fix(HTTP Request Node): Process text files (#16226)

packages/nodes-base/nodes/HttpRequest/test/utils/binaryData.test.ts

@@ -0,0 +1,29 @@
+import type { IBinaryData, IRequestOptions } from 'n8n-workflow';
+
+import { setFilename } from '../../V3/utils/binaryData';
+
+describe('setFilename', () => {
+	it('returns filename from URI if fileName is missing and URI ends with fileExtension', () => {
+		const preparedBinaryData = { fileExtension: 'png' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/image.png' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, undefined)).toBe('image.png');
+	});
+
+	it('returns constructed filename if fileName is missing and URI does not end with fileExtension', () => {
+		const preparedBinaryData = { fileExtension: 'jpg' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/image.png' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, 'response')).toBe('response.jpg');
+	});
+
+	it('returns constructed filename with default "data" if responseFileName is undefined', () => {
+		const preparedBinaryData = { fileExtension: 'txt' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/file' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, undefined)).toBe('data.txt');
+	});
+
+	it('returns fileName if it exists', () => {
+		const preparedBinaryData = { fileName: 'myfile.pdf', fileExtension: 'pdf' } as IBinaryData;
+		const requestOptions = { uri: 'https://example.com/file.pdf' } as IRequestOptions;
+		expect(setFilename(preparedBinaryData, requestOptions, 'response')).toBe('myfile.pdf');
+	});
+});