Additional test for Info-Zip generated ZipCrypto encrypted file. Relates to Issue 471.

Author: lukemalcolm

test/assets/issue-471-infozip-encrypted.zip

@@ -0,0 +1,35 @@
+"use strict";
+
+// Tests for github issue 471: https://github.com/cthackers/adm-zip/issues/471
+
+const assert = require("assert");
+const path = require("path");
+const Zip = require("../../adm-zip");
+
+describe("decryption with info-zip spec password check", () => {
+
+
+    // test decryption with both password types
+    it("test decrypted data with password", () => {
+        // the issue-471-infozip-encrypted.zip file has been generated with Info-Zip Zip 2.32, but the Info-Zip
+        // standard is used by other zip generators as well.
+        const infoZip = new Zip(path.join(__dirname, "../assets/issue-471-infozip-encrypted.zip"));
+        const entries = infoZip.getEntries();
+        assert(entries.length === 1, "Good: Test archive contains exactly 1 file");
+
+        const testFile = entries.filter(function (entry) {
+            return entry.entryName === "dummy.txt";
+        });
+        assert(testFile.length === 1, "Good: dummy.txt file exists as archive entry");
+
+        const readData = entries[0].getData('secret');
+        assert(readData.toString('utf8').startsWith('How much wood could a woodchuck chuck'), "Good: buffer matches expectations");
+
+        // assert that the following call throws an exception
+        assert.throws(() => {
+            const readDataBad = entries[0].getData('badpassword');
+        }, "Good: error thrown for bad password");
+
+    });
+});
+