tests(index): add tests for uncovered branches

src/index.test.js

@@ -165,6 +165,20 @@ describe('pdfDetach function', () => {
 		await clean();
 	});
 
+	test('Should list embedded files', async () => {
+		const poppler = new Poppler();
+		const options = {
+			listEmbedded: true
+		}
+		const attachmentFile = `${testDirectory}pdf_1.3_NHS_Constitution_attached_detach.pdf`;
+
+		await poppler
+			.pdfDetach(options, attachmentFile)
+			.then((res) => {
+				expect(typeof res).toBe('string');
+			});
+	});
+
 	test('Should return an Error object if file passed not PDF format', async () => {
 		const poppler = new Poppler();
 		const testTxtFile = `${testDirectory}test.txt`;
@@ -325,6 +339,17 @@ describe('pdfInfo function', () => {
 		await clean();
 	});
 
+	test('Should list info of PDF file', async () => {
+		const poppler = new Poppler();
+		const attachmentFile = `${testDirectory}pdf_1.3_NHS_Constitution_attached_detach.pdf`;
+
+		await poppler
+			.pdfInfo(undefined, attachmentFile)
+			.then((res) => {
+				expect(typeof res).toBe('string');
+			});
+	});
+
 	test('Should return an Error object if file passed not PDF format', async () => {
 		const poppler = new Poppler();
 		const testTxtFile = `${testDirectory}test.txt`;
@@ -849,6 +874,19 @@ describe('pdfUnite function', () => {
 		});
 	});
 
+	test('Should return an Error object if a PDF file and non-PDF file are attempted to be merged', async () => {
+		const poppler = new Poppler();
+		const files = [
+			`${testDirectory}test.txt`,
+			`${testDirectory}pdf_1.7_NHS_Constitution_Handbook.pdf`
+		];
+
+		expect.assertions(1);
+		await poppler.pdfUnite(undefined, files).catch((err) => {
+			expect(err.message.substring(0, 15)).toBe('Command failed:');
+		});
+	});
+
 	test('Should return an Error object if invalid value types provided for an option are passed to function', async () => {
 		const poppler = new Poppler();
 		const files = [