fix(storage): md5 calculation for react native (#13836)

* fix(storage): md5 calculation for react native * chore: update unit tests * code cleanup --------- Co-authored-by: Ashwin Kumar <[email protected]>
aws-amplify · Sep 23, 2024 · 63bceab · 63bceab
1 parent fab71a7
commit 63bceab
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diff --git a/packages/storage/__tests__/providers/s3/utils/md5.native.test.ts b/packages/storage/__tests__/providers/s3/utils/md5.native.test.ts
@@ -69,23 +69,23 @@ describe('calculateContentMd5 (native)', () => {
 		mockMd5.mockReset();
 	});
 
-	it('calculates MD5 for content type: string', async () => {
-		await calculateContentMd5(stringContent);
-		const [mockMd5Instance] = mockMd5.mock.instances;
-		expect(mockMd5Instance.update.mock.calls[0][0]).toBe(stringContent);
-		expect(mockToBase64).toHaveBeenCalled();
-	});
-
 	it.each([
+		{ type: 'string', content: stringContent },
 		{ type: 'ArrayBuffer view', content: new Uint8Array() },
 		{ type: 'ArrayBuffer', content: new ArrayBuffer(8) },
-		{ type: 'Blob', content: new Blob([stringContent]) },
 	])('calculates MD5 for content type: $type', async ({ content }) => {
+		await calculateContentMd5(content);
+		const [mockMd5Instance] = mockMd5.mock.instances;
+		expect(mockMd5Instance.update.mock.calls[0][0]).toBe(content);
+		expect(mockToBase64).toHaveBeenCalled();
+	});
+
+	it('calculates MD5 for content type: blob', async () => {
 		Object.defineProperty(global, 'FileReader', {
 			writable: true,
 			value: jest.fn(() => mockSuccessfulFileReader),
 		});
-		await calculateContentMd5(content);
+		await calculateContentMd5(new Blob([stringContent]));
 		const [mockMd5Instance] = mockMd5.mock.instances;
 		expect(mockMd5Instance.update.mock.calls[0][0]).toBe(fileReaderResult);
 		expect(mockSuccessfulFileReader.readAsArrayBuffer).toHaveBeenCalled();

diff --git a/packages/storage/__tests__/providers/s3/utils/md5.test.ts b/packages/storage/__tests__/providers/s3/utils/md5.test.ts
@@ -46,23 +46,23 @@ describe('calculateContentMd5', () => {
 		mockMd5.mockReset();
 	});
 
-	it('calculates MD5 for content type: string', async () => {
-		await calculateContentMd5(stringContent);
-		const [mockMd5Instance] = mockMd5.mock.instances;
-		expect(mockMd5Instance.update.mock.calls[0][0]).toBe(stringContent);
-		expect(mockToBase64).toHaveBeenCalled();
-	});
-
 	it.each([
+		{ type: 'string', content: stringContent },
 		{ type: 'ArrayBuffer view', content: new Uint8Array() },
 		{ type: 'ArrayBuffer', content: new ArrayBuffer(8) },
-		{ type: 'Blob', content: new Blob([stringContent]) },
 	])('calculates MD5 for content type: $type', async ({ content }) => {
+		await calculateContentMd5(content);
+		const [mockMd5Instance] = mockMd5.mock.instances;
+		expect(mockMd5Instance.update.mock.calls[0][0]).toBe(content);
+		expect(mockToBase64).toHaveBeenCalled();
+	});
+
+	it('calculates MD5 for content type: blob', async () => {
 		Object.defineProperty(global, 'FileReader', {
 			writable: true,
 			value: jest.fn(() => mockSuccessfulFileReader),
 		});
-		await calculateContentMd5(content);
+		await calculateContentMd5(new Blob([stringContent]));
 		const [mockMd5Instance] = mockMd5.mock.instances;
 		expect(mockMd5Instance.update.mock.calls[0][0]).toBe(fileReaderResult);
 		expect(mockSuccessfulFileReader.readAsArrayBuffer).toHaveBeenCalled();

diff --git a/packages/storage/src/providers/s3/utils/md5.native.ts b/packages/storage/src/providers/s3/utils/md5.native.ts
@@ -14,16 +14,8 @@ export const calculateContentMd5 = async (
 	content: Blob | string | ArrayBuffer | ArrayBufferView,
 ): Promise<string> => {
 	const hasher = new Md5();
-	if (typeof content === 'string') {
-		hasher.update(content);
-	} else if (ArrayBuffer.isView(content) || content instanceof ArrayBuffer) {
-		const blob = new Blob([content]);
-		const buffer = await readFile(blob);
-		hasher.update(buffer);
-	} else {
-		const buffer = await readFile(content);
-		hasher.update(buffer);
-	}
+	const buffer = content instanceof Blob ? await readFile(content) : content;
+	hasher.update(buffer);
 	const digest = await hasher.digest();
 
 	return toBase64(digest);

diff --git a/packages/storage/src/providers/s3/utils/md5.ts b/packages/storage/src/providers/s3/utils/md5.ts
@@ -9,16 +9,8 @@ export const calculateContentMd5 = async (
 	content: Blob | string | ArrayBuffer | ArrayBufferView,
 ): Promise<string> => {
 	const hasher = new Md5();
-	if (typeof content === 'string') {
-		hasher.update(content);
-	} else if (ArrayBuffer.isView(content) || content instanceof ArrayBuffer) {
-		const blob = new Blob([content]);
-		const buffer = await readFile(blob);
-		hasher.update(buffer);
-	} else {
-		const buffer = await readFile(content);
-		hasher.update(buffer);
-	}
+	const buffer = content instanceof Blob ? await readFile(content) : content;
+	hasher.update(buffer);
 	const digest = await hasher.digest();
 
 	return toBase64(digest);