Add validation of checksums

src/validate.test.ts

@@ -0,0 +1,28 @@
+import validateUploader from './validate';
+
+const request = require('requestretry');
+
+const bashScript = (async () => {
+  try {
+    const script = await request({
+      json: false,
+      maxAttempts: 10,
+      timeout: 3000,
+      url: 'https://codecov.io/bash',
+    });
+    return script.body;
+  } catch (err) {
+    throw err;
+  }
+});
+
+test('validChecksums', async () => {
+  const valid = await validateUploader(await bashScript());
+  expect(valid).toBeTruthy();
+});
+
+test('invalidChecksums', async () => {
+  const script = await bashScript();
+  const valid = await validateUploader(script.substring(0, script.length - 1));
+  expect(valid).toBeFalsy();
+});