fix(parser): min array length on Records (#3521)

packages/parser/src/schemas/ses.ts

@@ -173,7 +173,7 @@ const SesRecordSchema = z.object({
  * @see {@link https://docs.aws.amazon.com/ses/latest/dg/receiving-email-notifications-examples.html}
  */
 const SesSchema = z.object({
-  Records: z.array(SesRecordSchema),
+  Records: z.array(SesRecordSchema).min(1),
 });
 
 export { SesSchema, SesRecordSchema };

packages/parser/tests/unit/envelopes/sqs.test.ts

@@ -51,7 +51,8 @@ describe('Envelope: SqsEnvelope', () => {
       expect(result).toStrictEqual([{ message: 'hello' }, { message: 'foo1' }]);
     });
   });
-  describe('safeParse', () => {
+
+  describe('Method: safeParse', () => {
     it('parses an SQS event', () => {
       // Prepare
       const event = structuredClone(baseEvent);

packages/parser/tests/unit/parser.decorator.test.ts

@@ -1,159 +1,109 @@
-import { generateMock } from '@anatine/zod-mock';
-import type { LambdaInterface } from '@aws-lambda-powertools/commons/lib/esm/types';
+import type { LambdaInterface } from '@aws-lambda-powertools/commons/types';
 import type { Context } from 'aws-lambda';
 import { describe, expect, it } from 'vitest';
-import type { z } from 'zod';
+import { type ZodSchema, z } from 'zod';
 import { EventBridgeEnvelope } from '../../src/envelopes/index.js';
 import { ParseError } from '../../src/errors.js';
 import { parser } from '../../src/index.js';
 import { EventBridgeSchema } from '../../src/schemas/index.js';
-import type { EventBridgeEvent, ParsedResult } from '../../src/types';
-import { TestSchema, getTestEvent } from './schema/utils';
+import type { EventBridgeEvent, ParsedResult } from '../../src/types/index.js';
+import { getTestEvent } from './schema/utils.js';
 
-describe('Parser Decorator', () => {
-  const customEventBridgeSchema = EventBridgeSchema.extend({
-    detail: TestSchema,
+describe('Decorator: parser', () => {
+  const schema = z.object({
+    name: z.string(),
+    age: z.number(),
+  });
+  const payload = {
+    name: 'John Doe',
+    age: 30,
+  };
+  const extendedSchema = EventBridgeSchema.extend({
+    detail: schema,
+  });
+  type event = z.infer<typeof extendedSchema>;
+  const baseEvent = getTestEvent<EventBridgeEvent>({
+    eventsPath: 'eventbridge',
+    filename: 'base',
   });
-
-  type TestEvent = z.infer<typeof TestSchema>;
 
   class TestClass implements LambdaInterface {
-    @parser({ schema: TestSchema })
-    public async handler(
-      event: TestEvent,
-      _context: Context
-    ): Promise<TestEvent> {
-      return event;
-    }
-
-    @parser({ schema: customEventBridgeSchema })
-    public async handlerWithCustomSchema(
-      event: unknown,
-      _context: Context
-    ): Promise<unknown> {
+    @parser({ schema: extendedSchema })
+    public async handler(event: event, _context: Context): Promise<event> {
       return event;
     }
 
-    @parser({ schema: TestSchema, envelope: EventBridgeEnvelope })
+    @parser({ schema, envelope: EventBridgeEnvelope })
     public async handlerWithParserCallsAnotherMethod(
-      event: TestEvent,
+      event: z.infer<typeof schema>,
       _context: Context
     ): Promise<unknown> {
       return this.anotherMethod(event);
     }
 
-    @parser({ schema: TestSchema, envelope: EventBridgeEnvelope })
-    public async handlerWithSchemaAndEnvelope(
-      event: TestEvent,
-      _context: Context
-    ): Promise<unknown> {
-      return event;
-    }
-
     @parser({
-      schema: TestSchema,
+      schema,
       safeParse: true,
     })
     public async handlerWithSchemaAndSafeParse(
-      event: ParsedResult<unknown, TestEvent>,
+      event: ParsedResult<unknown, event>,
       _context: Context
-    ): Promise<ParsedResult> {
+    ): Promise<ParsedResult<unknown, event>> {
       return event;
     }
 
     @parser({
-      schema: TestSchema,
+      schema,
       envelope: EventBridgeEnvelope,
       safeParse: true,
     })
     public async harndlerWithEnvelopeAndSafeParse(
-      event: ParsedResult<TestEvent, TestEvent>,
+      event: ParsedResult<event, event>,
       _context: Context
     ): Promise<ParsedResult> {
       return event;
     }
 
-    private async anotherMethod(event: TestEvent): Promise<TestEvent> {
+    private async anotherMethod<T extends ZodSchema>(
+      event: z.infer<T>
+    ): Promise<z.infer<T>> {
       return event;
     }
   }
-
   const lambda = new TestClass();
 
-  it('should parse custom schema event', async () => {
-    const testEvent = generateMock(TestSchema);
+  it('parses the event using the schema provided', async () => {
+    // Prepare
+    const event = structuredClone(baseEvent);
+    event.detail = payload;
 
-    const resp = await lambda.handler(testEvent, {} as Context);
+    // Act
+    // @ts-expect-error - extended schema
+    const result = await lambda.handler(event, {} as Context);
 
-    expect(resp).toEqual(testEvent);
+    // Assess
+    expect(result).toEqual(event);
   });
 
-  it('should parse custom schema with envelope event', async () => {
-    const customPayload = generateMock(TestSchema);
-    const testEvent = getTestEvent<EventBridgeEvent>({
-      eventsPath: 'eventbridge',
-      filename: 'base',
-    });
-    testEvent.detail = customPayload;
+  it('preserves the class method scope when decorated', async () => {
+    // Prepare
+    const event = structuredClone(baseEvent);
+    event.detail = payload;
 
-    const resp = await lambda.handlerWithSchemaAndEnvelope(
-      testEvent as unknown as TestEvent,
+    const result = await lambda.handlerWithParserCallsAnotherMethod(
+      // @ts-expect-error - extended schema
+      event,
       {} as Context
     );
 
-    expect(resp).toEqual(customPayload);
+    expect(result).toEqual(event.detail);
   });
 
-  it('should parse extended envelope event', async () => {
-    const customPayload = generateMock(TestSchema);
-
-    const testEvent = generateMock(customEventBridgeSchema);
-    testEvent.detail = customPayload;
-
-    const resp: z.infer<typeof customEventBridgeSchema> =
-      (await lambda.handlerWithCustomSchema(
-        testEvent,
-        {} as Context
-      )) as z.infer<typeof customEventBridgeSchema>;
-
-    expect(customEventBridgeSchema.parse(resp)).toEqual(testEvent);
-    expect(resp.detail).toEqual(customPayload);
-  });
-
-  it('should parse and call private async method', async () => {
-    const customPayload = generateMock(TestSchema);
-    const testEvent = getTestEvent<EventBridgeEvent>({
-      eventsPath: 'eventbridge',
-      filename: 'base',
-    });
-    testEvent.detail = customPayload;
-
-    const resp = await lambda.handlerWithParserCallsAnotherMethod(
-      testEvent as unknown as TestEvent,
-      {} as Context
-    );
-
-    expect(resp).toEqual(customPayload);
-  });
-
-  it('should parse event with schema and safeParse', async () => {
-    const testEvent = generateMock(TestSchema);
-
-    const resp = await lambda.handlerWithSchemaAndSafeParse(
-      testEvent as unknown as ParsedResult<unknown, TestEvent>,
-      {} as Context
-    );
-
-    expect(resp).toEqual({
-      success: true,
-      data: testEvent,
-    });
-  });
-
-  it('should parse event with schema and safeParse and return error', async () => {
+  it('returns a parse error when schema validation fails with safeParse enabled', async () => {
+    // Act & Assess
     expect(
       await lambda.handlerWithSchemaAndSafeParse(
-        { foo: 'bar' } as unknown as ParsedResult<unknown, TestEvent>,
+        { foo: 'bar' } as unknown as ParsedResult<unknown, event>,
         {} as Context
       )
     ).toEqual({
@@ -163,29 +113,29 @@ describe('Parser Decorator', () => {
     });
   });
 
-  it('should parse event with envelope and safeParse', async () => {
-    const testEvent = generateMock(TestSchema);
-    const event = getTestEvent<EventBridgeEvent>({
-      eventsPath: 'eventbridge',
-      filename: 'base',
-    });
-    event.detail = testEvent;
+  it('parses the event with envelope and safeParse', async () => {
+    // Prepare
+    const event = structuredClone(baseEvent);
+    event.detail = payload;
 
-    const resp = await lambda.harndlerWithEnvelopeAndSafeParse(
-      event as unknown as ParsedResult<TestEvent, TestEvent>,
+    // Act
+    const result = await lambda.harndlerWithEnvelopeAndSafeParse(
+      event as unknown as ParsedResult<event, event>,
       {} as Context
     );
 
-    expect(resp).toEqual({
+    // Assess
+    expect(result).toEqual({
       success: true,
-      data: testEvent,
+      data: event.detail,
     });
   });
 
-  it('should parse event with envelope and safeParse and return error', async () => {
+  it('returns a parse error when schema/envelope validation fails with safeParse enabled', async () => {
+    // Act & Assess
     expect(
       await lambda.harndlerWithEnvelopeAndSafeParse(
-        { foo: 'bar' } as unknown as ParsedResult<TestEvent, TestEvent>,
+        { foo: 'bar' } as unknown as ParsedResult<event, event>,
         {} as Context
       )
     ).toEqual({

packages/parser/tests/unit/schema/appsync.test.ts

@@ -1,24 +1,19 @@
-/**
- * Test built-in AppSync resolver schemas
- */
-
 import { describe, expect, it } from 'vitest';
 import {
   AppSyncBatchResolverSchema,
   AppSyncResolverSchema,
-} from '../../../src/schemas/appsync';
-import type { AppSyncResolverEvent } from '../../../src/types';
-import { getTestEvent, omit } from './utils';
+} from '../../../src/schemas/appsync.js';
+import type { AppSyncResolverEvent } from '../../../src/types/schema.js';
+import { getTestEvent, omit } from './utils.js';
 
-describe('AppSync Resolver Schemas', () => {
+describe('Schema: AppSync Resolver', () => {
   const eventsPath = 'appsync';
-
-  const appSyncResolverEvent: AppSyncResolverEvent = getTestEvent({
+  const appSyncResolverEvent = getTestEvent<AppSyncResolverEvent>({
     eventsPath,
     filename: 'resolver',
   });
 
-  const table = [
+  const events = [
     {
       name: 'null source',
       event: {
@@ -119,73 +114,33 @@ describe('AppSync Resolver Schemas', () => {
     },
   ];
 
-  describe('AppSync Resolver Schema', () => {
-    it('should return validation error when the event is invalid', () => {
-      const { error } = AppSyncResolverSchema.safeParse(
-        omit(['request', 'info'], appSyncResolverEvent)
-      );
+  it.each(events)('parses an AppSyn resolver event with $name', ({ event }) => {
+    // Assess
+    const result = AppSyncResolverSchema.parse(event);
 
-      expect(error?.issues).toEqual([
-        {
-          code: 'invalid_type',
-          expected: 'object',
-          received: 'undefined',
-          path: ['request'],
-          message: 'Required',
-        },
-        {
-          code: 'invalid_type',
-          expected: 'object',
-          received: 'undefined',
-          path: ['info'],
-          message: 'Required',
-        },
-      ]);
-    });
+    // Assess
+    expect(result).toEqual(event);
+  });
 
-    it('should parse resolver event without identity field', () => {
-      const event: Omit<AppSyncResolverEvent, 'identity'> = omit(
-        ['identity'],
-        appSyncResolverEvent
-      );
-      const parsedEvent = AppSyncResolverSchema.parse(event);
-      expect(parsedEvent).toEqual(event);
-    });
+  it('throws when the event is not an AppSync resolver event', () => {
+    // Prepare
+    const event = omit(
+      ['request', 'info'],
+      structuredClone(appSyncResolverEvent)
+    );
 
-    it.each(table)('should parse resolver event with $name', ({ event }) => {
-      const parsedEvent = AppSyncResolverSchema.parse(event);
-      expect(parsedEvent).toEqual(event);
-    });
+    // Act & Assess
+    expect(() => AppSyncResolverSchema.parse(event)).toThrow();
   });
 
-  describe('Batch AppSync Resolver Schema', () => {
-    it('should return validation error when the event is invalid', () => {
-      const event = omit(['request', 'info'], appSyncResolverEvent);
-
-      const { error } = AppSyncBatchResolverSchema.safeParse([event]);
+  it('parses batches of AppSync resolver events', () => {
+    // Prepare
+    const event = events.map((event) => structuredClone(event.event));
 
-      expect(error?.issues).toEqual([
-        {
-          code: 'invalid_type',
-          expected: 'object',
-          received: 'undefined',
-          path: [0, 'request'],
-          message: 'Required',
-        },
-        {
-          code: 'invalid_type',
-          expected: 'object',
-          received: 'undefined',
-          path: [0, 'info'],
-          message: 'Required',
-        },
-      ]);
-    });
+    // Act
+    const result = AppSyncBatchResolverSchema.parse(event);
 
-    it('should parse batches of appsync resolver events', () => {
-      const events = table.map((table) => table.event);
-      const parsedEvent = AppSyncBatchResolverSchema.parse(events);
-      expect(parsedEvent).toEqual(events);
-    });
+    // Assess
+    expect(result).toEqual(event);
   });
 });