Update mock to include error case

scripts/__mocks__/@pdfme/generator.test.ts

@@ -1,13 +1,47 @@
 import { generate } from './generator';
+import type { Template } from '@pdfme/common';
 
 describe('Testing mock generate util', () => {
   test('should return a Promise', async () => {
-    const result = generate({ template: {}, inputs: [] });
+    const result = generate({
+      template: { schemas: [] } as Template,
+      inputs: [],
+    });
     expect(result).toBeInstanceOf(Promise);
   });
 
   test('should resolve to a Uint8Array', async () => {
-    const result = generate({ template: {}, inputs: [] });
+    const result = generate({
+      template: { schemas: [] } as Template,
+      inputs: [],
+    });
     expect(result).toBeInstanceOf(Uint8Array);
   });
+
+  it('should throw an error when template is empty', async () => {
+    const emptyTemplate = { schemas: [] } as Template;
+    const validInputs = [{ field1: 'value1' }];
+
+    await expect(
+      generate({ template: emptyTemplate, inputs: validInputs }),
+    ).rejects.toThrow('Template or inputs cannot be empty.');
+  });
+
+  it('should throw an error when inputs are empty', async () => {
+    const validTemplate = { schemas: [{ name: 'field1' }] } as Template;
+    const emptyInputs: Record<string, string>[] = [];
+
+    await expect(
+      generate({ template: validTemplate, inputs: emptyInputs }),
+    ).rejects.toThrow('Template or inputs cannot be empty.');
+  });
+
+  it('should throw an error when both template and inputs are empty', async () => {
+    const emptyTemplate = { schemas: [] } as Template;
+    const emptyInputs: Record<string, string>[] = [];
+
+    await expect(
+      generate({ template: emptyTemplate, inputs: emptyInputs }),
+    ).rejects.toThrow('Template or inputs cannot be empty.');
+  });
 });

scripts/__mocks__/@pdfme/generator.ts

@@ -7,6 +7,9 @@ export const generate = async ({
   template: Template;
   inputs: Record<string, string>[];
 }): Promise<Uint8Array> => {
+  if (template.schemas.length === 0 || inputs.length === 0) {
+    throw new Error('Template or inputs cannot be empty.');
+  }
   // Generate mock PDF-like header bytes
   const pdfHeader = [0x25, 0x50, 0x44, 0x46]; // %PDF
   // Add some random content based on input size