}`);
mkdirSync(tmpDir, { recursive: true });
testContext.onTestFinished(() => {
rmdirSync(tmpDir, { recursive: true });
});
const schemaPath = resolve(__dirname, 'fixtures', 'schema-with-nullable-list-items.graphql');
// Should complete successfully despite warnings
await program.parseAsync(['generate', 'testservice', '-i', schemaPath, '-o', tmpDir], {
from: 'user',
});
// Verify the output files exist (generation should continue with warnings)
expect(existsSync(join(tmpDir, 'mapping.json'))).toBe(true);
expect(existsSync(join(tmpDir, 'service.proto'))).toBe(true);
expect(existsSync(join(tmpDir, 'service.proto.lock.json'))).toBe(true);
});
test('should fail when schema has validation errors', async (testContext) => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const tmpDir = join(tmpdir(), `grpc-test-${Date.now()}`);
mkdirSync(tmpDir, { recursive: true });
testContext.onTestFinished(() => {
rmdirSync(tmpDir, { recursive: true });
});
const schemaPath = resolve(__dirname, 'fixtures', 'schema-with-validation-errors.graphql');
// Should fail due to validation errors
await expect(
program.parseAsync(['generate', 'testservice', '-i', schemaPath, '-o', tmpDir], {
from: 'user',
}),
).rejects.toThrow('Schema validation failed');
// Verify no output files were created (generation should stop on errors)
expect(existsSync(join(tmpDir, 'mapping.json'))).toBe(false);
expect(existsSync(join(tmpDir, 'service.proto'))).toBe(false);
expect(existsSync(join(tmpDir, 'service.proto.lock.json'))).toBe(false);
});
test('should display warnings and stop on errors', async (testContext) => {
const client: Client = {
platform: createPromiseClient(PlatformService, mockPlatformTransport()),
};
const program = new Command();
program.addCommand(GenerateCommand({ client }));
const tmpDir = join(tmpdir(), `grpc-test-${Date.now()}`);
mkdirSync(tmpDir, { recursive: true });
testContext.onTestFinished(() => {
rmdirSync(tmpDir, { recursive: true });
});
const schemaPath = resolve(__dirname, 'fixtures', 'schema-with-warnings-and-errors.graphql');
// Should fail due to validation errors (despite having warnings)
await expect(
program.parseAsync(['generate', 'testservice', '-i', schemaPath, '-o', tmpDir], {
from: 'user',
}),
).rejects.toThrow('Schema validation failed');
// Verify no output files were created (generation should stop on errors)
expect(existsSync(join(tmpDir, 'mapping.json'))).toBe(false);
expect(existsSync(join(tmpDir, 'service.proto'))).toBe(false);
expect(existsSync(join(tmpDir, 'service.proto.lock.json'))).toBe(false);
});
});